deps(server): version bump

Reviewed-on: #95

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/vault/unseal.proto

@@ -20,6 +20,7 @@ enum UnsealResult {
   UNSEAL_RESULT_SUCCESS = 1;
   UNSEAL_RESULT_INVALID_KEY = 2;
   UNSEAL_RESULT_UNBOOTSTRAPPED = 3;
+  UNSEAL_RESULT_LOCKED_OUT = 4;
 }
 
 message Request {

server/Cargo.toml

@@ -6,33 +6,34 @@ resolver = "3"
 
 
 [workspace.dependencies]
-alloy = "2.0.4"
-async-trait = "0.1.89"
-base64 = "0.22.1"
-chrono = { version = "0.4.44", features = ["serde"] }
-futures = "0.3.32"
+alloy = "2.4.1"
+async-trait = "0.1.92"
+base64 = "0.23.1"
+chrono = { version = "0.4.45", features = ["serde"] }
+futures = "0.3.34"
 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"}
 hmac = "0.13.0"
 miette = { version = "7.6.0", features = ["fancy", "serde"] }
-ml-dsa = { version = "0.1.0-rc.9", features = ["zeroize"] }
+ml-dsa = { version = "0.1.1", features = ["zeroize"] }
 mutants = "0.0.4"
-prost = "0.14.3"
-prost-types = { version = "0.14.3", features = ["chrono"] }
-rand = "0.10.1"
-rcgen = { version = "0.14.7", features = [ "aws_lc_rs",  "pem", "x509-parser", "zeroize" ], default-features = false }
+prost = "0.14.4"
+prost-types = { version = "0.14.4", features = ["chrono"] }
+rand = "0.10.2"
+rand_core = "0.10.1"
+rcgen = { version = "0.14.9", features = [ "aws_lc_rs",  "pem", "x509-parser", "zeroize" ], default-features = false }
 rstest = "0.26.1"
-rustls = { version = "0.23.40", features = ["aws-lc-rs", "logging", "prefer-post-quantum", "std"], default-features = false }
-rustls-pki-types = "1.14.1"
+rustls = { version = "0.23.43", features = ["aws-lc-rs", "logging", "prefer-post-quantum", "std"], default-features = false }
+rustls-pki-types = "1.15.1"
 sha2 = "0.11"
 smlang = "0.8.0"
-thiserror = "2.0.18"
-tokio = { version = "1.52.1", features = ["full"] }
-tokio-stream = { version = "0.1.18", features = ["full"] }
-tonic = { version = "0.14.5", features = [ "deflate", "gzip", "tls-connect-info", "zstd" ] }
+thiserror = "2.0.20"
+tokio = { version = "1.53.1", features = ["full"] }
+tokio-stream = { version = "0.1.19", features = ["full"] }
+tonic = { version = "0.14.6", features = [ "deflate", "gzip", "tls-connect-info", "zstd" ] }
 tracing = "0.1.44"
-x25519-dalek = { version = "2.0.1", features = ["getrandom"] }
+x25519-dalek = { version = "3.0.0", features = ["getrandom"] }
 
 [workspace.lints.rust]
 missing_unsafe_on_extern = "deny"
@@ -129,6 +130,7 @@ 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"

server/crates/arbiter-client/Cargo.toml

@@ -20,8 +20,8 @@ tonic.features = ["tls-aws-lc"]
 tokio.workspace = true
 tokio-stream.workspace = true
 thiserror.workspace = true
-http = "1.4.0"
-rustls-webpki = { version = "0.103.13", features = ["aws-lc-rs"] }
+http = "1.5.0"
+rustls-webpki = { version = "0.103.15", features = ["aws-lc-rs"] }
 async-trait.workspace = true
 chrono.workspace = true
 

server/crates/arbiter-crypto/Cargo.toml

@@ -6,10 +6,10 @@ edition = "2024"
 [dependencies]
 ml-dsa = {workspace = true, optional = true }
 rand = {workspace = true, optional = true}
-memsafe = {version = "0.4.0", optional = true}
+memsafe = {version = "1.0.2", optional = true}
 hmac.workspace = true
 alloy.workspace = true
-x-wing = { version = "0.1.0-rc.0", features = ["zeroize"] }
+x-wing = { version = "0.1.0", features = ["zeroize"] }
 chrono.workspace = true
 thiserror.workspace = true
 

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

@@ -1,8 +1,8 @@
 use chrono::{DateTime, Utc};
 use hmac::digest::Digest;
 use ml_dsa::{
-    EncodedVerifyingKey, Error, KeyGen, MlDsa87, Seed, Signature as MlDsaSignature,
-    SigningKey as MlDsaSigningKey, VerifyingKey as MlDsaVerifyingKey, signature::Keypair as _,
+    EncodedVerifyingKey, Error, ExpandedSigningKey, Generate, MlDsa87, Seed,
+    Signature as MlDsaSignature, SigningKey as MlDsaSigningKey, VerifyingKey as MlDsaVerifyingKey,
 };
 use rand::RngExt;
 
@@ -77,7 +77,10 @@ impl crate::hashing::Hashable for PublicKey {
 pub struct Signature(Box<MlDsaSignature<KeyParams>>);
 
 #[derive(Debug)]
-pub struct SigningKey(Box<MlDsaSigningKey<KeyParams>>);
+pub struct SigningKey {
+    key: Box<ExpandedSigningKey<KeyParams>>,
+    seed: Seed,
+}
 
 impl PublicKey {
     pub fn to_bytes(&self) -> Vec<u8> {
@@ -100,24 +103,31 @@ impl Signature {
 
 impl SigningKey {
     pub fn generate() -> Self {
-        Self(Box::new(KeyParams::key_gen(&mut rand::rng())))
+        let seed = MlDsaSigningKey::<KeyParams>::generate_from_rng(&mut rand::rng()).to_seed();
+        Self {
+            key: Box::new(ExpandedSigningKey::from_seed(&seed)),
+            seed,
+        }
     }
 
     pub fn from_seed(seed: [u8; 32]) -> Self {
-        Self(Box::new(KeyParams::from_seed(&Seed::from(seed))))
+        let seed = Seed::from(seed);
+        Self {
+            key: Box::new(ExpandedSigningKey::from_seed(&seed)),
+            seed,
+        }
     }
 
     pub fn to_seed(&self) -> [u8; 32] {
-        self.0.to_seed().into()
+        self.seed.into()
     }
 
     pub fn public_key(&self) -> PublicKey {
-        self.0.verifying_key().into()
+        self.key.verifying_key().into()
     }
 
     pub fn sign_message(&self, message: &[u8], context: &[u8]) -> Result<Signature, Error> {
-        self.0
-            .signing_key()
+        self.key
             .sign_deterministic(message, context)
             .map(Into::into)
     }
@@ -145,12 +155,6 @@ impl From<MlDsaSignature<KeyParams>> for Signature {
     }
 }
 
-impl From<MlDsaSigningKey<KeyParams>> for SigningKey {
-    fn from(value: MlDsaSigningKey<KeyParams>) -> Self {
-        Self(Box::new(value))
-    }
-}
-
 impl TryFrom<Vec<u8>> for PublicKey {
     type Error = ();
 
@@ -188,15 +192,15 @@ impl TryFrom<&'_ [u8]> for Signature {
 
 #[cfg(test)]
 mod tests {
-    use ml_dsa::{KeyGen, MlDsa87, signature::Keypair as _};
+    use ml_dsa::{Generate as _, MlDsa87, SigningKey as RealSigningKey, signature::Keypair as _};
 
     use crate::authn::AuthChallenge;
 
-    use super::{CLIENT_CONTEXT, PublicKey, Signature, SigningKey, OPERATOR_CONTEXT};
+    use super::{CLIENT_CONTEXT, OPERATOR_CONTEXT, PublicKey, Signature, SigningKey};
 
     #[test]
     fn public_key_round_trip_decodes() {
-        let key = MlDsa87::key_gen(&mut rand::rng());
+        let key = RealSigningKey::<MlDsa87>::generate();
         let encoded = PublicKey::from(key.verifying_key()).to_bytes();
 
         let decoded = PublicKey::try_from(encoded.as_slice()).expect("public key should decode");

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-macros/Cargo.toml

@@ -10,11 +10,10 @@ doctest = false
 [dependencies]
 proc-macro2 = "1.0"
 quote = "1.0"
-syn = { version = "2.0", features = ["derive", "fold", "full", "visit-mut"] }
+syn = { version = "3.0", 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/Cargo.toml

@@ -9,7 +9,7 @@ license = "Apache-2.0"
 tonic.workspace = true
 tokio.workspace = true
 futures.workspace = true
-tonic-prost = "0.14.5"
+tonic-prost = "0.14.6"
 prost.workspace = true
 kameo.workspace = true
 url = "2.5.8"
@@ -22,7 +22,7 @@ async-trait.workspace = true
 tokio-stream.workspace = true
 
 [build-dependencies]
-tonic-prost-build = "0.14.5"
+tonic-prost-build = "0.14.6"
 
 [dev-dependencies]
 rstest.workspace = true

server/crates/arbiter-server/Cargo.toml

@@ -9,8 +9,14 @@ license = "Apache-2.0"
 workspace = true
 
 [dependencies]
-diesel = { version = "2.3.9", features = ["chrono", "returning_clauses_for_sqlite_3_35", "serde_json", "time", "uuid"] }
-diesel-async = { version = "0.9.0", features = [
+diesel = { version = "2.3.12", features = [
+    "chrono",
+    "returning_clauses_for_sqlite_3_35",
+    "serde_json",
+    "time",
+    "uuid",
+] }
+diesel-async = { version = "0.9.2", features = [
     "bb8",
     "migrations",
     "sqlite",
@@ -31,20 +37,21 @@ diesel_migrations = { version = "2.3.2", features = ["sqlite"] }
 async-trait.workspace = true
 tokio-stream.workspace = true
 rand.workspace = true
+rand_core.workspace = true
 rcgen.workspace = true
 chrono.workspace = true
 kameo.workspace = true
-chacha20poly1305 = { version = "0.10.1", features = ["std"] }
-argon2 = { version = "0.5.3", features = ["zeroize"] }
+chacha20poly1305 = { version = "0.11.0" }
+argon2 = { version = "0.6.0", features = ["zeroize"] }
 restructed = "0.2.2"
 strum = { version = "0.28.0", features = ["derive"] }
-pem = "3.0.6"
+pem = "4.0.0"
 sha2.workspace = true
 hmac.workspace = true
 alloy.workspace = true
 prost-types.workspace = true
 arbiter-tokens-registry.path = "../arbiter-tokens-registry"
-anyhow = "1.0.102"
+anyhow = "1.0.104"
 mutants.workspace = true
 subtle = "2.6.1"
 x25519-dalek.workspace = true

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

@@ -43,13 +43,24 @@ 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,
+
+    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,

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

@@ -1,29 +1,48 @@
 use crate::db::{self, DatabasePool, schema};
+use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
 use arbiter_proto::{BOOTSTRAP_PATH, home_path};
 
 use diesel::QueryDsl;
 use diesel_async::RunQueryDsl;
 use kameo::{Actor, messages};
-use rand::{RngExt, distr::Alphanumeric, make_rng, rngs::StdRng};
+use rand::{RngExt, distr::Alphanumeric, rngs::SysRng};
+use rand_core::UnwrapErr;
+use std::path::{Path, PathBuf};
 use subtle::ConstantTimeEq as _;
 use thiserror::Error;
+use tracing::warn;
 
 const TOKEN_LENGTH: usize = 64;
 
-pub async fn generate_token() -> Result<String, std::io::Error> {
-    let rng: StdRng = make_rng();
+async fn write_token_file(path: &Path, content: &str) -> Result<(), std::io::Error> {
+    tokio::fs::write(path, content.as_bytes()).await?;
 
-    let token = rng.sample_iter(Alphanumeric).take(TOKEN_LENGTH).fold(
-        String::default(),
-        |mut accum, char| {
-            accum += char.to_string().as_str();
-            accum
-        },
-    );
+    #[cfg(unix)]
+    {
+        use std::os::unix::fs::PermissionsExt as _;
+        tokio::fs::set_permissions(path, std::fs::Permissions::from_mode(0o600)).await?;
+    }
 
-    tokio::fs::write(home_path()?.join(BOOTSTRAP_PATH), token.as_str()).await?;
+    Ok(())
+}
 
-    Ok(token)
+async fn generate_token(path: &Path) -> Result<SafeCell<[u8; TOKEN_LENGTH]>, std::io::Error> {
+    let mut cell = SafeCell::new([0u8; TOKEN_LENGTH]);
+    {
+        let mut buf = cell.write();
+        for (slot, b) in buf
+            .iter_mut()
+            .zip(UnwrapErr(SysRng).sample_iter(Alphanumeric))
+        {
+            *slot = b;
+        }
+    }
+
+    let token_str = cell.read_inline(|buf| String::from_utf8_lossy(buf.as_ref()).into_owned());
+
+    write_token_file(path, &token_str).await?;
+
+    Ok(cell)
 }
 
 #[derive(Error, Debug)]
@@ -40,7 +59,8 @@ pub enum Error {
 
 #[derive(Actor)]
 pub struct Bootstrapper {
-    token: Option<String>,
+    token: Option<SafeCell<[u8; TOKEN_LENGTH]>>,
+    token_path: Option<PathBuf>,
 }
 
 impl Bootstrapper {
@@ -48,40 +68,43 @@ 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?
         };
 
-        let token = if row_count == 0 {
-            let token = generate_token().await?;
-            Some(token)
+        let (token, token_path) = if row_count == 0 {
+            let path = home_path()?.join(BOOTSTRAP_PATH);
+            let token = generate_token(&path).await?;
+            (Some(token), Some(path))
         } else {
-            None
+            (None, None)
         };
 
-        Ok(Self { token })
+        Ok(Self { token, token_path })
+    }
+}
+
+impl Bootstrapper {
+    fn is_correct_token(&mut self, token: &[u8]) -> bool {
+        self.token.as_mut().is_some_and(|expected| {
+            expected.read_inline(|exp| bool::from(exp.as_ref().ct_eq(token)))
+        })
     }
 }
 
 #[messages]
 impl Bootstrapper {
     #[message]
-    pub fn is_correct_token(&self, token: String) -> bool {
-        self.token.as_ref().is_some_and(|expected| {
-            let expected_bytes = expected.as_bytes();
-            let token_bytes = token.as_bytes();
-
-            let choice = expected_bytes.ct_eq(token_bytes);
-            bool::from(choice)
-        })
-    }
-
-    #[message]
-    pub fn consume_token(&mut self, token: String) -> bool {
-        if self.is_correct_token(token) {
+    pub async fn consume_token(&mut self, token: Vec<u8>) -> bool {
+        if self.is_correct_token(&token) {
             self.token = None;
+            if let Some(path) = self.token_path.take()
+                && let Err(e) = tokio::fs::remove_file(&path).await
+            {
+                warn!(error = ?e, path = ?path, "Failed to delete bootstrap token file after consumption");
+            }
             true
         } else {
             false
@@ -92,7 +115,9 @@ impl Bootstrapper {
 #[messages]
 impl Bootstrapper {
     #[message]
-    pub fn get_token(&self) -> Option<String> {
-        self.token.clone()
+    pub fn get_token(&mut self) -> Option<String> {
+        self.token
+            .as_mut()
+            .map(|cell| cell.read_inline(|buf| String::from_utf8_lossy(buf.as_ref()).into_owned()))
     }
 }

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

@@ -1,9 +1,9 @@
 use crate::{
     actors::vault::{CreateNew, Decrypt, Vault},
-    crypto::integrity,
+    crypto::integrity::{self, Integrable},
     db::{
         DatabaseError, DatabasePool,
-        models::{self},
+        models::{self, EvmWalletId},
         schema,
     },
     evm::{
@@ -25,14 +25,35 @@ use diesel::{
 use diesel_async::RunQueryDsl;
 use kameo::{Actor, actor::ActorRef, messages};
 use rand::{SeedableRng, rng, rngs::StdRng};
+use tracing::error;
 
 pub use crate::evm::safe_signer;
 
+/// Integrity guard that binds a wallet's encrypted key ID to its Ethereum address.
+/// Both fields are included in the HMAC — swapping `aead_encrypted_id` in the DB
+/// invalidates the envelope MAC, and the AEAD ciphertext is also bound to `address`
+/// as AAD, so decryption fails too.
+#[derive(arbiter_macros::Hashable)]
+struct EvmWalletIntegrity {
+    aead_encrypted_id: i32,
+    address: Address,
+}
+
+impl Integrable for EvmWalletIntegrity {
+    const KIND: &'static str = "evm_wallet";
+}
+
 #[derive(Debug, thiserror::Error)]
 pub enum SignTransactionError {
     #[error("Wallet not found")]
     WalletNotFound,
 
+    #[error("Decrypted key does not match requested wallet address")]
+    KeyAddressMismatch,
+
+    #[error("Internal signing error")]
+    Internal,
+
     #[error("Database error: {0}")]
     Database(#[from] DatabaseError),
 
@@ -64,6 +85,12 @@ pub enum Error {
     Integrity(#[from] integrity::Error),
 }
 
+impl From<diesel::result::Error> for Error {
+    fn from(e: diesel::result::Error) -> Self {
+        Self::Database(DatabaseError::from(e))
+    }
+}
+
 #[derive(Actor)]
 pub struct EvmActor {
     pub vault: ActorRef<Vault>,
@@ -97,26 +124,45 @@ impl EvmActor {
 
         let aead_id: i32 = self
             .vault
-            .ask(CreateNew { plaintext })
+            .ask(CreateNew {
+                plaintext,
+                aad: address.as_slice().to_vec(),
+            })
             .await
             .map_err(|_| Error::VaultSend)?;
 
         let mut conn = self.db.get().await.map_err(DatabaseError::from)?;
-        let wallet_id = insert_into(schema::evm_wallet::table)
-            .values(&models::NewEvmWallet {
-                address: address.as_slice().to_vec(),
-                aead_encrypted_id: aead_id,
+        let wallet_id = conn
+            .exclusive_transaction(async |conn| {
+                let wallet_id: i32 = insert_into(schema::evm_wallet::table)
+                    .values(&models::NewEvmWallet {
+                        address: address.as_slice().to_vec(),
+                        aead_encrypted_id: aead_id,
+                    })
+                    .returning(schema::evm_wallet::id)
+                    .get_result(conn)
+                    .await
+                    .map_err(DatabaseError::from)
+                    .map_err(Error::Database)?;
+
+                integrity::sign_entity(
+                    conn,
+                    &self.vault,
+                    &EvmWalletIntegrity { address, aead_encrypted_id: aead_id },
+                    wallet_id,
+                )
+                .await
+                .map_err(Error::Integrity)?;
+
+                Ok::<i32, Error>(wallet_id)
             })
-            .returning(schema::evm_wallet::id)
-            .get_result(&mut conn)
-            .await
-            .map_err(DatabaseError::from)?;
+            .await?;
 
         Ok((wallet_id, address))
     }
 
     #[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())
@@ -241,16 +287,51 @@ impl EvmActor {
             .ok_or(SignTransactionError::WalletNotFound)?;
         drop(conn);
 
+        let mut conn = self.db.get().await.map_err(DatabaseError::from)?;
+        let attestation = integrity::verify_entity(
+            &mut conn,
+            &self.vault,
+            &EvmWalletIntegrity {
+                address: wallet_address,
+                aead_encrypted_id: wallet.aead_encrypted_id,
+            },
+            wallet.id.to_raw(),
+        )
+        .await
+        .map_err(|e| {
+            error!(?e, ?wallet.id, "EVM wallet integrity check failed");
+            SignTransactionError::Internal
+        })?;
+        drop(conn);
+
+        if attestation != integrity::AttestationStatus::Attested {
+            error!(
+                ?wallet.id,
+                "EVM wallet integrity unavailable; refusing to sign"
+            );
+            return Err(SignTransactionError::Internal);
+        }
+
         let raw_key: SafeCell<Vec<u8>> = self
             .vault
             .ask(Decrypt {
                 aead_id: wallet.aead_encrypted_id,
+                aad: wallet.address.clone(),
             })
             .await
             .map_err(|_| SignTransactionError::VaultSend)?;
 
         let signer = safe_signer::SafeSigner::from_cell(raw_key)?;
 
+        if signer.address() != wallet_address {
+            error!(
+                expected = %wallet_address,
+                actual = %signer.address(),
+                "Decrypted private key address does not match requested wallet"
+            );
+            return Err(SignTransactionError::KeyAddressMismatch);
+        }
+
         self.engine
             .evaluate_transaction(wallet_access, transaction.clone(), RunKind::Execution)
             .await?;

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

@@ -20,6 +20,8 @@ pub mod client_connect_approval;
 
 pub struct FlowCoordinator {
     pub clients: HashMap<ActorId, ActorRef<ClientSession>>,
+    /// Maps DB `client_id` → `ActorId` for fast connected-client lookup.
+    client_ids: HashMap<i32, ActorId>,
     operator_registry: ActorRef<OperatorRegistry>,
 }
 
@@ -27,6 +29,7 @@ impl FlowCoordinator {
     pub fn new(operator_registry: ActorRef<OperatorRegistry>) -> Self {
         Self {
             clients: HashMap::default(),
+            client_ids: HashMap::default(),
             operator_registry,
         }
     }
@@ -48,6 +51,7 @@ impl Actor for FlowCoordinator {
         _: ActorStopReason,
     ) -> Result<ControlFlow<ActorStopReason>, Self::Error> {
         if self.clients.remove(&id).is_some() {
+            self.client_ids.retain(|_, actor_id| *actor_id != id);
             info!(
                 ?id,
                 actor = "FlowCoordinator",
@@ -75,14 +79,28 @@ impl FlowCoordinator {
     #[message(ctx)]
     pub async fn register_client(
         &mut self,
+        client_id: i32,
         actor: ActorRef<ClientSession>,
         ctx: &mut Context<Self, ()>,
     ) {
-        info!(id = %actor.id(), actor = "FlowCoordinator", event = "client.connected");
+        info!(id = %actor.id(), client_id, actor = "FlowCoordinator", event = "client.connected");
         ctx.actor_ref().link(&actor).await;
+        self.client_ids.insert(client_id, actor.id());
         self.clients.insert(actor.id(), actor);
     }
 
+    #[message]
+    pub fn is_client_connected(&self, client_id: i32) -> bool {
+        self.client_ids.contains_key(&client_id)
+    }
+
+    /// Returns the DB `client_ids` of all currently connected SDK clients.
+    /// Used by operator sessions on startup to seed their approved-client set.
+    #[message]
+    pub fn get_connected_client_ids(&self) -> Vec<i32> {
+        self.client_ids.keys().copied().collect()
+    }
+
     #[message(ctx)]
     pub async fn request_client_approval(
         &mut self,

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

@@ -6,7 +6,7 @@ use crate::{
     },
     db::{
         self,
-        models::{self, RootKeyHistory},
+        models::{self, RootKeyHistory, RootKeyHistoryId},
         schema::{self},
     },
 };
@@ -22,10 +22,9 @@ use hmac::{KeyInit as _, Mac as _};
 use kameo::{Actor, Reply, actor::ActorRef, messages};
 use kameo_actors::message_bus::{MessageBus, Publish};
 use strum::{EnumDiscriminants, IntoDiscriminant};
-use tracing::{error, info};
+use tracing::{error, info, warn};
 
 pub mod events {
-
     #[derive(Clone, Copy)]
     pub struct Bootstrapped;
 
@@ -46,6 +45,8 @@ pub enum Error {
     Sealed,
     #[error("Invalid key provided")]
     InvalidKey,
+    #[error("Vault locked: too many failed unseal attempts")]
+    LockedOut,
 
     #[error("Requested aead entry not found")]
     NotFound,
@@ -61,10 +62,13 @@ pub enum Error {
 
     #[error("Broken database")]
     BrokenDatabase,
+
+    #[error("Integrity key version mismatch: envelope uses key {envelope:?}, current key is {current:?}")]
+    KeyVersionMismatch { envelope: RootKeyHistoryId, current: RootKeyHistoryId },
 }
 
 struct Unsealed {
-    root_key_history_id: i32,
+    root_key_history_id: RootKeyHistoryId,
     root_key: KeyCell,
 }
 
@@ -73,12 +77,15 @@ struct Unsealed {
 enum State {
     #[default]
     Unbootstrapped,
+
     Sealed {
-        root_key_history_id: i32,
+        root_key_history_id: RootKeyHistoryId,
     },
     Unsealed(Unsealed),
 }
 
+const MAX_UNSEAL_ATTEMPTS: u32 = 5;
+
 /// Manages vault root key and tracks current state of the vault (bootstrapped/unbootstrapped, sealed/unsealed).
 ///
 /// Provides API for encrypting and decrypting data using the vault root key.
@@ -88,6 +95,7 @@ pub struct Vault {
     db: db::DatabasePool,
     state: State,
     events: ActorRef<MessageBus>,
+    unseal_failures: u32,
 }
 
 #[messages]
@@ -110,12 +118,15 @@ impl Vault {
             }
         };
 
-        Ok(Self { db, state, events })
+        Ok(Self { db, state, events, unseal_failures: 0 })
     }
 
     // Exclusive transaction to avoid race condtions 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 +139,7 @@ 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
@@ -184,7 +195,7 @@ impl Vault {
         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(),
@@ -202,7 +213,9 @@ 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?;
 
@@ -219,6 +232,10 @@ impl Vault {
 
     #[message]
     pub async fn try_unseal(&mut self, seal_key_raw: SafeCell<Vec<u8>>) -> Result<(), Error> {
+        if self.unseal_failures >= MAX_UNSEAL_ATTEMPTS {
+            return Err(Error::LockedOut);
+        }
+
         let State::Sealed {
             root_key_history_id,
         } = &self.state
@@ -251,13 +268,27 @@ impl Vault {
                 Error::BrokenDatabase
             })?;
 
-        seal_key
+        if seal_key
             .decrypt_in_place(&nonce, v1::ROOT_KEY_TAG, &mut root_key)
-            .map_err(|err| {
-                error!(?err, "Failed to unseal root key: invalid seal key");
-                Error::InvalidKey
-            })?;
+            .is_err()
+        {
+            self.unseal_failures += 1;
+            if self.unseal_failures >= MAX_UNSEAL_ATTEMPTS {
+                error!(
+                    attempts = self.unseal_failures,
+                    "Vault locked: maximum failed unseal attempts reached"
+                );
+            } else {
+                warn!(
+                    attempts = self.unseal_failures,
+                    remaining = MAX_UNSEAL_ATTEMPTS - self.unseal_failures,
+                    "Failed unseal attempt"
+                );
+            }
+            return Err(Error::InvalidKey);
+        }
 
+        self.unseal_failures = 0;
         self.state = State::Unsealed(Unsealed {
             root_key_history_id: current_key.id,
             root_key: KeyCell::try_from(root_key).map_err(|err| {
@@ -272,8 +303,10 @@ impl Vault {
         Ok(())
     }
 
+    /// Decrypts an AEAD entry. The `aad` must match the value used at encryption time;
+    /// a mismatch causes authentication failure, preventing cross-wallet key swaps.
     #[message]
-    pub async fn decrypt(&mut self, aead_id: i32) -> Result<SafeCell<Vec<u8>>, Error> {
+    pub async fn decrypt(&mut self, aead_id: i32, aad: Vec<u8>) -> Result<SafeCell<Vec<u8>>, Error> {
         let Unsealed { root_key, .. } = Self::expect_unsealed(&mut self.state)?;
 
         let row: models::AeadEncrypted = {
@@ -295,13 +328,15 @@ impl Vault {
             Error::BrokenDatabase
         })?;
         let mut output = SafeCell::new(row.ciphertext);
-        root_key.decrypt_in_place(&nonce, v1::TAG, &mut output)?;
+        root_key.decrypt_in_place(&nonce, &aad, &mut output)?;
         Ok(output)
     }
 
+    /// Creates a new `aead_encrypted` entry and returns its ID.
+    /// The `aad` is bound into the ciphertext and must be reproduced exactly at decryption time.
     // Creates new `aead_encrypted` entry in the database and returns it's ID
     #[message]
-    pub async fn create_new(&mut self, mut plaintext: SafeCell<Vec<u8>>) -> Result<i32, Error> {
+    pub async fn create_new(&mut self, mut plaintext: SafeCell<Vec<u8>>, aad: Vec<u8>) -> Result<i32, Error> {
         let Unsealed {
             root_key,
             root_key_history_id,
@@ -313,7 +348,7 @@ impl Vault {
 
         let mut ciphertext_buffer = plaintext.write();
         let ciphertext_buffer: &mut Vec<u8> = ciphertext_buffer.as_mut();
-        root_key.encrypt_in_place(&nonce, v1::TAG, &mut *ciphertext_buffer)?;
+        root_key.encrypt_in_place(&nonce, &aad, &mut *ciphertext_buffer)?;
 
         let ciphertext = std::mem::take(ciphertext_buffer);
 
@@ -340,7 +375,10 @@ 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 +388,7 @@ 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 +400,7 @@ 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,
@@ -370,14 +408,17 @@ impl Vault {
         } = Self::expect_unsealed(&mut self.state)?;
 
         if *root_key_history_id != key_version {
-            return Ok(false);
+            return Err(Error::KeyVersionMismatch {
+                envelope: key_version,
+                current: *root_key_history_id,
+            });
         }
 
         let mut hmac = root_key.0.read_inline(|k| {
             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())
@@ -401,6 +442,7 @@ impl Vault {
 #[cfg(test)]
 mod tests {
     use crate::actors::GlobalActors;
+    use crate::db::models::RootKeyHistory;
     use arbiter_crypto::safecell::SafeCellHandle as _;
 
     use super::*;
@@ -445,7 +487,7 @@ mod tests {
         assert_eq!(root_row.data_encryption_nonce, n2.to_vec());
 
         let id = actor
-            .create_new(SafeCell::new(b"post-interleave".to_vec()))
+            .create_new(SafeCell::new(b"post-interleave".to_vec()), b"test-aad".to_vec())
             .await
             .unwrap();
         let row: models::AeadEncrypted = schema::aead_encrypted::table

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

@@ -1,4 +1,3 @@
-use argon2::password_hash::Salt as ArgonSalt;
 use rand::{
     Rng as _, SeedableRng,
     rngs::{StdRng, SysRng},
@@ -42,7 +41,7 @@ impl<'a> TryFrom<&'a [u8]> for Nonce {
     }
 }
 
-pub type Salt = [u8; ArgonSalt::RECOMMENDED_LENGTH];
+pub type Salt = [u8; argon2::RECOMMENDED_SALT_LEN];
 
 pub fn generate_salt() -> Salt {
     let mut salt = Salt::default();

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();
@@ -189,7 +192,9 @@ pub async fn verify_entity<E: Integrable>(
         Ok(false) => Err(Error::MacMismatch {
             entity_kind: E::KIND,
         }),
-        Err(SendError::HandlerError(vault::Error::Sealed)) => Ok(AttestationStatus::Unavailable),
+        Err(SendError::HandlerError(
+            vault::Error::Sealed | vault::Error::KeyVersionMismatch { .. },
+        )) => Ok(AttestationStatus::Unavailable),
         Err(_) => Err(Error::VaultSend),
     }
 }
@@ -214,13 +219,15 @@ mod tests {
     };
     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(
@@ -326,4 +333,47 @@ mod tests {
             .unwrap_err();
         assert!(matches!(err, Error::MacMismatch { .. }));
     }
+
+    #[tokio::test]
+    async fn key_version_mismatch_returns_unavailable_not_mac_mismatch() {
+        use crate::db::schema::integrity_envelope;
+        use super::AttestationStatus;
+
+        const ENTITY_ID: &[u8] = b"entity-id-rotation-test";
+
+        let db = db::create_test_pool().await;
+        let vault = bootstrapped_vault(&db).await;
+        let mut conn = db.get().await.unwrap();
+
+        let entity = DummyEntity {
+            payload_version: 1,
+            payload: b"payload-v1".to_vec(),
+        };
+
+        sign_entity(&mut conn, &vault, &entity, ENTITY_ID)
+            .await
+            .unwrap();
+
+        // Simulate key rotation: update the stored key_version to a stale value.
+        // After real rotation the vault's root_key_history_id would advance, but
+        // here we achieve the same mismatch by back-dating the envelope's key_version.
+        diesel::update(integrity_envelope::table)
+            .filter(integrity_envelope::entity_kind.eq("dummy_entity"))
+            .filter(integrity_envelope::entity_id.eq(ENTITY_ID))
+            .set(integrity_envelope::key_version.eq(0))
+            .execute(&mut conn)
+            .await
+            .unwrap();
+
+        // Must NOT error — version mismatch is Unavailable, not tampered.
+        let status = verify_entity(&mut conn, &vault, &entity, ENTITY_ID)
+            .await
+            .expect("key version mismatch must not be treated as an error");
+
+        assert_eq!(
+            status,
+            AttestationStatus::Unavailable,
+            "stale key_version must yield Unavailable, not MacMismatch"
+        );
+    }
 }

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

@@ -3,8 +3,8 @@ use encryption::v1::{Nonce, Salt};
 
 use argon2::{Algorithm, Argon2};
 use chacha20poly1305::{
-    AeadInPlace, Key, KeyInit as _, XChaCha20Poly1305, XNonce,
-    aead::{AeadMut, Error, Payload},
+    AeadInOut, Key, KeyInit as _, XChaCha20Poly1305, XNonce,
+    aead::{Aead, Error, Payload},
 };
 use rand::{
     Rng as _, SeedableRng as _,
@@ -54,9 +54,9 @@ impl KeyCell {
     ) -> Result<(), Error> {
         let key_reader = self.0.read();
         let cipher = XChaCha20Poly1305::new(&key_reader);
-        let nonce = XNonce::from_slice(nonce.0.as_ref());
+        let nonce = XNonce::from(nonce.0);
         let buffer = buffer.as_mut();
-        cipher.encrypt_in_place(nonce, associated_data, buffer)
+        cipher.encrypt_in_place(&nonce, associated_data, buffer)
     }
     pub fn decrypt_in_place(
         &mut self,
@@ -66,10 +66,10 @@ impl KeyCell {
     ) -> Result<(), Error> {
         let key_reader = self.0.read();
         let cipher = XChaCha20Poly1305::new(&key_reader);
-        let nonce = XNonce::from_slice(nonce.0.as_ref());
+        let nonce = XNonce::from(nonce.0);
         let mut buffer = buffer.write();
         let buffer: &mut Vec<u8> = buffer.as_mut();
-        cipher.decrypt_in_place(nonce, associated_data, buffer)
+        cipher.decrypt_in_place(&nonce, associated_data, buffer)
     }
 
     pub fn encrypt(
@@ -79,11 +79,11 @@ impl KeyCell {
         plaintext: impl AsRef<[u8]>,
     ) -> Result<Vec<u8>, Error> {
         let key_reader = self.0.read();
-        let mut cipher = XChaCha20Poly1305::new(&key_reader);
-        let nonce = XNonce::from_slice(nonce.0.as_ref());
+        let cipher = XChaCha20Poly1305::new(&key_reader);
+        let nonce = XNonce::from(nonce.0);
 
         let ciphertext = cipher.encrypt(
-            nonce,
+            &nonce,
             Payload {
                 msg: plaintext.as_ref(),
                 aad: associated_data,

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

@@ -79,10 +79,41 @@ 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,
@@ -103,21 +134,13 @@ 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)
-        }
-    }
-    impl ToSql<Integer, Sqlite> for ChainId {
-        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!(OperatorId);
+    declare_id!(OperatorIdentityId);
+    declare_id!(AeadEncryptedId);
+    declare_id!(RootKeyHistoryId);
+    declare_id!(TlsHistoryId);
+    declare_id!(EvmWalletId);
+    declare_id!(ClientId);
 }
 pub use types::*;
 
@@ -130,12 +153,12 @@ 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 +171,7 @@ 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 +189,7 @@ 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 +214,7 @@ 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 +236,7 @@ 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 +263,7 @@ 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 +273,22 @@ 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 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(
@@ -399,7 +432,7 @@ 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,

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

@@ -152,6 +152,25 @@ diesel::table! {
     }
 }
 
+diesel::table! {
+    operator (id) {
+        id -> Nullable<Integer>,
+        share -> Binary,
+        share_nonce -> 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! {
     program_client (id) {
         id -> Integer,
@@ -185,15 +204,6 @@ 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));
@@ -212,6 +222,7 @@ 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::allow_tables_to_appear_in_same_query!(
@@ -230,8 +241,9 @@ diesel::allow_tables_to_appear_in_same_query!(
     evm_wallet,
     evm_wallet_access,
     integrity_envelope,
+    operator,
+    operator_identity,
     program_client,
     root_key_history,
     tls_history,
-    operator_client,
 );

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

@@ -514,7 +514,8 @@ mod tests {
     use crate::db::{
         self, DatabaseConnection,
         models::{
-            EvmBasicGrant, EvmWalletAccess, NewEvmBasicGrant, NewEvmTransactionLog, SqliteTimestamp,
+            EvmBasicGrant, EvmWalletAccess, EvmWalletId, NewEvmBasicGrant, NewEvmTransactionLog,
+            SqliteTimestamp,
         },
         schema::{evm_basic_grant, evm_transaction_log},
     };
@@ -534,7 +535,7 @@ 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()),
             },
@@ -824,7 +825,7 @@ mod tests {
 
         let wallet_access = EvmWalletAccess {
             id: WALLET_ACCESS_ID,
-            wallet_id: 10,
+            wallet_id: EvmWalletId::from_raw(10),
             client_id: 20,
             created_at: SqliteTimestamp(Utc::now()),
         };

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()),
         },

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()),
         },

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

@@ -171,7 +171,7 @@ impl Receiver<auth::Inbound> for AuthTransportAdapter<'_> {
 
                 Some(auth::Inbound::AuthChallengeRequest {
                     pubkey,
-                    bootstrap_token,
+                    bootstrap_token: bootstrap_token.map(String::into_bytes),
                 })
             }
             AuthRequestPayload::ChallengeSolution(ProtoAuthChallengeSolution { signature }) => {

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(),
         }),
@@ -217,6 +217,11 @@ async fn handle_sign_transaction(
                 result: Some(vet_error.convert()),
             }
         }
+        Err(kameo::error::SendError::HandlerError(
+            SessionSignTransactionError::ClientNotConnected,
+        )) => {
+            return Err(Status::permission_denied("client not connected"));
+        }
         Err(kameo::error::SendError::HandlerError(SessionSignTransactionError::Internal)) => {
             EvmSignTransactionResponse {
                 result: Some(EvmSignTransactionResult::Error(

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::{
@@ -151,7 +150,7 @@ 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 +165,7 @@ 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_gate/outbound.rs

@@ -87,6 +87,7 @@ impl TryConvert for vault_gate::Outbound {
                 let proto_result = match result {
                     Ok(()) => ProtoUnsealResult::Success,
                     Err(vault_gate::Error::InvalidKey) => ProtoUnsealResult::InvalidKey,
+                    Err(vault_gate::Error::LockedOut) => ProtoUnsealResult::LockedOut,
                     Err(err) => {
                         warn!(?err, "unseal failed");
                         return Err(Status::internal("Failed to unseal vault"));

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

@@ -8,7 +8,7 @@ use crate::{
     crypto::integrity::{self, AttestationStatus},
     db::{
         self,
-        models::{ProgramClientMetadata, SqliteTimestamp},
+        models::ProgramClientMetadata,
         schema::program_client,
     },
 };
@@ -18,14 +18,13 @@ use arbiter_proto::{
     transport::{Bi, expect_message},
 };
 
-use chrono::Utc;
 use diesel::{
     ExpressionMethods as _, OptionalExtension as _, QueryDsl as _, SelectableHelper as _,
-    dsl::insert_into, update,
+    dsl::insert_into,
 };
 use diesel_async::RunQueryDsl as _;
 use kameo::{actor::ActorRef, error::SendError};
-use tracing::error;
+use tracing::{error, warn};
 
 #[derive(thiserror::Error, Debug, Clone, PartialEq, Eq)]
 pub enum Error {
@@ -211,71 +210,47 @@ async fn insert_client(
     .await
 }
 
-async fn sync_client_metadata(
+/// Compares stored metadata against what a reconnecting client presents.
+/// Metadata is frozen after initial operator approval and must not be silently
+/// overwritten. Doing so would let an approved client forge its displayed
+/// identity in later approval prompts. Drift is logged and ignored.
+async fn check_metadata_drift(
     db: &db::DatabasePool,
     client_id: i32,
-    metadata: &ClientMetadata,
+    presented: &ClientMetadata,
 ) -> Result<(), Error> {
-    use crate::db::schema::{client_metadata, client_metadata_history};
-
-    let now = SqliteTimestamp(Utc::now());
+    use crate::db::schema::client_metadata;
 
     let mut conn = db.get().await.map_err(|e| {
         error!(error = ?e, "Database pool error");
         Error::DatabasePoolUnavailable
     })?;
 
-    conn.exclusive_transaction(async |conn| {
-        let (current_metadata_id, current): (i32, ProgramClientMetadata) = program_client::table
-            .find(client_id)
-            .inner_join(client_metadata::table)
-            .select((
-                program_client::metadata_id,
-                ProgramClientMetadata::as_select(),
-            ))
-            .first(&mut *conn)
-            .await?;
+    let current: ProgramClientMetadata = program_client::table
+        .find(client_id)
+        .inner_join(client_metadata::table)
+        .select(ProgramClientMetadata::as_select())
+        .first(&mut conn)
+        .await
+        .map_err(|e| {
+            error!(error = ?e, "Database error");
+            Error::DatabaseOperationFailed
+        })?;
 
-        let unchanged = current.name == metadata.name
-            && current.description == metadata.description
-            && current.version == metadata.version;
-        if unchanged {
-            return Ok(());
-        }
+    let changed = current.name != presented.name
+        || current.description != presented.description
+        || current.version != presented.version;
 
-        insert_into(client_metadata_history::table)
-            .values((
-                client_metadata_history::metadata_id.eq(current_metadata_id),
-                client_metadata_history::client_id.eq(client_id),
-            ))
-            .execute(&mut *conn)
-            .await?;
+    if changed {
+        warn!(
+            client_id,
+            stored_name = %current.name,
+            presented_name = %presented.name,
+            "reconnecting client presented different metadata; ignoring - metadata is frozen after operator approval"
+        );
+    }
 
-        let metadata_id = insert_into(client_metadata::table)
-            .values((
-                client_metadata::name.eq(&metadata.name),
-                client_metadata::description.eq(&metadata.description),
-                client_metadata::version.eq(&metadata.version),
-            ))
-            .returning(client_metadata::id)
-            .get_result::<i32>(&mut *conn)
-            .await?;
-
-        update(program_client::table.find(client_id))
-            .set((
-                program_client::metadata_id.eq(metadata_id),
-                program_client::updated_at.eq(now),
-            ))
-            .execute(&mut *conn)
-            .await?;
-
-        Ok::<(), diesel::result::Error>(())
-    })
-    .await
-    .map_err(|e| {
-        error!(error = ?e, "Database error");
-        Error::DatabaseOperationFailed
-    })
+    Ok(())
 }
 
 async fn challenge_client<T>(
@@ -324,6 +299,7 @@ where
 
     let client_id = if let Some(id) = get_client_id(&props.db, &pubkey).await? {
         verify_integrity(&props.db, &props.actors.vault, &pubkey).await?;
+        check_metadata_drift(&props.db, id, &metadata).await?;
         id
     } else {
         approve_new_client(
@@ -337,8 +313,6 @@ where
         insert_client(&props.db, &props.actors.vault, &pubkey, &metadata).await?
     };
 
-    sync_client_metadata(&props.db, client_id, &metadata).await?;
-
     let challenge = AuthChallenge::generate(&mut rand::rng());
     challenge_client(transport, pubkey, challenge).await?;
 

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/client/session.rs

@@ -83,7 +83,7 @@ impl Actor for ClientSession {
         args.props
             .actors
             .flow_coordinator
-            .ask(RegisterClient { actor: this })
+            .ask(RegisterClient { client_id: args.client_id, actor: this })
             .await
             .map_err(|_| Error::ConnectionRegistrationFailed)?;
         Ok(args)

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

@@ -14,7 +14,7 @@ mod state;
 pub enum Inbound {
     AuthChallengeRequest {
         pubkey: authn::PublicKey,
-        bootstrap_token: Option<String>,
+        bootstrap_token: Option<Vec<u8>>,
     },
     AuthChallengeSolution {
         signature: Vec<u8>,

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

@@ -4,7 +4,7 @@ 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};
@@ -16,13 +16,12 @@ use tracing::error;
 
 pub(super) struct ChallengeRequest {
     pub(super) pubkey: authn::PublicKey,
-    pub(super) bootstrap_token: Option<String>,
+    pub(super) bootstrap_token: Option<Vec<u8>>,
 }
 
 pub struct ChallengeContext {
     pub(super) challenge: AuthChallenge,
     pub(super) pubkey: authn::PublicKey,
-    pub(super) bootstrap_token: Option<String>,
 }
 
 pub(super) struct ChallengeSolution {
@@ -44,9 +43,9 @@ 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 +62,9 @@ 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| {
@@ -79,11 +78,16 @@ async fn register_key(db: &DatabasePool, pubkey: &authn::PublicKey) -> Result<i3
 pub(super) struct AuthContext<'a, T: ?Sized> {
     pub(super) conn: &'a mut OperatorConnection,
     pub(super) transport: &'a mut T,
+    bootstrap_token: Option<Vec<u8>>,
 }
 
 impl<'a, T: ?Sized> AuthContext<'a, T> {
     pub(super) const fn new(conn: &'a mut OperatorConnection, transport: &'a mut T) -> Self {
-        Self { conn, transport }
+        Self {
+            conn,
+            transport,
+            bootstrap_token: None,
+        }
     }
 }
 
@@ -108,6 +112,8 @@ where
             }
         }
 
+        self.bootstrap_token = bootstrap_token;
+
         let challenge = AuthChallenge::generate(&mut rand::rng());
 
         self.transport
@@ -120,20 +126,12 @@ where
                 Error::Transport
             })?;
 
-        Ok(ChallengeContext {
-            challenge,
-            pubkey,
-            bootstrap_token,
-        })
+        Ok(ChallengeContext { challenge, pubkey })
     }
 
     async fn verify_solution(
         &mut self,
-        ChallengeContext {
-            challenge,
-            pubkey,
-            bootstrap_token,
-        }: &ChallengeContext,
+        ChallengeContext { challenge, pubkey }: &ChallengeContext,
         ChallengeSolution { solution }: ChallengeSolution,
     ) -> Result<Credentials, Self::Error> {
         let signature = authn::Signature::try_from(solution.as_slice()).map_err(|()| {
@@ -152,15 +150,13 @@ where
         }
 
         // Resolve client id: bootstrap (consume token + register) or lookup
-        let id = match bootstrap_token {
+        let id = match self.bootstrap_token.take() {
             Some(token) => {
                 let token_ok: bool = self
                     .conn
                     .actors
                     .bootstrapper
-                    .ask(ConsumeToken {
-                        token: token.clone(),
-                    })
+                    .ask(ConsumeToken { token })
                     .await
                     .map_err(|e| {
                         error!(?e, "Failed to consume bootstrap token");

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 {

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

@@ -1,12 +1,19 @@
 use super::{Error, OperatorSession};
 use crate::{
-    actors::evm::{
-        ClientSignTransaction, Generate, ListWallets, OperatorCreateGrant, OperatorListGrants,
-        SignTransactionError as EvmSignError,
+    actors::{
+        evm::{
+            ClientSignTransaction, Generate, ListWallets, OperatorCreateGrant, OperatorListGrants,
+            SignTransactionError as EvmSignError,
+        },
+        flow_coordinator::{IsClientConnected, client_connect_approval::ClientApprovalAnswer},
+        vault::VaultState,
+    },
+    db::{
+        models::{
+            EvmWalletAccess, EvmWalletId, NewEvmWalletAccess, ProgramClient, ProgramClientMetadata,
+        },
+        schema::program_client,
     },
-    actors::flow_coordinator::client_connect_approval::ClientApprovalAnswer,
-    actors::vault::VaultState,
-    db::models::{EvmWalletAccess, NewEvmWalletAccess, ProgramClient, ProgramClientMetadata},
     evm::policies::{Grant, SpecificGrant},
 };
 use arbiter_crypto::authn;
@@ -15,13 +22,16 @@ use alloy::{consensus::TxEip1559, primitives::Address, signers::Signature};
 use diesel::{ExpressionMethods as _, QueryDsl as _, SelectableHelper};
 use diesel_async::{AsyncConnection, RunQueryDsl};
 use kameo::{error::SendError, messages, prelude::Context};
-use tracing::error;
+use tracing::{error, info, warn};
 
 #[derive(Debug, Error)]
 pub enum SignTransactionError {
     #[error("Policy evaluation failed")]
     Vet(#[from] crate::evm::VetError),
 
+    #[error("Client not connected")]
+    ClientNotConnected,
+
     #[error("Internal signing error")]
     Internal,
 }
@@ -70,7 +80,9 @@ 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) => {
@@ -141,6 +153,30 @@ impl OperatorSession {
         wallet_address: Address,
         transaction: TxEip1559,
     ) -> Result<Signature, SignTransactionError> {
+        if !self.approved_client_ids.contains(&client_id) {
+            warn!(
+                client_id,
+                "operator attempted to sign for client not in its approved set"
+            );
+            return Err(SignTransactionError::ClientNotConnected);
+        }
+
+        let connected = self
+            .props
+            .actors
+            .flow_coordinator
+            .ask(IsClientConnected { client_id })
+            .await
+            .unwrap_or(false);
+
+        if !connected {
+            self.approved_client_ids.remove(&client_id);
+            warn!(client_id, "operator attempted to sign for disconnected client");
+            return Err(SignTransactionError::ClientNotConnected);
+        }
+
+        info!(client_id, event = "sign_transaction", "operator.sign_transaction");
+
         match self
             .props
             .actors
@@ -196,7 +232,7 @@ impl OperatorSession {
             use crate::db::schema::evm_wallet_access;
             for entry in entries {
                 diesel::delete(evm_wallet_access::table)
-                    .filter(evm_wallet_access::wallet_id.eq(entry))
+                    .filter(evm_wallet_access::id.eq(entry))
                     .execute(&mut *conn)
                     .await?;
             }
@@ -249,6 +285,30 @@ impl OperatorSession {
 
         ctx.actor_ref().unlink(&pending_approval.controller).await;
 
+        if approved {
+            let pubkey_bytes = pending_approval.pubkey.to_bytes();
+            match self.props.db.get().await {
+                Ok(mut conn) => {
+                    match program_client::table
+                        .filter(program_client::public_key.eq(pubkey_bytes.as_slice()))
+                        .select(program_client::id)
+                        .first::<i32>(&mut conn)
+                        .await
+                    {
+                        Ok(client_id) => {
+                            self.approved_client_ids.insert(client_id);
+                        }
+                        Err(err) => {
+                            error!(?err, "Failed to look up client_id for approved pubkey");
+                        }
+                    }
+                }
+                Err(err) => {
+                    error!(?err, "DB pool error after client approval");
+                }
+            }
+        }
+
         Ok(())
     }
 
@@ -271,3 +331,142 @@ impl OperatorSession {
         Ok(clients)
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::db::{self, models::{EvmWalletId, NewEvmWalletAccess}, schema::evm_wallet_access};
+    use diesel::{ExpressionMethods as _, QueryDsl as _, SelectableHelper};
+    use diesel_async::{AsyncConnection, RunQueryDsl};
+
+    /// Regression test: revocation must delete by access-entry `id`, not by `wallet_id`.
+    ///
+    /// Before the fix, revoking `entry_id=1` would delete all rows where `wallet_id=1`,
+    /// wiping out every client's access to wallet #1.
+    #[tokio::test]
+    async fn revoke_deletes_by_entry_id_not_wallet_id() {
+        use crate::db::models::EvmWalletAccess;
+
+        let pool = db::create_test_pool().await;
+        let mut conn = pool.get().await.expect("pool connection");
+
+        // Insert two access entries for the same wallet but different clients.
+        // entry A: id will be 1, wallet_id=1, client_id=10
+        // entry B: id will be 2, wallet_id=1, client_id=20
+        let entry_a = diesel::insert_into(evm_wallet_access::table)
+            .values(NewEvmWalletAccess {
+                wallet_id: EvmWalletId::from_raw(1),
+                client_id: 10,
+            })
+            .returning(EvmWalletAccess::as_select())
+            .get_result(&mut *conn)
+            .await
+            .expect("insert entry A");
+
+        let entry_b = diesel::insert_into(evm_wallet_access::table)
+            .values(NewEvmWalletAccess {
+                wallet_id: EvmWalletId::from_raw(1),
+                client_id: 20,
+            })
+            .returning(EvmWalletAccess::as_select())
+            .get_result(&mut *conn)
+            .await
+            .expect("insert entry B");
+
+        // Revoke only entry A by its primary key id.
+        conn.transaction(async |conn| {
+            diesel::delete(evm_wallet_access::table)
+                .filter(evm_wallet_access::id.eq(entry_a.id))
+                .execute(&mut *conn)
+                .await
+        })
+        .await
+        .expect("revoke entry A");
+
+        // Entry A must be gone.
+        let gone = evm_wallet_access::table
+            .filter(evm_wallet_access::id.eq(entry_a.id))
+            .count()
+            .get_result::<i64>(&mut *conn)
+            .await
+            .expect("count entry A");
+        assert_eq!(gone, 0, "revoked entry must be deleted");
+
+        // Entry B (same wallet, different client) must still exist.
+        let still_there = evm_wallet_access::table
+            .filter(evm_wallet_access::id.eq(entry_b.id))
+            .count()
+            .get_result::<i64>(&mut *conn)
+            .await
+            .expect("count entry B");
+        assert_eq!(still_there, 1, "unrelated entry must not be deleted");
+    }
+
+    /// Regression test: when `entry_id` and `wallet_id` differ, only the correct row is removed.
+    ///
+    /// This specifically catches the case where `entry.id=5` and `wallet_id=1` are different values;
+    /// the old bug would delete by `wallet_id`, potentially matching a completely different entry.
+    #[tokio::test]
+    async fn revoke_with_mismatched_wallet_and_entry_ids() {
+        use crate::db::models::EvmWalletAccess;
+
+        let pool = db::create_test_pool().await;
+        let mut conn = pool.get().await.expect("pool connection");
+
+        // Insert entries to force auto-increment IDs to diverge from wallet_ids.
+        // We'll insert 5 placeholder entries first so that the real entry gets id=6.
+        for i in 1_i32..=5 {
+            diesel::insert_into(evm_wallet_access::table)
+                .values(NewEvmWalletAccess {
+                    wallet_id: EvmWalletId::from_raw(99),
+                    client_id: i,
+                })
+                .execute(&mut *conn)
+                .await
+                .expect("insert placeholder");
+        }
+
+        // Real target: wallet_id=1, will get id=6.
+        let target = diesel::insert_into(evm_wallet_access::table)
+            .values(NewEvmWalletAccess {
+                wallet_id: EvmWalletId::from_raw(1),
+                client_id: 1,
+            })
+            .returning(EvmWalletAccess::as_select())
+            .get_result(&mut *conn)
+            .await
+            .expect("insert target");
+
+        // Sanity: target.id != target.wallet_id
+        assert_ne!(
+            target.id, target.wallet_id.to_raw(),
+            "test prerequisite: id and wallet_id must differ"
+        );
+
+        // Revoke by entry id.
+        conn.transaction(async |conn| {
+            diesel::delete(evm_wallet_access::table)
+                .filter(evm_wallet_access::id.eq(target.id))
+                .execute(&mut *conn)
+                .await
+        })
+        .await
+        .expect("revoke target");
+
+        let remaining = evm_wallet_access::table
+            .filter(evm_wallet_access::id.eq(target.id))
+            .count()
+            .get_result::<i64>(&mut *conn)
+            .await
+            .expect("count target");
+        assert_eq!(remaining, 0, "target must be deleted by its entry id");
+
+        // Placeholders for wallet_id=99 must be untouched.
+        let placeholders = evm_wallet_access::table
+            .filter(evm_wallet_access::wallet_id.eq(99))
+            .count()
+            .get_result::<i64>(&mut *conn)
+            .await
+            .expect("count placeholders");
+        assert_eq!(placeholders, 5, "unrelated entries must survive");
+    }
+}

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

@@ -1,16 +1,14 @@
 use super::{OutOfBand, OperatorConnection};
 use crate::{
     actors::{
-        flow_coordinator::client_connect_approval::{ClientApprovalAnswer, ClientApprovalController},
-        operator_registry::ConnectOperator,
-    },
-    peers::client::ClientProfile,
+        flow_coordinator::{GetConnectedClientIds, client_connect_approval::{ClientApprovalAnswer, ClientApprovalController}}, operator_registry::ConnectOperator,
+    }, peers::client::ClientProfile,
 };
 use arbiter_crypto::authn;
 use arbiter_proto::transport::Sender;
 
 use kameo::{Actor, actor::ActorRef, messages};
-use std::{borrow::Cow, collections::HashMap};
+use std::{borrow::Cow, collections::{HashMap, HashSet}};
 use thiserror::Error;
 use tracing::error;
 
@@ -54,6 +52,10 @@ pub struct OperatorSession {
     sender: Box<dyn Sender<OutOfBand>>,
 
     pending_client_approvals: HashMap<Vec<u8>, PendingClientApproval>,
+    /// DB `client_ids` this operator session is allowed to sign for.
+    /// Seeded from currently-connected clients on start, then updated as
+    /// approvals are granted or denied during the session lifetime.
+    approved_client_ids: HashSet<i32>,
 }
 
 pub mod handlers;
@@ -64,6 +66,7 @@ impl OperatorSession {
             props,
             sender,
             pending_client_approvals: HashMap::default(),
+            approved_client_ids: HashSet::default(),
         }
     }
 }
@@ -107,7 +110,7 @@ impl Actor for OperatorSession {
 
     type Error = Error;
 
-    async fn on_start(args: Self::Args, this: ActorRef<Self>) -> Result<Self, Self::Error> {
+    async fn on_start(mut args: Self::Args, this: ActorRef<Self>) -> Result<Self, Self::Error> {
         args.props
             .actors
             .operator_registry
@@ -122,6 +125,16 @@ impl Actor for OperatorSession {
                 );
                 Error::internal("Failed to register operator connection with operator registry")
             })?;
+
+        // Seed approved set with clients already connected when this session starts.
+        // New clients will be added via handle_new_client_approve as they are approved.
+        match args.props.actors.flow_coordinator.ask(GetConnectedClientIds {}).await {
+            Ok(ids) => args.approved_client_ids.extend(ids),
+            Err(err) => {
+                error!(?err, "Failed to fetch connected client IDs on operator session start");
+            }
+        }
+
         Ok(args)
     }
 

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

@@ -10,7 +10,7 @@ use crate::{
 use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
 use state::State;
 
-use chacha20poly1305::{AeadInPlace, KeyInit as _, XChaCha20Poly1305, XNonce};
+use chacha20poly1305::{AeadInOut, KeyInit as _, XChaCha20Poly1305, XNonce};
 use kameo::{Actor, error::SendError, messages, prelude::Message};
 use kameo_actors::message_bus::Register;
 use tokio::sync::oneshot;
@@ -25,6 +25,8 @@ pub enum Error {
     AlreadyBootstrapped,
     #[error("Invalid key provided")]
     InvalidKey,
+    #[error("Vault locked: too many failed unseal attempts")]
+    LockedOut,
 
     #[error("State transition failed")]
     State,
@@ -99,14 +101,17 @@ impl VaultGate {
         ciphertext: &[u8],
         associated_data: &[u8],
     ) -> Result<SafeCell<Vec<u8>>, ()> {
-        let nonce = XNonce::from_slice(nonce);
+        let Ok(nonce) = XNonce::try_from(nonce) else {
+            error!("Encrypted key material carries a nonce of the wrong length");
+            return Err(());
+        };
 
         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| {
-            cipher.decrypt_in_place(nonce, associated_data, write_handle)
+            cipher.decrypt_in_place(&nonce, associated_data, write_handle)
         });
 
         match decryption_result {
@@ -170,6 +175,7 @@ impl VaultGate {
                 Ok(())
             }
             Err(SendError::HandlerError(vault::Error::InvalidKey)) => Err(Error::InvalidKey),
+            Err(SendError::HandlerError(vault::Error::LockedOut)) => Err(Error::LockedOut),
             Err(SendError::HandlerError(err)) => {
                 error!(?err, "Vault failed to unseal key");
                 Err(Error::InvalidKey)

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

@@ -16,7 +16,7 @@ use arbiter_server::{
 
 use diesel::{ExpressionMethods as _, NullableExpressionMethods as _, QueryDsl as _, insert_into};
 use diesel_async::RunQueryDsl;
-use ml_dsa::{KeyGen, MlDsa87, SigningKey, VerifyingKey, signature::Keypair};
+use ml_dsa::{Generate as _, MlDsa87, SigningKey, VerifyingKey, signature::Keypair};
 
 fn metadata(name: &str, description: Option<&str>, version: Option<&str>) -> ClientMetadata {
     ClientMetadata {
@@ -73,7 +73,7 @@ async fn insert_registered_client(
 
 fn sign_client_challenge(key: &SigningKey<MlDsa87>, challenge: &AuthChallenge) -> authn::Signature {
     let challenge = challenge.format();
-    key.signing_key()
+    key.expanded_key()
         .sign_deterministic(&challenge, CLIENT_CONTEXT)
         .unwrap()
         .into()
@@ -81,13 +81,13 @@ fn sign_client_challenge(key: &SigningKey<MlDsa87>, challenge: &AuthChallenge) -
 
 async fn insert_bootstrap_sentinel_operator(db: &db::DatabasePool) {
     let mut conn = db.get().await.unwrap();
-    let sentinel_key = verifying_key(&MlDsa87::key_gen(&mut rand::rng()))
+    let sentinel_key = verifying_key(&SigningKey::<MlDsa87>::generate())
         .encode()
         .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();
@@ -120,7 +120,7 @@ pub async fn unregistered_pubkey_rejected() {
         connect_client(props, &mut server_transport).await;
     });
 
-    let new_key = MlDsa87::key_gen(&mut rand::rng());
+    let new_key = SigningKey::<MlDsa87>::generate();
 
     test_transport
         .send(auth::Inbound::AuthChallengeRequest {
@@ -140,7 +140,7 @@ pub async fn challenge_auth() {
     let db = db::create_test_pool().await;
     let actors = spawn_test_actors(&db).await;
 
-    let new_key = MlDsa87::key_gen(&mut rand::rng());
+    let new_key = SigningKey::<MlDsa87>::generate();
 
     Box::pin(insert_registered_client(
         &db,
@@ -206,7 +206,7 @@ pub async fn challenge_auth() {
 pub async fn metadata_unchanged_does_not_append_history() {
     let db = db::create_test_pool().await;
     let actors = spawn_test_actors(&db).await;
-    let new_key = MlDsa87::key_gen(&mut rand::rng());
+    let new_key = SigningKey::<MlDsa87>::generate();
     let requested = metadata("client", Some("desc"), Some("1.0.0"));
 
     Box::pin(insert_registered_client(
@@ -266,10 +266,10 @@ pub async fn metadata_unchanged_does_not_append_history() {
 
 #[tokio::test]
 #[test_log::test]
-pub async fn metadata_change_appends_history_and_repoints_binding() {
+pub async fn metadata_frozen_after_approval_ignores_reconnect_changes() {
     let db = db::create_test_pool().await;
     let actors = spawn_test_actors(&db).await;
-    let new_key = MlDsa87::key_gen(&mut rand::rng());
+    let new_key = SigningKey::<MlDsa87>::generate();
 
     Box::pin(insert_registered_client(
         &db,
@@ -287,6 +287,7 @@ pub async fn metadata_change_appends_history_and_repoints_binding() {
         connect_client(props, &mut server_transport).await;
     });
 
+    // Reconnect presenting different metadata — must be silently ignored.
     test_transport
         .send(auth::Inbound::AuthChallengeRequest {
             pubkey: verifying_key(&new_key).into(),
@@ -313,6 +314,7 @@ pub async fn metadata_change_appends_history_and_repoints_binding() {
             client_metadata, client_metadata_history, program_client,
         };
         let mut conn = db.get().await.unwrap();
+        // Metadata is frozen: no new row, no history entry.
         let metadata_count: i64 = client_metadata::table
             .count()
             .get_result(&mut conn)
@@ -338,15 +340,16 @@ pub async fn metadata_change_appends_history_and_repoints_binding() {
             .first::<(String, Option<String>, Option<String>)>(&mut conn)
             .await
             .unwrap();
-        assert_eq!(metadata_count, 2);
-        assert_eq!(history_count, 1);
+        assert_eq!(metadata_count, 1, "frozen: no new metadata row on reconnect");
+        assert_eq!(history_count, 0, "frozen: no history entry on reconnect");
         assert_eq!(
             current,
             (
                 "client".to_owned(),
-                Some("new".to_owned()),
-                Some("2.0.0".to_owned())
-            )
+                Some("old".to_owned()),
+                Some("1.0.0".to_owned())
+            ),
+            "frozen: original metadata must be preserved"
         );
     }
 }
@@ -357,7 +360,7 @@ pub async fn challenge_auth_rejects_integrity_tag_mismatch() {
     let db = db::create_test_pool().await;
     let actors = spawn_test_actors(&db).await;
 
-    let new_key = MlDsa87::key_gen(&mut rand::rng());
+    let new_key = SigningKey::<MlDsa87>::generate();
     let requested = metadata("client", Some("desc"), Some("1.0.0"));
 
     {

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

@@ -14,7 +14,7 @@ use arbiter_server::{
 use async_trait::async_trait;
 use diesel::{ExpressionMethods as _, QueryDsl, insert_into};
 use diesel_async::RunQueryDsl;
-use ml_dsa::{KeyGen, MlDsa87, SigningKey, VerifyingKey, signature::Keypair};
+use ml_dsa::{Generate as _, MlDsa87, SigningKey, VerifyingKey, signature::Keypair};
 use tokio::sync::mpsc;
 
 fn verifying_key(key: &SigningKey<MlDsa87>) -> VerifyingKey<MlDsa87> {
@@ -26,7 +26,7 @@ fn sign_operator_challenge(
     challenge: &AuthChallenge,
 ) -> authn::Signature {
     let challenge = challenge.format();
-    key.signing_key()
+    key.expanded_key()
         .sign_deterministic(&challenge, OPERATOR_CONTEXT)
         .unwrap()
         .into()
@@ -170,11 +170,11 @@ pub async fn bootstrap_token_auth() {
         auth::authenticate(&mut props, &mut server_transport).await
     });
 
-    let new_key = MlDsa87::key_gen(&mut rand::rng());
+    let new_key = SigningKey::<MlDsa87>::generate();
     test_transport
         .send(auth::Inbound::AuthChallengeRequest {
             pubkey: verifying_key(&new_key).into(),
-            bootstrap_token: Some(token),
+            bootstrap_token: Some(token.into_bytes()),
         })
         .await
         .unwrap();
@@ -206,8 +206,8 @@ 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();
@@ -227,11 +227,11 @@ pub async fn bootstrap_invalid_token_auth() {
         auth::authenticate(&mut props, &mut server_transport).await
     });
 
-    let new_key = MlDsa87::key_gen(&mut rand::rng());
+    let new_key = SigningKey::<MlDsa87>::generate();
     test_transport
         .send(auth::Inbound::AuthChallengeRequest {
             pubkey: verifying_key(&new_key).into(),
-            bootstrap_token: Some("invalid_token".to_owned()),
+            bootstrap_token: Some(b"invalid_token".to_vec()),
         })
         .await
         .unwrap();
@@ -259,7 +259,7 @@ 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
@@ -280,14 +280,14 @@ pub async fn challenge_auth() {
         .await
         .unwrap();
 
-    let new_key = MlDsa87::key_gen(&mut rand::rng());
+    let new_key = SigningKey::<MlDsa87>::generate();
     let pubkey_bytes = authn::PublicKey::from(verifying_key(&new_key)).to_bytes();
 
     {
         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();
@@ -366,13 +366,13 @@ pub async fn challenge_auth_rejects_integrity_tag_mismatch_when_unsealed() {
         .await
         .unwrap();
 
-    let new_key = MlDsa87::key_gen(&mut rand::rng());
+    let new_key = SigningKey::<MlDsa87>::generate();
     let pubkey_bytes = authn::PublicKey::from(verifying_key(&new_key)).to_bytes();
 
     {
         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();
@@ -439,14 +439,14 @@ pub async fn challenge_auth_rejects_invalid_signature() {
         .await
         .unwrap();
 
-    let new_key = MlDsa87::key_gen(&mut rand::rng());
+    let new_key = SigningKey::<MlDsa87>::generate();
     let pubkey_bytes = authn::PublicKey::from(verifying_key(&new_key)).to_bytes();
 
     {
         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

@@ -16,7 +16,7 @@ use arbiter_server::{
     },
 };
 
-use chacha20poly1305::{AeadInPlace, XChaCha20Poly1305, XNonce, aead::KeyInit};
+use chacha20poly1305::{AeadInOut, XChaCha20Poly1305, XNonce, aead::KeyInit};
 use kameo::actor::Spawn as _;
 use tokio::sync::oneshot;
 use x25519_dalek::{EphemeralSecret, PublicKey};

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

@@ -14,6 +14,8 @@ use kameo::actor::{ActorRef, Spawn as _};
 use std::collections::{HashMap, HashSet};
 use tokio::task::JoinSet;
 
+const TEST_AAD: &[u8] = b"test-aad";
+
 async fn write_concurrently(
     actor: ActorRef<Vault>,
     prefix: &'static str,
@@ -27,6 +29,7 @@ async fn write_concurrently(
             let id = actor
                 .ask(CreateNew {
                     plaintext: SafeCell::new(plaintext.clone()),
+                    aad: TEST_AAD.to_vec(),
                 })
                 .await
                 .unwrap();
@@ -120,7 +123,7 @@ async fn insert_failure_does_not_create_partial_row() {
     drop(conn);
 
     let err = actor
-        .create_new(SafeCell::new(b"should fail".to_vec()))
+        .create_new(SafeCell::new(b"should fail".to_vec()), TEST_AAD.to_vec())
         .await
         .unwrap_err();
     assert!(matches!(err, Error::DatabaseTransaction(_)));
@@ -171,7 +174,7 @@ async fn decrypt_roundtrip_after_high_concurrency() {
         .unwrap();
 
     for (id, plaintext) in expected {
-        let mut decrypted = decryptor.decrypt(id).await.unwrap();
+        let mut decrypted = decryptor.decrypt(id, TEST_AAD.to_vec()).await.unwrap();
         assert_eq!(*decrypted.read(), plaintext);
     }
 }

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

@@ -12,6 +12,8 @@ use arbiter_server::{
 use diesel::{QueryDsl, SelectableHelper};
 use diesel_async::RunQueryDsl;
 
+const TEST_AAD: &[u8] = b"test-aad";
+
 #[tokio::test]
 #[test_log::test]
 async fn bootstrap() {
@@ -57,7 +59,7 @@ async fn create_new_before_bootstrap_fails() {
         .unwrap();
 
     let err = actor
-        .create_new(SafeCell::new(b"data".to_vec()))
+        .create_new(SafeCell::new(b"data".to_vec()), TEST_AAD.to_vec())
         .await
         .unwrap_err();
     assert!(matches!(err, Error::NotBootstrapped));
@@ -71,7 +73,7 @@ async fn decrypt_before_bootstrap_fails() {
         .await
         .unwrap();
 
-    let err = actor.decrypt(1).await.unwrap_err();
+    let err = actor.decrypt(1, TEST_AAD.to_vec()).await.unwrap_err();
     assert!(matches!(err, Error::NotBootstrapped));
 }
 
@@ -85,7 +87,7 @@ async fn new_restores_sealed_state() {
     let mut actor2 = Vault::new(db, GlobalActors::spawn_message_bus())
         .await
         .unwrap();
-    let err = actor2.decrypt(1).await.unwrap_err();
+    let err = actor2.decrypt(1, TEST_AAD.to_vec()).await.unwrap_err();
     assert!(matches!(err, Error::Sealed));
 }
 
@@ -97,7 +99,7 @@ async fn unseal_correct_password() {
 
     let plaintext = b"survive a restart";
     let aead_id = actor
-        .create_new(SafeCell::new(plaintext.to_vec()))
+        .create_new(SafeCell::new(plaintext.to_vec()), TEST_AAD.to_vec())
         .await
         .unwrap();
     drop(actor);
@@ -108,7 +110,7 @@ async fn unseal_correct_password() {
     let seal_key = SafeCell::new(b"test-seal-key".to_vec());
     actor.try_unseal(seal_key).await.unwrap();
 
-    let mut decrypted = actor.decrypt(aead_id).await.unwrap();
+    let mut decrypted = actor.decrypt(aead_id, TEST_AAD.to_vec()).await.unwrap();
     assert_eq!(*decrypted.read(), plaintext);
 }
 
@@ -120,7 +122,7 @@ async fn unseal_wrong_then_correct_password() {
 
     let plaintext = b"important data";
     let aead_id = actor
-        .create_new(SafeCell::new(plaintext.to_vec()))
+        .create_new(SafeCell::new(plaintext.to_vec()), TEST_AAD.to_vec())
         .await
         .unwrap();
     drop(actor);
@@ -136,6 +138,6 @@ async fn unseal_wrong_then_correct_password() {
     let good_key = SafeCell::new(b"test-seal-key".to_vec());
     actor.try_unseal(good_key).await.unwrap();
 
-    let mut decrypted = actor.decrypt(aead_id).await.unwrap();
+    let mut decrypted = actor.decrypt(aead_id, TEST_AAD.to_vec()).await.unwrap();
     assert_eq!(*decrypted.read(), plaintext);
 }

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

@@ -10,6 +10,8 @@ use diesel::{ExpressionMethods as _, QueryDsl, SelectableHelper, dsl::update};
 use diesel_async::RunQueryDsl;
 use std::collections::HashSet;
 
+const TEST_AAD: &[u8] = b"test-aad";
+
 #[tokio::test]
 #[test_log::test]
 async fn create_decrypt_roundtrip() {
@@ -18,11 +20,11 @@ async fn create_decrypt_roundtrip() {
 
     let plaintext = b"hello arbiter";
     let aead_id = actor
-        .create_new(SafeCell::new(plaintext.to_vec()))
+        .create_new(SafeCell::new(plaintext.to_vec()), TEST_AAD.to_vec())
         .await
         .unwrap();
 
-    let mut decrypted = actor.decrypt(aead_id).await.unwrap();
+    let mut decrypted = actor.decrypt(aead_id, TEST_AAD.to_vec()).await.unwrap();
     assert_eq!(*decrypted.read(), plaintext);
 }
 
@@ -32,7 +34,7 @@ async fn decrypt_nonexistent_returns_not_found() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
-    let err = actor.decrypt(9999).await.unwrap_err();
+    let err = actor.decrypt(9999, TEST_AAD.to_vec()).await.unwrap_err();
     assert!(matches!(err, Error::NotFound));
 }
 
@@ -44,11 +46,11 @@ async fn ciphertext_differs_across_entries() {
 
     let plaintext = b"same content";
     let id1 = actor
-        .create_new(SafeCell::new(plaintext.to_vec()))
+        .create_new(SafeCell::new(plaintext.to_vec()), TEST_AAD.to_vec())
         .await
         .unwrap();
     let id2 = actor
-        .create_new(SafeCell::new(plaintext.to_vec()))
+        .create_new(SafeCell::new(plaintext.to_vec()), TEST_AAD.to_vec())
         .await
         .unwrap();
 
@@ -68,8 +70,8 @@ async fn ciphertext_differs_across_entries() {
 
     assert_ne!(row1.ciphertext, row2.ciphertext);
 
-    let mut d1 = actor.decrypt(id1).await.unwrap();
-    let mut d2 = actor.decrypt(id2).await.unwrap();
+    let mut d1 = actor.decrypt(id1, TEST_AAD.to_vec()).await.unwrap();
+    let mut d2 = actor.decrypt(id2, TEST_AAD.to_vec()).await.unwrap();
     assert_eq!(*d1.read(), plaintext);
     assert_eq!(*d2.read(), plaintext);
 }
@@ -83,7 +85,7 @@ async fn nonce_never_reused() {
     let n = 5;
     for i in 0..n {
         actor
-            .create_new(SafeCell::new(format!("secret {i}").into_bytes()))
+            .create_new(SafeCell::new(format!("secret {i}").into_bytes()), TEST_AAD.to_vec())
             .await
             .unwrap();
     }
@@ -137,7 +139,7 @@ async fn broken_db_nonce_format_fails_closed() {
     drop(conn);
 
     let err = actor
-        .create_new(SafeCell::new(b"must fail".to_vec()))
+        .create_new(SafeCell::new(b"must fail".to_vec()), TEST_AAD.to_vec())
         .await
         .unwrap_err();
     assert!(matches!(err, Error::BrokenDatabase));
@@ -145,7 +147,7 @@ async fn broken_db_nonce_format_fails_closed() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
     let id = actor
-        .create_new(SafeCell::new(b"decrypt target".to_vec()))
+        .create_new(SafeCell::new(b"decrypt target".to_vec()), TEST_AAD.to_vec())
         .await
         .unwrap();
     let mut conn = db.get().await.unwrap();
@@ -156,6 +158,6 @@ async fn broken_db_nonce_format_fails_closed() {
         .unwrap();
     drop(conn);
 
-    let err = actor.decrypt(id).await.unwrap_err();
+    let err = actor.decrypt(id, TEST_AAD.to_vec()).await.unwrap_err();
     assert!(matches!(err, Error::BrokenDatabase));
 }