refactor(crypto): replace byte-slice signing contexts with SigningContext enum

- Add `rekey.proto` with `ContributePassphrase` / `ContributeRecoveryPassphrase` / `RekeyResult`
- Wire `rekey` as a 4th vault stream payload in `vault.proto` and gRPC dispatch
- Add `RekeyRootKey` message to `Vault` actor: generates new random seal key, re-encrypts root key, writes new `root_key_history` row
- Add `StartRekey`, `ContributeRekey`, `ContributeRecoveryRekey` messages to `VaultCoordinator`; `finalize_rekey` uses threshold-1 fast path identical to bootstrap
- `execute_replace_operator` now UPDATEs `operator_identity.public_key` in-place (avoids FK constraint violation), deletes stale `operator` share row, then triggers `StartRekey`
- `execute_update_shamir_parameters` triggers `StartRekey` instead of warning stub
- `ProposalKind::ReplaceOperator` carries `old_operator_id`; encode/decode updated accordingly
- `GlobalActors::spawn` extracts `vault_coordinator` before `Ok(Self { … })` so it can be cloned into `ProposalManager::new`
- Add `handle_rekey` in session handlers forwarding passphrase contributions to `VaultCoordinator`
- Fix test: rename `replace_operator_inserts_identity_row` → `replace_operator_updates_pubkey_and_starts_rekey`, assert count stays 1 and pubkey is updated

app/.dart_tool/extension_discovery/README.md

@@ -1,31 +0,0 @@
-Extension Discovery Cache
-=========================
-
-This folder is used by `package:extension_discovery` to cache lists of
-packages that contains extensions for other packages.
-
-DO NOT USE THIS FOLDER
-----------------------
-
- * Do not read (or rely) the contents of this folder.
- * Do write to this folder.
-
-If you're interested in the lists of extensions stored in this folder use the
-API offered by package `extension_discovery` to get this information.
-
-If this package doesn't work for your use-case, then don't try to read the
-contents of this folder. It may change, and will not remain stable.
-
-Use package `extension_discovery`
----------------------------------
-
-If you want to access information from this folder.
-
-Feel free to delete this folder
--------------------------------
-
-Files in this folder act as a cache, and the cache is discarded if the files
-are older than the modification time of `.dart_tool/package_config.json`.
-
-Hence, it should never be necessary to clear this cache manually, if you find a
-need to do please file a bug.

app/.dart_tool/extension_discovery/vs_code.json

@@ -1 +0,0 @@
-{"version":2,"entries":[{"package":"app","rootUri":"../","packageUri":"lib/"}]}

app/.dart_tool/package_config.json

@@ -1,178 +0,0 @@
-{
-  "configVersion": 2,
-  "packages": [
-    {
-      "name": "async",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/async-2.13.0",
-      "packageUri": "lib/",
-      "languageVersion": "3.4"
-    },
-    {
-      "name": "boolean_selector",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/boolean_selector-2.1.2",
-      "packageUri": "lib/",
-      "languageVersion": "3.1"
-    },
-    {
-      "name": "characters",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/characters-1.4.0",
-      "packageUri": "lib/",
-      "languageVersion": "3.4"
-    },
-    {
-      "name": "clock",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/clock-1.1.2",
-      "packageUri": "lib/",
-      "languageVersion": "3.4"
-    },
-    {
-      "name": "collection",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/collection-1.19.1",
-      "packageUri": "lib/",
-      "languageVersion": "3.4"
-    },
-    {
-      "name": "cupertino_icons",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/cupertino_icons-1.0.8",
-      "packageUri": "lib/",
-      "languageVersion": "3.1"
-    },
-    {
-      "name": "fake_async",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/fake_async-1.3.3",
-      "packageUri": "lib/",
-      "languageVersion": "3.3"
-    },
-    {
-      "name": "flutter",
-      "rootUri": "file:///Users/kaska/.local/share/mise/installs/flutter/3.38.9-stable/packages/flutter",
-      "packageUri": "lib/",
-      "languageVersion": "3.8"
-    },
-    {
-      "name": "flutter_lints",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/flutter_lints-6.0.0",
-      "packageUri": "lib/",
-      "languageVersion": "3.8"
-    },
-    {
-      "name": "flutter_test",
-      "rootUri": "file:///Users/kaska/.local/share/mise/installs/flutter/3.38.9-stable/packages/flutter_test",
-      "packageUri": "lib/",
-      "languageVersion": "3.8"
-    },
-    {
-      "name": "leak_tracker",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/leak_tracker-11.0.2",
-      "packageUri": "lib/",
-      "languageVersion": "3.2"
-    },
-    {
-      "name": "leak_tracker_flutter_testing",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/leak_tracker_flutter_testing-3.0.10",
-      "packageUri": "lib/",
-      "languageVersion": "3.2"
-    },
-    {
-      "name": "leak_tracker_testing",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/leak_tracker_testing-3.0.2",
-      "packageUri": "lib/",
-      "languageVersion": "3.2"
-    },
-    {
-      "name": "lints",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/lints-6.1.0",
-      "packageUri": "lib/",
-      "languageVersion": "3.8"
-    },
-    {
-      "name": "matcher",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/matcher-0.12.17",
-      "packageUri": "lib/",
-      "languageVersion": "3.4"
-    },
-    {
-      "name": "material_color_utilities",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/material_color_utilities-0.11.1",
-      "packageUri": "lib/",
-      "languageVersion": "2.17"
-    },
-    {
-      "name": "meta",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/meta-1.17.0",
-      "packageUri": "lib/",
-      "languageVersion": "3.5"
-    },
-    {
-      "name": "path",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/path-1.9.1",
-      "packageUri": "lib/",
-      "languageVersion": "3.4"
-    },
-    {
-      "name": "sky_engine",
-      "rootUri": "file:///Users/kaska/.local/share/mise/installs/flutter/3.38.9-stable/bin/cache/pkg/sky_engine",
-      "packageUri": "lib/",
-      "languageVersion": "3.8"
-    },
-    {
-      "name": "source_span",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/source_span-1.10.2",
-      "packageUri": "lib/",
-      "languageVersion": "3.1"
-    },
-    {
-      "name": "stack_trace",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/stack_trace-1.12.1",
-      "packageUri": "lib/",
-      "languageVersion": "3.4"
-    },
-    {
-      "name": "stream_channel",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/stream_channel-2.1.4",
-      "packageUri": "lib/",
-      "languageVersion": "3.3"
-    },
-    {
-      "name": "string_scanner",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/string_scanner-1.4.1",
-      "packageUri": "lib/",
-      "languageVersion": "3.1"
-    },
-    {
-      "name": "term_glyph",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/term_glyph-1.2.2",
-      "packageUri": "lib/",
-      "languageVersion": "3.1"
-    },
-    {
-      "name": "test_api",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/test_api-0.7.7",
-      "packageUri": "lib/",
-      "languageVersion": "3.5"
-    },
-    {
-      "name": "vector_math",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/vector_math-2.2.0",
-      "packageUri": "lib/",
-      "languageVersion": "3.1"
-    },
-    {
-      "name": "vm_service",
-      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/vm_service-15.0.2",
-      "packageUri": "lib/",
-      "languageVersion": "3.5"
-    },
-    {
-      "name": "app",
-      "rootUri": "../",
-      "packageUri": "lib/",
-      "languageVersion": "3.10"
-    }
-  ],
-  "generator": "pub",
-  "generatorVersion": "3.10.8",
-  "flutterRoot": "file:///Users/kaska/.local/share/mise/installs/flutter/3.38.9-stable",
-  "flutterVersion": "3.38.9",
-  "pubCache": "file:///Users/kaska/.pub-cache"
-}

app/.dart_tool/package_graph.json

@@ -1,230 +0,0 @@
-{
-  "roots": [
-    "app"
-  ],
-  "packages": [
-    {
-      "name": "app",
-      "version": "1.0.0+1",
-      "dependencies": [
-        "cupertino_icons",
-        "flutter"
-      ],
-      "devDependencies": [
-        "flutter_lints",
-        "flutter_test"
-      ]
-    },
-    {
-      "name": "flutter_lints",
-      "version": "6.0.0",
-      "dependencies": [
-        "lints"
-      ]
-    },
-    {
-      "name": "flutter_test",
-      "version": "0.0.0",
-      "dependencies": [
-        "clock",
-        "collection",
-        "fake_async",
-        "flutter",
-        "leak_tracker_flutter_testing",
-        "matcher",
-        "meta",
-        "path",
-        "stack_trace",
-        "stream_channel",
-        "test_api",
-        "vector_math"
-      ]
-    },
-    {
-      "name": "cupertino_icons",
-      "version": "1.0.8",
-      "dependencies": []
-    },
-    {
-      "name": "flutter",
-      "version": "0.0.0",
-      "dependencies": [
-        "characters",
-        "collection",
-        "material_color_utilities",
-        "meta",
-        "sky_engine",
-        "vector_math"
-      ]
-    },
-    {
-      "name": "lints",
-      "version": "6.1.0",
-      "dependencies": []
-    },
-    {
-      "name": "stream_channel",
-      "version": "2.1.4",
-      "dependencies": [
-        "async"
-      ]
-    },
-    {
-      "name": "meta",
-      "version": "1.17.0",
-      "dependencies": []
-    },
-    {
-      "name": "collection",
-      "version": "1.19.1",
-      "dependencies": []
-    },
-    {
-      "name": "leak_tracker_flutter_testing",
-      "version": "3.0.10",
-      "dependencies": [
-        "flutter",
-        "leak_tracker",
-        "leak_tracker_testing",
-        "matcher",
-        "meta"
-      ]
-    },
-    {
-      "name": "vector_math",
-      "version": "2.2.0",
-      "dependencies": []
-    },
-    {
-      "name": "stack_trace",
-      "version": "1.12.1",
-      "dependencies": [
-        "path"
-      ]
-    },
-    {
-      "name": "clock",
-      "version": "1.1.2",
-      "dependencies": []
-    },
-    {
-      "name": "fake_async",
-      "version": "1.3.3",
-      "dependencies": [
-        "clock",
-        "collection"
-      ]
-    },
-    {
-      "name": "path",
-      "version": "1.9.1",
-      "dependencies": []
-    },
-    {
-      "name": "matcher",
-      "version": "0.12.17",
-      "dependencies": [
-        "async",
-        "meta",
-        "stack_trace",
-        "term_glyph",
-        "test_api"
-      ]
-    },
-    {
-      "name": "test_api",
-      "version": "0.7.7",
-      "dependencies": [
-        "async",
-        "boolean_selector",
-        "collection",
-        "meta",
-        "source_span",
-        "stack_trace",
-        "stream_channel",
-        "string_scanner",
-        "term_glyph"
-      ]
-    },
-    {
-      "name": "sky_engine",
-      "version": "0.0.0",
-      "dependencies": []
-    },
-    {
-      "name": "material_color_utilities",
-      "version": "0.11.1",
-      "dependencies": [
-        "collection"
-      ]
-    },
-    {
-      "name": "characters",
-      "version": "1.4.0",
-      "dependencies": []
-    },
-    {
-      "name": "async",
-      "version": "2.13.0",
-      "dependencies": [
-        "collection",
-        "meta"
-      ]
-    },
-    {
-      "name": "leak_tracker_testing",
-      "version": "3.0.2",
-      "dependencies": [
-        "leak_tracker",
-        "matcher",
-        "meta"
-      ]
-    },
-    {
-      "name": "leak_tracker",
-      "version": "11.0.2",
-      "dependencies": [
-        "clock",
-        "collection",
-        "meta",
-        "path",
-        "vm_service"
-      ]
-    },
-    {
-      "name": "term_glyph",
-      "version": "1.2.2",
-      "dependencies": []
-    },
-    {
-      "name": "string_scanner",
-      "version": "1.4.1",
-      "dependencies": [
-        "source_span"
-      ]
-    },
-    {
-      "name": "source_span",
-      "version": "1.10.2",
-      "dependencies": [
-        "collection",
-        "path",
-        "term_glyph"
-      ]
-    },
-    {
-      "name": "boolean_selector",
-      "version": "2.1.2",
-      "dependencies": [
-        "source_span",
-        "string_scanner"
-      ]
-    },
-    {
-      "name": "vm_service",
-      "version": "15.0.2",
-      "dependencies": []
-    }
-  ],
-  "configVersion": 1
-}

app/.dart_tool/version

@@ -1 +0,0 @@
-3.38.9

docs/superpowers/plans/2026-03-28-grant-grid-view.md

@@ -1,821 +0,0 @@
-# Grant Grid View Implementation Plan
-
-> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
-
-**Goal:** Add an "EVM Grants" dashboard tab that displays all grants as enriched cards (type, chain, wallet address, client name) with per-card revoke support.
-
-**Architecture:** A new `walletAccessListProvider` fetches wallet accesses with their DB row IDs. The screen (`grants.dart`) watches only `evmGrantsProvider` for top-level state. Each `GrantCard` widget (its own file) watches enrichment providers (`walletAccessListProvider`, `evmProvider`, `sdkClientsProvider`) and the revoke mutation directly — keeping rebuilds scoped to the card. The screen is registered as a dashboard tab in `AdaptiveScaffold`.
-
-**Tech Stack:** Flutter, Riverpod (`riverpod_annotation` + `build_runner` codegen), `sizer` (adaptive sizing), `auto_route`, Protocol Buffers (Dart), `Palette` design tokens.
-
----
-
-## File Map
-
-| File | Action | Responsibility |
-|---|---|---|
-| `operator/lib/theme/palette.dart` | Modify | Add `Palette.token` (indigo accent for token-transfer cards) |
-| `operator/lib/features/connection/evm/wallet_access.dart` | Modify | Add `listAllWalletAccesses()` function |
-| `operator/lib/providers/sdk_clients/wallet_access_list.dart` | Create | `WalletAccessListProvider` — fetches full wallet access list with IDs |
-| `operator/lib/screens/dashboard/evm/grants/widgets/grant_card.dart` | Create | `GrantCard` widget — watches enrichment providers + revoke mutation; one card per grant |
-| `operator/lib/screens/dashboard/evm/grants/grants.dart` | Create | `EvmGrantsScreen` — watches `evmGrantsProvider`; handles loading/error/empty/data states; renders `GrantCard` list |
-| `operator/lib/router.dart` | Modify | Register `EvmGrantsRoute` in dashboard children |
-| `operator/lib/screens/dashboard.dart` | Modify | Add Grants entry to `routes` list and `NavigationDestination` list |
-
----
-
-## Task 1: Add `Palette.token`
-
-**Files:**
-- Modify: `operator/lib/theme/palette.dart`
-
-- [ ] **Step 1: Add the color**
-
-Replace the contents of `operator/lib/theme/palette.dart` with:
-
-```dart
-import 'package:flutter/material.dart';
-
-class Palette {
-  static const ink = Color(0xFF15263C);
-  static const coral = Color(0xFFE26254);
-  static const cream = Color(0xFFFFFAF4);
-  static const line = Color(0x1A15263C);
-  static const token = Color(0xFF5C6BC0);
-}
-```
-
-- [ ] **Step 2: Verify**
-
-```sh
-cd operator && flutter analyze lib/theme/palette.dart
-```
-
-Expected: no issues.
-
-- [ ] **Step 3: Commit**
-
-```sh
-jj describe -m "feat(theme): add Palette.token for token-transfer grant cards"
-jj new
-```
-
----
-
-## Task 2: Add `listAllWalletAccesses` feature function
-
-**Files:**
-- Modify: `operator/lib/features/connection/evm/wallet_access.dart`
-
-`readClientWalletAccess` (existing) filters the list to one client's wallet IDs and returns `Set<int>`. This new function returns the complete unfiltered list with row IDs so the grant cards can resolve wallet_access_id → wallet + client.
-
-- [ ] **Step 1: Append function**
-
-Add at the bottom of `operator/lib/features/connection/evm/wallet_access.dart`:
-
-```dart
-Future<List<SdkClientWalletAccess>> listAllWalletAccesses(
-  Connection connection,
-) async {
-  final response = await connection.ask(
-    OperatorRequest(listWalletAccess: Empty()),
-  );
-  if (!response.hasListWalletAccessResponse()) {
-    throw Exception(
-      'Expected list wallet access response, got ${response.whichPayload()}',
-    );
-  }
-  return response.listWalletAccessResponse.accesses.toList(growable: false);
-}
-```
-
-Each returned `SdkClientWalletAccess` has:
-- `.id` — the `evm_wallet_access` row ID (same value as `wallet_access_id` in a `GrantEntry`)
-- `.access.walletId` — the EVM wallet DB ID
-- `.access.sdkClientId` — the SDK client DB ID
-
-- [ ] **Step 2: Verify**
-
-```sh
-cd operator && flutter analyze lib/features/connection/evm/wallet_access.dart
-```
-
-Expected: no issues.
-
-- [ ] **Step 3: Commit**
-
-```sh
-jj describe -m "feat(evm): add listAllWalletAccesses feature function"
-jj new
-```
-
----
-
-## Task 3: Create `WalletAccessListProvider`
-
-**Files:**
-- Create: `operator/lib/providers/sdk_clients/wallet_access_list.dart`
-- Generated: `operator/lib/providers/sdk_clients/wallet_access_list.g.dart`
-
-Mirrors the structure of `EvmGrants` in `providers/evm/evm_grants.dart` — class-based `@riverpod` with a `refresh()` method.
-
-- [ ] **Step 1: Write the provider**
-
-Create `operator/lib/providers/sdk_clients/wallet_access_list.dart`:
-
-```dart
-import 'package:arbiter/features/connection/evm/wallet_access.dart';
-import 'package:arbiter/proto/operator.pb.dart';
-import 'package:arbiter/providers/connection/connection_manager.dart';
-import 'package:mtcore/markettakers.dart';
-import 'package:riverpod_annotation/riverpod_annotation.dart';
-
-part 'wallet_access_list.g.dart';
-
-@riverpod
-class WalletAccessList extends _$WalletAccessList {
-  @override
-  Future<List<SdkClientWalletAccess>?> build() async {
-    final connection = await ref.watch(connectionManagerProvider.future);
-    if (connection == null) {
-      return null;
-    }
-
-    try {
-      return await listAllWalletAccesses(connection);
-    } catch (e, st) {
-      talker.handle(e, st);
-      rethrow;
-    }
-  }
-
-  Future<void> refresh() async {
-    final connection = await ref.read(connectionManagerProvider.future);
-    if (connection == null) {
-      state = const AsyncData(null);
-      return;
-    }
-
-    state = const AsyncLoading();
-    state = await AsyncValue.guard(() => listAllWalletAccesses(connection));
-  }
-}
-```
-
-- [ ] **Step 2: Run code generation**
-
-```sh
-cd operator && dart run build_runner build --delete-conflicting-outputs
-```
-
-Expected: `operator/lib/providers/sdk_clients/wallet_access_list.g.dart` created. No errors.
-
-- [ ] **Step 3: Verify**
-
-```sh
-cd operator && flutter analyze lib/providers/sdk_clients/
-```
-
-Expected: no issues.
-
-- [ ] **Step 4: Commit**
-
-```sh
-jj describe -m "feat(providers): add WalletAccessListProvider"
-jj new
-```
-
----
-
-## Task 4: Create `GrantCard` widget
-
-**Files:**
-- Create: `operator/lib/screens/dashboard/evm/grants/widgets/grant_card.dart`
-
-This widget owns all per-card logic: enrichment lookups, revoke action, and rebuild scope. The screen only passes it a `GrantEntry` — the card fetches everything else itself.
-
-**Key types:**
-- `GrantEntry` (from `proto/evm.pb.dart`): `.id`, `.shared.walletAccessId`, `.shared.chainId`, `.specific.whichGrant()`
-- `SpecificGrant_Grant.etherTransfer` / `.tokenTransfer` — enum values for the oneof
-- `SdkClientWalletAccess` (from `proto/operator.pb.dart`): `.id`, `.access.walletId`, `.access.sdkClientId`
-- `WalletEntry` (from `proto/evm.pb.dart`): `.id`, `.address` (List<int>)
-- `SdkClientEntry` (from `proto/operator.pb.dart`): `.id`, `.info.name`
-- `revokeEvmGrantMutation` — `Mutation<void>` (global; all revoke buttons disable together while any revoke is in flight)
-- `executeRevokeEvmGrant(ref, grantId: int)` — `Future<void>`
-
-- [ ] **Step 1: Write the widget**
-
-Create `operator/lib/screens/dashboard/evm/grants/widgets/grant_card.dart`:
-
-```dart
-import 'package:arbiter/proto/evm.pb.dart';
-import 'package:arbiter/proto/operator.pb.dart';
-import 'package:arbiter/providers/evm/evm.dart';
-import 'package:arbiter/providers/evm/evm_grants.dart';
-import 'package:arbiter/providers/sdk_clients/list.dart';
-import 'package:arbiter/providers/sdk_clients/wallet_access_list.dart';
-import 'package:arbiter/theme/palette.dart';
-import 'package:flutter/material.dart';
-import 'package:hooks_riverpod/experimental/mutation.dart';
-import 'package:hooks_riverpod/hooks_riverpod.dart';
-import 'package:sizer/sizer.dart';
-
-String _shortAddress(List<int> bytes) {
-  final hex = bytes.map((b) => b.toRadixString(16).padLeft(2, '0')).join();
-  return '0x${hex.substring(0, 6)}...${hex.substring(hex.length - 4)}';
-}
-
-String _formatError(Object error) {
-  final message = error.toString();
-  if (message.startsWith('Exception: ')) {
-    return message.substring('Exception: '.length);
-  }
-  return message;
-}
-
-class GrantCard extends ConsumerWidget {
-  const GrantCard({super.key, required this.grant});
-
-  final GrantEntry grant;
-
-  @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    // Enrichment lookups — each watch scopes rebuilds to this card only
-    final walletAccesses =
-        ref.watch(walletAccessListProvider).asData?.value ?? const [];
-    final wallets = ref.watch(evmProvider).asData?.value ?? const [];
-    final clients = ref.watch(sdkClientsProvider).asData?.value ?? const [];
-    final revoking = ref.watch(revokeEvmGrantMutation) is MutationPending;
-
-    final isEther =
-        grant.specific.whichGrant() == SpecificGrant_Grant.etherTransfer;
-    final accent = isEther ? Palette.coral : Palette.token;
-    final typeLabel = isEther ? 'Ether' : 'Token';
-    final theme = Theme.of(context);
-    final muted = Palette.ink.withValues(alpha: 0.62);
-
-    // Resolve wallet_access_id → wallet address + client name
-    final accessById = <int, SdkClientWalletAccess>{
-      for (final a in walletAccesses) a.id: a,
-    };
-    final walletById = <int, WalletEntry>{
-      for (final w in wallets) w.id: w,
-    };
-    final clientNameById = <int, String>{
-      for (final c in clients) c.id: c.info.name,
-    };
-
-    final accessId = grant.shared.walletAccessId;
-    final access = accessById[accessId];
-    final wallet = access != null ? walletById[access.access.walletId] : null;
-
-    final walletLabel = wallet != null
-        ? _shortAddress(wallet.address)
-        : 'Access #$accessId';
-
-    final clientLabel = () {
-      if (access == null) return '';
-      final name = clientNameById[access.access.sdkClientId] ?? '';
-      return name.isEmpty ? 'Client #${access.access.sdkClientId}' : name;
-    }();
-
-    void showError(String message) {
-      if (!context.mounted) return;
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(content: Text(message), behavior: SnackBarBehavior.floating),
-      );
-    }
-
-    Future<void> revoke() async {
-      try {
-        await executeRevokeEvmGrant(ref, grantId: grant.id);
-      } catch (e) {
-        showError(_formatError(e));
-      }
-    }
-
-    return Container(
-      decoration: BoxDecoration(
-        borderRadius: BorderRadius.circular(24),
-        color: Palette.cream.withValues(alpha: 0.92),
-        border: Border.all(color: Palette.line),
-      ),
-      child: IntrinsicHeight(
-        child: Row(
-          crossAxisAlignment: CrossAxisAlignment.stretch,
-          children: [
-            // Accent strip
-            Container(
-              width: 0.8.w,
-              decoration: BoxDecoration(
-                color: accent,
-                borderRadius: const BorderRadius.horizontal(
-                  left: Radius.circular(24),
-                ),
-              ),
-            ),
-            // Card body
-            Expanded(
-              child: Padding(
-                padding: EdgeInsets.symmetric(
-                  horizontal: 1.6.w,
-                  vertical: 1.4.h,
-                ),
-                child: Column(
-                  crossAxisAlignment: CrossAxisAlignment.start,
-                  children: [
-                    // Row 1: type badge · chain · spacer · revoke button
-                    Row(
-                      children: [
-                        Container(
-                          padding: EdgeInsets.symmetric(
-                            horizontal: 1.w,
-                            vertical: 0.4.h,
-                          ),
-                          decoration: BoxDecoration(
-                            color: accent.withValues(alpha: 0.15),
-                            borderRadius: BorderRadius.circular(8),
-                          ),
-                          child: Text(
-                            typeLabel,
-                            style: theme.textTheme.labelSmall?.copyWith(
-                              color: accent,
-                              fontWeight: FontWeight.w800,
-                            ),
-                          ),
-                        ),
-                        SizedBox(width: 1.w),
-                        Container(
-                          padding: EdgeInsets.symmetric(
-                            horizontal: 1.w,
-                            vertical: 0.4.h,
-                          ),
-                          decoration: BoxDecoration(
-                            color: Palette.ink.withValues(alpha: 0.06),
-                            borderRadius: BorderRadius.circular(8),
-                          ),
-                          child: Text(
-                            'Chain ${grant.shared.chainId}',
-                            style: theme.textTheme.labelSmall?.copyWith(
-                              color: muted,
-                              fontWeight: FontWeight.w700,
-                            ),
-                          ),
-                        ),
-                        const Spacer(),
-                        if (revoking)
-                          SizedBox(
-                            width: 1.8.h,
-                            height: 1.8.h,
-                            child: CircularProgressIndicator(
-                              strokeWidth: 2,
-                              color: Palette.coral,
-                            ),
-                          )
-                        else
-                          OutlinedButton.icon(
-                            onPressed: revoke,
-                            style: OutlinedButton.styleFrom(
-                              foregroundColor: Palette.coral,
-                              side: BorderSide(
-                                color: Palette.coral.withValues(alpha: 0.4),
-                              ),
-                              padding: EdgeInsets.symmetric(
-                                horizontal: 1.w,
-                                vertical: 0.6.h,
-                              ),
-                              shape: RoundedRectangleBorder(
-                                borderRadius: BorderRadius.circular(10),
-                              ),
-                            ),
-                            icon: const Icon(Icons.block_rounded, size: 16),
-                            label: const Text('Revoke'),
-                          ),
-                      ],
-                    ),
-                    SizedBox(height: 0.8.h),
-                    // Row 2: wallet address · client name
-                    Row(
-                      children: [
-                        Text(
-                          walletLabel,
-                          style: theme.textTheme.bodySmall?.copyWith(
-                            color: Palette.ink,
-                            fontFamily: 'monospace',
-                          ),
-                        ),
-                        Padding(
-                          padding: EdgeInsets.symmetric(horizontal: 0.8.w),
-                          child: Text(
-                            '·',
-                            style: theme.textTheme.bodySmall
-                                ?.copyWith(color: muted),
-                          ),
-                        ),
-                        Expanded(
-                          child: Text(
-                            clientLabel,
-                            maxLines: 1,
-                            overflow: TextOverflow.ellipsis,
-                            style: theme.textTheme.bodySmall
-                                ?.copyWith(color: muted),
-                          ),
-                        ),
-                      ],
-                    ),
-                  ],
-                ),
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-}
-```
-
-- [ ] **Step 2: Verify**
-
-```sh
-cd operator && flutter analyze lib/screens/dashboard/evm/grants/widgets/grant_card.dart
-```
-
-Expected: no issues.
-
-- [ ] **Step 3: Commit**
-
-```sh
-jj describe -m "feat(grants): add GrantCard widget with self-contained enrichment"
-jj new
-```
-
----
-
-## Task 5: Create `EvmGrantsScreen`
-
-**Files:**
-- Create: `operator/lib/screens/dashboard/evm/grants/grants.dart`
-
-The screen watches only `evmGrantsProvider` for top-level state (loading / error / no connection / empty / data). When there is data it renders a list of `GrantCard` widgets — each card manages its own enrichment subscriptions.
-
-- [ ] **Step 1: Write the screen**
-
-Create `operator/lib/screens/dashboard/evm/grants/grants.dart`:
-
-```dart
-import 'package:arbiter/proto/evm.pb.dart';
-import 'package:arbiter/providers/evm/evm_grants.dart';
-import 'package:arbiter/providers/sdk_clients/wallet_access_list.dart';
-import 'package:arbiter/router.gr.dart';
-import 'package:arbiter/screens/dashboard/evm/grants/widgets/grant_card.dart';
-import 'package:arbiter/theme/palette.dart';
-import 'package:arbiter/widgets/page_header.dart';
-import 'package:auto_route/auto_route.dart';
-import 'package:flutter/material.dart';
-import 'package:hooks_riverpod/hooks_riverpod.dart';
-import 'package:sizer/sizer.dart';
-
-String _formatError(Object error) {
-  final message = error.toString();
-  if (message.startsWith('Exception: ')) {
-    return message.substring('Exception: '.length);
-  }
-  return message;
-}
-
-// ─── State panel ──────────────────────────────────────────────────────────────
-
-class _StatePanel extends StatelessWidget {
-  const _StatePanel({
-    required this.icon,
-    required this.title,
-    required this.body,
-    this.actionLabel,
-    this.onAction,
-    this.busy = false,
-  });
-
-  final IconData icon;
-  final String title;
-  final String body;
-  final String? actionLabel;
-  final Future<void> Function()? onAction;
-  final bool busy;
-
-  @override
-  Widget build(BuildContext context) {
-    final theme = Theme.of(context);
-
-    return Container(
-      decoration: BoxDecoration(
-        borderRadius: BorderRadius.circular(24),
-        color: Palette.cream.withValues(alpha: 0.92),
-        border: Border.all(color: Palette.line),
-      ),
-      child: Padding(
-        padding: EdgeInsets.all(2.8.h),
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: [
-            if (busy)
-              SizedBox(
-                width: 2.8.h,
-                height: 2.8.h,
-                child: const CircularProgressIndicator(strokeWidth: 2.5),
-              )
-            else
-              Icon(icon, size: 34, color: Palette.coral),
-            SizedBox(height: 1.8.h),
-            Text(
-              title,
-              style: theme.textTheme.headlineSmall?.copyWith(
-                color: Palette.ink,
-                fontWeight: FontWeight.w800,
-              ),
-            ),
-            SizedBox(height: 1.h),
-            Text(
-              body,
-              style: theme.textTheme.bodyLarge?.copyWith(
-                color: Palette.ink.withValues(alpha: 0.72),
-                height: 1.5,
-              ),
-            ),
-            if (actionLabel != null && onAction != null) ...[
-              SizedBox(height: 2.h),
-              OutlinedButton.icon(
-                onPressed: () => onAction!(),
-                icon: const Icon(Icons.refresh),
-                label: Text(actionLabel!),
-              ),
-            ],
-          ],
-        ),
-      ),
-    );
-  }
-}
-
-// ─── Grant list ───────────────────────────────────────────────────────────────
-
-class _GrantList extends StatelessWidget {
-  const _GrantList({required this.grants});
-
-  final List<GrantEntry> grants;
-
-  @override
-  Widget build(BuildContext context) {
-    return Column(
-      children: [
-        for (var i = 0; i < grants.length; i++)
-          Padding(
-            padding: EdgeInsets.only(
-              bottom: i == grants.length - 1 ? 0 : 1.8.h,
-            ),
-            child: GrantCard(grant: grants[i]),
-          ),
-      ],
-    );
-  }
-}
-
-// ─── Screen ───────────────────────────────────────────────────────────────────
-
-@RoutePage()
-class EvmGrantsScreen extends ConsumerWidget {
-  const EvmGrantsScreen({super.key});
-
-  @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    // Screen watches only the grant list for top-level state decisions
-    final grantsAsync = ref.watch(evmGrantsProvider);
-
-    Future<void> refresh() async {
-      await Future.wait([
-        ref.read(evmGrantsProvider.notifier).refresh(),
-        ref.read(walletAccessListProvider.notifier).refresh(),
-      ]);
-    }
-
-    void showMessage(String message) {
-      if (!context.mounted) return;
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(content: Text(message), behavior: SnackBarBehavior.floating),
-      );
-    }
-
-    Future<void> safeRefresh() async {
-      try {
-        await refresh();
-      } catch (e) {
-        showMessage(_formatError(e));
-      }
-    }
-
-    final grantsState = grantsAsync.asData?.value;
-    final grants = grantsState?.grants;
-
-    final content = switch (grantsAsync) {
-      AsyncLoading() when grantsState == null => const _StatePanel(
-        icon: Icons.hourglass_top,
-        title: 'Loading grants',
-        body: 'Pulling grant registry from Arbiter.',
-        busy: true,
-      ),
-      AsyncError(:final error) => _StatePanel(
-        icon: Icons.sync_problem,
-        title: 'Grant registry unavailable',
-        body: _formatError(error),
-        actionLabel: 'Retry',
-        onAction: safeRefresh,
-      ),
-      AsyncData(:final value) when value == null => _StatePanel(
-        icon: Icons.portable_wifi_off,
-        title: 'No active server connection',
-        body: 'Reconnect to Arbiter to list EVM grants.',
-        actionLabel: 'Refresh',
-        onAction: safeRefresh,
-      ),
-      _ when grants != null && grants.isEmpty => _StatePanel(
-        icon: Icons.policy_outlined,
-        title: 'No grants yet',
-        body: 'Create a grant to allow SDK clients to sign transactions.',
-        actionLabel: 'Create grant',
-        onAction: () => context.router.push(const CreateEvmGrantRoute()),
-      ),
-      _ => _GrantList(grants: grants ?? const []),
-    };
-
-    return Scaffold(
-      body: SafeArea(
-        child: RefreshIndicator.adaptive(
-          color: Palette.ink,
-          backgroundColor: Colors.white,
-          onRefresh: safeRefresh,
-          child: ListView(
-            physics: const BouncingScrollPhysics(
-              parent: AlwaysScrollableScrollPhysics(),
-            ),
-            padding: EdgeInsets.fromLTRB(2.4.w, 2.4.h, 2.4.w, 3.2.h),
-            children: [
-              PageHeader(
-                title: 'EVM Grants',
-                isBusy: grantsAsync.isLoading,
-                actions: [
-                  FilledButton.icon(
-                    onPressed: () =>
-                        context.router.push(const CreateEvmGrantRoute()),
-                    icon: const Icon(Icons.add_rounded),
-                    label: const Text('Create grant'),
-                  ),
-                  SizedBox(width: 1.w),
-                  OutlinedButton.icon(
-                    onPressed: safeRefresh,
-                    style: OutlinedButton.styleFrom(
-                      foregroundColor: Palette.ink,
-                      side: BorderSide(color: Palette.line),
-                      padding: EdgeInsets.symmetric(
-                        horizontal: 1.4.w,
-                        vertical: 1.2.h,
-                      ),
-                      shape: RoundedRectangleBorder(
-                        borderRadius: BorderRadius.circular(14),
-                      ),
-                    ),
-                    icon: const Icon(Icons.refresh, size: 18),
-                    label: const Text('Refresh'),
-                  ),
-                ],
-              ),
-              SizedBox(height: 1.8.h),
-              content,
-            ],
-          ),
-        ),
-      ),
-    );
-  }
-}
-```
-
-- [ ] **Step 2: Verify**
-
-```sh
-cd operator && flutter analyze lib/screens/dashboard/evm/grants/
-```
-
-Expected: no issues.
-
-- [ ] **Step 3: Commit**
-
-```sh
-jj describe -m "feat(grants): add EvmGrantsScreen"
-jj new
-```
-
----
-
-## Task 6: Wire router and dashboard tab
-
-**Files:**
-- Modify: `operator/lib/router.dart`
-- Modify: `operator/lib/screens/dashboard.dart`
-- Regenerated: `operator/lib/router.gr.dart`
-
-- [ ] **Step 1: Add route to `router.dart`**
-
-Replace the contents of `operator/lib/router.dart` with:
-
-```dart
-import 'package:auto_route/auto_route.dart';
-
-import 'router.gr.dart';
-
-@AutoRouterConfig(generateForDir: ['lib/screens'])
-class Router extends RootStackRouter {
-  @override
-  List<AutoRoute> get routes => [
-    AutoRoute(page: Bootstrap.page, path: '/bootstrap', initial: true),
-    AutoRoute(page: ServerInfoSetupRoute.page, path: '/server-info'),
-    AutoRoute(page: ServerConnectionRoute.page, path: '/server-connection'),
-    AutoRoute(page: VaultSetupRoute.page, path: '/vault'),
-    AutoRoute(page: ClientDetailsRoute.page, path: '/clients/:clientId'),
-    AutoRoute(page: CreateEvmGrantRoute.page, path: '/evm-grants/create'),
-
-    AutoRoute(
-      page: DashboardRouter.page,
-      path: '/dashboard',
-      children: [
-        AutoRoute(page: EvmRoute.page, path: 'evm'),
-        AutoRoute(page: ClientsRoute.page, path: 'clients'),
-        AutoRoute(page: EvmGrantsRoute.page, path: 'grants'),
-        AutoRoute(page: AboutRoute.page, path: 'about'),
-      ],
-    ),
-  ];
-}
-```
-
-- [ ] **Step 2: Update `dashboard.dart`**
-
-In `operator/lib/screens/dashboard.dart`, replace the `routes` constant:
-
-```dart
-final routes = [
-  const EvmRoute(),
-  const ClientsRoute(),
-  const EvmGrantsRoute(),
-  const AboutRoute(),
-];
-```
-
-And replace the `destinations` list inside `AdaptiveScaffold`:
-
-```dart
-destinations: const [
-  NavigationDestination(
-    icon: Icon(Icons.account_balance_wallet_outlined),
-    selectedIcon: Icon(Icons.account_balance_wallet),
-    label: 'Wallets',
-  ),
-  NavigationDestination(
-    icon: Icon(Icons.devices_other_outlined),
-    selectedIcon: Icon(Icons.devices_other),
-    label: 'Clients',
-  ),
-  NavigationDestination(
-    icon: Icon(Icons.policy_outlined),
-    selectedIcon: Icon(Icons.policy),
-    label: 'Grants',
-  ),
-  NavigationDestination(
-    icon: Icon(Icons.info_outline),
-    selectedIcon: Icon(Icons.info),
-    label: 'About',
-  ),
-],
-```
-
-- [ ] **Step 3: Regenerate router**
-
-```sh
-cd operator && dart run build_runner build --delete-conflicting-outputs
-```
-
-Expected: `lib/router.gr.dart` updated, `EvmGrantsRoute` now available, no errors.
-
-- [ ] **Step 4: Full project verify**
-
-```sh
-cd operator && flutter analyze
-```
-
-Expected: no issues.
-
-- [ ] **Step 5: Commit**
-
-```sh
-jj describe -m "feat(nav): add Grants dashboard tab"
-jj new
-```

docs/superpowers/specs/2026-03-28-grant-grid-view-design.md

@@ -1,170 +0,0 @@
-# Grant Grid View — Design Spec
-
-**Date:** 2026-03-28
-
-## Overview
-
-Add a "Grants" dashboard tab to the Flutter operator app that displays all EVM grants as a card-based grid. Each card shows a compact summary (type, chain, wallet address, client name) with a revoke action. The tab integrates into the existing `AdaptiveScaffold` navigation alongside Wallets, Clients, and About.
-
-## Scope
-
-- New `walletAccessListProvider` for fetching wallet access entries with their DB row IDs
-- New `EvmGrantsScreen` as a dashboard tab
-- Grant card widget with enriched display (type, chain, wallet, client)
-- Revoke action wired to existing `executeRevokeEvmGrant` mutation
-- Dashboard tab bar and router updated
-- New token-transfer accent color added to `Palette`
-
-**Out of scope:** Fixing grant creation (separate task).
-
----
-
-## Data Layer
-
-### `walletAccessListProvider`
-
-**File:** `operator/lib/providers/sdk_clients/wallet_access_list.dart`
-
-- `@riverpod` class, watches `connectionManagerProvider.future`
-- Returns `List<SdkClientWalletAccess>?` (null when not connected)
-- Each entry: `.id` (wallet_access_id), `.access.walletId`, `.access.sdkClientId`
-- Exposes a `refresh()` method following the same pattern as `EvmGrants.refresh()`
-
-### Enrichment at render time (Approach A)
-
-The `EvmGrantsScreen` watches four providers:
-1. `evmGrantsProvider` — the grant list
-2. `walletAccessListProvider` — to resolve wallet_access_id → (wallet_id, sdk_client_id)
-3. `evmProvider` — to resolve wallet_id → wallet address
-4. `sdkClientsProvider` — to resolve sdk_client_id → client name
-
-All lookups are in-memory Maps built inside the build method; no extra model class needed.
-
-Fallbacks:
-- Wallet address not found → `"Access #N"` where N is the wallet_access_id
-- Client name not found → `"Client #N"` where N is the sdk_client_id
-
----
-
-## Route Structure
-
-```
-/dashboard
-  /evm          ← existing (Wallets tab)
-  /clients      ← existing (Clients tab)
-  /grants       ← NEW (Grants tab)
-  /about        ← existing
-
-/evm-grants/create  ← existing push route (unchanged)
-```
-
-### Changes to `router.dart`
-
-Add inside dashboard children:
-```dart
-AutoRoute(page: EvmGrantsRoute.page, path: 'grants'),
-```
-
-### Changes to `dashboard.dart`
-
-Add to `routes` list:
-```dart
-const EvmGrantsRoute()
-```
-
-Add `NavigationDestination`:
-```dart
-NavigationDestination(
-  icon: Icon(Icons.policy_outlined),
-  selectedIcon: Icon(Icons.policy),
-  label: 'Grants',
-),
-```
-
----
-
-## Screen: `EvmGrantsScreen`
-
-**File:** `operator/lib/screens/dashboard/evm/grants/grants.dart`
-
-```
-Scaffold
-└─ SafeArea
-   └─ RefreshIndicator.adaptive (refreshes evmGrantsProvider + walletAccessListProvider)
-      └─ ListView (BouncingScrollPhysics + AlwaysScrollableScrollPhysics)
-         ├─ PageHeader
-         │    title: 'EVM Grants'
-         │    isBusy: evmGrantsProvider.isLoading
-         │    actions: [CreateGrantButton, RefreshButton]
-         ├─ SizedBox(height: 1.8.h)
-         └─ <content>
-```
-
-### State handling
-
-Matches the pattern from `EvmScreen` and `ClientsScreen`:
-
-| State | Display |
-|---|---|
-| Loading (no data yet) | `_StatePanel` with spinner, "Loading grants" |
-| Error | `_StatePanel` with coral icon, error message, Retry button |
-| No connection | `_StatePanel`, "No active server connection" |
-| Empty list | `_StatePanel`, "No grants yet", with Create Grant shortcut |
-| Data | Column of `_GrantCard` widgets |
-
-### Header actions
-
-**CreateGrantButton:** `FilledButton.icon` with `Icons.add_rounded`, pushes `CreateEvmGrantRoute()` via `context.router.push(...)`.
-
-**RefreshButton:** `OutlinedButton.icon` with `Icons.refresh`, calls `ref.read(evmGrantsProvider.notifier).refresh()`.
-
----
-
-## Grant Card: `_GrantCard`
-
-**Layout:**
-
-```
-Container (rounded 24, Palette.cream bg, Palette.line border)
-└─ IntrinsicHeight > Row
-   ├─ Accent strip (0.8.w wide, full height, rounded left)
-   └─ Padding > Column
-        ├─ Row 1: TypeBadge + ChainChip + Spacer + RevokeButton
-        └─ Row 2: WalletText + "·" + ClientText
-```
-
-**Accent color by grant type:**
-- Ether transfer → `Palette.coral`
-- Token transfer → `Palette.token` (new entry in `Palette` — indigo, e.g. `Color(0xFF5C6BC0)`)
-
-**TypeBadge:** Small pill container with accent color background at 15% opacity, accent-colored text. Label: `'Ether'` or `'Token'`.
-
-**ChainChip:** Small container: `'Chain ${grant.shared.chainId}'`, muted ink color.
-
-**WalletText:** Short hex address (`0xabc...def`) from wallet lookup, `bodySmall`, monospace font family.
-
-**ClientText:** Client name from `sdkClientsProvider` lookup, or fallback string. `bodySmall`, muted ink.
-
-**RevokeButton:**
-- `OutlinedButton` with `Icons.block_rounded` icon, label `'Revoke'`
-- `foregroundColor: Palette.coral`, `side: BorderSide(color: Palette.coral.withValues(alpha: 0.4))`
-- Disabled (replaced with `CircularProgressIndicator`) while `revokeEvmGrantMutation` is pending — note: this is a single global mutation, so all revoke buttons disable while any revoke is in flight
-- On press: calls `executeRevokeEvmGrant(ref, grantId: grant.id)`; shows `SnackBar` on error
-
----
-
-## Adaptive Sizing
-
-All sizing uses `sizer` units (`1.h`, `1.w`, etc.). No hardcoded pixel values.
-
----
-
-## Files to Create / Modify
-
-| File | Action |
-|---|---|
-| `lib/theme/palette.dart` | Modify — add `Palette.token` color |
-| `lib/providers/sdk_clients/wallet_access_list.dart` | Create |
-| `lib/screens/dashboard/evm/grants/grants.dart` | Create |
-| `lib/router.dart` | Modify — add grants route to dashboard children |
-| `lib/screens/dashboard.dart` | Modify — add tab to routes list and NavigationDestinations |

mise.toml

@@ -22,3 +22,5 @@ run = '''
 dart pub global activate protoc_plugin && \
 protoc --dart_out=grpc:useragent/lib/proto --proto_path=protobufs/ $(find protobufs -name '*.proto' | sort)
 '''
+
+[tasks.generate_schema]

protobufs/operator.proto

@@ -4,25 +4,28 @@ package arbiter.operator;
 
 import "operator/auth.proto";
 import "operator/evm.proto";
+import "operator/governance.proto";
 import "operator/sdk_client.proto";
 import "operator/vault/vault.proto";
 
 message OperatorRequest {
   int32 id = 16;
   oneof payload {
-    auth.Request auth = 1;
-    vault.Request vault = 2;
-    evm.Request evm = 3;
-    sdk_client.Request sdk_client = 4;
+    auth.Request            auth        = 1;
+    vault.Request           vault       = 2;
+    evm.Request             evm         = 3;
+    sdk_client.Request      sdk_client  = 4;
+    governance.Request      governance  = 5;
   }
 }
 
 message OperatorResponse {
   optional int32 id = 16;
   oneof payload {
-    auth.Response auth = 1;
-    vault.Response vault = 2;
-    evm.Response evm = 3;
-    sdk_client.Response sdk_client = 4;
+    auth.Response           auth        = 1;
+    vault.Response          vault       = 2;
+    evm.Response            evm         = 3;
+    sdk_client.Response     sdk_client  = 4;
+    governance.Response     governance  = 5;
   }
 }

protobufs/operator/governance.proto

@@ -0,0 +1,136 @@
+syntax = "proto3";
+
+package arbiter.operator.governance;
+
+message Request {
+  oneof payload {
+    CreateProposalRequest create = 1;
+    CastVoteRequest       vote   = 2;
+    QueryPendingRequest   query  = 3;
+  }
+}
+
+message CreateProposalRequest {
+  oneof kind {
+    ApproveSdkClientPayload         approve_sdk_client          = 1;
+    GrantWalletAccessPayload        grant_wallet_access         = 3;
+    ApproveServerUpdatePayload      approve_server_update       = 4;
+    ReplaceOperatorPayload          replace_operator            = 5;
+    UpdateShamirParametersPayload   update_shamir_parameters    = 6;
+    ApprovePersistentGrantPayload   approve_persistent_grant    = 7;
+    ApproveOneOffTransactionPayload approve_one_off_transaction = 8;
+  }
+  optional uint32 ttl_secs = 2;
+}
+
+message ReplaceOperatorPayload {
+  int32 old_operator_id = 1;
+  bytes new_pubkey      = 2;
+}
+
+message UpdateShamirParametersPayload {
+  uint32 new_n = 1;
+}
+
+message ApproveServerUpdatePayload {}
+
+message ApproveSdkClientPayload {
+  int32 client_id = 1;
+}
+
+message GrantWalletAccessPayload {
+  int32 wallet_id = 1;
+  int32 client_id = 2;
+}
+
+message CastVoteRequest {
+  int32 proposal_id = 1;
+  bool  approve     = 2;
+  bytes signature   = 3;
+}
+
+message QueryPendingRequest {}
+
+message Response {
+  oneof payload {
+    CreateProposalResponse created = 1;
+    VoteResponse           voted   = 2;
+    QueryPendingResponse   pending = 3;
+  }
+}
+
+message CreateProposalResponse {
+  int32 proposal_id = 1;
+}
+
+message VoteResponse {
+  VoteOutcome outcome = 1;
+}
+
+enum VoteOutcome {
+  VOTE_OUTCOME_UNSPECIFIED = 0;
+  VOTE_OUTCOME_PENDING     = 1;
+  VOTE_OUTCOME_APPROVED    = 2;
+  VOTE_OUTCOME_REJECTED    = 3;
+}
+
+message ProposalSummary {
+  int32  id            = 1;
+  string kind          = 2;
+  int32  initiator_id  = 3;
+  int64  expires_at    = 4;
+  int64  approve_count = 5;
+  int64  reject_count  = 6;
+}
+
+message QueryPendingResponse {
+  repeated ProposalSummary proposals = 1;
+}
+
+message TransactionRateLimitProto {
+  uint32 count       = 1;
+  int64  window_secs = 2;
+}
+
+message VolumeLimitProto {
+  bytes max_volume  = 1;
+  int64 window_secs = 2;
+}
+
+message EtherTransferSpecProto {
+  repeated bytes   targets = 1;
+  VolumeLimitProto limit   = 2;
+}
+
+message TokenTransferSpecProto {
+  bytes                     token_contract = 1;
+  optional bytes            target         = 2;
+  repeated VolumeLimitProto volume_limits  = 3;
+}
+
+message ApproveOneOffTransactionPayload {
+  int32  client_id                = 1;
+  bytes  wallet_address           = 2;
+  uint64 chain_id                 = 3;
+  uint64 nonce                    = 4;
+  uint64 gas_limit                = 5;
+  bytes  max_fee_per_gas          = 6;
+  bytes  max_priority_fee_per_gas = 7;
+  bytes  to                       = 8;
+  bytes  value                    = 9;
+  bytes  input                    = 10;
+}
+
+message ApprovePersistentGrantPayload {
+  int32                              wallet_access_id         = 1;
+  uint64                             chain_id                 = 2;
+  optional int64                     valid_from_secs          = 3;
+  optional int64                     valid_until_secs         = 4;
+  optional bytes                     max_gas_fee_per_gas      = 5;
+  optional bytes                     max_priority_fee_per_gas = 6;
+  optional TransactionRateLimitProto rate_limit               = 7;
+  oneof specific {
+    EtherTransferSpecProto ether_transfer = 8;
+    TokenTransferSpecProto token_transfer = 9;
+  }
+}

protobufs/operator/vault/bootstrap.proto

@@ -8,15 +8,35 @@ message BootstrapEncryptedKey {
   bytes associated_data = 3;
 }
 
+message DeclareCommittee {
+  uint32 count          = 1;
+  uint32 recovery_count = 2;
+}
+
+message ContributePassphrase {
+  bytes passphrase = 1;
+}
+
+message ContributeRecoveryPassphrase {
+  int32 recovery_operator_id = 1;
+  bytes passphrase            = 2;
+}
+
 enum BootstrapResult {
   BOOTSTRAP_RESULT_UNSPECIFIED = 0;
   BOOTSTRAP_RESULT_SUCCESS = 1;
   BOOTSTRAP_RESULT_ALREADY_BOOTSTRAPPED = 2;
   BOOTSTRAP_RESULT_INVALID_KEY = 3;
+  BOOTSTRAP_RESULT_AWAITING_CONTRIBUTIONS = 4;
 }
 
 message Request {
-  BootstrapEncryptedKey encrypted_key = 2;
+  oneof payload {
+    BootstrapEncryptedKey        encrypted_key                    = 2;
+    DeclareCommittee             declare_committee                = 3;
+    ContributePassphrase         contribute_passphrase            = 4;
+    ContributeRecoveryPassphrase contribute_recovery_passphrase   = 5;
+  }
 }
 
 message Response {

protobufs/operator/vault/rekey.proto

@@ -0,0 +1,30 @@
+syntax = "proto3";
+
+package arbiter.operator.vault.rekey;
+
+message ContributePassphrase {
+  bytes passphrase = 1;
+}
+
+message ContributeRecoveryPassphrase {
+  int32 recovery_operator_id = 1;
+  bytes passphrase           = 2;
+}
+
+enum RekeyResult {
+  REKEY_RESULT_UNSPECIFIED            = 0;
+  REKEY_RESULT_SUCCESS                = 1;
+  REKEY_RESULT_AWAITING_CONTRIBUTIONS = 2;
+  REKEY_RESULT_NOT_IN_PROGRESS        = 3;
+}
+
+message Request {
+  oneof payload {
+    ContributePassphrase         contribute_passphrase          = 1;
+    ContributeRecoveryPassphrase contribute_recovery_passphrase = 2;
+  }
+}
+
+message Response {
+  RekeyResult result = 1;
+}

protobufs/operator/vault/unseal.proto

@@ -15,17 +15,29 @@ message UnsealEncryptedKey {
   bytes associated_data = 3;
 }
 
+message ContributePassphrase {
+  bytes passphrase = 1;
+}
+
+message ContributeRecoveryPassphrase {
+  int32 recovery_operator_id = 1;
+  bytes passphrase            = 2;
+}
+
 enum UnsealResult {
   UNSEAL_RESULT_UNSPECIFIED = 0;
   UNSEAL_RESULT_SUCCESS = 1;
   UNSEAL_RESULT_INVALID_KEY = 2;
   UNSEAL_RESULT_UNBOOTSTRAPPED = 3;
+  UNSEAL_RESULT_AWAITING_CONTRIBUTIONS = 4;
 }
 
 message Request {
   oneof payload {
-    UnsealStart start = 1;
-    UnsealEncryptedKey encrypted_key = 2;
+    UnsealStart                  start                          = 1;
+    UnsealEncryptedKey           encrypted_key                  = 2;
+    ContributePassphrase         contribute_passphrase          = 3;
+    ContributeRecoveryPassphrase contribute_recovery_passphrase = 4;
   }
 }
 

protobufs/operator/vault/vault.proto

@@ -5,20 +5,23 @@ package arbiter.operator.vault;
 import "google/protobuf/empty.proto";
 import "shared/vault.proto";
 import "operator/vault/bootstrap.proto";
+import "operator/vault/rekey.proto";
 import "operator/vault/unseal.proto";
 
 message Request {
   oneof payload {
     google.protobuf.Empty query_state = 1;
-    unseal.Request unseal = 2;
-    bootstrap.Request bootstrap = 3;
+    unseal.Request        unseal      = 2;
+    bootstrap.Request     bootstrap   = 3;
+    rekey.Request         rekey       = 4;
   }
 }
 
 message Response {
   oneof payload {
-    arbiter.shared.VaultState state = 1;
-    unseal.Response unseal = 2;
-    bootstrap.Response bootstrap = 3;
+    arbiter.shared.VaultState state     = 1;
+    unseal.Response           unseal    = 2;
+    bootstrap.Response        bootstrap = 3;
+    rekey.Response            rekey     = 4;
   }
 }

protobufs/shared/vault.proto

@@ -5,7 +5,8 @@ package arbiter.shared;
 enum VaultState {
   VAULT_STATE_UNSPECIFIED = 0;
   VAULT_STATE_UNBOOTSTRAPPED = 1;
-  VAULT_STATE_SEALED = 2;
-  VAULT_STATE_UNSEALED = 3;
-  VAULT_STATE_ERROR = 4;
+  VAULT_STATE_BOOSTRAPPING = 2;
+  VAULT_STATE_SEALED = 3;
+  VAULT_STATE_UNSEALED = 4;
+  VAULT_STATE_ERROR = 5;
 }

server/Cargo.lock

@@ -24,7 +24,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d122413f284cf2d62fb1b7db97e02edb8cda96d769b16e443a4f6195e35662b0"
 dependencies = [
  "crypto-common 0.1.7",
- "generic-array",
+ "generic-array 0.14.7",
 ]
 
 [[package]]
@@ -707,6 +707,7 @@ dependencies = [
  "memsafe",
  "ml-dsa",
  "rand 0.10.1",
+ "strum 0.28.0",
  "thiserror",
  "x-wing",
 ]
@@ -719,7 +720,6 @@ dependencies = [
  "proc-macro2",
  "quote",
  "syn 2.0.117",
- "trybuild",
 ]
 
 [[package]]
@@ -770,8 +770,10 @@ dependencies = [
  "mutants",
  "pem",
  "proptest",
+ "prost",
  "prost-types",
  "rand 0.10.1",
+ "rand_core 0.6.4",
  "rcgen",
  "restructed",
  "rstest",
@@ -787,6 +789,7 @@ dependencies = [
  "tonic",
  "tracing",
  "tracing-subscriber",
+ "vsss-rs",
  "x25519-dalek 2.0.1",
 ]
 
@@ -1284,7 +1287,7 @@ version = "0.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
 dependencies = [
- "generic-array",
+ "generic-array 0.14.7",
 ]
 
 [[package]]
@@ -1613,8 +1616,22 @@ version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0dc92fb57ca44df6db8059111ab3af99a63d5d0f8375d9972e319a379c6bab76"
 dependencies = [
- "generic-array",
+ "generic-array 0.14.7",
  "rand_core 0.6.4",
+ "serdect 0.2.0",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "crypto-bigint"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96272c2ff28b807e09250b180ad1fb7889a3258f7455759b5c3c58b719467130"
+dependencies = [
+ "num-traits",
+ "rand_core 0.6.4",
+ "serdect 0.3.0",
  "subtle",
  "zeroize",
 ]
@@ -1625,7 +1642,7 @@ version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78c8292055d1c1df0cce5d180393dc8cce0abec0a7102adb6c7b1eef6016d60a"
 dependencies = [
- "generic-array",
+ "generic-array 0.14.7",
  "rand_core 0.6.4",
  "typenum",
 ]
@@ -1928,7 +1945,7 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3dd60d1080a57a05ab032377049e0591415d2b31afd7028356dbf3cc6dcb066"
 dependencies = [
- "generic-array",
+ "generic-array 0.14.7",
 ]
 
 [[package]]
@@ -1966,12 +1983,6 @@ dependencies = [
  "syn 2.0.117",
 ]
 
-[[package]]
-name = "dissimilar"
-version = "1.0.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aeda16ab4059c5fd2a83f2b9c9e9c981327b18aa8e3b313f7e6563799d4f093e"
-
 [[package]]
 name = "downcast-rs"
 version = "2.0.2"
@@ -2014,7 +2025,7 @@ dependencies = [
  "digest 0.10.7",
  "elliptic-curve",
  "rfc6979",
- "serdect",
+ "serdect 0.2.0",
  "signature 2.2.0",
  "spki 0.7.3",
 ]
@@ -2047,16 +2058,32 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b5e6043086bf7973472e0c7dff2142ea0b680d30e18d9cc40f267efbf222bd47"
 dependencies = [
  "base16ct",
- "crypto-bigint",
+ "crypto-bigint 0.5.5",
  "digest 0.10.7",
  "ff",
- "generic-array",
+ "generic-array 0.14.7",
  "group",
+ "hkdf",
  "pkcs8 0.10.2",
  "rand_core 0.6.4",
  "sec1",
- "serdect",
+ "serdect 0.2.0",
  "subtle",
+ "tap",
+ "zeroize",
+]
+
+[[package]]
+name = "elliptic-curve-tools"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1de2b6fae800f08032a6ea32995b52925b1d451bff9d445c8ab2932323277faf"
+dependencies = [
+ "elliptic-curve",
+ "heapless",
+ "hex",
+ "multiexp",
+ "serde",
  "zeroize",
 ]
 
@@ -2130,6 +2157,7 @@ version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c0b50bfb653653f9ca9095b427bed08ab8d75a137839d9ad64eb11810d5b6393"
 dependencies = [
+ "bitvec",
  "rand_core 0.6.4",
  "subtle",
 ]
@@ -2330,6 +2358,17 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "generic-array"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dab9e9188e97a93276e1fe7b56401b851e2b45a46d045ca658100c1303ada649"
+dependencies = [
+ "rustversion",
+ "serde_core",
+ "typenum",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.2.17"
@@ -2413,6 +2452,15 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "hash32"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47d60b12902ba28e2730cd37e95b8c9223af2808df9e902d4df49588d1470606"
+dependencies = [
+ "byteorder",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.12.3"
@@ -2453,6 +2501,16 @@ version = "0.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4f467dd6dccf739c208452f8014c75c18bb8301b050ad1cfb27153803edb0f51"
 
+[[package]]
+name = "heapless"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0bfb9eb618601c89945a70e254898da93b13be0388091d42117462b265bb3fad"
+dependencies = [
+ "hash32",
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "heck"
 version = "0.5.0"
@@ -2480,6 +2538,15 @@ dependencies = [
  "arrayvec",
 ]
 
+[[package]]
+name = "hkdf"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b5f8eb2ad728638ea2c7d47a21db23b7b58a72ed6a38256b8a1849f15fbbdf7"
+dependencies = [
+ "hmac 0.12.1",
+]
+
 [[package]]
 name = "hmac"
 version = "0.12.1"
@@ -2550,6 +2617,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d46837a0ed51fe95bd3b05de33cd64a1ee88fc797477ca48446872504507c5"
 dependencies = [
  "ctutils",
+ "serde",
  "typenum",
  "zeroize",
 ]
@@ -2815,7 +2883,7 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "879f10e63c20629ecabbb64a8010319738c66a5cd0c29b02d63d272b03751d01"
 dependencies = [
- "generic-array",
+ "generic-array 0.14.7",
 ]
 
 [[package]]
@@ -2954,15 +3022,15 @@ dependencies = [
  "ecdsa",
  "elliptic-curve",
  "once_cell",
- "serdect",
+ "serdect 0.2.0",
  "sha2 0.10.9",
  "signature 2.2.0",
 ]
 
 [[package]]
 name = "kameo"
-version = "0.20.0"
-source = "git+https://github.com/hdbg/kameo.git?rev=805b417#805b41783fe90b54827ecad142b422c7a9b69b9a"
+version = "0.22.2"
+source = "git+https://github.com/hdbg/kameo.git?rev=17af90e3#17af90e3ae95fc6f89fa31a2f1b9506ac127f0b7"
 dependencies = [
  "downcast-rs",
  "dyn-clone",
@@ -2975,8 +3043,8 @@ dependencies = [
 
 [[package]]
 name = "kameo_actors"
-version = "0.5.0"
-source = "git+https://github.com/hdbg/kameo.git?rev=805b417#805b41783fe90b54827ecad142b422c7a9b69b9a"
+version = "0.8.1"
+source = "git+https://github.com/hdbg/kameo.git?rev=17af90e3#17af90e3ae95fc6f89fa31a2f1b9506ac127f0b7"
 dependencies = [
  "futures",
  "glob",
@@ -2987,14 +3055,13 @@ dependencies = [
 
 [[package]]
 name = "kameo_macros"
-version = "0.20.0"
-source = "git+https://github.com/hdbg/kameo.git?rev=805b417#805b41783fe90b54827ecad142b422c7a9b69b9a"
+version = "0.21.1"
+source = "git+https://github.com/hdbg/kameo.git?rev=17af90e3#17af90e3ae95fc6f89fa31a2f1b9506ac127f0b7"
 dependencies = [
- "darling 0.23.0",
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 3.0.4",
 ]
 
 [[package]]
@@ -3207,7 +3274,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "36c791ecdf977c99f45f23280405d7723727470f6689a5e6dbf513ac547ae10d"
 dependencies = [
  "serde",
- "toml 0.9.12+spec-1.1.0",
+ "toml",
 ]
 
 [[package]]
@@ -3297,6 +3364,20 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "multiexp"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ec2ce93a6f06ac6cae04c1da3f2a6a24fcfc1f0eb0b4e0f3d302f0df45326cb"
+dependencies = [
+ "ff",
+ "group",
+ "rand_core 0.6.4",
+ "rustversion",
+ "std-shims",
+ "zeroize",
+]
+
 [[package]]
 name = "multimap"
 version = "0.10.1"
@@ -3328,6 +3409,20 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "num"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35bd024e8b2ff75562e5f34e7f4905839deb4b22955ef5e73d2fea1b9813cb23"
+dependencies = [
+ "num-bigint",
+ "num-complex",
+ "num-integer",
+ "num-iter",
+ "num-rational",
+ "num-traits",
+]
+
 [[package]]
 name = "num-bigint"
 version = "0.4.6"
@@ -3336,6 +3431,19 @@ checksum = "a5e44f723f1133c9deac646763579fdb3ac745e418f2a7af9cd0c431da1f20b9"
 dependencies = [
  "num-integer",
  "num-traits",
+ "rand 0.8.6",
+ "serde",
+]
+
+[[package]]
+name = "num-complex"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73f88a1307638156682bada9d7604135552957b7818057dcef22705b4d509495"
+dependencies = [
+ "num-traits",
+ "rand 0.8.6",
+ "serde",
 ]
 
 [[package]]
@@ -3353,6 +3461,29 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-iter"
+version = "0.1.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1429034a0490724d0075ebb2bc9e875d6503c3cf69e235a8941aa757d83ef5bf"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-rational"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f83d14da390562dca69fc84082e73e548e1ad308d24accdedd2720017cb37824"
+dependencies = [
+ "num-bigint",
+ "num-integer",
+ "num-traits",
+ "serde",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -4461,9 +4592,9 @@ checksum = "d3e97a565f76233a6003f9f5c54be1d9c5bdfa3eccfb189469f11ec4901c47dc"
 dependencies = [
  "base16ct",
  "der 0.7.10",
- "generic-array",
+ "generic-array 0.14.7",
  "pkcs8 0.10.2",
- "serdect",
+ "serdect 0.2.0",
  "subtle",
  "zeroize",
 ]
@@ -4629,6 +4760,16 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serdect"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f42f67da2385b51a5f9652db9c93d78aeaf7610bf5ec366080b6de810604af53"
+dependencies = [
+ "base16ct",
+ "serde",
+]
+
 [[package]]
 name = "sha2"
 version = "0.10.9"
@@ -4794,6 +4935,12 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "spin"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d5fe4ccb98d9c292d56fec89a5e07da7fc4cf0dc11e156b41793132775d3e591"
+
 [[package]]
 name = "spki"
 version = "0.7.3"
@@ -4838,6 +4985,17 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
 
+[[package]]
+name = "std-shims"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "227c4f8561598188d0df96dbe749824576174bba278b5b6bb2eacff1066067d0"
+dependencies = [
+ "hashbrown 0.16.1",
+ "rustversion",
+ "spin",
+]
+
 [[package]]
 name = "string_morph"
 version = "0.1.0"
@@ -4941,6 +5099,17 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "syn"
+version = "3.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6275cddf4610d1775e6d1fe9469b2e77d0f39fd98fb7450901b821e0c53649f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "syn-solidity"
 version = "1.5.7"
@@ -4979,12 +5148,6 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
 
-[[package]]
-name = "target-triple"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "591ef38edfb78ca4771ee32cf494cb8771944bee237a9b91fc9c1424ac4b777b"
-
 [[package]]
 name = "tempfile"
 version = "3.27.0"
@@ -4998,15 +5161,6 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
-[[package]]
-name = "termcolor"
-version = "1.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06794f8f6c5c898b3275aebefa6b8a1cb24cd2c6c79397ab15774837a0bc5755"
-dependencies = [
- "winapi-util",
-]
-
 [[package]]
 name = "terminal_size"
 version = "0.4.4"
@@ -5229,21 +5383,6 @@ dependencies = [
  "winnow 0.7.15",
 ]
 
-[[package]]
-name = "toml"
-version = "1.1.2+spec-1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81f3d15e84cbcd896376e6730314d59fb5a87f31e4b038454184435cd57defee"
-dependencies = [
- "indexmap 2.14.0",
- "serde_core",
- "serde_spanned",
- "toml_datetime 1.1.1+spec-1.1.0",
- "toml_parser",
- "toml_writer",
- "winnow 1.0.2",
-]
-
 [[package]]
 name = "toml_datetime"
 version = "0.7.5+spec-1.1.0"
@@ -5283,12 +5422,6 @@ dependencies = [
  "winnow 1.0.2",
 ]
 
-[[package]]
-name = "toml_writer"
-version = "1.1.1+spec-1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "756daf9b1013ebe47a8776667b466417e2d4c5679d441c26230efd9ef78692db"
-
 [[package]]
 name = "tonic"
 version = "0.14.5"
@@ -5476,22 +5609,6 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
-[[package]]
-name = "trybuild"
-version = "1.0.117"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0710d4dfbeae4f9c390baa784c49858a7468fa433f3fe5d0ec5ebef651cf59f9"
-dependencies = [
- "dissimilar",
- "glob",
- "serde",
- "serde_derive",
- "serde_json",
- "target-triple",
- "termcolor",
- "toml 1.1.2+spec-1.1.0",
-]
-
 [[package]]
 name = "typenum"
 version = "1.20.0"
@@ -5633,6 +5750,27 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
+[[package]]
+name = "vsss-rs"
+version = "5.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ec751bdcc8bda099e269b24cc6b4ad14f9ce8b0490c1599174070e792ecd70c"
+dependencies = [
+ "crypto-bigint 0.5.5",
+ "crypto-bigint 0.6.1",
+ "elliptic-curve",
+ "elliptic-curve-tools",
+ "generic-array 1.4.1",
+ "hex",
+ "hybrid-array",
+ "num",
+ "rand_core 0.6.4",
+ "serde",
+ "sha3 0.10.9",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "wait-timeout"
 version = "0.2.1"

server/Cargo.toml

@@ -12,8 +12,8 @@ base64 = "0.22.1"
 chrono = { version = "0.4.44", features = ["serde"] }
 futures = "0.3.32"
 k256 = { version = "0.13.4", features = ["ecdsa", "pkcs8"] }
-kameo = {git = "https://github.com/hdbg/kameo.git", rev = "805b417"}
-kameo_actors = {git = "https://github.com/hdbg/kameo.git", rev = "805b417"}
+kameo = {git = "https://github.com/hdbg/kameo.git", rev = "17af90e3"}
+kameo_actors = {git = "https://github.com/hdbg/kameo.git", rev = "17af90e3"}
 hmac = "0.13.0"
 miette = { version = "7.6.0", features = ["fancy", "serde"] }
 ml-dsa = { version = "0.1.0-rc.9", features = ["zeroize"] }
@@ -27,6 +27,7 @@ rustls = { version = "0.23.40", features = ["aws-lc-rs", "logging", "prefer-post
 rustls-pki-types = "1.14.1"
 sha2 = "0.11"
 smlang = "0.8.0"
+strum = { version = "0.28.0", features = ["derive"] }
 thiserror = "2.0.18"
 tokio = { version = "1.52.1", features = ["full"] }
 tokio-stream = { version = "0.1.18", features = ["full"] }
@@ -76,7 +77,6 @@ needless_pass_by_ref_mut = "allow"
 pub_underscore_fields = "allow"
 redundant_pub_crate = "allow" 
 uninhabited_references = "allow" # safe with unsafe_code = "forbid" and standard uninhabited pattern (match *self {})
-too-many-lines = "allow" # this is a very common pattern in server code, and it's not always possible to break it down into smaller modules without hurting readability
 
 # restriction lints
 alloc_instead_of_core = "warn"
@@ -107,7 +107,6 @@ indexing_slicing = "warn"
 infinite_loop = "warn"
 inline_asm_x86_att_syntax = "warn"
 inline_asm_x86_intel_syntax = "warn"
-integer_division = "warn"
 large_include_file = "warn"
 lossy_float_literal = "warn"
 map_with_unused_argument_over_ranges = "warn"
@@ -129,6 +128,7 @@ rc_buffer = "warn"
 rc_mutex = "warn"
 redundant_test_prefix = "warn"
 redundant_type_annotations = "warn"
+ref_patterns = "warn"
 renamed_function_params = "warn"
 rest_pat_in_fully_bound_structs = "warn"
 return_and_then = "warn"
@@ -168,3 +168,4 @@ nursery = { level = "warn", priority = -1 }
 pedantic = { level = "warn", priority = -1 }
 
 type_repetition_in_bounds = "allow"   # sometimes, it's better for readability this way
+unused_async_trait_impl = "allow"

server/clippy.toml

@@ -26,3 +26,5 @@ trait-assoc-item-kinds-order = [
     "type",
     "fn",
 ] # community tested standard
+
+too-many-lines-threshold = 150

server/crates/arbiter-client/src/auth.rs

@@ -2,7 +2,7 @@ use crate::{
     storage::StorageError,
     transport::{ClientTransport, next_request_id},
 };
-use arbiter_crypto::authn::{self, CLIENT_CONTEXT, SigningKey};
+use arbiter_crypto::authn::{self, SigningContext, SigningKey};
 use arbiter_proto::{
     ClientMetadata,
     proto::{
@@ -100,7 +100,7 @@ async fn send_auth_challenge_solution(
     key: &SigningKey,
     challenge: AuthChallenge,
 ) -> Result<(), AuthError> {
-    let timestamp = DateTime::from_timestamp_nanos(challenge.timestamp_nanos.cast_signed());
+    let timestamp = DateTime::from_timestamp_nanos(challenge.timestamp_nanos as i64);
     let challenge = authn::AuthChallenge {
         nonce: *challenge
             .random
@@ -110,7 +110,7 @@ async fn send_auth_challenge_solution(
     };
     let challenge_payload: Vec<u8> = challenge.format();
     let signature = key
-        .sign_message(&challenge_payload, CLIENT_CONTEXT)
+        .sign_message(&challenge_payload, SigningContext::Client)
         .map_err(|_| AuthError::UnexpectedAuthResponse)?
         .to_bytes();
 

server/crates/arbiter-crypto/Cargo.toml

@@ -7,6 +7,7 @@ edition = "2024"
 ml-dsa = {workspace = true, optional = true }
 rand = {workspace = true, optional = true}
 memsafe = {version = "0.4.0", optional = true}
+strum = { workspace = true, optional = true }
 hmac.workspace = true
 alloy.workspace = true
 x-wing = { version = "0.1.0-rc.0", features = ["zeroize"] }
@@ -18,7 +19,7 @@ workspace = true
 
 [features]
 default = ["authn", "safecell"]
-authn = ["dep:ml-dsa", "dep:rand"]
+authn = ["dep:ml-dsa", "dep:rand", "dep:strum"]
 safecell = ["dep:memsafe"]
 
 [lib]

server/crates/arbiter-crypto/src/authn/v1.rs

@@ -5,9 +5,25 @@ use ml_dsa::{
     SigningKey as MlDsaSigningKey, VerifyingKey as MlDsaVerifyingKey, signature::Keypair as _,
 };
 use rand::RngExt;
+use strum::IntoStaticStr;
 
-pub static CLIENT_CONTEXT: &[u8] = b"arbiter_client";
-pub static OPERATOR_CONTEXT: &[u8] = b"arbiter_operator";
+/// Domain separation tag mixed into every ML-DSA signature.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, IntoStaticStr)]
+pub enum SigningContext {
+    #[strum(serialize = "arbiter_client")]
+    Client,
+    #[strum(serialize = "arbiter_operator")]
+    Operator,
+    #[strum(serialize = "arbiter_governance_vote")]
+    GovernanceVote,
+}
+
+impl SigningContext {
+    #[must_use]
+    pub fn as_bytes(self) -> &'static [u8] {
+        <&'static str>::from(self).as_bytes()
+    }
+}
 
 const NONCE_SIZE: usize = 32;
 
@@ -85,10 +101,26 @@ impl PublicKey {
     }
 
     #[must_use]
-    pub fn verify(&self, challenge: &AuthChallenge, context: &[u8], signature: &Signature) -> bool {
+    pub fn verify(
+        &self,
+        challenge: &AuthChallenge,
+        context: SigningContext,
+        signature: &Signature,
+    ) -> bool {
         let challenge = challenge.format();
         self.0
-            .verify_with_context(&challenge, context, &signature.0)
+            .verify_with_context(&challenge, context.as_bytes(), &signature.0)
+    }
+
+    #[must_use]
+    pub fn verify_message(
+        &self,
+        message: &[u8],
+        context: SigningContext,
+        signature: &Signature,
+    ) -> bool {
+        self.0
+            .verify_with_context(message, context.as_bytes(), &signature.0)
     }
 }
 
@@ -115,17 +147,21 @@ impl SigningKey {
         self.0.verifying_key().into()
     }
 
-    pub fn sign_message(&self, message: &[u8], context: &[u8]) -> Result<Signature, Error> {
+    pub fn sign_message(
+        &self,
+        message: &[u8],
+        context: SigningContext,
+    ) -> Result<Signature, Error> {
         self.0
             .signing_key()
-            .sign_deterministic(message, context)
+            .sign_deterministic(message, context.as_bytes())
             .map(Into::into)
     }
 
     pub fn sign_challenge(
         &self,
         challenge: &AuthChallenge,
-        context: &[u8],
+        context: SigningContext,
     ) -> Result<Signature, Error> {
         let challenge = challenge.format();
 
@@ -192,7 +228,7 @@ mod tests {
 
     use crate::authn::AuthChallenge;
 
-    use super::{CLIENT_CONTEXT, PublicKey, Signature, SigningKey, OPERATOR_CONTEXT};
+    use super::{PublicKey, Signature, SigningContext, SigningKey};
 
     #[test]
     fn public_key_round_trip_decodes() {
@@ -208,7 +244,7 @@ mod tests {
     fn signature_round_trip_decodes() {
         let key = SigningKey::generate();
         let signature = key
-            .sign_message(b"challenge", CLIENT_CONTEXT)
+            .sign_message(b"challenge", SigningContext::Client)
             .expect("signature should be created");
 
         let decoded =
@@ -223,11 +259,11 @@ mod tests {
         let public_key = key.public_key();
         let challenge = AuthChallenge::generate(&mut rand::rng());
         let signature = key
-            .sign_challenge(&challenge, CLIENT_CONTEXT)
+            .sign_challenge(&challenge, SigningContext::Client)
             .expect("signature should be created");
 
-        assert!(public_key.verify(&challenge, CLIENT_CONTEXT, &signature));
-        assert!(!public_key.verify(&challenge, OPERATOR_CONTEXT, &signature));
+        assert!(public_key.verify(&challenge, SigningContext::Client, &signature));
+        assert!(!public_key.verify(&challenge, SigningContext::Operator, &signature));
     }
 
     #[test]
@@ -240,13 +276,13 @@ mod tests {
         let challenge = AuthChallenge::generate(&mut rand::rng());
 
         let signature = restored
-            .sign_challenge(&challenge, CLIENT_CONTEXT)
+            .sign_challenge(&challenge, SigningContext::Client)
             .expect("signature should be created");
 
         assert!(
             restored
                 .public_key()
-                .verify(&challenge, CLIENT_CONTEXT, &signature)
+                .verify(&challenge, SigningContext::Client, &signature)
         );
     }
 }

server/crates/arbiter-crypto/src/integrity.rs

@@ -1,49 +0,0 @@
-use crate::hashing::Hashable;
-
-/// Marks a struct as a participant in the database integrity system.
-///
-/// Implementors are protected by an HMAC-SHA256 MAC stored in the
-/// `integrity_envelope` table. The MAC is computed over:
-///
-/// ```text
-/// HMAC-SHA256(key, len(KIND) || KIND || len(entity_id) || entity_id || VERSION || SHA256(Hashable))
-/// ```
-///
-/// Both `KIND` and `VERSION` act as domain separators — they prevent a valid
-/// MAC for one entity type or schema version from being accepted for another.
-///
-/// # Deriving
-///
-/// Use `#[derive(Integrable)]` with the `#[integrable(kind = "...")]` attribute.
-/// `VERSION` is computed automatically as an FNV-1a hash of the struct's field
-/// names and types, so it changes whenever the schema changes without any manual
-/// bookkeeping.
-///
-/// ```rust,ignore
-/// #[derive(Hashable, Integrable)]
-/// #[integrable(kind = "operator_credentials")]
-/// pub struct OperatorCredentials {
-///     pub pubkey: PublicKey,
-/// }
-/// ```
-///
-/// # Upgrading schema
-///
-/// When fields are added, removed, or reordered, `VERSION` changes automatically.
-/// Existing MAC records in the database will return [`PayloadVersionMismatch`] on
-/// verification — this is the signal to re-sign all rows for this `KIND` as part
-/// of a migration.
-///
-/// [`PayloadVersionMismatch`]: crate::integrity::Integrable
-pub trait Integrable: Hashable {
-    /// Stable name of this entity type as stored in `integrity_envelope.entity_kind`.
-    ///
-    /// Must be a valid schema name: starts with a letter, contains only `[a-zA-Z0-9_]`,
-    /// and must be globally unique across all `Integrable` types in the system.
-    const KIND: &'static str;
-
-    /// FNV-1a hash of the struct's field names and types at the time the derive
-    /// macro ran. Changes automatically when the schema changes, invalidating
-    /// existing MACs and signalling that a migration is required.
-    const VERSION: i32;
-}

server/crates/arbiter-crypto/src/lib.rs

@@ -1,7 +1,6 @@
 #[cfg(feature = "authn")]
 pub mod authn;
 pub mod hashing;
-pub mod integrity;
 #[cfg(feature = "safecell")]
 pub mod safecell;
 

server/crates/arbiter-crypto/src/safecell.rs

@@ -22,7 +22,7 @@ pub trait SafeCellHandle<T> {
     fn read(&mut self) -> Self::CellRead<'_>;
     fn write(&mut self) -> Self::CellWrite<'_>;
 
-    fn new_inline<F>(f: F) -> Self
+    fn new_inline_default<F>(f: F) -> Self
     where
         Self: Sized,
         T: Default,
@@ -36,6 +36,14 @@ pub trait SafeCellHandle<T> {
         cell
     }
 
+    fn new_inline<F>(f: Box<F>) -> Self
+    where
+        Self: Sized,
+        F: for<'a> FnOnce() -> T,
+    {
+        Self::new(f())
+    }
+
     #[inline(always)]
     fn read_inline<F, R>(&mut self, f: F) -> R
     where

server/crates/arbiter-macros/Cargo.toml

@@ -14,7 +14,6 @@ syn = { version = "2.0", features = ["derive", "fold", "full", "visit-mut"] }
 
 [dev-dependencies]
 arbiter-crypto = { path = "../arbiter-crypto" }
-trybuild = { version = "1.0", features = ["diff"] }
 
 [lints]
 workspace = true

server/crates/arbiter-macros/src/hashable.rs

@@ -53,16 +53,32 @@ struct FieldAccess {
 
 fn collect_field_accesses(struct_data: &DataStruct) -> Vec<FieldAccess> {
     match &struct_data.fields {
-        Fields::Named(fields) => crate::utils::sorted_named_fields(fields)
-            .into_iter()
-            .map(|field| {
-                let name = field.ident.as_ref().unwrap();
-                FieldAccess {
+        Fields::Named(fields) => {
+            // Keep deterministic alphabetical order for named fields.
+            // Do not remove this sort, because it keeps hash output stable regardless of source order.
+            let mut named_fields = fields
+                .named
+                .iter()
+                .map(|field| {
+                    let name = field
+                        .ident
+                        .as_ref()
+                        .expect("Fields::Named(fields) must have names")
+                        .clone();
+                    (name.to_string(), name)
+                })
+                .collect::<Vec<_>>();
+
+            named_fields.sort_by(|a, b| a.0.cmp(&b.0));
+
+            named_fields
+                .into_iter()
+                .map(|(_, name)| FieldAccess {
                     access: quote! { #name },
                     span: name.span(),
-                }
-            })
-            .collect(),
+                })
+                .collect()
+        }
         Fields::Unnamed(fields) => fields
             .unnamed
             .iter()

server/crates/arbiter-macros/src/integrable.rs

@@ -1,134 +0,0 @@
-use crate::utils::INTEGRABLE_TRAIT_PATH;
-use proc_macro2::TokenStream;
-use quote::quote;
-use syn::{DeriveInput, LitStr, spanned::Spanned as _};
-
-struct IntegrableAttr {
-    kind: String,
-}
-
-impl IntegrableAttr {
-    fn from_attrs(
-        attrs: &[syn::Attribute],
-        ident_span: proc_macro2::Span,
-    ) -> Result<Self, syn::Error> {
-        let mut kind: Option<String> = None;
-        let mut found = false;
-
-        for attr in attrs {
-            if !attr.path().is_ident("integrable") {
-                continue;
-            }
-            if found {
-                return Err(syn::Error::new(attr.span(), "duplicate #[integrable] attribute"));
-            }
-            found = true;
-            attr.parse_nested_meta(|meta| {
-                if meta.path.is_ident("kind") {
-                    let lit: LitStr = meta.value()?.parse()?;
-                    let v = lit.value();
-                    if v.is_empty() {
-                        return Err(syn::Error::new(lit.span(), "kind must not be empty"));
-                    }
-                    if !is_valid_kind(&v) {
-                        return Err(syn::Error::new(
-                            lit.span(),
-                            "kind must be a valid schema name: start with a letter, contain only [a-zA-Z0-9_]",
-                        ));
-                    }
-                    kind = Some(v);
-                } else {
-                    return Err(meta.error("unknown key; expected `kind`"));
-                }
-                Ok(())
-            })?;
-        }
-
-        let kind = kind.ok_or_else(|| {
-            syn::Error::new(ident_span, "#[integrable(kind = \"...\")] is required")
-        })?;
-
-        Ok(Self { kind })
-    }
-}
-
-fn is_valid_kind(s: &str) -> bool {
-    let mut chars = s.chars();
-    matches!(chars.next(), Some(c) if c.is_ascii_alphabetic())
-        && chars.all(|c| c.is_ascii_alphanumeric() || c == '_')
-}
-
-fn fnv1a(data: &[u8], mut hash: u32) -> u32 {
-    const FNV_PRIME: u32 = 16_777_619;
-    for &b in data {
-        hash ^= u32::from(b);
-        hash = hash.wrapping_mul(FNV_PRIME);
-    }
-    hash
-}
-
-// Hashes field names and types using the same alphabetical sort order as Hashable,
-// so that source-level field reordering never changes VERSION.
-fn compute_version(fields: &syn::Fields) -> i32 {
-    const FNV_OFFSET: u32 = 2_166_136_261;
-    let mut hash = FNV_OFFSET;
-
-    match fields {
-        syn::Fields::Named(named) => {
-            for field in crate::utils::sorted_named_fields(named) {
-                let name = field.ident.as_ref().unwrap().to_string();
-                let ty = &field.ty;
-                hash = fnv1a(name.as_bytes(), hash);
-                hash = fnv1a(quote!(#ty).to_string().as_bytes(), hash);
-            }
-        }
-        syn::Fields::Unnamed(unnamed) => {
-            for (i, field) in unnamed.unnamed.iter().enumerate() {
-                let ty = &field.ty;
-                hash = fnv1a(i.to_string().as_bytes(), hash);
-                hash = fnv1a(quote!(#ty).to_string().as_bytes(), hash);
-            }
-        }
-        syn::Fields::Unit => {}
-    }
-
-    // Clear sign bit to guarantee a positive i32; substitute 0 → 1.
-    let v = (hash >> 1).cast_signed();
-    if v == 0 { 1 } else { v }
-}
-
-pub(crate) fn derive(input: &DeriveInput) -> TokenStream {
-    let syn::Data::Struct(ref data) = input.data else {
-        return syn::Error::new(
-            input.ident.span(),
-            "#[derive(Integrable)] is only supported on structs",
-        )
-        .to_compile_error();
-    };
-
-    let integrable_trait = INTEGRABLE_TRAIT_PATH.to_path();
-    let hashable_trait = crate::utils::HASHABLE_TRAIT_PATH.to_path();
-    let ident = &input.ident;
-
-    let mut generics = input.generics.clone();
-    for type_param in generics.type_params_mut() {
-        type_param.bounds.push(syn::parse_quote!(#hashable_trait));
-    }
-    let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
-
-    let attr = match IntegrableAttr::from_attrs(&input.attrs, input.ident.span()) {
-        Ok(a) => a,
-        Err(e) => return e.to_compile_error(),
-    };
-
-    let kind = attr.kind;
-    let version = compute_version(&data.fields);
-
-    quote! {
-        #[automatically_derived]
-        impl #impl_generics #integrable_trait for #ident #ty_generics #where_clause {
-            const KIND: &'static str = #kind;
-            const VERSION: i32 = #version;
-        }
-    }
-}

server/crates/arbiter-macros/src/lib.rs

@@ -1,7 +1,6 @@
 use syn::{DeriveInput, parse_macro_input};
 
 mod hashable;
-mod integrable;
 mod utils;
 
 #[proc_macro_derive(Hashable)]
@@ -9,9 +8,3 @@ pub fn derive_hashable(input: proc_macro::TokenStream) -> proc_macro::TokenStrea
     let input = parse_macro_input!(input as DeriveInput);
     hashable::derive(&input).into()
 }
-
-#[proc_macro_derive(Integrable, attributes(integrable))]
-pub fn derive_integrable(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
-    let input = parse_macro_input!(input as DeriveInput);
-    integrable::derive(&input).into()
-}

server/crates/arbiter-macros/src/utils.rs

@@ -22,14 +22,3 @@ macro_rules! ensure_path {
 
 ensure_path!(::arbiter_crypto::hashing::Hashable as HASHABLE_TRAIT_PATH);
 ensure_path!(::arbiter_crypto::hashing::Digest as HMAC_DIGEST_PATH);
-ensure_path!(::arbiter_crypto::integrity::Integrable as INTEGRABLE_TRAIT_PATH);
-
-/// Returns named struct fields sorted alphabetically by name.
-/// Both `Hashable` and `Integrable` derive macros must iterate fields in the
-/// same deterministic order so that source-level reordering never changes
-/// either the runtime hash or the compile-time VERSION.
-pub(crate) fn sorted_named_fields(fields: &syn::FieldsNamed) -> Vec<&syn::Field> {
-    let mut v: Vec<&syn::Field> = fields.named.iter().collect();
-    v.sort_by_key(|f| f.ident.as_ref().unwrap().to_string());
-    v
-}

server/crates/arbiter-macros/tests/integrable.rs

@@ -1,53 +0,0 @@
-use arbiter_crypto::integrity::Integrable;
-
-#[derive(arbiter_macros::Hashable, arbiter_macros::Integrable)]
-#[integrable(kind = "test_entity")]
-struct TestEntity {
-    value: i32,
-}
-
-#[derive(arbiter_macros::Hashable, arbiter_macros::Integrable)]
-#[integrable(kind = "other_entity")]
-struct OtherEntity {
-    label: String,
-    count: u64,
-}
-
-#[test]
-fn kind_is_set_correctly() {
-    assert_eq!(<TestEntity as Integrable>::KIND, "test_entity");
-    assert_eq!(<OtherEntity as Integrable>::KIND, "other_entity");
-}
-
-#[test]
-fn version_is_positive() {
-    const {
-        assert!(<TestEntity as Integrable>::VERSION > 0);
-        assert!(<OtherEntity as Integrable>::VERSION > 0);
-    }
-}
-
-#[test]
-fn different_field_layouts_produce_different_versions() {
-    assert_ne!(
-        <TestEntity as Integrable>::VERSION,
-        <OtherEntity as Integrable>::VERSION,
-    );
-}
-
-#[derive(arbiter_macros::Hashable, arbiter_macros::Integrable)]
-#[integrable(kind = "generic_entity")]
-struct GenericEntity<T> {
-    inner: T,
-}
-
-#[test]
-fn generic_struct_derives_integrable() {
-    assert_eq!(
-        <GenericEntity<TestEntity> as Integrable>::KIND,
-        "generic_entity"
-    );
-    const {
-        assert!(<GenericEntity<TestEntity> as Integrable>::VERSION > 0);
-    }
-}

server/crates/arbiter-macros/tests/integrable_errors.rs

@@ -1,5 +0,0 @@
-#[test]
-fn integrable_compile_fail() {
-    let t = trybuild::TestCases::new();
-    t.compile_fail("tests/ui/integrable/*.rs");
-}

server/crates/arbiter-macros/tests/ui/integrable/duplicate_attr.rs

@@ -1,8 +0,0 @@
-#[derive(arbiter_macros::Hashable, arbiter_macros::Integrable)]
-#[integrable(kind = "entity_a")]
-#[integrable(kind = "entity_b")]
-struct DuplicateAttr {
-    value: i32,
-}
-
-fn main() {}

server/crates/arbiter-macros/tests/ui/integrable/duplicate_attr.stderr

@@ -1,5 +0,0 @@
-error: duplicate #[integrable] attribute
- --> tests/ui/integrable/duplicate_attr.rs:3:1
-  |
-3 | #[integrable(kind = "entity_b")]
-  | ^

server/crates/arbiter-macros/tests/ui/integrable/empty_kind.rs

@@ -1,7 +0,0 @@
-#[derive(arbiter_macros::Hashable, arbiter_macros::Integrable)]
-#[integrable(kind = "")]
-struct EmptyKind {
-    value: i32,
-}
-
-fn main() {}

server/crates/arbiter-macros/tests/ui/integrable/empty_kind.stderr

@@ -1,5 +0,0 @@
-error: kind must not be empty
- --> tests/ui/integrable/empty_kind.rs:2:21
-  |
-2 | #[integrable(kind = "")]
-  |                     ^^

server/crates/arbiter-macros/tests/ui/integrable/enum_not_supported.rs

@@ -1,8 +0,0 @@
-#[derive(arbiter_macros::Integrable)]
-#[integrable(kind = "my_enum")]
-enum MyEnum {
-    A,
-    B,
-}
-
-fn main() {}

server/crates/arbiter-macros/tests/ui/integrable/enum_not_supported.stderr

@@ -1,5 +0,0 @@
-error: #[derive(Integrable)] is only supported on structs
- --> tests/ui/integrable/enum_not_supported.rs:3:6
-  |
-3 | enum MyEnum {
-  |      ^^^^^^

server/crates/arbiter-macros/tests/ui/integrable/invalid_kind.rs

@@ -1,7 +0,0 @@
-#[derive(arbiter_macros::Hashable, arbiter_macros::Integrable)]
-#[integrable(kind = "bad kind!")]
-struct InvalidKind {
-    value: i32,
-}
-
-fn main() {}

server/crates/arbiter-macros/tests/ui/integrable/invalid_kind.stderr

@@ -1,5 +0,0 @@
-error: kind must be a valid schema name: start with a letter, contain only [a-zA-Z0-9_]
- --> tests/ui/integrable/invalid_kind.rs:2:21
-  |
-2 | #[integrable(kind = "bad kind!")]
-  |                     ^^^^^^^^^^^

server/crates/arbiter-macros/tests/ui/integrable/missing_attr.rs

@@ -1,6 +0,0 @@
-#[derive(arbiter_macros::Hashable, arbiter_macros::Integrable)]
-struct MissingAttr {
-    value: i32,
-}
-
-fn main() {}

server/crates/arbiter-macros/tests/ui/integrable/missing_attr.stderr

@@ -1,5 +0,0 @@
-error: #[integrable(kind = "...")] is required
- --> tests/ui/integrable/missing_attr.rs:2:8
-  |
-2 | struct MissingAttr {
-  |        ^^^^^^^^^^^

server/crates/arbiter-proto/src/lib.rs

@@ -23,6 +23,10 @@ pub mod proto {
             tonic::include_proto!("arbiter.operator.evm");
         }
 
+        pub mod governance {
+            tonic::include_proto!("arbiter.operator.governance");
+        }
+
         pub mod sdk_client {
             tonic::include_proto!("arbiter.operator.sdk_client");
         }
@@ -34,6 +38,10 @@ pub mod proto {
                 tonic::include_proto!("arbiter.operator.vault.bootstrap");
             }
 
+            pub mod rekey {
+                tonic::include_proto!("arbiter.operator.vault.rekey");
+            }
+
             pub mod unseal {
                 tonic::include_proto!("arbiter.operator.vault.unseal");
             }

server/crates/arbiter-server/Cargo.toml

@@ -37,11 +37,12 @@ kameo.workspace = true
 chacha20poly1305 = { version = "0.10.1", features = ["std"] }
 argon2 = { version = "0.5.3", features = ["zeroize"] }
 restructed = "0.2.2"
-strum = { version = "0.28.0", features = ["derive"] }
+strum.workspace = true
 pem = "3.0.6"
 sha2.workspace = true
 hmac.workspace = true
 alloy.workspace = true
+prost.workspace = true
 prost-types.workspace = true
 arbiter-tokens-registry.path = "../arbiter-tokens-registry"
 anyhow = "1.0.102"
@@ -50,6 +51,8 @@ subtle = "2.6.1"
 x25519-dalek.workspace = true
 k256.workspace = true
 kameo_actors.workspace = true
+vsss-rs = "5.4.0"
+rand_core = "0.6"
 
 [dev-dependencies]
 proptest = "1.11.0"

server/crates/arbiter-server/migrations/2026-02-14-171124-0000_init/up.sql

@@ -43,13 +43,25 @@ create table if not exists arbiter_settings (
 insert into arbiter_settings (id) values (1) on conflict do nothing;
 -- ensure singleton row exists
 
-create table if not exists operator_client (
+create table if not exists operator_identity (
     id integer not null primary key,
     public_key blob not null,
     created_at integer not null default(unixepoch ('now')),
     updated_at integer not null default(unixepoch ('now'))
 ) STRICT;
-create unique index if not exists uniq_operator_client_public_key on operator_client (public_key);
+create unique index if not exists uniq_operator_identity_public_key on operator_identity (public_key);
+
+create table if not exists operator (
+    id integer primary key references operator_identity(id) on delete restrict, -- same id as operator_identity
+
+    share blob not null,
+    share_nonce blob not null,
+    share_salt blob not null,
+
+    created_at integer not null default(unixepoch ('now')),
+    updated_at integer not null default(unixepoch ('now'))
+
+) STRICT;
 
 create table if not exists client_metadata (
     id integer not null primary key,
@@ -204,3 +216,73 @@ create table if not exists integrity_envelope (
 ) STRICT;
 
 create unique index if not exists uniq_integrity_envelope_entity on integrity_envelope (entity_kind, entity_id);
+
+create table if not exists proposal (
+    id           integer not null primary key,
+    kind         text    not null,
+    payload      blob    not null,
+    initiator_id integer not null references operator_identity(id) on delete restrict,
+    created_at   integer not null default(unixepoch('now')),
+    expires_at   integer not null,
+    status       text    not null default 'pending'
+        check (status in ('pending', 'approved', 'rejected'))
+) STRICT;
+
+create table if not exists proposal_vote (
+    id          integer not null primary key,
+    proposal_id integer not null references proposal(id) on delete cascade,
+    operator_id integer not null references operator_identity(id) on delete restrict,
+    approve     integer not null check (approve in (0, 1)),
+    signature   blob    not null,
+    voted_at    integer not null default(unixepoch('now')),
+    unique (proposal_id, operator_id)
+) STRICT;
+
+
+create table if not exists proposal_result (
+    proposal_id integer not null primary key references proposal(id) on delete cascade,
+    data        blob    not null,
+    created_at  integer not null default(unixepoch('now'))
+) STRICT;
+
+-- ===============================
+-- Recovery Operators (§3.4/§3.5/§3.6)
+-- ===============================
+
+-- Encrypted Shamir shares for recovery operators (mirrors the `operator` table).
+create table if not exists recovery_operator (
+    id          integer not null primary key references recovery_operator_identity(id) on delete restrict,
+    share       blob    not null,
+    share_nonce blob    not null,
+    share_salt  blob    not null,
+    created_at  integer not null default(unixepoch('now')),
+    updated_at  integer not null default(unixepoch('now'))
+) STRICT;
+
+create table if not exists recovery_operator_identity (
+    id         integer not null primary key,
+    public_key blob    not null unique,
+    created_at integer not null default(unixepoch('now')),
+    updated_at integer not null default(unixepoch('now'))
+) STRICT;
+
+-- One active wakeup request at a time. A request is pending when cancelled_at IS NULL
+-- and requested_at + 14 days > now. It becomes active (recovery live) after 14 days.
+create table if not exists recovery_wakeup_request (
+    id           integer not null primary key,
+    requested_by integer not null references operator_identity(id) on delete restrict,
+    requested_at integer not null default(unixepoch('now')),
+    cancelled_by integer references operator_identity(id) on delete restrict,
+    cancelled_at integer
+) STRICT;
+
+-- Votes cast by recovery operators; only allowed on replace_operator proposals.
+create table if not exists recovery_proposal_vote (
+    id                   integer not null primary key,
+    proposal_id          integer not null references proposal(id) on delete cascade,
+    recovery_operator_id integer not null references recovery_operator_identity(id) on delete restrict,
+    approve              integer not null check (approve in (0, 1)),
+    signature            blob    not null,
+    voted_at             integer not null default(unixepoch('now')),
+    unique (proposal_id, recovery_operator_id)
+) STRICT;

server/crates/arbiter-server/src/actors/bootstrap.rs

@@ -48,7 +48,7 @@ impl Bootstrapper {
         let row_count: i64 = {
             let mut conn = db.get().await?;
 
-            schema::operator_client::table
+            schema::operator::table
                 .count()
                 .get_result(&mut conn)
                 .await?

server/crates/arbiter-server/src/actors/evm/mod.rs

@@ -3,7 +3,7 @@ use crate::{
     crypto::integrity,
     db::{
         DatabaseError, DatabasePool,
-        models::{self},
+        models::{self, EvmWalletId},
         schema,
     },
     evm::{
@@ -116,7 +116,7 @@ impl EvmActor {
     }
 
     #[message]
-    pub async fn list_wallets(&self) -> Result<Vec<(i32, Address)>, Error> {
+    pub async fn list_wallets(&self) -> Result<Vec<(EvmWalletId, Address)>, Error> {
         let mut conn = self.db.get().await.map_err(DatabaseError::from)?;
         let rows: Vec<models::EvmWallet> = schema::evm_wallet::table
             .select(models::EvmWallet::as_select())
@@ -160,14 +160,23 @@ impl EvmActor {
     }
 
     #[message]
-    pub async fn useragent_delete_grant(
-        &mut self,
-        grant_id: i32,
-    ) -> Result<(), Error> {
-        self.engine
-            .revoke_grant(grant_id)
+    pub async fn operator_delete_grant(&mut self, grant_id: i32) -> Result<(), Error> {
+        let mut conn = self.db.get().await.map_err(DatabaseError::from)?;
+
+        let affected = diesel::update(schema::evm_basic_grant::table)
+            .filter(schema::evm_basic_grant::id.eq(grant_id))
+            .set(schema::evm_basic_grant::revoked_at.eq(models::SqliteTimestamp::now()))
+            .execute(&mut conn)
             .await
-            .map_err(Error::from)
+            .map_err(DatabaseError::from)?;
+
+        if affected == 0 {
+            return Err(Error::Database(DatabaseError::from(
+                diesel::result::Error::NotFound,
+            )));
+        }
+
+        Ok(())
     }
 
     #[message]

server/crates/arbiter-server/src/actors/flow_coordinator/client_connect_approval.rs

@@ -11,9 +11,7 @@ use kameo::{
     prelude::{ActorId, ActorRef, ActorStopReason, Context, WeakActorRef},
     reply::ReplySender,
 };
-use std::{ops::ControlFlow, time::Duration};
-
-const APPROVAL_TIMEOUT: Duration = Duration::from_secs(30);
+use std::ops::ControlFlow;
 
 pub struct Args {
     pub client: ClientProfile,
@@ -66,14 +64,6 @@ impl Actor for ClientApprovalController {
                 .await;
         }
 
-        let weak = actor_ref.downgrade();
-        tokio::spawn(async move {
-            tokio::time::sleep(APPROVAL_TIMEOUT).await;
-            if let Some(r) = weak.upgrade() {
-                let _ = r.tell(OnApprovalTimeout {}).await;
-            }
-        });
-
         Ok(this)
     }
 
@@ -114,14 +104,4 @@ impl ClientApprovalController {
             ctx.stop();
         }
     }
-
-    /// Fired after `APPROVAL_TIMEOUT` elapses. Any operator that hasn't responded
-    /// by then is treated as a denial to prevent zombie sessions from blocking the flow.
-    #[message(ctx)]
-    pub fn on_approval_timeout(&mut self, ctx: &mut Context<Self, ()>) {
-        if self.pending > 0 {
-            self.send_reply(Ok(false));
-            ctx.stop();
-        }
-    }
 }

server/crates/arbiter-server/src/actors/mod.rs

@@ -1,7 +1,8 @@
 use crate::{
     actors::{
         bootstrap::Bootstrapper, evm::EvmActor, flow_coordinator::FlowCoordinator,
-        operator_registry::OperatorRegistry, vault::Vault,
+        operator_registry::OperatorRegistry, proposal_manager::ProposalManager, vault::Vault,
+        vault_coordinator::VaultCoordinator,
     },
     db,
 };
@@ -14,7 +15,9 @@ pub mod bootstrap;
 pub mod evm;
 pub mod flow_coordinator;
 pub mod operator_registry;
+pub mod proposal_manager;
 pub mod vault;
+pub mod vault_coordinator;
 
 #[derive(Error, Debug)]
 pub enum SpawnError {
@@ -30,9 +33,11 @@ pub enum SpawnError {
 pub struct GlobalActors {
     pub vault: ActorRef<Vault>,
     pub bootstrapper: ActorRef<Bootstrapper>,
+    pub vault_coordinator: ActorRef<VaultCoordinator>,
     pub flow_coordinator: ActorRef<FlowCoordinator>,
     pub operator_registry: ActorRef<OperatorRegistry>,
     pub evm: ActorRef<EvmActor>,
+    pub proposal_manager: ActorRef<ProposalManager>,
     pub events: ActorRef<MessageBus>,
 }
 
@@ -45,15 +50,27 @@ impl GlobalActors {
         let message_bus = Self::spawn_message_bus();
         let key_holder = Vault::spawn(Vault::new(db.clone(), message_bus.clone()).await?);
         let operator_registry = OperatorRegistry::spawn(OperatorRegistry::default());
+        let evm = EvmActor::spawn(EvmActor::new(key_holder.clone(), db.clone()));
+        let vault_coordinator = VaultCoordinator::spawn(VaultCoordinator::new(
+            db.clone(),
+            key_holder.clone(),
+        ));
         Ok(Self {
             bootstrapper: Bootstrapper::spawn(Bootstrapper::new(&db).await?),
-            evm: EvmActor::spawn(EvmActor::new(key_holder.clone(), db)),
+            proposal_manager: ProposalManager::spawn(ProposalManager::new(
+                db,
+                key_holder.clone(),
+                evm.clone(),
+                vault_coordinator.clone(),
+            )),
             vault: key_holder,
+            vault_coordinator,
             flow_coordinator: FlowCoordinator::spawn(FlowCoordinator::new(
                 operator_registry.clone(),
             )),
             operator_registry,
             events: message_bus,
+            evm,
         })
     }
 }

server/crates/arbiter-server/src/actors/proposal_manager.rs

@@ -0,0 +1,978 @@
+use crate::{
+    actors::{
+        evm::EvmActor,
+        vault::Vault,
+        vault_coordinator::{StartRekey, VaultCoordinator},
+    },
+    db::{
+        self,
+        models::{
+            NewProposal, NewProposalVote, NewRecoveryProposalVote, NewRecoveryWakeupRequest,
+            Proposal, ProposalStatus, SqliteTimestamp,
+        },
+        schema,
+    },
+};
+use chrono::Utc;
+use diesel::{ExpressionMethods as _, QueryDsl};
+use diesel_async::RunQueryDsl;
+use kameo::{Actor, actor::ActorRef, messages};
+use strum::{Display, EnumString, IntoStaticStr};
+use tracing::{error, warn};
+
+pub const DEFAULT_TTL_SECS: i64 = 7 * 24 * 60 * 60; // 7 days
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Display, EnumString, IntoStaticStr)]
+#[strum(serialize_all = "snake_case")]
+pub enum ProposalKindTag {
+    ApproveSdkClient,
+    GrantWalletAccess,
+    ApproveServerUpdate,
+    ReplaceOperator,
+    UpdateShamirParameters,
+    ApprovePersistentGrant,
+    ApproveOneOffTransaction,
+}
+
+#[derive(Debug, Clone)]
+pub enum ProposalKind {
+    ApproveSdkClient {
+        client_id: i32,
+    },
+    GrantWalletAccess {
+        wallet_id: i32,
+        client_id: i32,
+    },
+    ApproveServerUpdate,
+    ReplaceOperator {
+        old_operator_id: i32,
+        new_pubkey: Vec<u8>,
+    },
+    UpdateShamirParameters {
+        new_n: u8,
+    },
+    ApprovePersistentGrant {
+        payload_bytes: Vec<u8>,
+    },
+    ApproveOneOffTransaction {
+        payload_bytes: Vec<u8>,
+    },
+}
+
+impl ProposalKind {
+    pub const fn tag(&self) -> ProposalKindTag {
+        match self {
+            Self::ApproveSdkClient { .. } => ProposalKindTag::ApproveSdkClient,
+            Self::GrantWalletAccess { .. } => ProposalKindTag::GrantWalletAccess,
+            Self::ApproveServerUpdate => ProposalKindTag::ApproveServerUpdate,
+            Self::ReplaceOperator { .. } => ProposalKindTag::ReplaceOperator,
+            Self::UpdateShamirParameters { .. } => ProposalKindTag::UpdateShamirParameters,
+            Self::ApprovePersistentGrant { .. } => ProposalKindTag::ApprovePersistentGrant,
+            Self::ApproveOneOffTransaction { .. } => ProposalKindTag::ApproveOneOffTransaction,
+        }
+    }
+
+    pub fn kind_str(&self) -> &'static str {
+        self.tag().into()
+    }
+
+    pub fn encode_payload(&self) -> Vec<u8> {
+        match self {
+            Self::ApproveSdkClient { client_id } => client_id.to_be_bytes().to_vec(),
+            Self::GrantWalletAccess {
+                wallet_id,
+                client_id,
+            } => {
+                let mut buf = Vec::with_capacity(8);
+                buf.extend_from_slice(&wallet_id.to_be_bytes());
+                buf.extend_from_slice(&client_id.to_be_bytes());
+                buf
+            }
+            Self::ApproveServerUpdate => vec![],
+            Self::ReplaceOperator {
+                old_operator_id,
+                new_pubkey,
+            } => {
+                let len = u32::try_from(new_pubkey.len()).expect("pubkey len fits in u32");
+                let mut buf = Vec::with_capacity(4 + 4 + new_pubkey.len());
+                buf.extend_from_slice(&old_operator_id.to_be_bytes());
+                buf.extend_from_slice(&len.to_be_bytes());
+                buf.extend_from_slice(new_pubkey);
+                buf
+            }
+            Self::UpdateShamirParameters { new_n } => vec![*new_n],
+            Self::ApprovePersistentGrant { payload_bytes }
+            | Self::ApproveOneOffTransaction { payload_bytes } => payload_bytes.clone(),
+        }
+    }
+
+    /// Key-rotation proposals require every operator to approve (§3.3).
+    #[must_use]
+    pub fn requires_full_quorum(kind: &str) -> bool {
+        matches!(
+            kind.parse::<ProposalKindTag>(),
+            Ok(ProposalKindTag::ReplaceOperator | ProposalKindTag::UpdateShamirParameters)
+        )
+    }
+
+    pub fn decode(kind: &str, payload: &[u8]) -> Result<Self, String> {
+        let tag = kind
+            .parse::<ProposalKindTag>()
+            .map_err(|_| format!("unknown proposal kind: {kind}"))?;
+        match tag {
+            ProposalKindTag::ApproveSdkClient => {
+                let bytes = <[u8; 4]>::try_from(payload)
+                    .map_err(|_| "invalid payload for approve_sdk_client".to_owned())?;
+                Ok(Self::ApproveSdkClient {
+                    client_id: i32::from_be_bytes(bytes),
+                })
+            }
+            ProposalKindTag::GrantWalletAccess => {
+                let bytes = <[u8; 8]>::try_from(payload)
+                    .map_err(|_| "invalid payload for grant_wallet_access".to_owned())?;
+                Ok(Self::GrantWalletAccess {
+                    wallet_id: i32::from_be_bytes(bytes[..4].try_into().unwrap()),
+                    client_id: i32::from_be_bytes(bytes[4..].try_into().unwrap()),
+                })
+            }
+            ProposalKindTag::ApproveServerUpdate => Ok(Self::ApproveServerUpdate),
+            ProposalKindTag::ReplaceOperator => {
+                let (id_bytes, rest) = payload
+                    .split_first_chunk::<4>()
+                    .ok_or_else(|| "replace_operator payload too short".to_owned())?;
+                let old_operator_id = i32::from_be_bytes(*id_bytes);
+                let (len_bytes, rest) = rest
+                    .split_first_chunk::<4>()
+                    .ok_or_else(|| "replace_operator payload too short".to_owned())?;
+                let len = u32::from_be_bytes(*len_bytes);
+                let len = usize::try_from(len).unwrap_or(usize::MAX);
+                let new_pubkey = rest
+                    .get(..len)
+                    .ok_or_else(|| "replace_operator payload truncated".to_owned())?
+                    .to_vec();
+                Ok(Self::ReplaceOperator {
+                    old_operator_id,
+                    new_pubkey,
+                })
+            }
+            ProposalKindTag::UpdateShamirParameters => {
+                let &[new_n] = payload else {
+                    return Err("invalid payload for update_shamir_parameters".to_owned());
+                };
+                Ok(Self::UpdateShamirParameters { new_n })
+            }
+            ProposalKindTag::ApprovePersistentGrant => Ok(Self::ApprovePersistentGrant {
+                payload_bytes: payload.to_vec(),
+            }),
+            ProposalKindTag::ApproveOneOffTransaction => Ok(Self::ApproveOneOffTransaction {
+                payload_bytes: payload.to_vec(),
+            }),
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum VoteOutcome {
+    Pending,
+    QuorumApproved,
+    QuorumRejected,
+}
+
+#[derive(Debug, thiserror::Error)]
+pub enum Error {
+    #[error("Proposal not found")]
+    ProposalNotFound,
+    #[error("Proposal is not pending")]
+    ProposalNotPending,
+    #[error("Proposal has expired")]
+    ProposalExpired,
+    #[error("Operator already voted on this proposal")]
+    AlreadyVoted,
+    #[error("Invalid vote signature")]
+    InvalidSignature,
+    #[error("Operator not found")]
+    OperatorNotFound,
+    #[error("Database connection error: {0}")]
+    DatabaseConnection(#[from] db::PoolError),
+    #[error("Database query error: {0}")]
+    DatabaseQuery(#[from] diesel::result::Error),
+    #[error("Execution failed: {0}")]
+    ExecutionFailed(String),
+    #[error("Recovery operators are sleeping")]
+    RecoveryNotActive,
+    #[error("Recovery operators may only vote on operator replacement")]
+    NotAllowedForRecoveryOperator,
+    #[error("A recovery wake-up is already pending or active")]
+    WakeupAlreadyPending,
+    #[error("No active recovery wake-up to cancel")]
+    NoActiveWakeup,
+}
+
+#[derive(Debug)]
+pub struct ProposalSummary {
+    pub id: i32,
+    pub kind: String,
+    pub initiator_id: i32,
+    pub expires_at: SqliteTimestamp,
+    pub approve_count: i64,
+    pub reject_count: i64,
+}
+
+#[derive(Actor)]
+pub struct ProposalManager {
+    pub(crate) db: db::DatabasePool,
+    pub(crate) vault: ActorRef<Vault>,
+    pub(crate) evm: ActorRef<EvmActor>,
+    pub(crate) vault_coordinator: ActorRef<VaultCoordinator>,
+}
+
+impl ProposalManager {
+    pub const fn new(
+        db: db::DatabasePool,
+        vault: ActorRef<Vault>,
+        evm: ActorRef<EvmActor>,
+        vault_coordinator: ActorRef<VaultCoordinator>,
+    ) -> Self {
+        Self {
+            db,
+            vault,
+            evm,
+            vault_coordinator,
+        }
+    }
+}
+
+#[messages]
+impl ProposalManager {
+    #[message]
+    pub async fn create_proposal(
+        &mut self,
+        kind: ProposalKind,
+        initiator_id: i32,
+        ttl_secs: Option<i64>,
+    ) -> Result<i32, Error> {
+        let ttl = ttl_secs.unwrap_or(DEFAULT_TTL_SECS);
+        let expires_at = SqliteTimestamp::from(Utc::now() + chrono::Duration::seconds(ttl));
+
+        let new_proposal = NewProposal {
+            kind: kind.kind_str().to_owned(),
+            payload: kind.encode_payload(),
+            initiator_id,
+            expires_at,
+        };
+
+        let mut conn = self.db.get().await?;
+        let id: i32 = diesel::insert_into(schema::proposal::table)
+            .values(&new_proposal)
+            .returning(schema::proposal::id)
+            .get_result(&mut conn)
+            .await?;
+
+        Ok(id)
+    }
+
+    #[message]
+    pub async fn query_pending(&mut self, operator_id: i32) -> Vec<ProposalSummary> {
+        #[expect(
+            clippy::cast_possible_truncation,
+            clippy::as_conversions,
+            reason = "fixme! #84; this will break in 2038"
+        )]
+        let now_ts = Utc::now().timestamp() as i32;
+
+        let Ok(mut conn) = self.db.get().await else {
+            warn!("query_pending: failed to acquire DB connection");
+            return vec![];
+        };
+
+        let voted_ids: Vec<i32> = schema::proposal_vote::table
+            .filter(schema::proposal_vote::operator_id.eq(operator_id))
+            .select(schema::proposal_vote::proposal_id)
+            .load(&mut conn)
+            .await
+            .unwrap_or_default();
+
+        let proposals: Vec<Proposal> = schema::proposal::table
+            .filter(schema::proposal::status.eq(ProposalStatus::Pending))
+            .filter(schema::proposal::expires_at.gt(now_ts))
+            .filter(diesel::dsl::not(schema::proposal::id.eq_any(&voted_ids)))
+            .load(&mut conn)
+            .await
+            .unwrap_or_default();
+
+        let mut summaries = Vec::with_capacity(proposals.len());
+        for p in proposals {
+            let approve_count: i64 = schema::proposal_vote::table
+                .filter(schema::proposal_vote::proposal_id.eq(p.id))
+                .filter(schema::proposal_vote::approve.eq(true))
+                .count()
+                .get_result(&mut conn)
+                .await
+                .unwrap_or(0);
+            let reject_count: i64 = schema::proposal_vote::table
+                .filter(schema::proposal_vote::proposal_id.eq(p.id))
+                .filter(schema::proposal_vote::approve.eq(false))
+                .count()
+                .get_result(&mut conn)
+                .await
+                .unwrap_or(0);
+            summaries.push(ProposalSummary {
+                id: p.id,
+                kind: p.kind,
+                initiator_id: p.initiator_id,
+                expires_at: p.expires_at,
+                approve_count,
+                reject_count,
+            });
+        }
+        summaries
+    }
+
+    #[message]
+    pub async fn cast_vote(
+        &mut self,
+        proposal_id: i32,
+        operator_id: i32,
+        approve: bool,
+        signature: Vec<u8>,
+    ) -> Result<VoteOutcome, Error> {
+        use arbiter_crypto::authn::{self, SigningContext};
+
+        let mut conn = self.db.get().await?;
+
+        // Load proposal — must exist
+        let proposal: Proposal = schema::proposal::table
+            .find(proposal_id)
+            .first(&mut conn)
+            .await
+            .map_err(|e| match e {
+                diesel::result::Error::NotFound => Error::ProposalNotFound,
+                other => Error::DatabaseQuery(other),
+            })?;
+
+        // Check for duplicate vote before status check so AlreadyVoted takes priority
+        let existing: i64 = schema::proposal_vote::table
+            .filter(schema::proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::proposal_vote::operator_id.eq(operator_id))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        if existing > 0 {
+            return Err(Error::AlreadyVoted);
+        }
+
+        if proposal.status != ProposalStatus::Pending {
+            return Err(Error::ProposalNotPending);
+        }
+
+        if proposal.expires_at.0 <= Utc::now() {
+            return Err(Error::ProposalExpired);
+        }
+
+        // Load operator public key from operator_identity
+        let pubkey_bytes: Vec<u8> = schema::operator_identity::table
+            .find(operator_id)
+            .select(schema::operator_identity::public_key)
+            .first(&mut conn)
+            .await
+            .map_err(|e| match e {
+                diesel::result::Error::NotFound => Error::OperatorNotFound,
+                other => Error::DatabaseQuery(other),
+            })?;
+
+        let pubkey = authn::PublicKey::try_from(pubkey_bytes.as_slice())
+            .map_err(|()| Error::InvalidSignature)?;
+
+        // Canonical vote message: proposal_id (i64 big-endian) || approve (u8)
+        let mut vote_msg = Vec::with_capacity(9);
+        vote_msg.extend_from_slice(&i64::from(proposal_id).to_be_bytes());
+        vote_msg.push(u8::from(approve));
+
+        let auth_sig = authn::Signature::try_from(signature.as_slice())
+            .map_err(|()| Error::InvalidSignature)?;
+
+        if !pubkey.verify_message(&vote_msg, SigningContext::GovernanceVote, &auth_sig) {
+            return Err(Error::InvalidSignature);
+        }
+
+        // Insert vote
+        diesel::insert_into(schema::proposal_vote::table)
+            .values(&NewProposalVote {
+                proposal_id,
+                operator_id,
+                approve,
+                signature,
+            })
+            .execute(&mut conn)
+            .await?;
+
+        // Quorum check
+        let total_operators: i64 = schema::operator_identity::table
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        let recovery_active = Self::is_recovery_active_conn(&mut conn).await?;
+        let total_recovery: i64 = if recovery_active {
+            schema::recovery_operator_identity::table
+                .count()
+                .get_result(&mut conn)
+                .await?
+        } else {
+            0
+        };
+        #[expect(
+            clippy::cast_possible_truncation,
+            clippy::cast_sign_loss,
+            clippy::as_conversions,
+            reason = "operator count is always a small positive integer"
+        )]
+        let threshold = if ProposalKind::requires_full_quorum(&proposal.kind) {
+            // §3.3: key-rotation proposals require every eligible voter to approve
+            // §3.5: when recovery is active, recovery operators also vote on replace_operator
+            (total_operators + total_recovery) as usize
+        } else {
+            crate::crypto::shamir::shamir_threshold(total_operators as usize)
+        };
+
+        let ordinary_approve: i64 = schema::proposal_vote::table
+            .filter(schema::proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::proposal_vote::approve.eq(true))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        let recovery_approve: i64 = schema::recovery_proposal_vote::table
+            .filter(schema::recovery_proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::recovery_proposal_vote::approve.eq(true))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        let approve_count = ordinary_approve + recovery_approve;
+
+        let ordinary_reject: i64 = schema::proposal_vote::table
+            .filter(schema::proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::proposal_vote::approve.eq(false))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        let recovery_reject: i64 = schema::recovery_proposal_vote::table
+            .filter(schema::recovery_proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::recovery_proposal_vote::approve.eq(false))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        let reject_count = ordinary_reject + recovery_reject;
+
+        #[expect(
+            clippy::cast_possible_wrap,
+            clippy::as_conversions,
+            reason = "threshold is derived from operator count, always fits i64"
+        )]
+        let threshold_i64 = threshold as i64;
+
+        if approve_count >= threshold_i64 {
+            diesel::update(schema::proposal::table.find(proposal_id))
+                .set(schema::proposal::status.eq(ProposalStatus::Approved))
+                .execute(&mut conn)
+                .await?;
+            drop(conn); // release connection before async execution
+            self.execute_proposal(&proposal).await?;
+            return Ok(VoteOutcome::QuorumApproved);
+        }
+
+        let total_eligible = total_operators + total_recovery;
+        if reject_count > total_eligible - threshold_i64 {
+            diesel::update(schema::proposal::table.find(proposal_id))
+                .set(schema::proposal::status.eq(ProposalStatus::Rejected))
+                .execute(&mut conn)
+                .await?;
+            return Ok(VoteOutcome::QuorumRejected);
+        }
+
+        Ok(VoteOutcome::Pending)
+    }
+
+    /// §3.6: Any ordinary operator may request recovery wake-up.
+    /// Fails if a wake-up is already pending or active.
+    #[message]
+    pub async fn request_recovery_wakeup(&mut self, operator_id: i32) -> Result<(), Error> {
+        let mut conn = self.db.get().await?;
+        if Self::has_uncancelled_wakeup(&mut conn).await? {
+            return Err(Error::WakeupAlreadyPending);
+        }
+        diesel::insert_into(schema::recovery_wakeup_request::table)
+            .values(&NewRecoveryWakeupRequest {
+                requested_by: operator_id,
+            })
+            .execute(&mut conn)
+            .await?;
+        Ok(())
+    }
+
+    /// §3.6: Any ordinary operator may cancel a pending wake-up request.
+    /// Fails if there is no uncancelled request.
+    #[message]
+    pub async fn cancel_recovery_wakeup(&mut self, operator_id: i32) -> Result<(), Error> {
+        let mut conn = self.db.get().await?;
+        let rows_updated = diesel::update(schema::recovery_wakeup_request::table)
+            .filter(schema::recovery_wakeup_request::cancelled_at.is_null())
+            .set((
+                schema::recovery_wakeup_request::cancelled_by.eq(Some(operator_id)),
+                schema::recovery_wakeup_request::cancelled_at.eq(Some(SqliteTimestamp::now())),
+            ))
+            .execute(&mut conn)
+            .await?;
+        if rows_updated == 0 {
+            return Err(Error::NoActiveWakeup);
+        }
+        Ok(())
+    }
+
+    /// §3.5: Recovery operators may only vote on operator replacement proposals.
+    /// §3.6: Voting is gated behind recovery being active (14-day window elapsed).
+    #[message]
+    pub async fn cast_recovery_vote(
+        &mut self,
+        proposal_id: i32,
+        recovery_operator_id: i32,
+        approve: bool,
+        signature: Vec<u8>,
+    ) -> Result<VoteOutcome, Error> {
+        use arbiter_crypto::authn::{self, SigningContext};
+
+        let mut conn = self.db.get().await?;
+
+        let proposal: Proposal = schema::proposal::table
+            .find(proposal_id)
+            .first(&mut conn)
+            .await
+            .map_err(|e| match e {
+                diesel::result::Error::NotFound => Error::ProposalNotFound,
+                other => Error::DatabaseQuery(other),
+            })?;
+
+        if proposal.kind.parse::<ProposalKindTag>() != Ok(ProposalKindTag::ReplaceOperator) {
+            return Err(Error::NotAllowedForRecoveryOperator);
+        }
+
+        if !Self::is_recovery_active_conn(&mut conn).await? {
+            return Err(Error::RecoveryNotActive);
+        }
+
+        let existing: i64 = schema::recovery_proposal_vote::table
+            .filter(schema::recovery_proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::recovery_proposal_vote::recovery_operator_id.eq(recovery_operator_id))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        if existing > 0 {
+            return Err(Error::AlreadyVoted);
+        }
+
+        if proposal.status != ProposalStatus::Pending {
+            return Err(Error::ProposalNotPending);
+        }
+
+        if proposal.expires_at.0 <= Utc::now() {
+            return Err(Error::ProposalExpired);
+        }
+
+        let pubkey_bytes: Vec<u8> = schema::recovery_operator_identity::table
+            .find(recovery_operator_id)
+            .select(schema::recovery_operator_identity::public_key)
+            .first(&mut conn)
+            .await
+            .map_err(|e| match e {
+                diesel::result::Error::NotFound => Error::OperatorNotFound,
+                other => Error::DatabaseQuery(other),
+            })?;
+
+        let pubkey = authn::PublicKey::try_from(pubkey_bytes.as_slice())
+            .map_err(|()| Error::InvalidSignature)?;
+
+        let mut vote_msg = Vec::with_capacity(9);
+        vote_msg.extend_from_slice(&i64::from(proposal_id).to_be_bytes());
+        vote_msg.push(u8::from(approve));
+
+        let auth_sig = authn::Signature::try_from(signature.as_slice())
+            .map_err(|()| Error::InvalidSignature)?;
+
+        if !pubkey.verify_message(&vote_msg, SigningContext::GovernanceVote, &auth_sig) {
+            return Err(Error::InvalidSignature);
+        }
+
+        diesel::insert_into(schema::recovery_proposal_vote::table)
+            .values(&NewRecoveryProposalVote {
+                proposal_id,
+                recovery_operator_id,
+                approve,
+                signature,
+            })
+            .execute(&mut conn)
+            .await?;
+
+        // Quorum: all ordinary + all recovery operators must approve (§3.3 + §3.5)
+        let total_ordinary: i64 = schema::operator_identity::table
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        let total_recovery: i64 = schema::recovery_operator_identity::table
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        let threshold_i64 = total_ordinary + total_recovery;
+
+        let ordinary_approve: i64 = schema::proposal_vote::table
+            .filter(schema::proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::proposal_vote::approve.eq(true))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        let recovery_approve: i64 = schema::recovery_proposal_vote::table
+            .filter(schema::recovery_proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::recovery_proposal_vote::approve.eq(true))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        let approve_count = ordinary_approve + recovery_approve;
+
+        if approve_count >= threshold_i64 {
+            diesel::update(schema::proposal::table.find(proposal_id))
+                .set(schema::proposal::status.eq(ProposalStatus::Approved))
+                .execute(&mut conn)
+                .await?;
+            drop(conn);
+            self.execute_proposal(&proposal).await?;
+            return Ok(VoteOutcome::QuorumApproved);
+        }
+
+        let recovery_reject: i64 = schema::recovery_proposal_vote::table
+            .filter(schema::recovery_proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::recovery_proposal_vote::approve.eq(false))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        let ordinary_reject: i64 = schema::proposal_vote::table
+            .filter(schema::proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::proposal_vote::approve.eq(false))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        let reject_count = ordinary_reject + recovery_reject;
+
+        if reject_count > threshold_i64 - approve_count - reject_count {
+            diesel::update(schema::proposal::table.find(proposal_id))
+                .set(schema::proposal::status.eq(ProposalStatus::Rejected))
+                .execute(&mut conn)
+                .await?;
+            return Ok(VoteOutcome::QuorumRejected);
+        }
+
+        Ok(VoteOutcome::Pending)
+    }
+}
+
+impl ProposalManager {
+    const WAKEUP_DELAY_SECS: i32 = 14 * 24 * 60 * 60;
+
+    /// Returns true when an uncancelled wakeup request has passed the 14-day dispute window.
+    async fn is_recovery_active_conn(conn: &mut db::DatabaseConnection) -> Result<bool, Error> {
+        let count: i64 = schema::recovery_wakeup_request::table
+            .filter(schema::recovery_wakeup_request::cancelled_at.is_null())
+            .filter(
+                schema::recovery_wakeup_request::requested_at.le(diesel::dsl::sql::<
+                    diesel::sql_types::Integer,
+                >(&format!(
+                    "unixepoch('now') - {}",
+                    Self::WAKEUP_DELAY_SECS
+                ))),
+            )
+            .count()
+            .get_result(conn)
+            .await?;
+        Ok(count > 0)
+    }
+
+    /// Returns true when there is any uncancelled wakeup request (pending or active).
+    async fn has_uncancelled_wakeup(conn: &mut db::DatabaseConnection) -> Result<bool, Error> {
+        let count: i64 = schema::recovery_wakeup_request::table
+            .filter(schema::recovery_wakeup_request::cancelled_at.is_null())
+            .count()
+            .get_result(conn)
+            .await?;
+        Ok(count > 0)
+    }
+
+    async fn execute_proposal(&self, proposal: &Proposal) -> Result<(), Error> {
+        let kind = ProposalKind::decode(&proposal.kind, &proposal.payload)
+            .map_err(Error::ExecutionFailed)?;
+        match kind {
+            ProposalKind::ApproveSdkClient { client_id } => {
+                self.execute_approve_sdk_client(client_id).await
+            }
+            ProposalKind::GrantWalletAccess {
+                wallet_id,
+                client_id,
+            } => self.execute_grant_wallet_access(wallet_id, client_id).await,
+            ProposalKind::ApproveServerUpdate => Ok(()),
+            ProposalKind::ReplaceOperator {
+                old_operator_id,
+                new_pubkey,
+            } => {
+                self.execute_replace_operator(old_operator_id, new_pubkey)
+                    .await
+            }
+            ProposalKind::UpdateShamirParameters { new_n } => {
+                self.execute_update_shamir_parameters(new_n).await
+            }
+            ProposalKind::ApprovePersistentGrant { payload_bytes } => {
+                self.execute_approve_persistent_grant(payload_bytes).await
+            }
+            ProposalKind::ApproveOneOffTransaction { payload_bytes } => {
+                self.execute_approve_one_off_transaction(proposal.id, payload_bytes)
+                    .await
+            }
+        }
+    }
+
+    async fn execute_grant_wallet_access(
+        &self,
+        wallet_id: i32,
+        client_id: i32,
+    ) -> Result<(), Error> {
+        use crate::db::models::EvmWalletId;
+
+        let mut conn = self.db.get().await.map_err(Error::DatabaseConnection)?;
+
+        diesel::insert_into(schema::evm_wallet_access::table)
+            .values((
+                schema::evm_wallet_access::wallet_id.eq(EvmWalletId::from_raw(wallet_id)),
+                schema::evm_wallet_access::client_id.eq(client_id),
+            ))
+            .execute(&mut conn)
+            .await
+            .map_err(|e| Error::ExecutionFailed(format!("grant wallet access: {e}")))?;
+
+        Ok(())
+    }
+
+    /// Updates the old operator's public key in-place (preserving their DB id and history),
+    /// removes their old Shamir share, then begins a coordinated re-key (§3.3).
+    async fn execute_replace_operator(
+        &self,
+        old_operator_id: i32,
+        new_pubkey: Vec<u8>,
+    ) -> Result<(), Error> {
+        let mut conn = self.db.get().await.map_err(Error::DatabaseConnection)?;
+
+        diesel::update(schema::operator_identity::table)
+            .filter(schema::operator_identity::id.eq(old_operator_id))
+            .set(schema::operator_identity::public_key.eq(&new_pubkey))
+            .execute(&mut conn)
+            .await
+            .map_err(|e| Error::ExecutionFailed(format!("update operator pubkey: {e}")))?;
+
+        // Remove the old Shamir share; finalize_rekey will store a fresh one.
+        diesel::delete(schema::operator::table)
+            .filter(schema::operator::id.eq(Some(old_operator_id)))
+            .execute(&mut conn)
+            .await
+            .map_err(|e| Error::ExecutionFailed(format!("remove old operator share: {e}")))?;
+
+        drop(conn);
+
+        self.vault_coordinator
+            .ask(StartRekey {})
+            .await
+            .map_err(|e| Error::ExecutionFailed(format!("start rekey: {e}")))?;
+
+        Ok(())
+    }
+
+    /// Triggers a Shamir re-key with the current operator set (§3.3).
+    async fn execute_update_shamir_parameters(&self, _new_n: u8) -> Result<(), Error> {
+        self.vault_coordinator
+            .ask(StartRekey {})
+            .await
+            .map_err(|e| Error::ExecutionFailed(format!("start rekey: {e}")))?;
+        Ok(())
+    }
+
+    async fn execute_approve_one_off_transaction(
+        &self,
+        proposal_id: i32,
+        payload_bytes: Vec<u8>,
+    ) -> Result<(), Error> {
+        use crate::actors::evm::ClientSignTransaction;
+        use crate::db::models::NewProposalResult;
+        use alloy::{
+            consensus::TxEip1559,
+            eips::eip2930::AccessList,
+            primitives::{Address, Bytes, TxKind, U256},
+        };
+        use arbiter_proto::proto::operator::governance::ApproveOneOffTransactionPayload;
+        use prost::Message as _;
+
+        let p = ApproveOneOffTransactionPayload::decode(payload_bytes.as_slice())
+            .map_err(|e| Error::ExecutionFailed(format!("decode one-off tx payload: {e}")))?;
+
+        let wallet_address = Address::from_slice(p.wallet_address.as_slice());
+        let to = Address::from_slice(p.to.as_slice());
+
+        let transaction = TxEip1559 {
+            chain_id: p.chain_id,
+            nonce: p.nonce,
+            gas_limit: p.gas_limit,
+            max_fee_per_gas: u128::from_be_bytes(
+                p.max_fee_per_gas
+                    .as_slice()
+                    .try_into()
+                    .map_err(|_| Error::ExecutionFailed("invalid max_fee_per_gas".to_owned()))?,
+            ),
+            max_priority_fee_per_gas: u128::from_be_bytes(
+                p.max_priority_fee_per_gas
+                    .as_slice()
+                    .try_into()
+                    .map_err(|_| {
+                        Error::ExecutionFailed("invalid max_priority_fee_per_gas".to_owned())
+                    })?,
+            ),
+            to: TxKind::Call(to),
+            value: U256::from_be_slice(p.value.as_slice()),
+            input: Bytes::from(p.input),
+            access_list: AccessList::default(),
+        };
+
+        let sig = self
+            .evm
+            .ask(ClientSignTransaction {
+                client_id: p.client_id,
+                wallet_address,
+                transaction,
+            })
+            .await
+            .map_err(|e| Error::ExecutionFailed(format!("sign one-off tx: {e}")))?;
+
+        let mut conn = self.db.get().await.map_err(Error::DatabaseConnection)?;
+        diesel::insert_into(schema::proposal_result::table)
+            .values(NewProposalResult {
+                proposal_id,
+                data: sig.as_bytes().to_vec(),
+            })
+            .execute(&mut conn)
+            .await
+            .map_err(|e| Error::ExecutionFailed(format!("store proposal result: {e}")))?;
+
+        Ok(())
+    }
+
+    async fn execute_approve_persistent_grant(&self, payload_bytes: Vec<u8>) -> Result<(), Error> {
+        use crate::{
+            actors::evm::OperatorCreateGrant,
+            evm::policies::{
+                SharedGrantSettings, SpecificGrant, TransactionRateLimit, VolumeRateLimit,
+                ether_transfer, token_transfers,
+            },
+        };
+        use alloy::primitives::{Address, U256};
+        use arbiter_proto::proto::operator::governance::{
+            ApprovePersistentGrantPayload, approve_persistent_grant_payload::Specific,
+        };
+        use chrono::Duration;
+        use prost::Message as _;
+
+        let payload = ApprovePersistentGrantPayload::decode(payload_bytes.as_slice())
+            .map_err(|e| Error::ExecutionFailed(format!("decode grant payload: {e}")))?;
+
+        let basic = SharedGrantSettings {
+            wallet_access_id: payload.wallet_access_id,
+            chain: payload.chain_id,
+            valid_from: payload
+                .valid_from_secs
+                .and_then(|s| chrono::DateTime::from_timestamp(s, 0)),
+            valid_until: payload
+                .valid_until_secs
+                .and_then(|s| chrono::DateTime::from_timestamp(s, 0)),
+            max_gas_fee_per_gas: payload
+                .max_gas_fee_per_gas
+                .map(|b| U256::from_be_slice(b.as_slice())),
+            max_priority_fee_per_gas: payload
+                .max_priority_fee_per_gas
+                .map(|b| U256::from_be_slice(b.as_slice())),
+            rate_limit: payload.rate_limit.map(|r| TransactionRateLimit {
+                count: r.count,
+                window: Duration::seconds(r.window_secs),
+            }),
+        };
+
+        let grant = match payload.specific {
+            Some(Specific::EtherTransfer(spec)) => {
+                let target: Vec<Address> = spec
+                    .targets
+                    .iter()
+                    .map(|b| Address::from_slice(b.as_slice()))
+                    .collect();
+                let limit = spec
+                    .limit
+                    .map(|l| VolumeRateLimit {
+                        max_volume: U256::from_be_slice(l.max_volume.as_slice()),
+                        window: Duration::seconds(l.window_secs),
+                    })
+                    .ok_or_else(|| {
+                        Error::ExecutionFailed("missing ether transfer limit".to_owned())
+                    })?;
+                SpecificGrant::EtherTransfer(ether_transfer::Settings { target, limit })
+            }
+            Some(Specific::TokenTransfer(spec)) => {
+                let token_contract = Address::from_slice(spec.token_contract.as_slice());
+                let target = spec.target.map(|b| Address::from_slice(b.as_slice()));
+                let volume_limits: Vec<VolumeRateLimit> = spec
+                    .volume_limits
+                    .iter()
+                    .map(|l| VolumeRateLimit {
+                        max_volume: U256::from_be_slice(l.max_volume.as_slice()),
+                        window: Duration::seconds(l.window_secs),
+                    })
+                    .collect();
+                SpecificGrant::TokenTransfer(token_transfers::Settings {
+                    token_contract,
+                    target,
+                    volume_limits,
+                })
+            }
+            None => return Err(Error::ExecutionFailed("missing grant specific".to_owned())),
+        };
+
+        self.evm
+            .ask(OperatorCreateGrant { basic, grant })
+            .await
+            .map_err(|e| Error::ExecutionFailed(format!("create grant: {e}")))?;
+
+        Ok(())
+    }
+
+    async fn execute_approve_sdk_client(&self, client_id: i32) -> Result<(), Error> {
+        use crate::{crypto::integrity, peers::client::ClientCredentials};
+        use arbiter_crypto::authn;
+
+        let mut conn = self.db.get().await.map_err(Error::DatabaseConnection)?;
+
+        let pubkey_bytes: Vec<u8> = schema::program_client::table
+            .find(client_id)
+            .select(schema::program_client::public_key)
+            .first(&mut conn)
+            .await
+            .map_err(|e| Error::ExecutionFailed(format!("client not found: {e}")))?;
+
+        let pubkey = authn::PublicKey::try_from(pubkey_bytes.as_slice())
+            .map_err(|()| Error::ExecutionFailed("invalid client public key".to_owned()))?;
+
+        let creds = ClientCredentials { pubkey };
+
+        integrity::sign_entity(&mut conn, &self.vault, &creds, client_id)
+            .await
+            .map_err(|e| {
+                error!(?e, "Failed to sign integrity envelope for client");
+                Error::ExecutionFailed(e.to_string())
+            })
+    }
+}

server/crates/arbiter-server/src/actors/vault/mod.rs

@@ -1,13 +1,13 @@
 use crate::{
     crypto::{
-        KeyCell, derive_key,
+        KeyCell,
         encryption::v1::{self, Nonce},
         integrity::v1::HmacSha256,
     },
     db::{
         self,
-        models::{self, RootKeyHistory},
-        schema::{self},
+        models::{self, RootKeyHistory, RootKeyHistoryId},
+        schema,
     },
 };
 use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
@@ -25,7 +25,6 @@ use strum::{EnumDiscriminants, IntoDiscriminant};
 use tracing::{error, info};
 
 pub mod events {
-
     #[derive(Clone, Copy)]
     pub struct Bootstrapped;
 
@@ -64,7 +63,7 @@ pub enum Error {
 }
 
 struct Unsealed {
-    root_key_history_id: i32,
+    root_key_history_id: RootKeyHistoryId,
     root_key: KeyCell,
 }
 
@@ -73,8 +72,9 @@ struct Unsealed {
 enum State {
     #[default]
     Unbootstrapped,
+
     Sealed {
-        root_key_history_id: i32,
+        root_key_history_id: RootKeyHistoryId,
     },
     Unsealed(Unsealed),
 }
@@ -90,7 +90,6 @@ pub struct Vault {
     events: ActorRef<MessageBus>,
 }
 
-#[messages]
 impl Vault {
     pub async fn new(db: db::DatabasePool, events: ActorRef<MessageBus>) -> Result<Self, Error> {
         let state = {
@@ -113,9 +112,12 @@ impl Vault {
         Ok(Self { db, state, events })
     }
 
-    // Exclusive transaction to avoid race condtions if multiple vaults write
+    // Exclusive transaction to avoid race conditions if multiple vaults write
     // additional layer of protection against nonce-reuse
-    async fn get_new_nonce(pool: &db::DatabasePool, root_key_id: i32) -> Result<Nonce, Error> {
+    async fn get_new_nonce(
+        pool: &db::DatabasePool,
+        root_key_id: RootKeyHistoryId,
+    ) -> Result<Nonce, Error> {
         let mut conn = pool.get().await?;
 
         let nonce = conn
@@ -128,7 +130,7 @@ impl Vault {
 
                 let mut nonce = Nonce::try_from(current_nonce.as_slice()).map_err(|()| {
                     error!(
-                        "Broken database: invalid nonce for root key history id={}",
+                        "Broken database: invalid nonce for root key history id={:#?}",
                         root_key_id
                     );
                     Error::BrokenDatabase
@@ -155,43 +157,47 @@ impl Vault {
             State::Sealed { .. } => Err(Error::Sealed),
         }
     }
+}
 
+#[messages]
+impl Vault {
     #[message]
-    pub async fn bootstrap(&mut self, seal_key_raw: SafeCell<Vec<u8>>) -> Result<(), Error> {
-        if !matches!(self.state, State::Unbootstrapped) {
+    pub async fn bootstrap(&mut self, mut seal_key: KeyCell) -> Result<(), Error> {
+        if !matches!(&self.state, State::Unbootstrapped) {
             return Err(Error::AlreadyBootstrapped);
         }
-        let salt = v1::generate_salt();
-        let mut seal_key = derive_key(seal_key_raw, &salt);
+
         let mut root_key = KeyCell::new_secure_random();
 
         // Zero nonces are fine because they are one-time
         let root_key_nonce = Nonce::default();
         let data_encryption_nonce = Nonce::default();
 
-        let root_key_ciphertext: Vec<u8> = root_key.0.read_inline(|reader| {
-            let root_key_reader = reader.as_slice();
+        // Generate salt (kept for schema compat)
+        let root_key_salt = v1::generate_salt();
+
+        let root_key_ciphertext: Vec<u8> = root_key.0.read_inline(|rk| {
             seal_key
-                .encrypt(&root_key_nonce, v1::ROOT_KEY_TAG, root_key_reader)
+                .encrypt(&root_key_nonce, v1::ROOT_KEY_TAG, rk.as_slice())
                 .map_err(|err| {
                     error!(?err, "Fatal bootstrap error");
                     Error::Encryption(err)
                 })
         })?;
 
+        let data_encryption_nonce_bytes = data_encryption_nonce.to_vec();
         let mut conn = self.db.get().await?;
 
-        let data_encryption_nonce_bytes = data_encryption_nonce.to_vec();
         let root_key_history_id = conn
             .transaction(async |conn| {
-                let root_key_history_id: i32 = insert_into(schema::root_key_history::table)
+                let root_key_history_id = insert_into(schema::root_key_history::table)
                     .values(&models::NewRootKeyHistory {
                         ciphertext: root_key_ciphertext.clone(),
                         tag: v1::ROOT_KEY_TAG.to_vec(),
                         root_key_encryption_nonce: root_key_nonce.to_vec(),
                         data_encryption_nonce: data_encryption_nonce_bytes.clone(),
                         schema_version: 1,
-                        salt: salt.to_vec(),
+                        salt: root_key_salt.to_vec(),
                     })
                     .returning(schema::root_key_history::id)
                     .get_result(&mut *conn)
@@ -202,7 +208,9 @@ impl Vault {
                     .execute(&mut *conn)
                     .await?;
 
-                Result::<_, diesel::result::Error>::Ok(root_key_history_id)
+                Result::<_, diesel::result::Error>::Ok(RootKeyHistoryId::from_raw(
+                    root_key_history_id,
+                ))
             })
             .await?;
 
@@ -218,52 +226,47 @@ impl Vault {
     }
 
     #[message]
-    pub async fn try_unseal(&mut self, seal_key_raw: SafeCell<Vec<u8>>) -> Result<(), Error> {
+    pub async fn try_unseal(&mut self, mut seal_key: KeyCell) -> Result<(), Error> {
         let State::Sealed {
             root_key_history_id,
         } = &self.state
         else {
             return Err(Error::NotBootstrapped);
         };
+        let root_key_history_id = *root_key_history_id;
 
-        // We don't want to hold connection while doing expensive KDF work
+        // We don't want to hold connection while doing expensive work
         let current_key = {
             let mut conn = self.db.get().await?;
             schema::root_key_history::table
-                .filter(schema::root_key_history::id.eq(*root_key_history_id))
+                .filter(schema::root_key_history::id.eq(root_key_history_id))
                 .select(RootKeyHistory::as_select())
                 .first(&mut conn)
                 .await?
         };
 
-        let salt = &current_key.salt;
-        let salt = v1::Salt::try_from(salt.as_slice()).map_err(|_| {
-            error!("Broken database: invalid salt for root key");
-            Error::BrokenDatabase
-        })?;
-        let mut seal_key = derive_key(seal_key_raw, &salt);
-
-        let mut root_key = SafeCell::new(current_key.ciphertext.clone());
-
         let nonce =
             Nonce::try_from(current_key.root_key_encryption_nonce.as_slice()).map_err(|()| {
                 error!("Broken database: invalid nonce for root key");
                 Error::BrokenDatabase
             })?;
 
+        let mut root_key_bytes = SafeCell::new(current_key.ciphertext.clone());
         seal_key
-            .decrypt_in_place(&nonce, v1::ROOT_KEY_TAG, &mut root_key)
+            .decrypt_in_place(&nonce, v1::ROOT_KEY_TAG, &mut root_key_bytes)
             .map_err(|err| {
                 error!(?err, "Failed to unseal root key: invalid seal key");
                 Error::InvalidKey
             })?;
 
+        let root_key = KeyCell::try_from(root_key_bytes).map_err(|()| {
+            error!("Broken database: invalid encryption key size");
+            Error::BrokenDatabase
+        })?;
+
         self.state = State::Unsealed(Unsealed {
             root_key_history_id: current_key.id,
-            root_key: KeyCell::try_from(root_key).map_err(|err| {
-                error!(?err, "Broken database: invalid encryption key size");
-                Error::BrokenDatabase
-            })?,
+            root_key,
         });
 
         info!("Vault unsealed successfully");
@@ -272,6 +275,77 @@ impl Vault {
         Ok(())
     }
 
+    /// Re-encrypts the root key with `new_seal_key` and records a new root_key_history row.
+    /// Called after a Shamir re-key so the old seal key is no longer sufficient to unseal.
+    #[message]
+    pub async fn rekey_root_key(&mut self, mut new_seal_key: KeyCell) -> Result<(), Error> {
+        let Unsealed {
+            root_key,
+            root_key_history_id,
+        } = Self::expect_unsealed(&mut self.state)?;
+
+        let new_nonce = Nonce::default();
+        let new_salt = v1::generate_salt();
+
+        let new_ciphertext: Vec<u8> = root_key.0.read_inline(|rk| {
+            new_seal_key
+                .encrypt(&new_nonce, v1::ROOT_KEY_TAG, rk.as_slice())
+                .map_err(|err| {
+                    error!(?err, "Fatal rekey error");
+                    Error::Encryption(err)
+                })
+        })?;
+
+        let data_encryption_nonce = Nonce::default();
+
+        let mut conn = self.db.get().await?;
+        let new_root_key_history_id: i32 = conn
+            .transaction(async |conn| {
+                let new_id = insert_into(schema::root_key_history::table)
+                    .values(&models::NewRootKeyHistory {
+                        ciphertext: new_ciphertext,
+                        tag: v1::ROOT_KEY_TAG.to_vec(),
+                        root_key_encryption_nonce: new_nonce.to_vec(),
+                        data_encryption_nonce: data_encryption_nonce.to_vec(),
+                        schema_version: 1,
+                        salt: new_salt.to_vec(),
+                    })
+                    .returning(schema::root_key_history::id)
+                    .get_result::<i32>(&mut *conn)
+                    .await?;
+
+                update(schema::arbiter_settings::table)
+                    .set(schema::arbiter_settings::root_key_id.eq(new_id))
+                    .execute(&mut *conn)
+                    .await?;
+
+                Result::<_, diesel::result::Error>::Ok(new_id)
+            })
+            .await?;
+
+        *root_key_history_id = RootKeyHistoryId::from_raw(new_root_key_history_id);
+        info!("Vault root key rekeyed successfully");
+        Ok(())
+    }
+
+    #[message]
+    pub async fn seal(&mut self) -> Result<(), Error> {
+        let Unsealed {
+            root_key_history_id,
+            ..
+        } = Self::expect_unsealed(&mut self.state)?;
+
+        self.state = State::Sealed {
+            root_key_history_id: *root_key_history_id,
+        };
+        let _ = self.events.tell(Publish(events::VaultResealed)).await;
+        Ok(())
+    }
+}
+
+// Server-side cryptographic operations
+#[messages]
+impl Vault {
     #[message]
     pub async fn decrypt(&mut self, aead_id: i32) -> Result<SafeCell<Vec<u8>>, Error> {
         let Unsealed { root_key, .. } = Self::expect_unsealed(&mut self.state)?;
@@ -340,7 +414,10 @@ impl Vault {
     }
 
     #[message]
-    pub fn sign_integrity(&mut self, mac_input: Vec<u8>) -> Result<(i32, Vec<u8>), Error> {
+    pub fn sign_integrity(
+        &mut self,
+        mac_input: Vec<u8>,
+    ) -> Result<(RootKeyHistoryId, Vec<u8>), Error> {
         let Unsealed {
             root_key,
             root_key_history_id,
@@ -350,7 +427,7 @@ impl Vault {
             HmacSha256::new_from_slice(k)
                 .unwrap_or_else(|_| unreachable!("HMAC accepts keys of any size"))
         });
-        hmac.update(&root_key_history_id.to_be_bytes());
+        hmac.update(&root_key_history_id.to_raw().to_be_bytes());
         hmac.update(&mac_input);
 
         let mac = hmac.finalize().into_bytes().to_vec();
@@ -362,7 +439,7 @@ impl Vault {
         &mut self,
         mac_input: Vec<u8>,
         expected_mac: Vec<u8>,
-        key_version: i32,
+        key_version: RootKeyHistoryId,
     ) -> Result<bool, Error> {
         let Unsealed {
             root_key,
@@ -377,25 +454,11 @@ impl Vault {
             HmacSha256::new_from_slice(k)
                 .unwrap_or_else(|_| unreachable!("HMAC accepts keys of any size"))
         });
-        hmac.update(&key_version.to_be_bytes());
+        hmac.update(&key_version.to_raw().to_be_bytes());
         hmac.update(&mac_input);
 
         Ok(hmac.verify_slice(&expected_mac).is_ok())
     }
-
-    #[message]
-    pub async fn seal(&mut self) -> Result<(), Error> {
-        let Unsealed {
-            root_key_history_id,
-            ..
-        } = Self::expect_unsealed(&mut self.state)?;
-
-        self.state = State::Sealed {
-            root_key_history_id: *root_key_history_id,
-        };
-        let _ = self.events.tell(Publish(events::VaultResealed)).await;
-        Ok(())
-    }
 }
 
 #[cfg(test)]
@@ -409,8 +472,7 @@ mod tests {
         let mut actor = Vault::new(db.clone(), GlobalActors::spawn_message_bus())
             .await
             .unwrap();
-        let seal_key = SafeCell::new(b"test-seal-key".to_vec());
-        actor.bootstrap(seal_key).await.unwrap();
+        actor.bootstrap(KeyCell::from([0u8; 32])).await.unwrap();
         actor
     }
 
@@ -419,13 +481,12 @@ mod tests {
     async fn nonce_monotonic_even_when_nonce_allocation_interleaves() {
         let db = db::create_test_pool().await;
         let mut actor = bootstrapped_actor(&db).await;
-
         let State::Unsealed(Unsealed {
             root_key_history_id,
             ..
         }) = actor.state
         else {
-            panic!("expected unsealed state")
+            panic!("expected unsealed state");
         };
 
         let n1 = Vault::get_new_nonce(&db, root_key_history_id)

server/crates/arbiter-server/src/actors/vault_coordinator/mod.rs

@@ -0,0 +1,721 @@
+use std::collections::HashMap;
+
+use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
+use diesel::{ExpressionMethods as _, QueryDsl};
+use diesel_async::RunQueryDsl;
+use kameo::{Actor, actor::ActorRef, messages};
+use rand_core::{OsRng, RngCore as _};
+use tracing::error;
+
+use crate::{
+    actors::vault::{Bootstrap, RekeyRootKey, TryUnseal, Vault},
+    crypto::{KeyCell, derive_key, encryption::v1::Nonce, shamir, shamir::shamir_threshold},
+    db::{self, models, schema},
+};
+
+#[derive(Debug, thiserror::Error)]
+pub enum Error {
+    #[error("Already coordinating a bootstrap")]
+    AlreadyBootstrapping,
+    #[error("Already coordinating an unseal")]
+    AlreadyUnsealing,
+    #[error("Rekey not in progress")]
+    NotRekeying,
+    #[error("Bootstrap not in progress")]
+    NotBootstrapping,
+    #[error("Unseal not in progress")]
+    NotUnsealing,
+    #[error("Operator already contributed")]
+    DuplicateContribution,
+    #[error("Operator not found in database")]
+    OperatorNotFound,
+    #[error("Invalid passphrase (decryption failed)")]
+    InvalidPassphrase,
+    #[error("Shamir error: {0}")]
+    Shamir(String),
+    #[error("Database connection error: {0}")]
+    DatabaseConnection(#[from] db::PoolError),
+    #[error("Database query error: {0}")]
+    DatabaseQuery(#[from] diesel::result::Error),
+    #[error("Encryption error")]
+    Encryption,
+    #[error("Vault error")]
+    VaultError,
+    #[error("Two-operator vaults require at least one recovery share")]
+    TwoOperatorsRequireRecovery,
+    #[error("Broken database")]
+    BrokenDatabase,
+}
+
+// Passphrases stored as plain Vec<u8> (not SafeCell) so CoordinatorState is Sync.
+// They are ephemeral and dropped immediately after use.
+enum CoordinatorState {
+    Idle,
+    Bootstrapping {
+        declared_count: usize,
+        recovery_count: usize,
+        passphrases: HashMap<i32, Vec<u8>>,
+        recovery_passphrases: HashMap<i32, Vec<u8>>,
+    },
+    Unsealing {
+        threshold: usize,
+        ordinary_passphrases: HashMap<i32, Vec<u8>>,
+        recovery_passphrases: HashMap<i32, Vec<u8>>,
+    },
+    /// Shamir re-key after `replace_operator` or `update_shamir_parameters` is approved (§3.3).
+    /// Collects new passphrases from all current operators, then generates a fresh seal key,
+    /// re-splits it, and re-encrypts the vault root key.
+    Rekeying {
+        ordinary_count: usize,
+        recovery_count: usize,
+        passphrases: HashMap<i32, Vec<u8>>,
+        recovery_passphrases: HashMap<i32, Vec<u8>>,
+    },
+}
+
+#[derive(Actor)]
+pub struct VaultCoordinator {
+    db: db::DatabasePool,
+    vault: ActorRef<Vault>,
+    state: CoordinatorState,
+}
+
+impl VaultCoordinator {
+    pub const fn new(db: db::DatabasePool, vault: ActorRef<Vault>) -> Self {
+        Self {
+            db,
+            vault,
+            state: CoordinatorState::Idle,
+        }
+    }
+}
+
+const SHARE_AAD: &[u8] = b"arbiter/shamir-share/v1";
+
+fn encrypt_share(
+    passphrase_bytes: Vec<u8>,
+    share: &[u8],
+) -> Result<(Vec<u8>, Vec<u8>, Vec<u8>), Error> {
+    let mut share_salt = vec![0u8; 32];
+    OsRng.fill_bytes(&mut share_salt);
+
+    let mut passphrase_cell = SafeCell::new(passphrase_bytes);
+    let mut share_seal_key = derive_key(&mut passphrase_cell, &share_salt);
+
+    let nonce = Nonce::default();
+    let encrypted_share = share_seal_key
+        .encrypt(&nonce, SHARE_AAD, share)
+        .map_err(|_| Error::Encryption)?;
+
+    Ok((encrypted_share, nonce.to_vec(), share_salt))
+}
+
+fn decrypt_share(
+    passphrase_bytes: Vec<u8>,
+    encrypted_share: Vec<u8>,
+    share_nonce_bytes: &[u8],
+    share_salt: &[u8],
+    operator_id: i32,
+) -> Result<Vec<u8>, Error> {
+    let nonce = Nonce::try_from(share_nonce_bytes).map_err(|()| {
+        error!(operator_id, "Invalid nonce in DB");
+        Error::BrokenDatabase
+    })?;
+
+    let mut passphrase_cell = SafeCell::new(passphrase_bytes);
+    let mut share_seal_key = derive_key(&mut passphrase_cell, share_salt);
+
+    let mut share_buffer = SafeCell::new(encrypted_share);
+    share_seal_key
+        .decrypt_in_place(&nonce, SHARE_AAD, &mut share_buffer)
+        .map_err(|_| Error::InvalidPassphrase)?;
+
+    Ok(share_buffer.read().clone())
+}
+
+/// §3.4: Split the seal key across ordinary + recovery operators.
+/// Threshold = `shamir_threshold(ordinary_count)`; total shares = ordinary + recovery.
+/// When `ordinary_count` == 1 (threshold = 1), vsss-rs does not support a proper split,
+/// so each share is the seal key itself — any single participant can reconstruct.
+async fn finalize_bootstrap(
+    db: db::DatabasePool,
+    vault: ActorRef<Vault>,
+    ordinary_passphrases: HashMap<i32, Vec<u8>>,
+    recovery_passphrases: HashMap<i32, Vec<u8>>,
+) -> Result<(), Error> {
+    let ordinary_count = ordinary_passphrases.len();
+    let recovery_count = recovery_passphrases.len();
+    let total = ordinary_count + recovery_count;
+    let threshold = shamir_threshold(ordinary_count);
+
+    let mut seal_key_bytes = [0u8; 32];
+    OsRng.fill_bytes(&mut seal_key_bytes);
+
+    // threshold == 1 means any single share reconstructs the key (degenerate split).
+    // vsss-rs requires threshold >= 2, so we store the key directly in this case.
+    let shares: Vec<Vec<u8>> = if threshold >= 2 {
+        shamir::split_key(threshold, total, &seal_key_bytes, OsRng)
+            .map_err(|e| Error::Shamir(e.to_string()))?
+    } else {
+        std::iter::repeat_with(|| seal_key_bytes.to_vec()).take(total).collect()
+    };
+
+    let seal_key = KeyCell::from(seal_key_bytes);
+
+    let mut conn = db.get().await?;
+    let mut shares_iter = shares.into_iter();
+
+    for (operator_id_raw, passphrase_bytes) in ordinary_passphrases {
+        let share = shares_iter
+            .next()
+            .expect("split_key returned enough shares");
+        let (encrypted_share, nonce_bytes, share_salt) = encrypt_share(passphrase_bytes, &share)?;
+
+        diesel::replace_into(schema::operator::table)
+            .values((
+                schema::operator::id.eq(Some(operator_id_raw)),
+                schema::operator::share.eq(&encrypted_share),
+                schema::operator::share_nonce.eq(&nonce_bytes),
+                schema::operator::share_salt.eq(&share_salt),
+                schema::operator::created_at.eq(models::SqliteTimestamp::now()),
+                schema::operator::updated_at.eq(models::SqliteTimestamp::now()),
+            ))
+            .execute(&mut conn)
+            .await?;
+    }
+
+    for (recovery_id_raw, passphrase_bytes) in recovery_passphrases {
+        let share = shares_iter
+            .next()
+            .expect("split_key returned enough shares");
+        let (encrypted_share, nonce_bytes, share_salt) = encrypt_share(passphrase_bytes, &share)?;
+
+        diesel::replace_into(schema::recovery_operator::table)
+            .values((
+                schema::recovery_operator::id.eq(recovery_id_raw),
+                schema::recovery_operator::share.eq(&encrypted_share),
+                schema::recovery_operator::share_nonce.eq(&nonce_bytes),
+                schema::recovery_operator::share_salt.eq(&share_salt),
+                schema::recovery_operator::created_at.eq(models::SqliteTimestamp::now()),
+                schema::recovery_operator::updated_at.eq(models::SqliteTimestamp::now()),
+            ))
+            .execute(&mut conn)
+            .await?;
+    }
+
+    vault.ask(Bootstrap { seal_key }).await.map_err(|err| {
+        error!(?err, "Vault bootstrap failed");
+        Error::VaultError
+    })?;
+
+    Ok(())
+}
+
+/// §3.5: Unseal using any threshold-sized mix of ordinary + recovery shares.
+async fn finalize_unseal(
+    db: db::DatabasePool,
+    vault: ActorRef<Vault>,
+    ordinary_passphrases: HashMap<i32, Vec<u8>>,
+    recovery_passphrases: HashMap<i32, Vec<u8>>,
+) -> Result<(), Error> {
+    let mut conn = db.get().await?;
+
+    // Determine whether shares were stored as raw keys (threshold=1) or vsss-rs splits (threshold>=2).
+    let ordinary_operator_count: i64 = schema::operator::table
+        .count()
+        .get_result(&mut conn)
+        .await?;
+    let threshold = shamir_threshold(ordinary_operator_count as usize);
+
+    let mut shares: Vec<Vec<u8>> = Vec::new();
+
+    for (operator_id_raw, passphrase_bytes) in ordinary_passphrases {
+        let (encrypted_share, share_nonce_bytes, share_salt): (Vec<u8>, Vec<u8>, Vec<u8>) =
+            schema::operator::table
+                .filter(schema::operator::id.eq(Some(operator_id_raw)))
+                .select((
+                    schema::operator::share,
+                    schema::operator::share_nonce,
+                    schema::operator::share_salt,
+                ))
+                .first(&mut conn)
+                .await
+                .map_err(|_| Error::OperatorNotFound)?;
+
+        shares.push(decrypt_share(
+            passphrase_bytes,
+            encrypted_share,
+            &share_nonce_bytes,
+            &share_salt,
+            operator_id_raw,
+        )?);
+    }
+
+    for (recovery_id_raw, passphrase_bytes) in recovery_passphrases {
+        let (encrypted_share, share_nonce_bytes, share_salt): (Vec<u8>, Vec<u8>, Vec<u8>) =
+            schema::recovery_operator::table
+                .find(recovery_id_raw)
+                .select((
+                    schema::recovery_operator::share,
+                    schema::recovery_operator::share_nonce,
+                    schema::recovery_operator::share_salt,
+                ))
+                .first(&mut conn)
+                .await
+                .map_err(|_| Error::OperatorNotFound)?;
+
+        shares.push(decrypt_share(
+            passphrase_bytes,
+            encrypted_share,
+            &share_nonce_bytes,
+            &share_salt,
+            recovery_id_raw,
+        )?);
+    }
+
+    // When threshold==1, shares are raw 32-byte seal keys (vsss-rs cannot split 1-of-N).
+    // Any single decrypted share is the key itself.
+    let seal_key_bytes: [u8; 32] = if threshold <= 1 {
+        let raw = shares
+            .into_iter()
+            .next()
+            .ok_or_else(|| Error::Shamir("No shares available".into()))?;
+        raw.try_into()
+            .map_err(|_| Error::Shamir("Invalid share length".into()))?
+    } else {
+        shamir::combine_shares(&shares).map_err(|e| Error::Shamir(e.to_string()))?
+    };
+
+    let seal_key = KeyCell::from(seal_key_bytes);
+
+    vault.ask(TryUnseal { seal_key }).await.map_err(|err| {
+        error!(?err, "Vault unseal failed");
+        Error::VaultError
+    })?;
+
+    Ok(())
+}
+
+/// §3.3: Generate a fresh seal key, split across current operators, re-encrypt the vault root key.
+/// Called after `replace_operator` or `update_shamir_parameters` is approved and all contributors submit.
+async fn finalize_rekey(
+    db: db::DatabasePool,
+    vault: ActorRef<Vault>,
+    ordinary_passphrases: HashMap<i32, Vec<u8>>,
+    recovery_passphrases: HashMap<i32, Vec<u8>>,
+) -> Result<(), Error> {
+    let ordinary_count = ordinary_passphrases.len();
+    let recovery_count = recovery_passphrases.len();
+    let total = ordinary_count + recovery_count;
+    let threshold = shamir_threshold(ordinary_count);
+
+    let mut new_seal_key_bytes = [0u8; 32];
+    OsRng.fill_bytes(&mut new_seal_key_bytes);
+
+    let shares: Vec<Vec<u8>> = if threshold >= 2 {
+        shamir::split_key(threshold, total, &new_seal_key_bytes, OsRng)
+            .map_err(|e| Error::Shamir(e.to_string()))?
+    } else {
+        std::iter::repeat_with(|| new_seal_key_bytes.to_vec())
+            .take(total)
+            .collect()
+    };
+
+    let mut conn = db.get().await?;
+    let mut shares_iter = shares.into_iter();
+
+    for (operator_id_raw, passphrase_bytes) in ordinary_passphrases {
+        let share = shares_iter
+            .next()
+            .expect("split_key returned enough shares");
+        let (encrypted_share, nonce_bytes, share_salt) = encrypt_share(passphrase_bytes, &share)?;
+
+        diesel::replace_into(schema::operator::table)
+            .values((
+                schema::operator::id.eq(Some(operator_id_raw)),
+                schema::operator::share.eq(&encrypted_share),
+                schema::operator::share_nonce.eq(&nonce_bytes),
+                schema::operator::share_salt.eq(&share_salt),
+                schema::operator::created_at.eq(models::SqliteTimestamp::now()),
+                schema::operator::updated_at.eq(models::SqliteTimestamp::now()),
+            ))
+            .execute(&mut conn)
+            .await?;
+    }
+
+    for (recovery_id_raw, passphrase_bytes) in recovery_passphrases {
+        let share = shares_iter
+            .next()
+            .expect("split_key returned enough shares");
+        let (encrypted_share, nonce_bytes, share_salt) = encrypt_share(passphrase_bytes, &share)?;
+
+        diesel::replace_into(schema::recovery_operator::table)
+            .values((
+                schema::recovery_operator::id.eq(recovery_id_raw),
+                schema::recovery_operator::share.eq(&encrypted_share),
+                schema::recovery_operator::share_nonce.eq(&nonce_bytes),
+                schema::recovery_operator::share_salt.eq(&share_salt),
+                schema::recovery_operator::created_at.eq(models::SqliteTimestamp::now()),
+                schema::recovery_operator::updated_at.eq(models::SqliteTimestamp::now()),
+            ))
+            .execute(&mut conn)
+            .await?;
+    }
+
+    drop(conn);
+
+    let new_seal_key = KeyCell::from(new_seal_key_bytes);
+    vault
+        .ask(RekeyRootKey { new_seal_key })
+        .await
+        .map_err(|err| {
+            error!(?err, "Vault rekey failed");
+            Error::VaultError
+        })?;
+
+    Ok(())
+}
+
+#[messages]
+impl VaultCoordinator {
+    /// Phase 1 of multi-operator bootstrap: declare the committee size.
+    #[message]
+    #[expect(clippy::unused_async, reason = "kameo requires messages to be async")]
+    pub async fn start_bootstrap(
+        &mut self,
+        operator_id: i32,
+        declared_count: usize,
+        recovery_count: usize,
+    ) -> Result<(), Error> {
+        let _ = operator_id; // fixme!: any authenticated operator may announce the committee size. the first call wins
+        if !matches!(self.state, CoordinatorState::Idle) {
+            return Err(Error::AlreadyBootstrapping);
+        }
+        if declared_count == 2 && recovery_count == 0 {
+            return Err(Error::TwoOperatorsRequireRecovery);
+        }
+        self.state = CoordinatorState::Bootstrapping {
+            declared_count,
+            recovery_count,
+            passphrases: HashMap::new(),
+            recovery_passphrases: HashMap::new(),
+        };
+        Ok(())
+    }
+
+    /// Phase 2 of multi-operator bootstrap: ordinary operator contributes a passphrase.
+    /// Returns Ok(true) when all ordinary + recovery operators contributed and bootstrap finalized.
+    #[message]
+    pub async fn contribute_bootstrap(
+        &mut self,
+        operator_id: i32,
+        mut passphrase: SafeCell<Vec<u8>>,
+    ) -> Result<bool, Error> {
+        let CoordinatorState::Bootstrapping {
+            declared_count,
+            recovery_count,
+            passphrases,
+            recovery_passphrases,
+        } = &mut self.state
+        else {
+            return Err(Error::NotBootstrapping);
+        };
+
+        if passphrases.contains_key(&operator_id) {
+            return Err(Error::DuplicateContribution);
+        }
+
+        let passphrase_bytes = passphrase.read().to_vec();
+        passphrases.insert(operator_id, passphrase_bytes);
+
+        if passphrases.len() < *declared_count || recovery_passphrases.len() < *recovery_count {
+            return Ok(false);
+        }
+
+        let CoordinatorState::Bootstrapping {
+            passphrases,
+            recovery_passphrases,
+            ..
+        } = std::mem::replace(&mut self.state, CoordinatorState::Idle)
+        else {
+            unreachable!()
+        };
+
+        finalize_bootstrap(
+            self.db.clone(),
+            self.vault.clone(),
+            passphrases,
+            recovery_passphrases,
+        )
+        .await?;
+        Ok(true)
+    }
+
+    /// Phase 2 of multi-operator bootstrap: recovery operator contributes a passphrase.
+    /// Returns Ok(true) when all contributors are in and bootstrap finalized.
+    #[message]
+    pub async fn contribute_recovery_bootstrap(
+        &mut self,
+        recovery_operator_id: i32,
+        mut passphrase: SafeCell<Vec<u8>>,
+    ) -> Result<bool, Error> {
+        let CoordinatorState::Bootstrapping {
+            declared_count,
+            recovery_count,
+            passphrases,
+            recovery_passphrases,
+        } = &mut self.state
+        else {
+            return Err(Error::NotBootstrapping);
+        };
+
+        if recovery_passphrases.contains_key(&recovery_operator_id) {
+            return Err(Error::DuplicateContribution);
+        }
+
+        let passphrase_bytes = passphrase.read().to_vec();
+        recovery_passphrases.insert(recovery_operator_id, passphrase_bytes);
+
+        if passphrases.len() < *declared_count || recovery_passphrases.len() < *recovery_count {
+            return Ok(false);
+        }
+
+        let CoordinatorState::Bootstrapping {
+            passphrases,
+            recovery_passphrases,
+            ..
+        } = std::mem::replace(&mut self.state, CoordinatorState::Idle)
+        else {
+            unreachable!()
+        };
+
+        finalize_bootstrap(
+            self.db.clone(),
+            self.vault.clone(),
+            passphrases,
+            recovery_passphrases,
+        )
+        .await?;
+        Ok(true)
+    }
+
+    /// Contribute a passphrase for vault unseal (ordinary operator).
+    /// Returns Ok(true) when threshold reached and vault is unsealed.
+    #[message]
+    pub async fn contribute_unseal(
+        &mut self,
+        operator_id: i32,
+        mut passphrase: SafeCell<Vec<u8>>,
+    ) -> Result<bool, Error> {
+        self.ensure_unsealing_state().await?;
+
+        let CoordinatorState::Unsealing {
+            threshold,
+            ordinary_passphrases,
+            recovery_passphrases,
+        } = &mut self.state
+        else {
+            return Err(Error::NotUnsealing);
+        };
+
+        if ordinary_passphrases.contains_key(&operator_id) {
+            return Err(Error::DuplicateContribution);
+        }
+
+        let passphrase_bytes = passphrase.read().to_vec();
+        ordinary_passphrases.insert(operator_id, passphrase_bytes);
+
+        if ordinary_passphrases.len() + recovery_passphrases.len() < *threshold {
+            return Ok(false);
+        }
+
+        self.do_finalize_unseal().await
+    }
+
+    /// Contribute a passphrase for vault unseal (recovery operator, §3.5).
+    /// Recovery operators may contribute during unseal when recovery is active.
+    /// Returns Ok(true) when threshold reached and vault is unsealed.
+    #[message]
+    pub async fn contribute_recovery_unseal(
+        &mut self,
+        recovery_operator_id: i32,
+        mut passphrase: SafeCell<Vec<u8>>,
+    ) -> Result<bool, Error> {
+        self.ensure_unsealing_state().await?;
+
+        let CoordinatorState::Unsealing {
+            threshold,
+            ordinary_passphrases,
+            recovery_passphrases,
+        } = &mut self.state
+        else {
+            return Err(Error::NotUnsealing);
+        };
+
+        if recovery_passphrases.contains_key(&recovery_operator_id) {
+            return Err(Error::DuplicateContribution);
+        }
+
+        let passphrase_bytes = passphrase.read().to_vec();
+        recovery_passphrases.insert(recovery_operator_id, passphrase_bytes);
+
+        if ordinary_passphrases.len() + recovery_passphrases.len() < *threshold {
+            return Ok(false);
+        }
+
+        self.do_finalize_unseal().await
+    }
+}
+
+impl VaultCoordinator {
+    /// Initializes `CoordinatorState::Unsealing` on first call if still `Idle`.
+    /// Threshold is based on ordinary operator count only (§3.4).
+    async fn ensure_unsealing_state(&mut self) -> Result<(), Error> {
+        if matches!(self.state, CoordinatorState::Idle) {
+            let mut conn = self.db.get().await?;
+            let ordinary_count: i64 = schema::operator::table
+                .count()
+                .get_result(&mut conn)
+                .await?;
+            let threshold = shamir_threshold(usize::try_from(ordinary_count).unwrap_or_default());
+            self.state = CoordinatorState::Unsealing {
+                threshold,
+                ordinary_passphrases: HashMap::new(),
+                recovery_passphrases: HashMap::new(),
+            };
+        }
+        Ok(())
+    }
+
+    /// Moves state back to Idle and calls finalize_unseal.
+    async fn do_finalize_unseal(&mut self) -> Result<bool, Error> {
+        let CoordinatorState::Unsealing {
+            ordinary_passphrases,
+            recovery_passphrases,
+            ..
+        } = std::mem::replace(&mut self.state, CoordinatorState::Idle)
+        else {
+            unreachable!()
+        };
+
+        finalize_unseal(
+            self.db.clone(),
+            self.vault.clone(),
+            ordinary_passphrases,
+            recovery_passphrases,
+        )
+        .await?;
+        Ok(true)
+    }
+
+    async fn do_finalize_rekey(&mut self) -> Result<bool, Error> {
+        let CoordinatorState::Rekeying {
+            passphrases,
+            recovery_passphrases,
+            ..
+        } = std::mem::replace(&mut self.state, CoordinatorState::Idle)
+        else {
+            unreachable!()
+        };
+
+        finalize_rekey(
+            self.db.clone(),
+            self.vault.clone(),
+            passphrases,
+            recovery_passphrases,
+        )
+        .await?;
+        Ok(true)
+    }
+}
+
+#[messages]
+impl VaultCoordinator {
+    /// Begin Shamir re-key after a key-rotation proposal is approved (§3.3).
+    /// Queries the current operator and recovery operator counts from the DB,
+    /// then transitions to Rekeying state awaiting contributions from all of them.
+    #[message]
+    pub async fn start_rekey(&mut self) -> Result<(), Error> {
+        if !matches!(self.state, CoordinatorState::Idle) {
+            return Err(Error::AlreadyBootstrapping);
+        }
+        let mut conn = self.db.get().await?;
+        let ordinary_count: i64 = schema::operator_identity::table
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        let recovery_count: i64 = schema::recovery_operator_identity::table
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        self.state = CoordinatorState::Rekeying {
+            ordinary_count: ordinary_count as usize,
+            recovery_count: recovery_count as usize,
+            passphrases: HashMap::new(),
+            recovery_passphrases: HashMap::new(),
+        };
+        Ok(())
+    }
+
+    /// Contribute an ordinary operator passphrase for the re-key.
+    /// Returns Ok(true) when all contributors have submitted and the re-key is complete.
+    #[message]
+    pub async fn contribute_rekey(
+        &mut self,
+        operator_id: i32,
+        mut passphrase: SafeCell<Vec<u8>>,
+    ) -> Result<bool, Error> {
+        let CoordinatorState::Rekeying {
+            ordinary_count,
+            recovery_count,
+            passphrases,
+            recovery_passphrases,
+        } = &mut self.state
+        else {
+            return Err(Error::NotRekeying);
+        };
+
+        if passphrases.contains_key(&operator_id) {
+            return Err(Error::DuplicateContribution);
+        }
+
+        passphrases.insert(operator_id, passphrase.read().to_vec());
+
+        if passphrases.len() < *ordinary_count || recovery_passphrases.len() < *recovery_count {
+            return Ok(false);
+        }
+
+        self.do_finalize_rekey().await
+    }
+
+    /// Contribute a recovery operator passphrase for the re-key.
+    /// Returns Ok(true) when all contributors have submitted and the re-key is complete.
+    #[message]
+    pub async fn contribute_recovery_rekey(
+        &mut self,
+        recovery_operator_id: i32,
+        mut passphrase: SafeCell<Vec<u8>>,
+    ) -> Result<bool, Error> {
+        let CoordinatorState::Rekeying {
+            ordinary_count,
+            recovery_count,
+            passphrases,
+            recovery_passphrases,
+        } = &mut self.state
+        else {
+            return Err(Error::NotRekeying);
+        };
+
+        if recovery_passphrases.contains_key(&recovery_operator_id) {
+            return Err(Error::DuplicateContribution);
+        }
+
+        recovery_passphrases.insert(recovery_operator_id, passphrase.read().to_vec());
+
+        if passphrases.len() < *ordinary_count || recovery_passphrases.len() < *recovery_count {
+            return Ok(false);
+        }
+
+        self.do_finalize_rekey().await
+    }
+}

server/crates/arbiter-server/src/crypto/encryption/v1.rs

@@ -61,12 +61,12 @@ mod tests {
     #[test]
     fn derive_seal_key_deterministic() {
         static PASSWORD: &[u8] = b"password";
-        let password = SafeCell::new(PASSWORD.to_vec());
-        let password2 = SafeCell::new(PASSWORD.to_vec());
+        let mut password = SafeCell::new(PASSWORD.to_vec());
+        let mut password2 = SafeCell::new(PASSWORD.to_vec());
         let salt = generate_salt();
 
-        let mut key1 = derive_key(password, &salt);
-        let mut key2 = derive_key(password2, &salt);
+        let mut key1 = derive_key(&mut password, &salt);
+        let mut key2 = derive_key(&mut password2, &salt);
 
         let key1_reader = key1.0.read();
         let key2_reader = key2.0.read();
@@ -77,10 +77,10 @@ mod tests {
     #[test]
     fn successful_derive() {
         static PASSWORD: &[u8] = b"password";
-        let password = SafeCell::new(PASSWORD.to_vec());
+        let mut password = SafeCell::new(PASSWORD.to_vec());
         let salt = generate_salt();
 
-        let mut key = derive_key(password, &salt);
+        let mut key = derive_key(&mut password, &salt);
         let key_reader = key.0.read();
 
         assert_ne!(key_reader.as_slice(), &[0u8; 32][..]);

server/crates/arbiter-server/src/crypto/integrity/v1.rs

@@ -52,7 +52,10 @@ pub const INTEGRITY_SUBKEY_TAG: &[u8] = b"arbiter/db-integrity-key/v1";
 
 pub type HmacSha256 = Hmac<Sha256>;
 
-pub use arbiter_crypto::integrity::Integrable;
+pub trait Integrable: Hashable {
+    const KIND: &'static str;
+    const VERSION: i32 = 1;
+}
 
 fn payload_hash(payload: &impl Hashable) -> [u8; 32] {
     let mut hasher = Sha256::new();
@@ -212,15 +215,15 @@ mod tests {
         },
         db::{self, schema},
     };
-    use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
-
-    use super::{Error, sign_entity, verify_entity};
-    #[derive(Clone, arbiter_macros::Hashable, arbiter_macros::Integrable)]
-    #[integrable(kind = "dummy_entity")]
+    use super::{Error, Integrable, sign_entity, verify_entity};
+    #[derive(Clone, arbiter_macros::Hashable)]
     struct DummyEntity {
         payload_version: i32,
         payload: Vec<u8>,
     }
+    impl Integrable for DummyEntity {
+        const KIND: &'static str = "dummy_entity";
+    }
 
     async fn bootstrapped_vault(db: &db::DatabasePool) -> ActorRef<Vault> {
         let actor = Vault::spawn(
@@ -230,7 +233,7 @@ mod tests {
         );
         actor
             .ask(Bootstrap {
-                seal_key_raw: SafeCell::new(b"integrity-test-seal-key".to_vec()),
+                seal_key: crate::crypto::KeyCell::from([0u8; 32]),
             })
             .await
             .unwrap();

server/crates/arbiter-server/src/crypto/mod.rs

@@ -1,5 +1,5 @@
 use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
-use encryption::v1::{Nonce, Salt};
+use encryption::v1::Nonce;
 
 use argon2::{Algorithm, Argon2};
 use chacha20poly1305::{
@@ -13,6 +13,7 @@ use rand::{
 
 pub mod encryption;
 pub mod integrity;
+pub mod shamir;
 
 pub struct KeyCell(pub SafeCell<Key>);
 impl From<SafeCell<Key>> for KeyCell {
@@ -20,6 +21,15 @@ impl From<SafeCell<Key>> for KeyCell {
         Self(value)
     }
 }
+impl From<[u8; 32]> for KeyCell {
+    fn from(bytes: [u8; 32]) -> Self {
+        let cell = SafeCell::new_inline_default(|key: &mut Key| {
+            key.copy_from_slice(&bytes);
+        });
+        Self(cell)
+    }
+}
+
 impl TryFrom<SafeCell<Vec<u8>>> for KeyCell {
     type Error = ();
 
@@ -28,7 +38,7 @@ impl TryFrom<SafeCell<Vec<u8>>> for KeyCell {
         if value.len() != size_of::<Key>() {
             return Err(());
         }
-        let cell = SafeCell::new_inline(|cell_write: &mut Key| {
+        let cell = SafeCell::new_inline_default(|cell_write: &mut Key| {
             cell_write.copy_from_slice(&value);
         });
         Ok(Self(cell))
@@ -37,7 +47,7 @@ impl TryFrom<SafeCell<Vec<u8>>> for KeyCell {
 
 impl KeyCell {
     pub fn new_secure_random() -> Self {
-        let key = SafeCell::new_inline(|key_buffer: &mut Key| {
+        let key = SafeCell::new_inline_default(|key_buffer: &mut Key| {
             let mut rng = StdRng::try_from_rng(&mut SysRng)
                 .expect("Rng failure is unrecoverable and should panic");
             rng.fill_bytes(key_buffer);
@@ -94,7 +104,7 @@ impl KeyCell {
 }
 
 /// Derive a fixed-length key from the password using Argon2id, which is designed for password hashing and key derivation.
-pub fn derive_key(mut password: SafeCell<Vec<u8>>, salt: &Salt) -> KeyCell {
+pub fn derive_key(password: &mut SafeCell<Vec<u8>>, salt: &[u8]) -> KeyCell {
     let params = {
         #[cfg(debug_assertions)]
         {
@@ -132,10 +142,10 @@ mod tests {
     #[test]
     fn encrypt_decrypt() {
         static PASSWORD: &[u8] = b"password";
-        let password = SafeCell::new(PASSWORD.to_vec());
+        let mut password = SafeCell::new(PASSWORD.to_vec());
         let salt = generate_salt();
 
-        let mut key = derive_key(password, &salt);
+        let mut key = derive_key(&mut password, &salt);
         let nonce = Nonce(*b"unique nonce 123 1231233"); // 24 bytes for XChaCha20Poly1305
         let associated_data = b"associated data";
         let mut buffer = b"secret data".to_vec();

server/crates/arbiter-server/src/crypto/shamir.rs

@@ -0,0 +1,41 @@
+use vsss_rs::Gf256;
+
+#[derive(Debug, thiserror::Error)]
+pub enum ShamirError {
+    #[error("Failed to split key: {0}")]
+    Split(String),
+    #[error("Failed to combine shares: {0}")]
+    Combine(String),
+}
+
+/// Split `key` into `total` shares where any `threshold` shares can reconstruct it.
+/// Each returned Vec<u8> is a share with format [`identifier_byte`, `value_bytes`...].
+pub fn split_key(
+    threshold: usize,
+    total: usize,
+    key: &[u8; 32],
+    rng: impl rand_core::RngCore + rand_core::CryptoRng,
+) -> Result<Vec<Vec<u8>>, ShamirError> {
+    Gf256::split_array(threshold, total, key.as_slice(), rng)
+        .map_err(|e| ShamirError::Split(format!("{e:?}")))
+}
+
+/// Returns the minimum number of shares required to reconstruct the secret
+/// for a committee of `n` operators.
+#[must_use]
+pub const fn shamir_threshold(n: usize) -> usize {
+    match n {
+        0 => panic!("No operators"),
+        1 => 1,
+        2 => 2,
+        n => n / 2 + 1,
+    }
+}
+
+/// Reconstruct the secret from `threshold` or more shares.
+pub fn combine_shares(shares: &[Vec<u8>]) -> Result<[u8; 32], ShamirError> {
+    let bytes = Gf256::combine_array(shares)
+        .map_err(|e| ShamirError::Combine(format!("{e:?}")))?;
+    <[u8; 32]>::try_from(bytes.as_slice())
+        .map_err(|_| ShamirError::Combine("unexpected reconstructed key length".to_owned()))
+}

server/crates/arbiter-server/src/db/models.rs

@@ -15,10 +15,11 @@ use restructed::Models;
 pub mod types {
     use chrono::{DateTime, Utc};
     use diesel::{
+        backend::Backend,
         deserialize::{FromSql, FromSqlRow},
         expression::AsExpression,
         serialize::{IsNull, ToSql},
-        sql_types::Integer,
+        sql_types::{Integer, Text},
         sqlite::{Sqlite, SqliteType},
     };
 
@@ -61,7 +62,7 @@ pub mod types {
 
     impl FromSql<Integer, Sqlite> for SqliteTimestamp {
         fn from_sql(
-            mut bytes: <Sqlite as diesel::backend::Backend>::RawValue<'_>,
+            mut bytes: <Sqlite as Backend>::RawValue<'_>,
         ) -> diesel::deserialize::Result<Self> {
             let Some(SqliteType::Long) = bytes.value_type() else {
                 return Err(format!(
@@ -79,10 +80,41 @@ pub mod types {
         }
     }
 
-    #[derive(Debug, FromSqlRow, AsExpression, Clone)]
-    #[diesel(sql_type = Integer)]
-    #[repr(transparent)] // hint compiler to optimize the wrapper struct away
-    pub struct ChainId(pub i32);
+    macro_rules! declare_id {
+        ($name:ident) => {
+            #[derive(Debug, FromSqlRow, AsExpression, Clone, Hash, Copy, PartialEq, Eq)]
+            #[diesel(sql_type = Integer)]
+            #[repr(transparent)] // hint compiler to optimize the wrapper struct away
+            pub struct $name(i32);
+
+            impl $name {
+                pub const fn to_raw(self) -> i32 {
+                    self.0
+                }
+                pub const fn from_raw(raw: i32) -> Self {
+                    Self(raw)
+                }
+            }
+
+            impl FromSql<Integer, Sqlite> for $name {
+                fn from_sql(
+                    bytes: <Sqlite as diesel::backend::Backend>::RawValue<'_>,
+                ) -> diesel::deserialize::Result<Self> {
+                    FromSql::<Integer, Sqlite>::from_sql(bytes).map(Self)
+                }
+            }
+            impl ToSql<Integer, Sqlite> for $name {
+                fn to_sql<'b>(
+                    &'b self,
+                    out: &mut diesel::serialize::Output<'b, '_, Sqlite>,
+                ) -> diesel::serialize::Result {
+                    ToSql::<Integer, Sqlite>::to_sql(&self.0, out)
+                }
+            }
+        };
+    }
+
+    declare_id!(ChainId);
 
     #[expect(
         clippy::cast_sign_loss,
@@ -103,19 +135,47 @@ pub mod types {
         }
     };
 
-    impl FromSql<Integer, Sqlite> for ChainId {
-        fn from_sql(
-            bytes: <Sqlite as diesel::backend::Backend>::RawValue<'_>,
-        ) -> diesel::deserialize::Result<Self> {
-            FromSql::<Integer, Sqlite>::from_sql(bytes).map(Self)
-        }
+    declare_id!(OperatorId);
+    declare_id!(OperatorIdentityId);
+    declare_id!(AeadEncryptedId);
+    declare_id!(RootKeyHistoryId);
+    declare_id!(TlsHistoryId);
+    declare_id!(EvmWalletId);
+    declare_id!(ClientId);
+
+    #[derive(Debug, Clone, PartialEq, Eq, AsExpression, FromSqlRow)]
+    #[diesel(sql_type = Text)]
+    pub enum ProposalStatus {
+        Pending,
+        Approved,
+        Rejected,
     }
-    impl ToSql<Integer, Sqlite> for ChainId {
+
+    impl ToSql<Text, Sqlite> for ProposalStatus {
         fn to_sql<'b>(
             &'b self,
             out: &mut diesel::serialize::Output<'b, '_, Sqlite>,
         ) -> diesel::serialize::Result {
-            ToSql::<Integer, Sqlite>::to_sql(&self.0, out)
+            let s: &str = match self {
+                Self::Pending => "pending",
+                Self::Approved => "approved",
+                Self::Rejected => "rejected",
+            };
+            <str as ToSql<Text, Sqlite>>::to_sql(s, out)
+        }
+    }
+
+    impl FromSql<Text, Sqlite> for ProposalStatus {
+        fn from_sql(
+            bytes: <Sqlite as Backend>::RawValue<'_>,
+        ) -> diesel::deserialize::Result<Self> {
+            let s = <String as FromSql<Text, Sqlite>>::from_sql(bytes)?;
+            match s.as_str() {
+                "pending" => Ok(Self::Pending),
+                "approved" => Ok(Self::Approved),
+                "rejected" => Ok(Self::Rejected),
+                other => Err(format!("Unknown proposal status: {other}").into()),
+            }
         }
     }
 }
@@ -130,12 +190,12 @@ pub use types::*;
 )]
 #[diesel(table_name = aead_encrypted, check_for_backend(Sqlite))]
 pub struct AeadEncrypted {
-    pub id: i32,
+    pub id: AeadEncryptedId,
     pub ciphertext: Vec<u8>,
     pub tag: Vec<u8>,
     pub current_nonce: Vec<u8>,
     pub schema_version: i32,
-    pub associated_root_key_id: i32, // references root_key_history.id
+    pub associated_root_key_id: RootKeyHistoryId,
     pub created_at: SqliteTimestamp,
 }
 
@@ -148,7 +208,7 @@ pub struct AeadEncrypted {
     attributes_with = "deriveless"
 )]
 pub struct RootKeyHistory {
-    pub id: i32,
+    pub id: RootKeyHistoryId,
     pub ciphertext: Vec<u8>,
     pub tag: Vec<u8>,
     pub root_key_encryption_nonce: Vec<u8>,
@@ -166,7 +226,7 @@ pub struct RootKeyHistory {
     attributes_with = "deriveless"
 )]
 pub struct TlsHistory {
-    pub id: i32,
+    pub id: TlsHistoryId,
     pub cert: String,
     pub cert_key: String, // PEM Encoded private key
     pub ca_cert: String,  // PEM Encoded certificate for cert signing
@@ -191,7 +251,7 @@ pub struct ArbiterSettings {
     attributes_with = "deriveless"
 )]
 pub struct EvmWallet {
-    pub id: i32,
+    pub id: EvmWalletId,
     pub address: Vec<u8>,
     pub aead_encrypted_id: i32,
     pub created_at: SqliteTimestamp,
@@ -213,7 +273,7 @@ pub struct EvmWallet {
 )]
 pub struct EvmWalletAccess {
     pub id: i32,
-    pub wallet_id: i32,
+    pub wallet_id: EvmWalletId,
     pub client_id: i32,
     pub created_at: SqliteTimestamp,
 }
@@ -240,7 +300,7 @@ pub struct ProgramClientMetadataHistory {
 #[derive(Models, Queryable, Debug, Insertable, Selectable)]
 #[diesel(table_name = schema::program_client, check_for_backend(Sqlite))]
 pub struct ProgramClient {
-    pub id: i32,
+    pub id: ClientId,
     pub public_key: Vec<u8>,
     pub metadata_id: i32,
     pub created_at: SqliteTimestamp,
@@ -250,12 +310,23 @@ pub struct ProgramClient {
 #[derive(Queryable, Debug)]
 #[diesel(table_name = schema::operator_client, check_for_backend(Sqlite))]
 pub struct OperatorClient {
-    pub id: i32,
+    pub id: OperatorIdentityId,
     pub public_key: Vec<u8>,
     pub created_at: SqliteTimestamp,
     pub updated_at: SqliteTimestamp,
 }
 
+#[derive(Queryable, Debug)]
+#[diesel(table_name = schema::operator, check_for_backend(Sqlite))]
+pub struct Operator {
+    pub id: OperatorId,
+    pub share: Vec<u8>,
+    pub share_nonce: Vec<u8>,
+    pub share_salt: Vec<u8>,
+    pub created_at: SqliteTimestamp,
+    pub updated_at: SqliteTimestamp,
+}
+
 #[derive(Models, Queryable, Debug, Insertable, Selectable)]
 #[diesel(table_name = evm_ether_transfer_limit, check_for_backend(Sqlite))]
 #[view(
@@ -399,8 +470,73 @@ pub struct IntegrityEnvelope {
     pub entity_kind: String,
     pub entity_id: Vec<u8>,
     pub payload_version: i32,
-    pub key_version: i32,
+    pub key_version: RootKeyHistoryId,
     pub mac: Vec<u8>,
     pub signed_at: SqliteTimestamp,
     pub created_at: SqliteTimestamp,
 }
+
+#[derive(Debug, Queryable, Selectable, Identifiable)]
+#[diesel(table_name = schema::proposal, check_for_backend(Sqlite))]
+pub struct Proposal {
+    pub id: i32,
+    pub kind: String,
+    pub payload: Vec<u8>,
+    pub initiator_id: i32,
+    pub created_at: SqliteTimestamp,
+    pub expires_at: SqliteTimestamp,
+    pub status: ProposalStatus,
+}
+
+#[derive(Debug, Insertable)]
+#[diesel(table_name = schema::proposal, check_for_backend(Sqlite))]
+pub struct NewProposal {
+    pub kind: String,
+    pub payload: Vec<u8>,
+    pub initiator_id: i32,
+    // status defaults to 'pending' at the DB layer
+    pub expires_at: SqliteTimestamp,
+}
+
+#[derive(Debug, Queryable, Selectable, Identifiable)]
+#[diesel(table_name = schema::proposal_vote, check_for_backend(Sqlite))]
+pub struct ProposalVote {
+    pub id: i32,
+    pub proposal_id: i32,
+    pub operator_id: i32,
+    pub approve: bool,
+    pub signature: Vec<u8>,
+    pub voted_at: SqliteTimestamp,
+}
+
+#[derive(Debug, Insertable)]
+#[diesel(table_name = schema::proposal_vote, check_for_backend(Sqlite))]
+pub struct NewProposalVote {
+    pub proposal_id: i32,
+    pub operator_id: i32,
+    pub approve: bool,
+    pub signature: Vec<u8>,
+}
+
+
+#[derive(Debug, Insertable)]
+#[diesel(table_name = schema::proposal_result, check_for_backend(Sqlite))]
+pub struct NewProposalResult {
+    pub proposal_id: i32,
+    pub data: Vec<u8>,
+}
+
+#[derive(Debug, Insertable)]
+#[diesel(table_name = schema::recovery_proposal_vote, check_for_backend(Sqlite))]
+pub struct NewRecoveryProposalVote {
+    pub proposal_id: i32,
+    pub recovery_operator_id: i32,
+    pub approve: bool,
+    pub signature: Vec<u8>,
+}
+
+#[derive(Debug, Insertable)]
+#[diesel(table_name = schema::recovery_wakeup_request, check_for_backend(Sqlite))]
+pub struct NewRecoveryWakeupRequest {
+    pub requested_by: i32,
+}

server/crates/arbiter-server/src/db/schema.rs

@@ -152,6 +152,98 @@ diesel::table! {
     }
 }
 
+diesel::table! {
+    operator (id) {
+        id -> Nullable<Integer>,
+        share -> Binary,
+        share_nonce -> Binary,
+        share_salt -> Binary,
+        created_at -> Integer,
+        updated_at -> Integer,
+    }
+}
+
+diesel::table! {
+    operator_identity (id) {
+        id -> Integer,
+        public_key -> Binary,
+        created_at -> Integer,
+        updated_at -> Integer,
+    }
+}
+
+diesel::table! {
+    proposal (id) {
+        id -> Integer,
+        kind -> Text,
+        payload -> Binary,
+        initiator_id -> Integer,
+        created_at -> Integer,
+        expires_at -> Integer,
+        status -> Text,
+    }
+}
+
+diesel::table! {
+    proposal_result (proposal_id) {
+        proposal_id -> Integer,
+        data -> Binary,
+        created_at -> Integer,
+    }
+}
+
+diesel::table! {
+    recovery_operator (id) {
+        id -> Integer,
+        share -> Binary,
+        share_nonce -> Binary,
+        share_salt -> Binary,
+        created_at -> Integer,
+        updated_at -> Integer,
+    }
+}
+
+diesel::table! {
+    recovery_operator_identity (id) {
+        id -> Integer,
+        public_key -> Binary,
+        created_at -> Integer,
+        updated_at -> Integer,
+    }
+}
+
+diesel::table! {
+    recovery_wakeup_request (id) {
+        id -> Integer,
+        requested_by -> Integer,
+        requested_at -> Integer,
+        cancelled_by -> Nullable<Integer>,
+        cancelled_at -> Nullable<Integer>,
+    }
+}
+
+diesel::table! {
+    recovery_proposal_vote (id) {
+        id -> Integer,
+        proposal_id -> Integer,
+        recovery_operator_id -> Integer,
+        approve -> Bool,
+        signature -> Binary,
+        voted_at -> Integer,
+    }
+}
+
+diesel::table! {
+    proposal_vote (id) {
+        id -> Integer,
+        proposal_id -> Integer,
+        operator_id -> Integer,
+        approve -> Bool,
+        signature -> Binary,
+        voted_at -> Integer,
+    }
+}
+
 diesel::table! {
     program_client (id) {
         id -> Integer,
@@ -185,15 +277,6 @@ diesel::table! {
     }
 }
 
-diesel::table! {
-    operator_client (id) {
-        id -> Integer,
-        public_key -> Binary,
-        created_at -> Integer,
-        updated_at -> Integer,
-    }
-}
-
 diesel::joinable!(aead_encrypted -> root_key_history (associated_root_key_id));
 diesel::joinable!(arbiter_settings -> root_key_history (root_key_id));
 diesel::joinable!(arbiter_settings -> tls_history (tls_id));
@@ -212,10 +295,24 @@ diesel::joinable!(evm_transaction_log -> evm_wallet_access (wallet_access_id));
 diesel::joinable!(evm_wallet -> aead_encrypted (aead_encrypted_id));
 diesel::joinable!(evm_wallet_access -> evm_wallet (wallet_id));
 diesel::joinable!(evm_wallet_access -> program_client (client_id));
+diesel::joinable!(operator -> operator_identity (id));
 diesel::joinable!(program_client -> client_metadata (metadata_id));
+diesel::joinable!(proposal -> operator_identity (initiator_id));
+diesel::joinable!(proposal_result -> proposal (proposal_id));
+diesel::joinable!(proposal_vote -> proposal (proposal_id));
+diesel::joinable!(proposal_vote -> operator_identity (operator_id));
+diesel::joinable!(recovery_operator -> recovery_operator_identity (id));
+diesel::joinable!(recovery_proposal_vote -> proposal (proposal_id));
+diesel::joinable!(recovery_proposal_vote -> recovery_operator_identity (recovery_operator_id));
+diesel::joinable!(recovery_wakeup_request -> operator_identity (requested_by));
 
 diesel::allow_tables_to_appear_in_same_query!(
     aead_encrypted,
+    proposal_result,
+    recovery_operator,
+    recovery_operator_identity,
+    recovery_wakeup_request,
+    recovery_proposal_vote,
     arbiter_settings,
     client_metadata,
     client_metadata_history,
@@ -230,8 +327,11 @@ diesel::allow_tables_to_appear_in_same_query!(
     evm_wallet,
     evm_wallet_access,
     integrity_envelope,
+    operator,
+    operator_identity,
     program_client,
+    proposal,
+    proposal_vote,
     root_key_history,
     tls_history,
-    operator_client,
 );

server/crates/arbiter-server/src/evm/mod.rs

@@ -1,34 +1,28 @@
-use diesel_async::{AsyncConnection, RunQueryDsl};
-use kameo::actor::ActorRef;
-
 use crate::{
     actors::vault::Vault,
     crypto::integrity,
     db::{
         self, DatabaseError,
         models::{
-            EvmBasicGrant, EvmEtherTransferGrant, EvmEtherTransferGrantTarget,
-            EvmEtherTransferLimit, EvmTokenTransferGrant, EvmTokenTransferVolumeLimit,
-            EvmWalletAccess, NewEvmBasicGrant, NewEvmTransactionLog, SqliteTimestamp,
+            EvmBasicGrant, EvmWalletAccess, NewEvmBasicGrant, NewEvmTransactionLog, SqliteTimestamp,
         },
         schema::{self, evm_transaction_log},
     },
     evm::policies::{
         CombinedSettings, DatabaseID, EvalContext, EvalViolation, Grant, Policy,
-        SharedGrantSettings, SpecificGrant, SpecificMeaning, VolumeRateLimit,
-        ether_transfer::EtherTransfer, token_transfers::TokenTransfer,
+        SharedGrantSettings, SpecificGrant, SpecificMeaning, ether_transfer::EtherTransfer,
+        token_transfers::TokenTransfer,
     },
 };
 
 use alloy::{
     consensus::TxEip1559,
-    primitives::{Address, TxKind, U256},
+    primitives::{TxKind, U256},
 };
 use chrono::Utc;
-use diesel::{
-    ExpressionMethods as _, OptionalExtension, QueryDsl as _, QueryResult, SelectableHelper,
-    insert_into, sqlite::Sqlite, update,
-};
+use diesel::{ExpressionMethods as _, QueryDsl as _, QueryResult, insert_into, sqlite::Sqlite};
+use diesel_async::{AsyncConnection, RunQueryDsl};
+use kameo::actor::ActorRef;
 
 pub mod abi;
 pub mod safe_signer;
@@ -278,151 +272,6 @@ impl Engine {
         Ok(id)
     }
 
-    pub async fn revoke_grant(
-        &self,
-        basic_grant_id: i32,
-    ) -> Result<(), DatabaseError> {
-        let mut conn = self.db.get().await.map_err(DatabaseError::from)?;
-        let vault = self.vault.clone();
-
-        conn.transaction(async move |conn| {
-            use crate::db::schema::{
-                evm_basic_grant, evm_ether_transfer_grant, evm_ether_transfer_grant_target,
-                evm_ether_transfer_limit, evm_token_transfer_grant,
-                evm_token_transfer_volume_limit,
-            };
-
-            update(evm_basic_grant::table)
-                .filter(evm_basic_grant::id.eq(basic_grant_id))
-                .set(evm_basic_grant::revoked_at.eq(SqliteTimestamp(Utc::now())))
-                .execute(&mut *conn)
-                .await?;
-
-            let basic_grant: EvmBasicGrant = evm_basic_grant::table
-                .filter(evm_basic_grant::id.eq(basic_grant_id))
-                .select(EvmBasicGrant::as_select())
-                .first(&mut *conn)
-                .await?;
-
-            let shared = SharedGrantSettings::try_from_model(basic_grant)?;
-
-            if let Some(ether_grant) = evm_ether_transfer_grant::table
-                .filter(evm_ether_transfer_grant::basic_grant_id.eq(basic_grant_id))
-                .select(EvmEtherTransferGrant::as_select())
-                .first(&mut *conn)
-                .await
-                .optional()?
-            {
-                let target_rows: Vec<EvmEtherTransferGrantTarget> =
-                    evm_ether_transfer_grant_target::table
-                        .filter(evm_ether_transfer_grant_target::grant_id.eq(ether_grant.id))
-                        .select(EvmEtherTransferGrantTarget::as_select())
-                        .load(&mut *conn)
-                        .await?;
-                let targets: Vec<Address> = target_rows
-                    .into_iter()
-                    .filter_map(|target| {
-                        let arr: [u8; 20] = target.address.try_into().ok()?;
-                        Some(Address::from(arr))
-                    })
-                    .collect();
-
-                let limit: EvmEtherTransferLimit = evm_ether_transfer_limit::table
-                    .filter(evm_ether_transfer_limit::id.eq(ether_grant.limit_id))
-                    .select(EvmEtherTransferLimit::as_select())
-                    .first(&mut *conn)
-                    .await?;
-
-                let settings = CombinedSettings {
-                    shared: shared.clone(),
-                    specific: policies::ether_transfer::Settings {
-                        target: targets,
-                        limit: VolumeRateLimit {
-                            max_volume: utils::try_bytes_to_u256(&limit.max_volume).map_err(
-                                |err| {
-                                    diesel::result::Error::DeserializationError(Box::new(err))
-                                },
-                            )?,
-                            window: chrono::Duration::seconds(limit.window_secs.into()),
-                        },
-                    },
-                };
-
-                integrity::sign_entity(&mut *conn, &vault, &settings, basic_grant_id)
-                    .await
-                    .map_err(|_| diesel::result::Error::RollbackTransaction)?;
-
-                return QueryResult::Ok(());
-            }
-
-            if let Some(token_grant) = evm_token_transfer_grant::table
-                .filter(evm_token_transfer_grant::basic_grant_id.eq(basic_grant_id))
-                .select(EvmTokenTransferGrant::as_select())
-                .first(&mut *conn)
-                .await
-                .optional()?
-            {
-                let volume_limit_rows: Vec<EvmTokenTransferVolumeLimit> =
-                    evm_token_transfer_volume_limit::table
-                        .filter(evm_token_transfer_volume_limit::grant_id.eq(token_grant.id))
-                        .select(EvmTokenTransferVolumeLimit::as_select())
-                        .load(&mut *conn)
-                        .await?;
-                let volume_limits: Vec<VolumeRateLimit> = volume_limit_rows
-                    .into_iter()
-                    .map(|row| {
-                        Ok(VolumeRateLimit {
-                            max_volume: utils::try_bytes_to_u256(&row.max_volume).map_err(
-                                |err| {
-                                    diesel::result::Error::DeserializationError(Box::new(err))
-                                },
-                            )?,
-                            window: chrono::Duration::seconds(row.window_secs.into()),
-                        })
-                    })
-                    .collect::<QueryResult<Vec<_>>>()?;
-
-                let target: Option<Address> = match token_grant.receiver {
-                    None => None,
-                    Some(bytes) => {
-                        let arr: [u8; 20] = bytes.try_into().map_err(|_| {
-                            diesel::result::Error::DeserializationError(
-                                "Invalid receiver address length".into(),
-                            )
-                        })?;
-                        Some(Address::from(arr))
-                    }
-                };
-
-                let token_contract: [u8; 20] =
-                    token_grant.token_contract.clone().try_into().map_err(|_| {
-                        diesel::result::Error::DeserializationError(
-                            "Invalid token contract address length".into(),
-                        )
-                    })?;
-
-                let settings = CombinedSettings {
-                    shared,
-                    specific: policies::token_transfers::Settings {
-                        token_contract: Address::from(token_contract),
-                        target,
-                        volume_limits,
-                    },
-                };
-
-                integrity::sign_entity(&mut *conn, &vault, &settings, basic_grant_id)
-                    .await
-                    .map_err(|_| diesel::result::Error::RollbackTransaction)?;
-
-                return QueryResult::Ok(());
-            }
-
-            Err(diesel::result::Error::NotFound)
-        })
-        .await
-        .map_err(DatabaseError::from)
-    }
-
     async fn list_one_kind<Kind: Policy, Y>(
         &self,
         conn: &mut impl AsyncConnection<Backend = Sqlite>,
@@ -502,26 +351,21 @@ impl Engine {
 #[cfg(test)]
 mod tests {
     use alloy::primitives::{Address, Bytes, U256, address};
-    use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
     use chrono::{Duration, Utc};
     use diesel::{SelectableHelper, insert_into};
     use diesel_async::RunQueryDsl;
-    use kameo::{actor::ActorRef, prelude::Spawn};
     use rstest::rstest;
 
-    use crate::actors::{GlobalActors, vault::{Bootstrap, Vault}};
-    use crate::crypto::integrity;
     use crate::db::{
         self, DatabaseConnection,
         models::{
-            EvmBasicGrant, EvmWalletAccess, NewEvmBasicGrant, NewEvmTransactionLog, SqliteTimestamp,
+            EvmBasicGrant, EvmWalletAccess, EvmWalletId, NewEvmBasicGrant, NewEvmTransactionLog,
+            SqliteTimestamp,
         },
         schema::{evm_basic_grant, evm_transaction_log},
     };
-    use crate::evm::policies::ether_transfer::EtherTransfer;
     use crate::evm::policies::{
-        CombinedSettings, EvalContext, EvalViolation, Policy, SharedGrantSettings,
-        TransactionRateLimit, VolumeRateLimit,
+        EvalContext, EvalViolation, SharedGrantSettings, TransactionRateLimit,
     };
 
     use super::check_shared_constraints;
@@ -534,7 +378,7 @@ mod tests {
         EvalContext {
             target: EvmWalletAccess {
                 id: WALLET_ACCESS_ID,
-                wallet_id: 10,
+                wallet_id: EvmWalletId::from_raw(5),
                 client_id: 20,
                 created_at: SqliteTimestamp(Utc::now()),
             },
@@ -553,7 +397,6 @@ mod tests {
             chain: CHAIN_ID,
             valid_from: None,
             valid_until: None,
-            revoked_at: None,
             max_gas_fee_per_gas: None,
             max_priority_fee_per_gas: None,
             rate_limit: None,
@@ -762,115 +605,4 @@ mod tests {
             assert!(violations.is_empty());
         }
     }
-
-    async fn bootstrapped_vault(db: &db::DatabasePool) -> ActorRef<Vault> {
-        let actor = Vault::spawn(
-            Vault::new(db.clone(), GlobalActors::spawn_message_bus())
-                .await
-                .unwrap(),
-        );
-        actor
-            .ask(Bootstrap {
-                seal_key_raw: SafeCell::new(b"integrity-test-seal-key".to_vec()),
-            })
-            .await
-            .unwrap();
-        actor
-    }
-
-    #[tokio::test]
-    async fn revoke_grant_preserves_revoked_integrity() {
-        use crate::db::schema::evm_basic_grant;
-        use diesel::ExpressionMethods as _;
-
-        let db = db::create_test_pool().await;
-        let vault = bootstrapped_vault(&db).await;
-        let engine = super::Engine::new(db.clone(), vault.clone());
-
-        let full_grant = CombinedSettings {
-            shared: SharedGrantSettings {
-                wallet_access_id: WALLET_ACCESS_ID,
-                chain: CHAIN_ID,
-                valid_from: None,
-                valid_until: None,
-                revoked_at: None,
-                max_gas_fee_per_gas: None,
-                max_priority_fee_per_gas: None,
-                rate_limit: None,
-            },
-            specific: super::policies::ether_transfer::Settings {
-                target: vec![RECIPIENT],
-                limit: VolumeRateLimit {
-                    max_volume: U256::from(100u64),
-                    window: Duration::hours(1),
-                },
-            },
-        };
-
-        let grant_id = engine
-            .create_grant::<EtherTransfer>(full_grant)
-            .await
-            .unwrap();
-
-        engine.revoke_grant(grant_id).await.unwrap();
-
-        let mut conn = db.get().await.unwrap();
-        diesel::update(evm_basic_grant::table)
-            .filter(evm_basic_grant::id.eq(grant_id))
-            .set(evm_basic_grant::revoked_at.eq::<Option<SqliteTimestamp>>(None))
-            .execute(&mut conn)
-            .await
-            .unwrap();
-
-        let wallet_access = EvmWalletAccess {
-            id: WALLET_ACCESS_ID,
-            wallet_id: 10,
-            client_id: 20,
-            created_at: SqliteTimestamp(Utc::now()),
-        };
-        let context = EvalContext {
-            target: wallet_access,
-            chain: CHAIN_ID,
-            to: RECIPIENT,
-            value: U256::ONE,
-            calldata: Bytes::new(),
-            max_fee_per_gas: 1,
-            max_priority_fee_per_gas: 1,
-        };
-
-        let grant = EtherTransfer::try_find_grant(
-            &context, &mut conn,
-        )
-        .await
-        .unwrap()
-        .unwrap();
-
-        let result =
-            integrity::verify_entity(&mut conn, &vault, &grant.settings, grant.id).await;
-
-        assert!(matches!(
-            result,
-            Err(integrity::Error::MacMismatch { .. })
-        ));
-    }
-
-    #[test]
-    fn shared_settings_hash_changes_when_revoked_at_changes() {
-        use arbiter_crypto::hashing::Hashable;
-        use sha2::Digest;
-
-        let active = shared_settings();
-        let revoked = SharedGrantSettings {
-            revoked_at: Some(Utc::now()),
-            ..shared_settings()
-        };
-
-        let mut active_hash = sha2::Sha256::new();
-        active.hash(&mut active_hash);
-
-        let mut revoked_hash = sha2::Sha256::new();
-        revoked.hash(&mut revoked_hash);
-
-        assert_ne!(active_hash.finalize(), revoked_hash.finalize());
-    }
 }

server/crates/arbiter-server/src/evm/policies.rs

@@ -144,7 +144,6 @@ pub struct SharedGrantSettings {
 
     pub valid_from: Option<DateTime<Utc>>,
     pub valid_until: Option<DateTime<Utc>>,
-    pub revoked_at: Option<DateTime<Utc>>,
 
     pub max_gas_fee_per_gas: Option<U256>,
     pub max_priority_fee_per_gas: Option<U256>,
@@ -159,7 +158,6 @@ impl SharedGrantSettings {
             chain: model.chain_id.into(),
             valid_from: model.valid_from.map(Into::into),
             valid_until: model.valid_until.map(Into::into),
-            revoked_at: model.revoked_at.map(Into::into),
             max_gas_fee_per_gas: model
                 .max_gas_fee_per_gas
                 .map(|b| utils::try_bytes_to_u256(&b))

server/crates/arbiter-server/src/evm/policies/ether_transfer/mod.rs

@@ -1,5 +1,6 @@
 use super::{DatabaseID, EvalContext, EvalViolation};
 use crate::{
+    crypto::integrity::v1::Integrable,
     db::models::{
         EvmBasicGrant, EvmEtherTransferGrant, EvmEtherTransferGrantTarget, EvmEtherTransferLimit,
         NewEvmEtherTransferLimit, SqliteTimestamp,
@@ -51,12 +52,14 @@ impl From<Meaning> for SpecificMeaning {
 }
 
 // A grant for ether transfers, which can be scoped to specific target addresses and volume limits
-#[derive(Debug, Clone, arbiter_macros::Hashable, arbiter_macros::Integrable)]
-#[integrable(kind = "EtherTransfer")]
+#[derive(Debug, Clone, arbiter_macros::Hashable)]
 pub struct Settings {
     pub target: Vec<Address>,
     pub limit: VolumeRateLimit,
 }
+impl Integrable for Settings {
+    const KIND: &'static str = "EtherTransfer";
+}
 
 impl From<Settings> for SpecificGrant {
     fn from(val: Settings) -> Self {

server/crates/arbiter-server/src/evm/policies/ether_transfer/tests.rs

@@ -3,7 +3,8 @@ use crate::{
     db::{
         self, DatabaseConnection,
         models::{
-            EvmBasicGrant, EvmWalletAccess, NewEvmBasicGrant, NewEvmTransactionLog, SqliteTimestamp,
+            EvmBasicGrant, EvmWalletAccess, EvmWalletId, NewEvmBasicGrant, NewEvmTransactionLog,
+            SqliteTimestamp,
         },
         schema::{evm_basic_grant, evm_transaction_log},
     },
@@ -31,7 +32,7 @@ fn ctx(to: Address, value: U256) -> EvalContext {
     EvalContext {
         target: EvmWalletAccess {
             id: WALLET_ACCESS_ID,
-            wallet_id: 10,
+            wallet_id: EvmWalletId::from_raw(10),
             client_id: 20,
             created_at: SqliteTimestamp(Utc::now()),
         },
@@ -79,7 +80,6 @@ fn shared() -> SharedGrantSettings {
         chain: CHAIN_ID,
         valid_from: None,
         valid_until: None,
-        revoked_at: None,
         max_gas_fee_per_gas: None,
         max_priority_fee_per_gas: None,
         rate_limit: None,

server/crates/arbiter-server/src/evm/policies/token_transfers/mod.rs

@@ -1,5 +1,6 @@
 use super::{DatabaseID, EvalContext, EvalViolation};
 use crate::{
+    crypto::integrity::Integrable,
     db::models::{
         EvmBasicGrant, EvmTokenTransferGrant, EvmTokenTransferVolumeLimit,
         NewEvmTokenTransferGrant, NewEvmTokenTransferLog, NewEvmTokenTransferVolumeLimit,
@@ -62,13 +63,15 @@ impl From<Meaning> for SpecificMeaning {
 }
 
 // A grant for token transfers, which can be scoped to specific target addresses and volume limits
-#[derive(Debug, Clone, arbiter_macros::Hashable, arbiter_macros::Integrable)]
-#[integrable(kind = "TokenTransfer")]
+#[derive(Debug, Clone, arbiter_macros::Hashable)]
 pub struct Settings {
     pub token_contract: Address,
     pub target: Option<Address>,
     pub volume_limits: Vec<VolumeRateLimit>,
 }
+impl Integrable for Settings {
+    const KIND: &'static str = "TokenTransfer";
+}
 
 impl From<Settings> for SpecificGrant {
     fn from(val: Settings) -> Self {

server/crates/arbiter-server/src/evm/policies/token_transfers/tests.rs

@@ -2,7 +2,7 @@ use super::{Settings, TokenTransfer};
 use crate::{
     db::{
         self, DatabaseConnection,
-        models::{EvmBasicGrant, EvmWalletAccess, NewEvmBasicGrant, SqliteTimestamp},
+        models::{EvmBasicGrant, EvmWalletAccess, EvmWalletId, NewEvmBasicGrant, SqliteTimestamp},
         schema::evm_basic_grant,
     },
     evm::{
@@ -45,7 +45,7 @@ fn ctx(to: Address, calldata: Bytes) -> EvalContext {
     EvalContext {
         target: EvmWalletAccess {
             id: WALLET_ACCESS_ID,
-            wallet_id: 10,
+            wallet_id: EvmWalletId::from_raw(10),
             client_id: 20,
             created_at: SqliteTimestamp(Utc::now()),
         },
@@ -98,7 +98,6 @@ fn shared() -> SharedGrantSettings {
         chain: CHAIN_ID,
         valid_from: None,
         valid_until: None,
-        revoked_at: None,
         max_gas_fee_per_gas: None,
         max_priority_fee_per_gas: None,
         rate_limit: None,

server/crates/arbiter-server/src/evm/safe_signer.rs

@@ -44,7 +44,7 @@ impl std::fmt::Debug for SafeSigner {
 /// Returns the protected key bytes and the derived Ethereum address.
 pub fn generate(rng: &mut impl rand::Rng) -> (SafeCell<[u8; 32]>, Address) {
     loop {
-        let mut cell = SafeCell::new_inline(|w: &mut [u8; 32]| {
+        let mut cell = SafeCell::new_inline_default(|w: &mut [u8; 32]| {
             rng.fill_bytes(w);
         });
 

server/crates/arbiter-server/src/grpc/client/auth.rs

@@ -200,7 +200,7 @@ impl Convert for auth::Outbound {
                         .timestamp
                         .timestamp_nanos_opt()
                         .expect("timestamp within range")
-                        .cast_unsigned(),
+                        as u64,
                     random: challenge.nonce.to_vec(),
                 })
             }

server/crates/arbiter-server/src/grpc/operator.rs

@@ -19,6 +19,7 @@ use tracing::{error, info, warn};
 
 mod auth;
 mod evm;
+mod governance;
 mod inbound;
 mod outbound;
 mod sdk_client;
@@ -115,6 +116,7 @@ async fn dispatch_inner(
             warn!("Unsupported post-auth operator auth request");
             Err(Status::invalid_argument("Unsupported operator request"))
         }
+        OperatorRequestPayload::Governance(req) => governance::dispatch(actor, req).await,
     }
 }
 

server/crates/arbiter-server/src/grpc/operator/auth.rs

@@ -80,7 +80,7 @@ impl Sender<Result<auth::Outbound, auth::Error>> for AuthTransportAdapter<'_> {
                         .timestamp
                         .timestamp_nanos_opt()
                         .expect("timestamp within range")
-                        .cast_unsigned(),
+                        as u64,
                     random: challenge.nonce.to_vec(),
                 })
             }

server/crates/arbiter-server/src/grpc/operator/evm.rs

@@ -90,7 +90,7 @@ async fn handle_wallet_list(
                 .into_iter()
                 .map(|(id, address)| WalletEntry {
                     address: address.to_vec(),
-                    id,
+                    id: id.to_raw(),
                 })
                 .collect(),
         }),

server/crates/arbiter-server/src/grpc/operator/governance.rs

@@ -0,0 +1,155 @@
+use crate::{
+    actors::proposal_manager::{Error as ProposalError, ProposalKind, VoteOutcome},
+    peers::operator::{
+        OperatorSession,
+        session::handlers::{HandleCastVote, HandleCreateProposal, HandleQueryPending},
+    },
+};
+use arbiter_proto::proto::operator::{
+    governance::{
+        self as proto_gov, CreateProposalRequest, QueryPendingRequest, QueryPendingResponse,
+        VoteOutcome as ProtoVoteOutcome, create_proposal_request::Kind as ProtoKind,
+        request::Payload as GovRequestPayload, response::Payload as GovResponsePayload,
+    },
+    operator_response::Payload as OperatorResponsePayload,
+};
+use kameo::actor::ActorRef;
+use tonic::Status;
+use tracing::warn;
+
+const fn wrap(payload: GovResponsePayload) -> OperatorResponsePayload {
+    OperatorResponsePayload::Governance(proto_gov::Response {
+        payload: Some(payload),
+    })
+}
+
+pub(super) async fn dispatch(
+    actor: &ActorRef<OperatorSession>,
+    req: proto_gov::Request,
+) -> Result<Option<OperatorResponsePayload>, Status> {
+    let Some(payload) = req.payload else {
+        return Err(Status::invalid_argument(
+            "Missing governance request payload",
+        ));
+    };
+
+    match payload {
+        GovRequestPayload::Create(req) => handle_create(actor, req).await,
+        GovRequestPayload::Vote(req) => handle_vote(actor, req).await,
+        GovRequestPayload::Query(QueryPendingRequest {}) => handle_query(actor).await,
+    }
+}
+
+async fn handle_create(
+    actor: &ActorRef<OperatorSession>,
+    req: CreateProposalRequest,
+) -> Result<Option<OperatorResponsePayload>, Status> {
+    let kind = match req.kind {
+        Some(ProtoKind::ApproveSdkClient(p)) => ProposalKind::ApproveSdkClient {
+            client_id: p.client_id,
+        },
+        Some(ProtoKind::GrantWalletAccess(p)) => ProposalKind::GrantWalletAccess {
+            wallet_id: p.wallet_id,
+            client_id: p.client_id,
+        },
+        Some(ProtoKind::ApproveServerUpdate(_)) => ProposalKind::ApproveServerUpdate,
+        Some(ProtoKind::ReplaceOperator(p)) => ProposalKind::ReplaceOperator {
+            old_operator_id: p.old_operator_id,
+            new_pubkey: p.new_pubkey,
+        },
+        Some(ProtoKind::UpdateShamirParameters(p)) => ProposalKind::UpdateShamirParameters {
+            #[expect(
+                clippy::cast_possible_truncation,
+                clippy::as_conversions,
+                reason = "new_n is always a small operator count"
+            )]
+            new_n: p.new_n as u8,
+        },
+        Some(ProtoKind::ApprovePersistentGrant(p)) => {
+            use prost::Message as _;
+            ProposalKind::ApprovePersistentGrant {
+                payload_bytes: p.encode_to_vec(),
+            }
+        }
+        Some(ProtoKind::ApproveOneOffTransaction(p)) => {
+            use prost::Message as _;
+            ProposalKind::ApproveOneOffTransaction {
+                payload_bytes: p.encode_to_vec(),
+            }
+        }
+        None => return Err(Status::invalid_argument("Missing proposal kind")),
+    };
+    let ttl_secs = req.ttl_secs.map(i64::from);
+
+    let proposal_id = actor
+        .ask(HandleCreateProposal { kind, ttl_secs })
+        .await
+        .map_err(|e| {
+            warn!(?e, "create_proposal failed");
+            Status::internal("Failed to create proposal")
+        })?;
+
+    Ok(Some(wrap(GovResponsePayload::Created(
+        proto_gov::CreateProposalResponse { proposal_id },
+    ))))
+}
+
+async fn handle_vote(
+    actor: &ActorRef<OperatorSession>,
+    req: proto_gov::CastVoteRequest,
+) -> Result<Option<OperatorResponsePayload>, Status> {
+    let result = actor
+        .ask(HandleCastVote {
+            proposal_id: req.proposal_id,
+            approve: req.approve,
+            signature: req.signature,
+        })
+        .await;
+
+    let outcome = match result {
+        Ok(VoteOutcome::Pending) => ProtoVoteOutcome::Pending,
+        Ok(VoteOutcome::QuorumApproved) => ProtoVoteOutcome::Approved,
+        Ok(VoteOutcome::QuorumRejected) => ProtoVoteOutcome::Rejected,
+        Err(kameo::error::SendError::HandlerError(ProposalError::AlreadyVoted)) => {
+            return Err(Status::invalid_argument("Already voted on this proposal"));
+        }
+        Err(kameo::error::SendError::HandlerError(ProposalError::InvalidSignature)) => {
+            return Err(Status::invalid_argument("Invalid vote signature"));
+        }
+        Err(kameo::error::SendError::HandlerError(ProposalError::ProposalNotFound)) => {
+            return Err(Status::not_found("Proposal not found"));
+        }
+        Err(e) => {
+            warn!(?e, "cast_vote failed");
+            return Err(Status::internal("Failed to cast vote"));
+        }
+    };
+
+    Ok(Some(wrap(GovResponsePayload::Voted(
+        proto_gov::VoteResponse {
+            outcome: outcome.into(),
+        },
+    ))))
+}
+
+async fn handle_query(
+    actor: &ActorRef<OperatorSession>,
+) -> Result<Option<OperatorResponsePayload>, Status> {
+    let summaries = actor.ask(HandleQueryPending {}).await.unwrap_or_default();
+
+    let proposals = summaries
+        .into_iter()
+        .map(|s| proto_gov::ProposalSummary {
+            id: s.id,
+            kind: s.kind,
+            initiator_id: s.initiator_id,
+            expires_at: s.expires_at.0.timestamp(),
+            approve_count: s.approve_count,
+            reject_count: s.reject_count,
+        })
+        .collect();
+
+    Ok(Some(wrap(GovResponsePayload::Pending(
+        QueryPendingResponse { proposals },
+    ))))
+}

server/crates/arbiter-server/src/grpc/operator/inbound.rs

@@ -1,11 +1,10 @@
 use crate::{
-    db::models::{CoreEvmWalletAccess, NewEvmWalletAccess},
+    db::models::{CoreEvmWalletAccess, EvmWalletId, NewEvmWalletAccess},
     evm::policies::{
         SharedGrantSettings, SpecificGrant, TransactionRateLimit, VolumeRateLimit, ether_transfer,
         token_transfers,
     },
-    grpc::Convert,
-    grpc::TryConvert,
+    grpc::{Convert, TryConvert},
 };
 use arbiter_proto::{
     proto::evm::{
@@ -87,7 +86,6 @@ impl TryConvert for ProtoSharedSettings {
                 .valid_until
                 .map(ProtoTimestamp::try_convert)
                 .transpose()?,
-            revoked_at: None,
             max_gas_fee_per_gas: self
                 .max_gas_fee_per_gas
                 .as_deref()
@@ -151,7 +149,7 @@ impl Convert for WalletAccess {
 
     fn convert(self) -> Self::Output {
         NewEvmWalletAccess {
-            wallet_id: self.wallet_id,
+            wallet_id: EvmWalletId::from_raw(self.wallet_id),
             client_id: self.sdk_client_id,
         }
     }
@@ -166,7 +164,7 @@ impl TryConvert for SdkClientWalletAccess {
             return Err(Status::invalid_argument("Missing wallet access entry"));
         };
         Ok(CoreEvmWalletAccess {
-            wallet_id: access.wallet_id,
+            wallet_id: EvmWalletId::from_raw(access.wallet_id),
             client_id: access.sdk_client_id,
             id: self.id,
         })

server/crates/arbiter-server/src/grpc/operator/outbound.rs

@@ -103,7 +103,7 @@ impl Convert for EvmWalletAccess {
         Self::Output {
             id: self.id,
             access: Some(WalletAccess {
-                wallet_id: self.wallet_id,
+                wallet_id: self.wallet_id.to_raw(),
                 sdk_client_id: self.client_id,
             }),
         }

server/crates/arbiter-server/src/grpc/operator/sdk_client.rs

@@ -2,7 +2,7 @@ use crate::{
     db::models::NewEvmWalletAccess,
     grpc::Convert,
     peers::operator::{
-        OutOfBand, OperatorSession,
+        OperatorSession, OutOfBand,
         session::handlers::{
             HandleGrantEvmWalletAccess, HandleListWalletAccess, HandleNewClientApprove,
             HandleRevokeEvmWalletAccess, HandleSdkClientList,
@@ -11,8 +11,8 @@ use crate::{
 };
 use arbiter_crypto::authn;
 use arbiter_proto::proto::{
-    shared::ClientInfo as ProtoClientMetadata,
     operator::{
+        operator_response::Payload as OperatorResponsePayload,
         sdk_client::{
             self as proto_sdk_client, ConnectionCancel as ProtoSdkClientConnectionCancel,
             ConnectionRequest as ProtoSdkClientConnectionRequest,
@@ -24,8 +24,8 @@ use arbiter_proto::proto::{
             request::Payload as SdkClientRequestPayload,
             response::Payload as SdkClientResponsePayload,
         },
-        operator_response::Payload as OperatorResponsePayload,
     },
+    shared::ClientInfo as ProtoClientMetadata,
 };
 
 use kameo::actor::ActorRef;
@@ -115,7 +115,7 @@ async fn handle_list(
             clients: clients
                 .into_iter()
                 .map(|(client, metadata)| ProtoSdkClientEntry {
-                    id: client.id,
+                    id: client.id.to_raw(),
                     pubkey: client.public_key.clone(),
                     info: Some(ProtoClientMetadata {
                         name: metadata.name,

server/crates/arbiter-server/src/grpc/operator/vault.rs

@@ -1,16 +1,24 @@
 use crate::{
     actors::vault::VaultState,
-    peers::operator::{OperatorSession, session::handlers::HandleQueryVaultState},
+    peers::operator::{
+        OperatorSession,
+        session::handlers::{
+            HandleContributeRecoveryRekeyPassphrase, HandleContributeRekeyPassphrase,
+            HandleQueryVaultState,
+        },
+    },
 };
 use arbiter_proto::{
-    proto::shared::VaultState as ProtoVaultState,
     proto::operator::{
         operator_response::Payload as OperatorResponsePayload,
         vault::{
-            self as proto_vault, request::Payload as VaultRequestPayload,
+            self as proto_vault,
+            rekey::{self as proto_rekey, RekeyResult as ProtoRekeyResult},
+            request::Payload as VaultRequestPayload,
             response::Payload as VaultResponsePayload,
         },
     },
+    proto::shared::VaultState as ProtoVaultState,
 };
 
 use kameo::actor::ActorRef;
@@ -33,6 +41,7 @@ pub(super) async fn dispatch(
 
     match payload {
         VaultRequestPayload::QueryState(()) => handle_query_vault_state(actor).await,
+        VaultRequestPayload::Rekey(req) => handle_rekey(actor, req).await,
         VaultRequestPayload::Unseal(_) | VaultRequestPayload::Bootstrap(_) => {
             Err(Status::permission_denied(
                 "Vault is already unsealed; unseal/bootstrap not permitted in session",
@@ -41,6 +50,51 @@ pub(super) async fn dispatch(
     }
 }
 
+async fn handle_rekey(
+    actor: &ActorRef<OperatorSession>,
+    req: proto_rekey::Request,
+) -> Result<Option<OperatorResponsePayload>, Status> {
+    use arbiter_proto::proto::operator::vault::rekey::request::Payload as RekeyPayload;
+
+    let payload = req
+        .payload
+        .ok_or_else(|| Status::invalid_argument("Missing rekey payload"))?;
+
+    let done: bool = match payload {
+        RekeyPayload::ContributePassphrase(cp) => actor
+            .ask(HandleContributeRekeyPassphrase {
+                passphrase: cp.passphrase,
+            })
+            .await
+            .map_err(|e| {
+                warn!(?e, "rekey passphrase contribution failed");
+                Status::internal("Rekey contribution failed")
+            })?,
+        RekeyPayload::ContributeRecoveryPassphrase(crp) => actor
+            .ask(HandleContributeRecoveryRekeyPassphrase {
+                recovery_operator_id: crp.recovery_operator_id,
+                passphrase: crp.passphrase,
+            })
+            .await
+            .map_err(|e| {
+                warn!(?e, "rekey recovery passphrase contribution failed");
+                Status::internal("Rekey recovery contribution failed")
+            })?,
+    };
+
+    let proto_result = if done {
+        ProtoRekeyResult::Success
+    } else {
+        ProtoRekeyResult::AwaitingContributions
+    };
+
+    Ok(Some(wrap_vault_response(VaultResponsePayload::Rekey(
+        proto_rekey::Response {
+            result: proto_result.into(),
+        },
+    ))))
+}
+
 async fn handle_query_vault_state(
     actor: &ActorRef<OperatorSession>,
 ) -> Result<Option<OperatorResponsePayload>, Status> {

server/crates/arbiter-server/src/grpc/operator/vault_gate/inbound.rs

@@ -1,14 +1,17 @@
 use crate::{
     grpc::{Convert, TryConvert},
     peers::operator::vault_gate::{
-        self as vault_gate, HandleBootstrapEncryptedKey, HandleHandshake, HandleUnsealEncryptedKey,
+        self as vault_gate, HandleBootstrapEncryptedKey, HandleContributeBootstrapPassphrase,
+        HandleContributeRecoveryBootstrapPassphrase, HandleContributeRecoveryUnsealPassphrase,
+        HandleContributeUnsealPassphrase, HandleDeclareCommittee, HandleHandshake,
+        HandleUnsealEncryptedKey,
     },
 };
 use arbiter_proto::proto::operator::{
     operator_request::Payload as OperatorRequestPayload,
     vault::{
         self as proto_vault,
-        bootstrap::{self as proto_bootstrap},
+        bootstrap::{self as proto_bootstrap, request::Payload as BootstrapRequestPayload},
         request::Payload as VaultRequestPayload,
         unseal::{self as proto_unseal, request::Payload as UnsealRequestPayload},
     },
@@ -50,6 +53,9 @@ impl TryConvert for VaultRequestPayload {
             Self::QueryState(()) => Ok(vault_gate::Inbound::HandleVaultState),
             Self::Unseal(req) => req.try_convert(),
             Self::Bootstrap(req) => req.try_convert(),
+            Self::Rekey(_) => Err(Status::permission_denied(
+                "Rekey requires an authenticated session",
+            )),
         }
     }
 }
@@ -73,6 +79,21 @@ impl TryConvert for UnsealRequestPayload {
         match self {
             Self::Start(start) => start.try_convert(),
             Self::EncryptedKey(key) => Ok(key.convert()),
+            Self::ContributePassphrase(cp) => Ok(
+                vault_gate::Inbound::HandleContributeUnsealPassphrase(
+                    HandleContributeUnsealPassphrase {
+                        passphrase: cp.passphrase,
+                    },
+                ),
+            ),
+            Self::ContributeRecoveryPassphrase(crp) => Ok(
+                vault_gate::Inbound::HandleContributeRecoveryUnsealPassphrase(
+                    HandleContributeRecoveryUnsealPassphrase {
+                        recovery_operator_id: crp.recovery_operator_id,
+                        passphrase: crp.passphrase,
+                    },
+                ),
+            ),
         }
     }
 }
@@ -107,12 +128,44 @@ impl TryConvert for proto_bootstrap::Request {
     type Error = Status;
 
     fn try_convert(self) -> Result<vault_gate::Inbound, Status> {
-        self.encrypted_key
-            .ok_or_else(|| Status::invalid_argument("Missing bootstrap encrypted key"))?
+        self.payload
+            .ok_or_else(|| Status::invalid_argument("Missing bootstrap payload"))?
             .try_convert()
     }
 }
 
+impl TryConvert for BootstrapRequestPayload {
+    type Output = vault_gate::Inbound;
+    type Error = Status;
+
+    fn try_convert(self) -> Result<vault_gate::Inbound, Status> {
+        match self {
+            Self::EncryptedKey(key) => key.try_convert(),
+            Self::DeclareCommittee(dc) => Ok(
+                vault_gate::Inbound::HandleDeclareCommittee(HandleDeclareCommittee {
+                    count: dc.count as usize,
+                    recovery_count: dc.recovery_count as usize,
+                }),
+            ),
+            Self::ContributePassphrase(cp) => Ok(
+                vault_gate::Inbound::HandleContributeBootstrapPassphrase(
+                    HandleContributeBootstrapPassphrase {
+                        passphrase: cp.passphrase,
+                    },
+                ),
+            ),
+            Self::ContributeRecoveryPassphrase(crp) => Ok(
+                vault_gate::Inbound::HandleContributeRecoveryBootstrapPassphrase(
+                    HandleContributeRecoveryBootstrapPassphrase {
+                        recovery_operator_id: crp.recovery_operator_id,
+                        passphrase: crp.passphrase,
+                    },
+                ),
+            ),
+        }
+    }
+}
+
 impl TryConvert for proto_bootstrap::BootstrapEncryptedKey {
     type Output = vault_gate::Inbound;
     type Error = Status;

server/crates/arbiter-server/src/grpc/operator/vault_gate/outbound.rs

@@ -4,7 +4,6 @@ use crate::{
     peers::operator::vault_gate::{self as vault_gate},
 };
 use arbiter_proto::proto::{
-    shared::VaultState as ProtoVaultState,
     operator::{
         operator_response::Payload as OperatorResponsePayload,
         vault::{
@@ -17,6 +16,7 @@ use arbiter_proto::proto::{
             },
         },
     },
+    shared::VaultState as ProtoVaultState,
 };
 
 use tonic::Status;
@@ -110,6 +110,68 @@ impl TryConvert for vault_gate::Outbound {
                 };
                 Ok(wrap_bootstrap_response(proto_result))
             }
+            Self::HandleDeclareCommittee(result) => {
+                let proto_result = match result {
+                    Ok(()) => ProtoBootstrapResult::Success,
+                    Err(err) => {
+                        warn!(?err, "declare committee failed");
+                        return Err(Status::internal("Failed to declare committee"));
+                    }
+                };
+                Ok(wrap_bootstrap_response(proto_result))
+            }
+            Self::HandleContributeBootstrapPassphrase(result) => {
+                let proto_result = match result {
+                    Ok(true) => ProtoBootstrapResult::Success,
+                    Ok(false) => ProtoBootstrapResult::AwaitingContributions,
+                    Err(err) => {
+                        warn!(?err, "contribute bootstrap passphrase failed");
+                        return Err(Status::internal("Failed to contribute bootstrap passphrase"));
+                    }
+                };
+                Ok(wrap_bootstrap_response(proto_result))
+            }
+            Self::HandleContributeRecoveryBootstrapPassphrase(result) => {
+                let proto_result = match result {
+                    Ok(true) => ProtoBootstrapResult::Success,
+                    Ok(false) => ProtoBootstrapResult::AwaitingContributions,
+                    Err(err) => {
+                        warn!(?err, "contribute recovery bootstrap passphrase failed");
+                        return Err(Status::internal(
+                            "Failed to contribute recovery bootstrap passphrase",
+                        ));
+                    }
+                };
+                Ok(wrap_bootstrap_response(proto_result))
+            }
+            Self::HandleContributeUnsealPassphrase(result) => {
+                let proto_result = match result {
+                    Ok(true) => ProtoUnsealResult::Success,
+                    Ok(false) => ProtoUnsealResult::AwaitingContributions,
+                    Err(err) => {
+                        warn!(?err, "contribute unseal passphrase failed");
+                        return Err(Status::internal("Failed to contribute unseal passphrase"));
+                    }
+                };
+                Ok(wrap_unseal_response(UnsealResponsePayload::Result(
+                    proto_result.into(),
+                )))
+            }
+            Self::HandleContributeRecoveryUnsealPassphrase(result) => {
+                let proto_result = match result {
+                    Ok(true) => ProtoUnsealResult::Success,
+                    Ok(false) => ProtoUnsealResult::AwaitingContributions,
+                    Err(err) => {
+                        warn!(?err, "contribute recovery unseal passphrase failed");
+                        return Err(Status::internal(
+                            "Failed to contribute recovery unseal passphrase",
+                        ));
+                    }
+                };
+                Ok(wrap_unseal_response(UnsealResponsePayload::Result(
+                    proto_result.into(),
+                )))
+            }
         }
     }
 }

server/crates/arbiter-server/src/peers/client/auth.rs

@@ -12,7 +12,7 @@ use crate::{
         schema::program_client,
     },
 };
-use arbiter_crypto::authn::{self, AuthChallenge, CLIENT_CONTEXT};
+use arbiter_crypto::authn::{self, AuthChallenge, SigningContext};
 use arbiter_proto::{
     ClientMetadata,
     transport::{Bi, expect_message},
@@ -306,7 +306,7 @@ where
         Error::Transport
     })?;
 
-    if !pubkey.verify(&challenge, CLIENT_CONTEXT, &signature) {
+    if !pubkey.verify(&challenge, SigningContext::Client, &signature) {
         error!("Challenge solution verification failed");
         return Err(Error::InvalidChallengeSolution);
     }

server/crates/arbiter-server/src/peers/client/mod.rs

@@ -1,5 +1,5 @@
 use crate::{
-    actors::GlobalActors, db, peers::client::session::ClientSession,
+    actors::GlobalActors, crypto::integrity::Integrable, db, peers::client::session::ClientSession,
 };
 use arbiter_crypto::authn;
 use arbiter_macros::Hashable;
@@ -14,12 +14,15 @@ pub struct ClientProfile {
     pub metadata: ClientMetadata,
 }
 
-#[derive(Hashable, arbiter_macros::Integrable)]
-#[integrable(kind = "client_credentials")]
+#[derive(Hashable)]
 pub struct ClientCredentials {
     pub pubkey: authn::PublicKey,
 }
 
+impl Integrable for ClientCredentials {
+    const KIND: &'static str = "client_credentials";
+}
+
 pub struct ClientConnection {
     pub(crate) db: db::DatabasePool,
     pub(crate) actors: GlobalActors,

server/crates/arbiter-server/src/peers/operator/auth/state.rs

@@ -4,29 +4,29 @@ use super::{
 };
 use crate::{
     actors::bootstrap::ConsumeToken,
-    db::{DatabasePool, schema::operator_client},
+    db::{DatabasePool, schema::operator_identity},
     peers::operator::auth::Outbound,
 };
-use arbiter_crypto::authn::{self, AuthChallenge, OPERATOR_CONTEXT};
+use arbiter_crypto::authn::{self, AuthChallenge, SigningContext};
 use arbiter_proto::transport::Bi;
 
 use diesel::{ExpressionMethods as _, OptionalExtension as _, QueryDsl};
 use diesel_async::RunQueryDsl;
 use tracing::error;
 
-pub(super) struct ChallengeRequest {
-    pub(super) pubkey: authn::PublicKey,
-    pub(super) bootstrap_token: Option<String>,
+pub(crate) struct ChallengeRequest {
+    pub(crate) pubkey: authn::PublicKey,
+    pub(crate) bootstrap_token: Option<String>,
 }
 
 pub struct ChallengeContext {
-    pub(super) challenge: AuthChallenge,
-    pub(super) pubkey: authn::PublicKey,
-    pub(super) bootstrap_token: Option<String>,
+    pub challenge: AuthChallenge,
+    pub pubkey: authn::PublicKey,
+    pub bootstrap_token: Option<String>,
 }
 
-pub(super) struct ChallengeSolution {
-    pub(super) solution: Vec<u8>,
+pub(crate) struct ChallengeSolution {
+    pub(crate) solution: Vec<u8>,
 }
 
 smlang::statemachine!(
@@ -44,9 +44,9 @@ async fn get_client_id(db: &DatabasePool, pubkey: &authn::PublicKey) -> Result<O
         Error::internal("Database unavailable")
     })?;
 
-    operator_client::table
-        .filter(operator_client::public_key.eq(pubkey.to_bytes()))
-        .select(operator_client::id)
+    operator_identity::table
+        .filter(operator_identity::public_key.eq(pubkey.to_bytes()))
+        .select(operator_identity::id)
         .first::<i32>(&mut conn)
         .await
         .optional()
@@ -63,9 +63,9 @@ async fn register_key(db: &DatabasePool, pubkey: &authn::PublicKey) -> Result<i3
         Error::internal("Database unavailable")
     })?;
 
-    let id: i32 = diesel::insert_into(operator_client::table)
-        .values((operator_client::public_key.eq(pubkey_bytes),))
-        .returning(operator_client::id)
+    let id: i32 = diesel::insert_into(operator_identity::table)
+        .values((operator_identity::public_key.eq(pubkey_bytes),))
+        .returning(operator_identity::id)
         .get_result(&mut conn)
         .await
         .map_err(|e| {
@@ -141,7 +141,7 @@ where
             Error::InvalidChallengeSolution
         })?;
 
-        let valid = pubkey.verify(challenge, OPERATOR_CONTEXT, &signature);
+        let valid = pubkey.verify(challenge, SigningContext::Operator, &signature);
 
         if !valid {
             self.transport

server/crates/arbiter-server/src/peers/operator/mod.rs

@@ -3,7 +3,7 @@ use crate::{
         GlobalActors,
         vault::{GetState, Vault},
     },
-    crypto::integrity::{self, AttestationStatus},
+    crypto::integrity::{self, AttestationStatus, Integrable},
     db::{DatabaseError, DatabasePool},
     peers::client::ClientProfile,
 };
@@ -23,13 +23,16 @@ pub mod auth;
 pub mod session;
 pub mod vault_gate;
 
-#[derive(Debug, Clone, Hashable, arbiter_macros::Integrable)]
-#[integrable(kind = "operator_credentials")]
+#[derive(Debug, Clone, Hashable)]
 pub struct Credentials {
     pub id: i32,
     pub pubkey: authn::PublicKey,
 }
 
+impl Integrable for Credentials {
+    const KIND: &'static str = "operator_credentials";
+}
+
 // Messages, sent by operator to connection client without having a request
 #[derive(Debug)]
 pub enum OutOfBand {
@@ -177,6 +180,7 @@ where
 
     Ok(OperatorSession::spawn(OperatorSession::new(
         props.clone(),
+        creds.clone(),
         oob_sender,
     )))
 }

server/crates/arbiter-server/src/peers/operator/session/handlers.rs

@@ -1,12 +1,16 @@
 use super::{Error, OperatorSession};
 use crate::{
-    actors::evm::{
-        ClientSignTransaction, Generate, ListWallets, OperatorCreateGrant, OperatorListGrants,
-        SignTransactionError as EvmSignError,
+    actors::{
+        evm::{
+            ClientSignTransaction, Generate, ListWallets, OperatorCreateGrant, OperatorDeleteGrant,
+            OperatorListGrants, SignTransactionError as EvmSignError,
+        },
+        flow_coordinator::client_connect_approval::ClientApprovalAnswer,
+        vault::VaultState,
+    },
+    db::models::{
+        EvmWalletAccess, EvmWalletId, NewEvmWalletAccess, ProgramClient, ProgramClientMetadata,
     },
-    actors::flow_coordinator::client_connect_approval::ClientApprovalAnswer,
-    actors::vault::VaultState,
-    db::models::{EvmWalletAccess, NewEvmWalletAccess, ProgramClient, ProgramClientMetadata},
     evm::policies::{Grant, SpecificGrant},
 };
 use arbiter_crypto::authn;
@@ -70,7 +74,9 @@ impl OperatorSession {
     }
 
     #[message]
-    pub(crate) async fn handle_evm_wallet_list(&mut self) -> Result<Vec<(i32, Address)>, Error> {
+    pub(crate) async fn handle_evm_wallet_list(
+        &mut self,
+    ) -> Result<Vec<(EvmWalletId, Address)>, Error> {
         match self.props.actors.evm.ask(ListWallets {}).await {
             Ok(wallets) => Ok(wallets),
             Err(err) => {
@@ -116,22 +122,23 @@ impl OperatorSession {
     }
 
     #[message]
-    pub(crate) fn handle_grant_delete(&mut self, grant_id: i32) -> Result<(), GrantMutationError> {
-        // match self
-        //     .props
-        //     .actors
-        //     .evm
-        //     .ask(OperatorDeleteGrant { grant_id })
-        //     .await
-        // {
-        //     Ok(()) => Ok(()),
-        //     Err(err) => {
-        //         error!(?err, "EVM grant delete failed");
-        //         Err(GrantMutationError::Internal)
-        //     }
-        // }
-        let _ = grant_id;
-        todo!()
+    pub(crate) async fn handle_grant_delete(
+        &mut self,
+        grant_id: i32,
+    ) -> Result<(), GrantMutationError> {
+        match self
+            .props
+            .actors
+            .evm
+            .ask(OperatorDeleteGrant { grant_id })
+            .await
+        {
+            Ok(()) => Ok(()),
+            Err(err) => {
+                error!(?err, "EVM grant delete failed");
+                Err(GrantMutationError::Internal)
+            }
+        }
     }
 
     #[message]
@@ -211,8 +218,9 @@ impl OperatorSession {
     pub(crate) async fn handle_list_wallet_access(
         &mut self,
     ) -> Result<Vec<EvmWalletAccess>, Error> {
+        use crate::db::schema::evm_wallet_access;
         let mut conn = self.props.db.get().await?;
-        let access_entries = crate::db::schema::evm_wallet_access::table
+        let access_entries = evm_wallet_access::table
             .select(EvmWalletAccess::as_select())
             .load::<_>(&mut conn)
             .await?;
@@ -271,3 +279,102 @@ impl OperatorSession {
         Ok(clients)
     }
 }
+
+#[messages]
+impl OperatorSession {
+    #[message]
+    pub(crate) async fn handle_create_proposal(
+        &mut self,
+        kind: crate::actors::proposal_manager::ProposalKind,
+        ttl_secs: Option<i64>,
+    ) -> Result<i32, Error> {
+        use crate::actors::proposal_manager::CreateProposal;
+        let initiator_id = self.credentials.id;
+        self.props
+            .actors
+            .proposal_manager
+            .ask(CreateProposal { kind, initiator_id, ttl_secs })
+            .await
+            .map_err(|e| {
+                error!(?e, "create_proposal failed");
+                Error::internal("Failed to create proposal")
+            })
+    }
+
+    #[message]
+    pub(crate) async fn handle_cast_vote(
+        &mut self,
+        proposal_id: i32,
+        approve: bool,
+        signature: Vec<u8>,
+    ) -> Result<crate::actors::proposal_manager::VoteOutcome, crate::actors::proposal_manager::Error> {
+        use crate::actors::proposal_manager::CastVote;
+        let operator_id = self.credentials.id;
+        self.props
+            .actors
+            .proposal_manager
+            .ask(CastVote { proposal_id, operator_id, approve, signature })
+            .await
+            .map_err(|err| match err {
+                SendError::HandlerError(e) => e,
+                _ => crate::actors::proposal_manager::Error::ExecutionFailed("actor unavailable".to_owned()),
+            })
+    }
+
+    #[message]
+    pub(crate) async fn handle_query_pending(
+        &mut self,
+    ) -> Vec<crate::actors::proposal_manager::ProposalSummary> {
+        use crate::actors::proposal_manager::QueryPending;
+        let operator_id = self.credentials.id;
+        self.props
+            .actors
+            .proposal_manager
+            .ask(QueryPending { operator_id })
+            .await
+            .unwrap_or_default()
+    }
+}
+
+#[messages]
+impl OperatorSession {
+    #[message]
+    pub(crate) async fn handle_contribute_rekey_passphrase(
+        &mut self,
+        passphrase: Vec<u8>,
+    ) -> Result<bool, Error> {
+        use crate::actors::vault_coordinator::ContributeRekey;
+        use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
+
+        let operator_id = self.credentials.id;
+        self.props
+            .actors
+            .vault_coordinator
+            .ask(ContributeRekey {
+                operator_id,
+                passphrase: SafeCell::new(passphrase),
+            })
+            .await
+            .map_err(|_| Error::internal("VaultCoordinator unavailable"))
+    }
+
+    #[message]
+    pub(crate) async fn handle_contribute_recovery_rekey_passphrase(
+        &mut self,
+        recovery_operator_id: i32,
+        passphrase: Vec<u8>,
+    ) -> Result<bool, Error> {
+        use crate::actors::vault_coordinator::ContributeRecoveryRekey;
+        use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
+
+        self.props
+            .actors
+            .vault_coordinator
+            .ask(ContributeRecoveryRekey {
+                recovery_operator_id,
+                passphrase: SafeCell::new(passphrase),
+            })
+            .await
+            .map_err(|_| Error::internal("VaultCoordinator unavailable"))
+    }
+}

server/crates/arbiter-server/src/peers/operator/session/mod.rs

@@ -1,7 +1,7 @@
-use super::{OutOfBand, OperatorConnection};
+use super::{Credentials, OutOfBand, OperatorConnection};
 use crate::{
     actors::{
-        flow_coordinator::client_connect_approval::{ClientApprovalAnswer, ClientApprovalController},
+        flow_coordinator::client_connect_approval::ClientApprovalController,
         operator_registry::ConnectOperator,
     },
     peers::client::ClientProfile,
@@ -51,6 +51,7 @@ pub struct PendingClientApproval {
 
 pub struct OperatorSession {
     props: OperatorConnection,
+    credentials: Credentials,
     sender: Box<dyn Sender<OutOfBand>>,
 
     pending_client_approvals: HashMap<Vec<u8>, PendingClientApproval>,
@@ -59,9 +60,10 @@ pub struct OperatorSession {
 pub mod handlers;
 
 impl OperatorSession {
-    pub(crate) fn new(props: OperatorConnection, sender: Box<dyn Sender<OutOfBand>>) -> Self {
+    pub(crate) fn new(props: OperatorConnection, credentials: Credentials, sender: Box<dyn Sender<OutOfBand>>) -> Self {
         Self {
             props,
+            credentials,
             sender,
             pending_client_approvals: HashMap::default(),
         }
@@ -88,7 +90,6 @@ impl OperatorSession {
                 actor = "operator",
                 event = "failed to announce new client connection"
             );
-            let _ = controller.tell(ClientApprovalAnswer { approved: false }).await;
             return;
         }
 

server/crates/arbiter-server/src/peers/operator/vault_gate/mod.rs

@@ -3,8 +3,12 @@ use crate::{
     actors::{
         GlobalActors,
         vault::{self, Bootstrap, GetState, TryUnseal, VaultState, events},
+        vault_coordinator::{
+            ContributeBootstrap, ContributeRecoveryBootstrap, ContributeRecoveryUnseal,
+            ContributeUnseal, StartBootstrap,
+        },
     },
-    crypto::integrity::{self},
+    crypto::{KeyCell, integrity::{self}},
     db::DatabasePool,
 };
 use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
@@ -17,6 +21,9 @@ use tokio::sync::oneshot;
 use tracing::{error, info};
 use x25519_dalek::{EphemeralSecret, PublicKey, SharedSecret};
 
+pub use VaultGateMessage as Inbound;
+pub use VaultGateMessageReply as Outbound;
+
 pub mod state;
 
 #[derive(Debug, thiserror::Error)]
@@ -98,11 +105,9 @@ impl VaultGate {
         nonce: &[u8],
         ciphertext: &[u8],
         associated_data: &[u8],
-    ) -> Result<SafeCell<Vec<u8>>, ()> {
+    ) -> Result<KeyCell, ()> {
         let nonce = XNonce::from_slice(nonce);
-
         let cipher = XChaCha20Poly1305::new(secret.as_bytes().into());
-
         let mut key_buffer = SafeCell::new(ciphertext.to_vec());
 
         let decryption_result = key_buffer.write_inline(|write_handle| {
@@ -110,7 +115,9 @@ impl VaultGate {
         });
 
         match decryption_result {
-            Ok(()) => Ok(key_buffer),
+            Ok(()) => KeyCell::try_from(key_buffer).map_err(|()| {
+                error!("Decrypted key material has unexpected length");
+            }),
             Err(err) => {
                 error!(?err, "Failed to decrypt encrypted key material");
                 Err(())
@@ -119,7 +126,7 @@ impl VaultGate {
     }
 }
 
-#[messages(messages = Inbound, replies = Outbound)]
+#[messages(enum)]
 impl VaultGate {
     #[message]
     pub fn handle_handshake(
@@ -152,17 +159,14 @@ impl VaultGate {
             return Err(Error::State);
         };
 
-        let Ok(seal_key_buffer) = Self::decrypt_key(secret, &nonce, &ciphertext, &associated_data)
-        else {
+        let Ok(seal_key) = Self::decrypt_key(secret, &nonce, &ciphertext, &associated_data) else {
             return Err(Error::InvalidKey);
         };
 
         match self
             .actors
             .vault
-            .ask(TryUnseal {
-                seal_key_raw: seal_key_buffer,
-            })
+            .ask(TryUnseal { seal_key })
             .await
         {
             Ok(()) => {
@@ -192,17 +196,14 @@ impl VaultGate {
             return Err(Error::State);
         };
 
-        let Ok(seal_key_buffer) = Self::decrypt_key(secret, &nonce, &ciphertext, &associated_data)
-        else {
+        let Ok(seal_key) = Self::decrypt_key(secret, &nonce, &ciphertext, &associated_data) else {
             return Err(Error::InvalidKey);
         };
 
         match self
             .actors
             .vault
-            .ask(Bootstrap {
-                seal_key_raw: seal_key_buffer,
-            })
+            .ask(Bootstrap { seal_key })
             .await
         {
             Ok(()) => {
@@ -234,6 +235,89 @@ impl VaultGate {
 
         Ok(answer)
     }
+
+    #[message]
+    pub async fn handle_declare_committee(
+        &mut self,
+        count: usize,
+        recovery_count: usize,
+    ) -> Result<(), Error> {
+        self.actors
+            .vault_coordinator
+            .ask(StartBootstrap {
+                operator_id: self.auth_creds.id,
+                declared_count: count,
+                recovery_count,
+            })
+            .await
+            .map_err(|_| Error::internal("VaultCoordinator unavailable"))
+    }
+
+    #[message]
+    pub async fn handle_contribute_bootstrap_passphrase(
+        &mut self,
+        passphrase: Vec<u8>,
+    ) -> Result<bool, Error> {
+        let passphrase_cell = SafeCell::new(passphrase);
+        self.actors
+            .vault_coordinator
+            .ask(ContributeBootstrap {
+                operator_id: self.auth_creds.id,
+                passphrase: passphrase_cell,
+            })
+            .await
+            .map_err(|_| Error::internal("VaultCoordinator unavailable"))
+    }
+
+    #[message]
+    pub async fn handle_contribute_recovery_bootstrap_passphrase(
+        &mut self,
+        recovery_operator_id: i32,
+        passphrase: Vec<u8>,
+    ) -> Result<bool, Error> {
+        let passphrase_cell = SafeCell::new(passphrase);
+        self.actors
+            .vault_coordinator
+            .ask(ContributeRecoveryBootstrap {
+                recovery_operator_id,
+                passphrase: passphrase_cell,
+            })
+            .await
+            .map_err(|_| Error::internal("VaultCoordinator unavailable"))
+    }
+
+    #[message]
+    pub async fn handle_contribute_unseal_passphrase(
+        &mut self,
+        passphrase: Vec<u8>,
+    ) -> Result<bool, Error> {
+        let passphrase_cell = SafeCell::new(passphrase);
+        self.actors
+            .vault_coordinator
+            .ask(ContributeUnseal {
+                operator_id: self.auth_creds.id,
+                passphrase: passphrase_cell,
+            })
+            .await
+            .map_err(|_| Error::internal("VaultCoordinator unavailable"))
+    }
+
+    #[message]
+    pub async fn handle_contribute_recovery_unseal_passphrase(
+        &mut self,
+        recovery_operator_id: i32,
+        passphrase: Vec<u8>,
+    ) -> Result<bool, Error> {
+        let passphrase_cell = SafeCell::new(passphrase);
+        self.actors
+            .vault_coordinator
+            .ask(ContributeRecoveryUnseal {
+                recovery_operator_id,
+                passphrase: passphrase_cell,
+            })
+            .await
+            .map_err(|_| Error::internal("VaultCoordinator unavailable"))
+    }
 }
 
 impl Message<events::Bootstrapped> for VaultGate {

server/crates/arbiter-server/tests/client/auth.rs

@@ -1,8 +1,5 @@
 use super::common::ChannelTransport;
-use arbiter_crypto::{
-    authn::{self, AuthChallenge, CLIENT_CONTEXT},
-    safecell::{SafeCell, SafeCellHandle as _},
-};
+use arbiter_crypto::authn::{self, AuthChallenge, SigningContext};
 use arbiter_proto::{
     ClientMetadata,
     transport::{Receiver, Sender},
@@ -74,7 +71,7 @@ async fn insert_registered_client(
 fn sign_client_challenge(key: &SigningKey<MlDsa87>, challenge: &AuthChallenge) -> authn::Signature {
     let challenge = challenge.format();
     key.signing_key()
-        .sign_deterministic(&challenge, CLIENT_CONTEXT)
+        .sign_deterministic(&challenge, SigningContext::Client.as_bytes())
         .unwrap()
         .into()
 }
@@ -86,8 +83,8 @@ async fn insert_bootstrap_sentinel_operator(db: &db::DatabasePool) {
         .0
         .to_vec();
 
-    insert_into(schema::operator_client::table)
-        .values((schema::operator_client::public_key.eq(sentinel_key),))
+    insert_into(schema::operator_identity::table)
+        .values((schema::operator_identity::public_key.eq(sentinel_key),))
         .execute(&mut conn)
         .await
         .unwrap();
@@ -100,7 +97,7 @@ async fn spawn_test_actors(db: &db::DatabasePool) -> GlobalActors {
     actors
         .vault
         .ask(Bootstrap {
-            seal_key_raw: SafeCell::new(b"test-seal-key".to_vec()),
+            seal_key: arbiter_server::crypto::KeyCell::from([0u8; 32]),
         })
         .await
         .unwrap();

server/crates/arbiter-server/tests/common/mod.rs

@@ -2,7 +2,6 @@
     dead_code,
     reason = "Common test utilities that may not be used in every test"
 )]
-use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
 use arbiter_proto::transport::{Bi, Error, Receiver, Sender};
 use arbiter_server::{
     actors::{GlobalActors, vault::Vault},
@@ -19,7 +18,7 @@ pub(crate) async fn bootstrapped_vault(db: &db::DatabasePool) -> Vault {
         .await
         .unwrap();
     actor
-        .bootstrap(SafeCell::new(b"test-seal-key".to_vec()))
+        .bootstrap(arbiter_server::crypto::KeyCell::from([0u8; 32]))
         .await
         .unwrap();
     actor

server/crates/arbiter-server/tests/operator/auth.rs

@@ -1,8 +1,5 @@
 use super::common::ChannelTransport;
-use arbiter_crypto::{
-    authn::{self, AuthChallenge, OPERATOR_CONTEXT},
-    safecell::{SafeCell, SafeCellHandle as _},
-};
+use arbiter_crypto::authn::{self, AuthChallenge, SigningContext};
 use arbiter_proto::transport::{Error as TransportError, Receiver, Sender};
 use arbiter_server::{
     actors::{GlobalActors, bootstrap::GetToken, vault::Bootstrap},
@@ -27,7 +24,7 @@ fn sign_operator_challenge(
 ) -> authn::Signature {
     let challenge = challenge.format();
     key.signing_key()
-        .sign_deterministic(&challenge, OPERATOR_CONTEXT)
+        .sign_deterministic(&challenge, SigningContext::Operator.as_bytes())
         .unwrap()
         .into()
 }
@@ -157,7 +154,7 @@ pub async fn bootstrap_token_auth() {
     actors
         .vault
         .ask(Bootstrap {
-            seal_key_raw: SafeCell::new(b"test-seal-key".to_vec()),
+            seal_key: arbiter_server::crypto::KeyCell::from([0u8; 32]),
         })
         .await
         .unwrap();
@@ -206,8 +203,8 @@ pub async fn bootstrap_token_auth() {
     task.await.unwrap().unwrap();
 
     let mut conn = db.get().await.unwrap();
-    let stored_pubkey: Vec<u8> = schema::operator_client::table
-        .select(schema::operator_client::public_key)
+    let stored_pubkey: Vec<u8> = schema::operator_identity::table
+        .select(schema::operator_identity::public_key)
         .first::<Vec<u8>>(&mut conn)
         .await
         .unwrap();
@@ -259,7 +256,7 @@ pub async fn bootstrap_invalid_token_auth() {
     ));
 
     let mut conn = db.get().await.unwrap();
-    let count: i64 = schema::operator_client::table
+    let count: i64 = schema::operator_identity::table
         .count()
         .get_result::<i64>(&mut conn)
         .await
@@ -275,7 +272,7 @@ pub async fn challenge_auth() {
     actors
         .vault
         .ask(Bootstrap {
-            seal_key_raw: SafeCell::new(b"test-seal-key".to_vec()),
+            seal_key: arbiter_server::crypto::KeyCell::from([0u8; 32]),
         })
         .await
         .unwrap();
@@ -285,9 +282,9 @@ pub async fn challenge_auth() {
 
     {
         let mut conn = db.get().await.unwrap();
-        let id: i32 = insert_into(schema::operator_client::table)
-            .values((schema::operator_client::public_key.eq(pubkey_bytes.clone()),))
-            .returning(schema::operator_client::id)
+        let id: i32 = insert_into(schema::operator_identity::table)
+            .values((schema::operator_identity::public_key.eq(pubkey_bytes.clone()),))
+            .returning(schema::operator_identity::id)
             .get_result(&mut conn)
             .await
             .unwrap();
@@ -361,7 +358,7 @@ pub async fn challenge_auth_rejects_integrity_tag_mismatch_when_unsealed() {
     actors
         .vault
         .ask(Bootstrap {
-            seal_key_raw: SafeCell::new(b"test-seal-key".to_vec()),
+            seal_key: arbiter_server::crypto::KeyCell::from([0u8; 32]),
         })
         .await
         .unwrap();
@@ -371,8 +368,8 @@ pub async fn challenge_auth_rejects_integrity_tag_mismatch_when_unsealed() {
 
     {
         let mut conn = db.get().await.unwrap();
-        insert_into(schema::operator_client::table)
-            .values((schema::operator_client::public_key.eq(pubkey_bytes.clone()),))
+        insert_into(schema::operator_identity::table)
+            .values((schema::operator_identity::public_key.eq(pubkey_bytes.clone()),))
             .execute(&mut conn)
             .await
             .unwrap();
@@ -400,7 +397,7 @@ pub async fn challenge_auth_rejects_integrity_tag_mismatch_when_unsealed() {
     let challenge = match response {
         Ok(resp) => match resp {
             auth::Outbound::AuthChallenge { challenge } => challenge,
-            other @ auth::Outbound::AuthSuccess => panic!("Expected AuthChallenge, got {other:?}"),
+            other => panic!("Expected AuthChallenge, got {other:?}"),
         },
         Err(err) => panic!("Expected Ok response, got Err({err:?})"),
     };
@@ -434,7 +431,7 @@ pub async fn challenge_auth_rejects_invalid_signature() {
     actors
         .vault
         .ask(Bootstrap {
-            seal_key_raw: SafeCell::new(b"test-seal-key".to_vec()),
+            seal_key: arbiter_server::crypto::KeyCell::from([0u8; 32]),
         })
         .await
         .unwrap();
@@ -444,9 +441,9 @@ pub async fn challenge_auth_rejects_invalid_signature() {
 
     {
         let mut conn = db.get().await.unwrap();
-        let id: i32 = insert_into(schema::operator_client::table)
-            .values((schema::operator_client::public_key.eq(pubkey_bytes.clone()),))
-            .returning(schema::operator_client::id)
+        let id: i32 = insert_into(schema::operator_identity::table)
+            .values((schema::operator_identity::public_key.eq(pubkey_bytes.clone()),))
+            .returning(schema::operator_identity::id)
             .get_result(&mut conn)
             .await
             .unwrap();

server/crates/arbiter-server/tests/operator/unseal.rs

@@ -1,7 +1,4 @@
-use arbiter_crypto::{
-    authn,
-    safecell::{SafeCell, SafeCellHandle as _},
-};
+use arbiter_crypto::authn;
 use arbiter_server::{
     actors::{
         GlobalActors,
@@ -22,7 +19,7 @@ use tokio::sync::oneshot;
 use x25519_dalek::{EphemeralSecret, PublicKey};
 
 async fn setup_sealed_gate(
-    seal_key: &[u8],
+    seal_key: &[u8; 32],
 ) -> (
     db::DatabasePool,
     kameo::actor::ActorRef<VaultGate>,
@@ -34,7 +31,7 @@ async fn setup_sealed_gate(
     actors
         .vault
         .ask(Bootstrap {
-            seal_key_raw: SafeCell::new(seal_key.to_vec()),
+            seal_key: arbiter_server::crypto::KeyCell::from(*seal_key),
         })
         .await
         .unwrap();
@@ -50,7 +47,7 @@ async fn setup_sealed_gate(
 
 async fn client_dh_encrypt(
     gate: &kameo::actor::ActorRef<VaultGate>,
-    key_to_send: &[u8],
+    key_to_send: &[u8; 32],
 ) -> HandleUnsealEncryptedKey {
     let client_secret = EphemeralSecret::random();
     let client_public = PublicKey::from(&client_secret);
@@ -83,7 +80,7 @@ async fn client_dh_encrypt(
 #[tokio::test]
 #[test_log::test]
 pub async fn unseal_success() {
-    let seal_key = b"test-seal-key";
+    let seal_key = b"test-seal-key-padded-to-32bytes!";
     let (_db, gate, _promotion_rx) = setup_sealed_gate(seal_key).await;
 
     let encrypted_key = client_dh_encrypt(&gate, seal_key).await;
@@ -95,10 +92,10 @@ pub async fn unseal_success() {
 #[tokio::test]
 #[test_log::test]
 pub async fn unseal_wrong_seal_key() {
-    let seal_key = b"test-seal-key";
+    let seal_key = b"test-seal-key-padded-to-32bytes!";
     let (_db, gate, _promotion_rx) = setup_sealed_gate(seal_key).await;
 
-    let encrypted_key = client_dh_encrypt(&gate, b"wrong-key").await;
+    let encrypted_key = client_dh_encrypt(&gate, b"wrong-key-padded-to-32-bytes!!!!").await;
 
     let response = gate.ask(encrypted_key).await;
     assert!(matches!(
@@ -112,7 +109,7 @@ pub async fn unseal_wrong_seal_key() {
 #[tokio::test]
 #[test_log::test]
 pub async fn unseal_corrupted_ciphertext() {
-    let seal_key = b"test-seal-key";
+    let seal_key = b"test-seal-key-padded-to-32bytes!";
     let (_db, gate, _promotion_rx) = setup_sealed_gate(seal_key).await;
 
     let client_secret = EphemeralSecret::random();
@@ -143,11 +140,11 @@ pub async fn unseal_corrupted_ciphertext() {
 #[tokio::test]
 #[test_log::test]
 pub async fn unseal_retry_after_invalid_key() {
-    let seal_key = b"real-seal-key";
+    let seal_key = b"real-seal-key-padded-to-32bytes!";
     let (_db, gate, _promotion_rx) = setup_sealed_gate(seal_key).await;
 
     {
-        let encrypted_key = client_dh_encrypt(&gate, b"wrong-key").await;
+        let encrypted_key = client_dh_encrypt(&gate, b"wrong-key-padded-to-32-bytes!!!!").await;
 
         let response = gate.ask(encrypted_key).await;
         assert!(matches!(

server/crates/arbiter-server/tests/vault/concurrency.rs

@@ -166,7 +166,7 @@ async fn decrypt_roundtrip_after_high_concurrency() {
         .await
         .unwrap();
     decryptor
-        .try_unseal(SafeCell::new(b"test-seal-key".to_vec()))
+        .try_unseal(arbiter_server::crypto::KeyCell::from([0u8; 32]))
         .await
         .unwrap();
 

server/crates/arbiter-server/tests/vault/lifecycle.rs

@@ -3,24 +3,29 @@ use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
 use arbiter_server::{
     actors::{
         GlobalActors,
-        vault::{Error, Vault},
+        vault::{Error, GetState, Vault, VaultState},
+        vault_coordinator::{
+            ContributeBootstrap, ContributeRecoveryBootstrap, ContributeRecoveryUnseal,
+            Error as CoordinatorError, StartBootstrap, VaultCoordinator,
+        },
     },
-    crypto::encryption::v1::{Nonce, ROOT_KEY_TAG},
+    crypto::{KeyCell, encryption::v1::{Nonce, ROOT_KEY_TAG}},
     db::{self, models, schema},
 };
 
-use diesel::{QueryDsl, SelectableHelper};
+use diesel::{ExpressionMethods, QueryDsl, SelectableHelper, insert_into};
 use diesel_async::RunQueryDsl;
+use kameo::actor::Spawn as _;
 
 #[tokio::test]
 #[test_log::test]
-async fn bootstrap() {
+async fn test_bootstrap() {
     let db = db::create_test_pool().await;
     let mut actor = Vault::new(db.clone(), GlobalActors::spawn_message_bus())
         .await
         .unwrap();
 
-    let seal_key = SafeCell::new(b"test-seal-key".to_vec());
+    let seal_key = KeyCell::from([0u8; 32]);
     actor.bootstrap(seal_key).await.unwrap();
 
     let mut conn = db.get().await.unwrap();
@@ -39,18 +44,18 @@ async fn bootstrap() {
 
 #[tokio::test]
 #[test_log::test]
-async fn bootstrap_rejects_double() {
+async fn test_bootstrap_rejects_double() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
-    let seal_key2 = SafeCell::new(b"test-seal-key".to_vec());
+    let seal_key2 = KeyCell::from([0u8; 32]);
     let err = actor.bootstrap(seal_key2).await.unwrap_err();
     assert!(matches!(err, Error::AlreadyBootstrapped));
 }
 
 #[tokio::test]
 #[test_log::test]
-async fn create_new_before_bootstrap_fails() {
+async fn test_create_new_before_bootstrap_fails() {
     let db = db::create_test_pool().await;
     let mut actor = Vault::new(db, GlobalActors::spawn_message_bus())
         .await
@@ -65,7 +70,7 @@ async fn create_new_before_bootstrap_fails() {
 
 #[tokio::test]
 #[test_log::test]
-async fn decrypt_before_bootstrap_fails() {
+async fn test_decrypt_before_bootstrap_fails() {
     let db = db::create_test_pool().await;
     let mut actor = Vault::new(db, GlobalActors::spawn_message_bus())
         .await
@@ -77,7 +82,7 @@ async fn decrypt_before_bootstrap_fails() {
 
 #[tokio::test]
 #[test_log::test]
-async fn new_restores_sealed_state() {
+async fn test_new_restores_sealed_state() {
     let db = db::create_test_pool().await;
     let actor = common::bootstrapped_vault(&db).await;
     drop(actor);
@@ -91,7 +96,7 @@ async fn new_restores_sealed_state() {
 
 #[tokio::test]
 #[test_log::test]
-async fn unseal_correct_password() {
+async fn test_unseal_correct_password() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
@@ -105,7 +110,7 @@ async fn unseal_correct_password() {
     let mut actor = Vault::new(db.clone(), GlobalActors::spawn_message_bus())
         .await
         .unwrap();
-    let seal_key = SafeCell::new(b"test-seal-key".to_vec());
+    let seal_key = KeyCell::from([0u8; 32]);
     actor.try_unseal(seal_key).await.unwrap();
 
     let mut decrypted = actor.decrypt(aead_id).await.unwrap();
@@ -114,7 +119,7 @@ async fn unseal_correct_password() {
 
 #[tokio::test]
 #[test_log::test]
-async fn unseal_wrong_then_correct_password() {
+async fn test_unseal_wrong_then_correct_password() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
@@ -129,13 +134,137 @@ async fn unseal_wrong_then_correct_password() {
         .await
         .unwrap();
 
-    let bad_key = SafeCell::new(b"wrong-password".to_vec());
+    let bad_key = KeyCell::from([1u8; 32]);
     let err = actor.try_unseal(bad_key).await.unwrap_err();
     assert!(matches!(err, Error::InvalidKey));
 
-    let good_key = SafeCell::new(b"test-seal-key".to_vec());
+    let good_key = KeyCell::from([0u8; 32]);
     actor.try_unseal(good_key).await.unwrap();
 
     let mut decrypted = actor.decrypt(aead_id).await.unwrap();
     assert_eq!(*decrypted.read(), plaintext);
 }
+
+#[tokio::test]
+#[test_log::test]
+async fn two_operator_vault_requires_recovery_share() {
+    let db = db::create_test_pool().await;
+    let bus = GlobalActors::spawn_message_bus();
+    let vault_ref = Vault::spawn(Vault::new(db.clone(), bus).await.unwrap());
+    let coordinator = VaultCoordinator::spawn(VaultCoordinator::new(db, vault_ref));
+
+    let err = coordinator
+        .ask(StartBootstrap {
+            operator_id: 1,
+            declared_count: 2,
+            recovery_count: 0,
+        })
+        .await
+        .unwrap_err();
+
+    assert!(
+        matches!(
+            err,
+            kameo::error::SendError::HandlerError(CoordinatorError::TwoOperatorsRequireRecovery)
+        ),
+        "expected TwoOperatorsRequireRecovery, got {err:?}"
+    );
+}
+
+/// §3.4: Bootstrap with 1 ordinary + 1 recovery operator produces a valid 1-of-2 Shamir split.
+/// Both ordinary and recovery shares are stored; the vault can be unsealed with either one.
+#[tokio::test]
+#[test_log::test]
+async fn recovery_share_stored_and_used_for_unseal() {
+    let db = db::create_test_pool().await;
+    let bus = GlobalActors::spawn_message_bus();
+    let vault_ref = Vault::spawn(Vault::new(db.clone(), bus).await.unwrap());
+    let coordinator = VaultCoordinator::spawn(VaultCoordinator::new(db.clone(), vault_ref.clone()));
+
+    // Register one ordinary operator and one recovery operator in the DB
+    let ordinary_id: i32 = {
+        let mut conn = db.get().await.unwrap();
+        insert_into(schema::operator_identity::table)
+            .values(schema::operator_identity::public_key.eq(vec![1u8; 32]))
+            .returning(schema::operator_identity::id)
+            .get_result(&mut conn)
+            .await
+            .unwrap()
+    };
+    let recovery_id: i32 = {
+        let mut conn = db.get().await.unwrap();
+        insert_into(schema::recovery_operator_identity::table)
+            .values(schema::recovery_operator_identity::public_key.eq(vec![2u8; 32]))
+            .returning(schema::recovery_operator_identity::id)
+            .get_result(&mut conn)
+            .await
+            .unwrap()
+    };
+
+    // Declare committee: 1 ordinary + 1 recovery
+    coordinator
+        .ask(StartBootstrap {
+            operator_id: ordinary_id,
+            declared_count: 1,
+            recovery_count: 1,
+        })
+        .await
+        .unwrap();
+
+    // Recovery operator contributes first — bootstrap should not finalize yet
+    let done = coordinator
+        .ask(ContributeRecoveryBootstrap {
+            recovery_operator_id: recovery_id,
+            passphrase: SafeCell::new(b"recovery-pass".to_vec()),
+        })
+        .await
+        .unwrap();
+    assert!(!done, "should not finalize with only recovery passphrase");
+
+    // Ordinary operator contributes — now bootstrap finalizes
+    let done = coordinator
+        .ask(ContributeBootstrap {
+            operator_id: ordinary_id,
+            passphrase: SafeCell::new(b"ordinary-pass".to_vec()),
+        })
+        .await
+        .unwrap();
+    assert!(done, "should finalize once all contributors are in");
+
+    // After bootstrap, vault is Unsealed (seal key still in memory).
+    let state = vault_ref.ask(GetState {}).await.unwrap();
+    assert_eq!(state, VaultState::Unsealed);
+
+    // Verify recovery_operator row was created
+    let recovery_share_count: i64 = {
+        let mut conn = db.get().await.unwrap();
+        schema::recovery_operator::table
+            .count()
+            .get_result(&mut conn)
+            .await
+            .unwrap()
+    };
+    assert_eq!(recovery_share_count, 1);
+
+    // Simulate restart: drop vault and coordinator, create fresh vault (comes up Sealed).
+    drop(coordinator);
+    drop(vault_ref);
+    let bus2 = GlobalActors::spawn_message_bus();
+    let vault_ref2 = Vault::spawn(Vault::new(db.clone(), bus2).await.unwrap());
+    let state = vault_ref2.ask(GetState {}).await.unwrap();
+    assert_eq!(state, VaultState::Sealed);
+
+    // §3.5: Unseal using ONLY the recovery operator share (threshold = shamir_threshold(1) = 1).
+    let coordinator2 = VaultCoordinator::spawn(VaultCoordinator::new(db.clone(), vault_ref2.clone()));
+    let done = coordinator2
+        .ask(ContributeRecoveryUnseal {
+            recovery_operator_id: recovery_id,
+            passphrase: SafeCell::new(b"recovery-pass".to_vec()),
+        })
+        .await
+        .unwrap();
+    assert!(done, "recovery share alone should satisfy threshold");
+
+    let state = vault_ref2.ask(GetState {}).await.unwrap();
+    assert_eq!(state, VaultState::Unsealed);
+}

server/crates/arbiter-server/tests/vault/storage.rs

@@ -12,7 +12,7 @@ use std::collections::HashSet;
 
 #[tokio::test]
 #[test_log::test]
-async fn create_decrypt_roundtrip() {
+async fn test_create_decrypt_roundtrip() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
@@ -28,7 +28,7 @@ async fn create_decrypt_roundtrip() {
 
 #[tokio::test]
 #[test_log::test]
-async fn decrypt_nonexistent_returns_not_found() {
+async fn test_decrypt_nonexistent_returns_not_found() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
@@ -38,7 +38,7 @@ async fn decrypt_nonexistent_returns_not_found() {
 
 #[tokio::test]
 #[test_log::test]
-async fn ciphertext_differs_across_entries() {
+async fn test_ciphertext_differs_across_entries() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
@@ -76,7 +76,7 @@ async fn ciphertext_differs_across_entries() {
 
 #[tokio::test]
 #[test_log::test]
-async fn nonce_never_reused() {
+async fn test_nonce_never_reused() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;