test(server): governance integration tests

Adds DeclareCommittee and ContributePassphrase variants to bootstrap.proto,
ContributePassphrase to unseal.proto, and AwaitingContributions result codes
to both. Implements corresponding inbound converters and outbound reply
mappings. VaultGate handlers delegate to VaultCoordinator.

AGENTS.md

@@ -1,16 +1,13 @@
 # AGENTS.md
 
-Guidance for coding agents (Claude Code, Codex, …) working in this repository.
+This file provides guidance to Codex (Codex.ai/code) when working with code in this repository.
 
 ## Project Overview
 
-Arbiter is a **permissioned signing service** for cryptocurrency wallets:
+Arbiter is a **permissioned signing service** for cryptocurrency wallets. It consists of:
-
 - **`server/`** — Rust gRPC daemon that holds encrypted keys and enforces policies
-- **`useragent/`** — Flutter app (desktop + mobile + web targets) with a Rust core via `flutter_rust_bridge`
+- **`operator/`** — Flutter desktop app (macOS/Windows) with a Rust backend via Rinf
-- **`protobufs/`** — Protocol Buffer definitions shared between server and clients
+- **`protobufs/`** — Protocol Buffer definitions shared between server and client
-- **`docs/`** — `ARCHITECTURE.md` (peer types, flows, threat model) and `IMPLEMENTATION.md`; treat them as the design source of truth and update them when behaviour changes
-- **`scripts/`** — helper scripts, e.g. `gen_erc20_registry.py`
 
 The vault never exposes key material; it only produces signatures when requests satisfy configured policies.
 
@@ -21,7 +18,7 @@ Tools are managed via [mise](https://mise.jdx.dev/). Install all required tools:
 mise install
 ```
 
-Key versions live in `mise.toml` (currently Rust 1.95.0 with clippy, Flutter 3.41.7-stable, protoc 29.6, diesel_cli 2.3.7 with `sqlite-bundled`, Python 3.14). Also provided there: `cargo-nextest`, `cargo-audit`, `cargo-vet`, `cargo-shear`, `cargo-mutants`, `cargo-features-manager`, `cargo-edit`, `ast-grep`, `flutter_rust_bridge_codegen`.
+Key versions: Rust 1.93.0 (with clippy), Flutter 3.38.9-stable, protoc 29.6, diesel_cli 2.3.6 (sqlite).
 
 ## Server (Rust workspace at `server/`)
 
@@ -29,14 +26,10 @@ Key versions live in `mise.toml` (currently Rust 1.95.0 with clippy, Flutter 3.4
 
 | Crate | Purpose |
 |---|---|
-| `arbiter-proto` | Generated gRPC stubs + protobuf types (`tonic-prost-build`); also `ArbiterUrl`, `home_path()`, `BOOTSTRAP_PATH` |
+| `arbiter-proto` | Generated gRPC stubs + protobuf types; compiled from `protobufs/*.proto` via `tonic-prost-build` |
-| `arbiter-crypto` | Shared crypto primitives: `authn` (ML-DSA), `safecell` (hardened memory), `hashing::Hashable`, re-exported `x-wing` |
+| `arbiter-server` | Main daemon — actors, DB, EVM policy engine, gRPC service implementation |
-| `arbiter-macros` | `#[derive(Hashable)]` — canonical hashing of structs for the DB integrity layer |
+| `arbiter-operator` | Rust client library for the operator side of the gRPC protocol |
-| `arbiter-server` | Main daemon — actors, peers, DB, EVM policy engine, gRPC service implementation |
+| `arbiter-client` | Rust client library for SDK clients |
-| `arbiter-client` | Rust client library for SDK clients (`ArbiterClient`, EVM wallet, key storage) |
-| `arbiter-tokens-registry` | Generated ERC-20 token registry used by token-transfer policies |
-
-Workspace lints (`server/Cargo.toml`) are strict: most of clippy `pedantic`/`nursery` plus a large restriction set. `as` casts, indexing/slicing, `dbg!`, float arithmetic and undocumented `unsafe` are denied or warned — expect to add an `#[expect(..., reason = "...")]` rather than to silence a lint globally.
 
 ### Common Commands
 
@@ -49,78 +42,54 @@ cargo build
 # Run the server daemon
 cargo run -p arbiter-server
 
-# Run all tests (preferred over cargo test; CI uses --all-features)
+# Run all tests (preferred over cargo test)
 cargo nextest run
 
 # Run a single test
 cargo nextest run <test_name>
 
-# Lint (CI runs it with -D warnings)
+# Lint
-cargo clippy --all -- -D warnings
+cargo clippy
 
 # Security audit
 cargo audit
 
-# Supply-chain review (config in server/supply-chain/)
-cargo vet
-
 # Check unused dependencies
 cargo shear
 
-# Mutation testing
+# Run snapshot tests and update snapshots
-cargo mutants
+cargo insta review
 ```
 
-### CI
-
-Woodpecker pipelines in `.woodpecker/` run on `server/**` changes: `server-lint` (clippy), `server-test` (nextest, `--all-features`), `server-audit`, `server-vet`, plus `useragent-analyze` for the Flutter app.
-
 ### Architecture
 
-The server is actor-based using the **kameo** crate. Long-lived state lives in `GlobalActors` (`src/actors/mod.rs`):
+The server is actor-based using the **kameo** crate. All long-lived state lives in `GlobalActors`:
 
-- **`Bootstrapper`** — one-time bootstrap token, written to `~/.arbiter/bootstrap_token` on first run
+- **`Bootstrapper`** — Manages the one-time bootstrap token written to `~/.arbiter/bootstrap_token` on first run.
-- **`Vault`** — encrypted root key and the Sealed/Unsealed state machine; on unseal decrypts the root key into a `memsafe`-backed `SafeCell`
+- **`Vault`** — Holds the encrypted root key and manages the Sealed/Unsealed vault state machine. On unseal, decrypts the root key into a `memsafe` hardened memory cell.
-- **`FlowCoordinator`** — cross-connection flow between operators and SDK clients
+- **`FlowCoordinator`** — Coordinates cross-connection flow between operators and SDK clients.
-- **`OperatorRegistry`** — tracks currently connected operators
+- **`EvmActor`** — Handles EVM transaction policy enforcement and signing.
-- **`EvmActor`** — EVM transaction policy enforcement and signing
-- **`events`** — a `kameo_actors::MessageBus` (`DeliveryStrategy::Guaranteed`) for cross-actor notifications
 
-Per-connection state lives under **`src/peers/`**, not `actors/`: `peers/client/` and `peers/operator/`, each with `auth` (challenge-response) and `session` (post-auth) sub-modules; the operator side additionally has `vault_gate/` for the unseal handshake.
+Per-connection actors live under `actors/operator/` and `actors/client/`, each with `auth` (challenge-response authentication) and `session` (post-auth operations) sub-modules.
 
-The gRPC surface lives in **`src/grpc/`**, split per peer (`client/`, `operator/`, `common/`) and per direction (`inbound.rs` — requests to the daemon, `outbound.rs` — server-initiated streams), with `request_tracker.rs` correlating the two.
+**Database:** SQLite via `diesel-async` + `bb8` connection pool. Schema managed by embedded Diesel migrations in `crates/arbiter-server/migrations/`. DB file lives at `~/.arbiter/arbiter.sqlite`. Tests use a temp-file DB via `db::create_test_pool()`.
-
-EVM logic is in `src/evm/`: `policies/ether_transfer/`, `policies/token_transfers/`, `abi.rs`, `safe_signer.rs`.
-
-**Database:** SQLite via `diesel-async` + `bb8`. Schema in `src/db/schema.rs`, models in `src/db/models.rs`, embedded migrations in `crates/arbiter-server/migrations/`. DB file lives at `~/.arbiter/arbiter.sqlite`; tests use a temp-file DB via `db::create_test_pool()`.
-
-Entity ids are newtypes generated by the `declare_id!` macro in `db::models` (`OperatorId`, `ChainId`, …), each a `#[repr(transparent)]` wrapper over `i32` with `to_raw`/`from_raw`. Pass these around instead of bare `i32`.
-
-**Row integrity:** sensitive rows are covered by an HMAC-SHA256 envelope (`src/crypto/integrity/`, table `integrity_envelope`), keyed from the vault root key. A struct becomes coverable by deriving `arbiter_macros::Hashable` and implementing `Integrable` (`KIND` + `VERSION`). When adding or changing a covered entity, keep the derive and the payload version in sync — a mismatch surfaces as `PayloadVersionMismatch` or `MacMismatch` at runtime.
 
 **Cryptography:**
-- Authentication: **ML-DSA-87** (post-quantum, `arbiter-crypto::authn::v1`), challenge-response with per-peer nonce tracking
+- Authentication: ed25519 (challenge-response, nonce-tracked per peer)
-- Encryption at rest: XChaCha20-Poly1305, versioned modules (`crypto/encryption/v1.rs`) with a `schema_version` column for transparent migration on unseal
+- Encryption at rest: XChaCha20-Poly1305 (versioned via `scheme` field for transparent migration on unseal)
 - Password KDF: Argon2
-- Unseal transport: X25519 ephemeral key exchange (`peers/operator/vault_gate/`); `x-wing` (hybrid PQ KEM) is available via `arbiter-crypto`
+- Unseal transport: X25519 ephemeral key exchange
-- TLS: self-signed certificate (rustls + aws-lc-rs, `prefer-post-quantum`), fingerprint distributed via `ArbiterUrl`
+- TLS: self-signed certificate (aws-lc-rs backend), fingerprint distributed via `ArbiterUrl`
 
-Crypto modules are versioned by convention: `mod.rs` re-exports the current `vN`. Add a `v(N+1)` rather than editing an existing version in place.
+**Protocol:** gRPC with Protocol Buffers. The `ArbiterUrl` type encodes host, port, CA cert, and bootstrap token into a single shareable string (printed to console on first run).
-
-**Protocol:** gRPC with Protocol Buffers. `ArbiterUrl` encodes host, port, CA cert and bootstrap token into a single shareable string (printed to console on first run).
 
 ### Proto Regeneration
 
-`arbiter-proto/build.rs` compiles `arbiter.proto`, `operator.proto`, `client.proto` and `evm.proto` (with their `shared/`, `operator/`, `client/` includes) on build:
+When `.proto` files in `protobufs/` change, rebuild to regenerate:
 ```sh
 cd server && cargo build -p arbiter-proto
 ```
 
-Dart protobuf stubs are generated separately, from the repo root:
-```sh
-mise run codegen   # protoc --dart_out=grpc:useragent/lib/proto
-```
-
 ### Database Migrations
 
 ```sh
@@ -131,8 +100,6 @@ diesel migration generate <name> --migration-dir crates/arbiter-server/migration
 diesel migration run --migration-dir crates/arbiter-server/migrations
 ```
 
-Pre-release policy: there is a single `init` migration and no deployed databases yet, so schema changes are made by editing that migration directly instead of stacking new ones. Regenerate `src/db/schema.rs` after changing it.
-
 ### Code Conventions
 
 **`#[must_use]` Attribute:**
@@ -154,23 +121,29 @@ pub fn verify(&self, nonce: i32, context: &[u8], signature: &Signature) -> bool
 
 This forces callers to either use the return value or explicitly ignore it with `let _ = ...;`, preventing silent failures.
 
-## User Agent (Flutter + flutter_rust_bridge at `useragent/`)
+## Operator (Flutter + Rinf at `operator/`)
 
-The Flutter app calls Rust through [flutter_rust_bridge](https://cjycode.com/flutter_rust_bridge/) 2.12.0. The Rust side is the `rust_lib_arbiter` crate at `useragent/rust/`; everything exposed to Dart is declared in `useragent/rust/src/api/` and lands in `useragent/lib/src/rust/` (see `useragent/flutter_rust_bridge.yaml`). Dart UI code is organised as `lib/features/`, `lib/screens/`, `lib/widgets/`, `lib/providers/`, `lib/theme/`, with routing in `lib/router.dart` (`router.gr.dart` is generated).
+The Flutter app uses [Rinf](https://rinf.cunarist.org) to call Rust code. The Rust logic lives in `operator/native/hub/` as a separate crate that uses `arbiter-operator` for the gRPC client.
+
+Communication between Dart and Rust uses typed **signals** defined in `operator/native/hub/src/signals/`. After modifying signal structs, regenerate Dart bindings:
+
+```sh
+cd operator && rinf gen
+```
 
 ### Common Commands
 
 ```sh
-cd useragent
+cd operator
 
-# Run the app
+# Run the app (macOS or Windows)
 flutter run
 
-# Regenerate Rust↔Dart bindings after editing rust/src/api/
+# Regenerate Rust↔Dart signal bindings
-mise run codegen        # flutter_rust_bridge_codegen generate
+rinf gen
 
-# Analyze Dart code (also run in CI)
+# Analyze Dart code
 flutter analyze
 ```
 
-Note: `app/` contains only stale generated Flutter artifacts and is not the application source.
+The Rinf Rust entry point is `operator/native/hub/src/lib.rs`. It spawns actors defined in `operator/native/hub/src/actors/` which handle Dart↔server communication via signals.

app/.dart_tool/extension_discovery/README.md

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

app/.dart_tool/extension_discovery/vs_code.json

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

app/.dart_tool/package_config.json

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

app/.dart_tool/package_graph.json

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

app/.dart_tool/version

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

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

@@ -0,0 +1,821 @@
+# 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

@@ -0,0 +1,170 @@
+# 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 |

protobufs/operator/governance.proto

@@ -12,37 +12,15 @@ message Request {
 
 message CreateProposalRequest {
   oneof kind {
-    ApproveSdkClientPayload         approve_sdk_client          = 1;
+    ApproveSdkClientPayload approve_sdk_client = 1;
-    GrantWalletAccessPayload        grant_wallet_access         = 3;
-    ApproveServerUpdatePayload      approve_server_update       = 4;
-    ReplaceOperatorPayload          replace_operator            = 5;
-    UpdateShamirParametersPayload   update_shamir_parameters    = 6;
-    ApprovePersistentGrantPayload   approve_persistent_grant    = 7;
-    ApproveOneOffTransactionPayload approve_one_off_transaction = 8;
   }
   optional uint32 ttl_secs = 2;
 }
 
-message ReplaceOperatorPayload {
-  int32 old_operator_id = 1;
-  bytes new_pubkey      = 2;
-}
-
-message UpdateShamirParametersPayload {
-  uint32 new_n = 1;
-}
-
-message ApproveServerUpdatePayload {}
-
 message ApproveSdkClientPayload {
   int32 client_id = 1;
 }
 
-message GrantWalletAccessPayload {
-  int32 wallet_id = 1;
-  int32 client_id = 2;
-}
-
 message CastVoteRequest {
   int32 proposal_id = 1;
   bool  approve     = 2;
@@ -53,9 +31,9 @@ message QueryPendingRequest {}
 
 message Response {
   oneof payload {
-    CreateProposalResponse created = 1;
+    CreateProposalResponse created  = 1;
-    VoteResponse           voted   = 2;
+    VoteResponse           voted    = 2;
-    QueryPendingResponse   pending = 3;
+    QueryPendingResponse   pending  = 3;
   }
 }
 
@@ -68,10 +46,10 @@ message VoteResponse {
 }
 
 enum VoteOutcome {
-  VOTE_OUTCOME_UNSPECIFIED = 0;
+  VOTE_OUTCOME_UNSPECIFIED  = 0;
-  VOTE_OUTCOME_PENDING     = 1;
+  VOTE_OUTCOME_PENDING      = 1;
-  VOTE_OUTCOME_APPROVED    = 2;
+  VOTE_OUTCOME_APPROVED     = 2;
-  VOTE_OUTCOME_REJECTED    = 3;
+  VOTE_OUTCOME_REJECTED     = 3;
 }
 
 message ProposalSummary {
@@ -86,51 +64,3 @@ message ProposalSummary {
 message QueryPendingResponse {
   repeated ProposalSummary proposals = 1;
 }
-
-message TransactionRateLimitProto {
-  uint32 count       = 1;
-  int64  window_secs = 2;
-}
-
-message VolumeLimitProto {
-  bytes max_volume  = 1;
-  int64 window_secs = 2;
-}
-
-message EtherTransferSpecProto {
-  repeated bytes   targets = 1;
-  VolumeLimitProto limit   = 2;
-}
-
-message TokenTransferSpecProto {
-  bytes                     token_contract = 1;
-  optional bytes            target         = 2;
-  repeated VolumeLimitProto volume_limits  = 3;
-}
-
-message ApproveOneOffTransactionPayload {
-  int32  client_id                = 1;
-  bytes  wallet_address           = 2;
-  uint64 chain_id                 = 3;
-  uint64 nonce                    = 4;
-  uint64 gas_limit                = 5;
-  bytes  max_fee_per_gas          = 6;
-  bytes  max_priority_fee_per_gas = 7;
-  bytes  to                       = 8;
-  bytes  value                    = 9;
-  bytes  input                    = 10;
-}
-
-message ApprovePersistentGrantPayload {
-  int32                              wallet_access_id         = 1;
-  uint64                             chain_id                 = 2;
-  optional int64                     valid_from_secs          = 3;
-  optional int64                     valid_until_secs         = 4;
-  optional bytes                     max_gas_fee_per_gas      = 5;
-  optional bytes                     max_priority_fee_per_gas = 6;
-  optional TransactionRateLimitProto rate_limit               = 7;
-  oneof specific {
-    EtherTransferSpecProto ether_transfer = 8;
-    TokenTransferSpecProto token_transfer = 9;
-  }
-}

protobufs/operator/vault/bootstrap.proto

@@ -9,19 +9,13 @@ message BootstrapEncryptedKey {
 }
 
 message DeclareCommittee {
-  uint32 count          = 1;
+  uint32 count = 1;
-  uint32 recovery_count = 2;
 }
 
 message ContributePassphrase {
   bytes passphrase = 1;
 }
 
-message ContributeRecoveryPassphrase {
-  int32 recovery_operator_id = 1;
-  bytes passphrase            = 2;
-}
-
 enum BootstrapResult {
   BOOTSTRAP_RESULT_UNSPECIFIED = 0;
   BOOTSTRAP_RESULT_SUCCESS = 1;
@@ -32,10 +26,9 @@ enum BootstrapResult {
 
 message Request {
   oneof payload {
-    BootstrapEncryptedKey        encrypted_key                    = 2;
+    BootstrapEncryptedKey encrypted_key = 2;
-    DeclareCommittee             declare_committee                = 3;
+    DeclareCommittee declare_committee = 3;
-    ContributePassphrase         contribute_passphrase            = 4;
+    ContributePassphrase contribute_passphrase = 4;
-    ContributeRecoveryPassphrase contribute_recovery_passphrase   = 5;
   }
 }
 

protobufs/operator/vault/rekey.proto

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

protobufs/operator/vault/unseal.proto

@@ -19,11 +19,6 @@ message ContributePassphrase {
   bytes passphrase = 1;
 }
 
-message ContributeRecoveryPassphrase {
-  int32 recovery_operator_id = 1;
-  bytes passphrase            = 2;
-}
-
 enum UnsealResult {
   UNSEAL_RESULT_UNSPECIFIED = 0;
   UNSEAL_RESULT_SUCCESS = 1;
@@ -34,10 +29,9 @@ enum UnsealResult {
 
 message Request {
   oneof payload {
-    UnsealStart                  start                          = 1;
+    UnsealStart start = 1;
-    UnsealEncryptedKey           encrypted_key                  = 2;
+    UnsealEncryptedKey encrypted_key = 2;
-    ContributePassphrase         contribute_passphrase          = 3;
+    ContributePassphrase contribute_passphrase = 3;
-    ContributeRecoveryPassphrase contribute_recovery_passphrase = 4;
   }
 }
 

protobufs/operator/vault/vault.proto

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

server/Cargo.lock

@@ -24,7 +24,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d122413f284cf2d62fb1b7db97e02edb8cda96d769b16e443a4f6195e35662b0"
 dependencies = [
  "crypto-common 0.1.7",
- "generic-array",
+ "generic-array 0.14.7",
 ]
 
 [[package]]
@@ -771,7 +771,7 @@ dependencies = [
  "proptest",
  "prost-types",
  "rand 0.10.1",
- "rand_core 0.10.1",
+ "rand_core 0.6.4",
  "rcgen",
  "restructed",
  "rstest",
@@ -787,6 +787,7 @@ dependencies = [
  "tonic",
  "tracing",
  "tracing-subscriber",
+ "vsss-rs",
  "x25519-dalek 2.0.1",
 ]
 
@@ -1284,7 +1285,7 @@ version = "0.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
 dependencies = [
- "generic-array",
+ "generic-array 0.14.7",
 ]
 
 [[package]]
@@ -1613,8 +1614,22 @@ version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0dc92fb57ca44df6db8059111ab3af99a63d5d0f8375d9972e319a379c6bab76"
 dependencies = [
- "generic-array",
+ "generic-array 0.14.7",
  "rand_core 0.6.4",
+ "serdect 0.2.0",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "crypto-bigint"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96272c2ff28b807e09250b180ad1fb7889a3258f7455759b5c3c58b719467130"
+dependencies = [
+ "num-traits",
+ "rand_core 0.6.4",
+ "serdect 0.3.0",
  "subtle",
  "zeroize",
 ]
@@ -1625,7 +1640,7 @@ version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78c8292055d1c1df0cce5d180393dc8cce0abec0a7102adb6c7b1eef6016d60a"
 dependencies = [
- "generic-array",
+ "generic-array 0.14.7",
  "rand_core 0.6.4",
  "typenum",
 ]
@@ -1928,7 +1943,7 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3dd60d1080a57a05ab032377049e0591415d2b31afd7028356dbf3cc6dcb066"
 dependencies = [
- "generic-array",
+ "generic-array 0.14.7",
 ]
 
 [[package]]
@@ -2008,7 +2023,7 @@ dependencies = [
  "digest 0.10.7",
  "elliptic-curve",
  "rfc6979",
- "serdect",
+ "serdect 0.2.0",
  "signature 2.2.0",
  "spki 0.7.3",
 ]
@@ -2041,16 +2056,32 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b5e6043086bf7973472e0c7dff2142ea0b680d30e18d9cc40f267efbf222bd47"
 dependencies = [
  "base16ct",
- "crypto-bigint",
+ "crypto-bigint 0.5.5",
  "digest 0.10.7",
  "ff",
- "generic-array",
+ "generic-array 0.14.7",
  "group",
+ "hkdf",
  "pkcs8 0.10.2",
  "rand_core 0.6.4",
  "sec1",
- "serdect",
+ "serdect 0.2.0",
  "subtle",
+ "tap",
+ "zeroize",
+]
+
+[[package]]
+name = "elliptic-curve-tools"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1de2b6fae800f08032a6ea32995b52925b1d451bff9d445c8ab2932323277faf"
+dependencies = [
+ "elliptic-curve",
+ "heapless",
+ "hex",
+ "multiexp",
+ "serde",
  "zeroize",
 ]
 
@@ -2124,6 +2155,7 @@ version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c0b50bfb653653f9ca9095b427bed08ab8d75a137839d9ad64eb11810d5b6393"
 dependencies = [
+ "bitvec",
  "rand_core 0.6.4",
  "subtle",
 ]
@@ -2324,6 +2356,17 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "generic-array"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dab9e9188e97a93276e1fe7b56401b851e2b45a46d045ca658100c1303ada649"
+dependencies = [
+ "rustversion",
+ "serde_core",
+ "typenum",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.2.17"
@@ -2407,6 +2450,15 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "hash32"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47d60b12902ba28e2730cd37e95b8c9223af2808df9e902d4df49588d1470606"
+dependencies = [
+ "byteorder",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.12.3"
@@ -2447,6 +2499,16 @@ version = "0.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4f467dd6dccf739c208452f8014c75c18bb8301b050ad1cfb27153803edb0f51"
 
+[[package]]
+name = "heapless"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0bfb9eb618601c89945a70e254898da93b13be0388091d42117462b265bb3fad"
+dependencies = [
+ "hash32",
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "heck"
 version = "0.5.0"
@@ -2474,6 +2536,15 @@ dependencies = [
  "arrayvec",
 ]
 
+[[package]]
+name = "hkdf"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b5f8eb2ad728638ea2c7d47a21db23b7b58a72ed6a38256b8a1849f15fbbdf7"
+dependencies = [
+ "hmac 0.12.1",
+]
+
 [[package]]
 name = "hmac"
 version = "0.12.1"
@@ -2544,6 +2615,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d46837a0ed51fe95bd3b05de33cd64a1ee88fc797477ca48446872504507c5"
 dependencies = [
  "ctutils",
+ "serde",
  "typenum",
  "zeroize",
 ]
@@ -2809,7 +2881,7 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "879f10e63c20629ecabbb64a8010319738c66a5cd0c29b02d63d272b03751d01"
 dependencies = [
- "generic-array",
+ "generic-array 0.14.7",
 ]
 
 [[package]]
@@ -2948,7 +3020,7 @@ dependencies = [
  "ecdsa",
  "elliptic-curve",
  "once_cell",
- "serdect",
+ "serdect 0.2.0",
  "sha2 0.10.9",
  "signature 2.2.0",
 ]
@@ -2956,7 +3028,7 @@ dependencies = [
 [[package]]
 name = "kameo"
 version = "0.20.0"
-source = "git+https://github.com/hdbg/kameo.git?rev=805b417#805b41783fe90b54827ecad142b422c7a9b69b9a"
+source = "git+https://github.com/hdbg/kameo.git?rev=3e18ba2#3e18ba24023d0422034e60ff2ea1ecd49e8c3c93"
 dependencies = [
  "downcast-rs",
  "dyn-clone",
@@ -2970,7 +3042,7 @@ dependencies = [
 [[package]]
 name = "kameo_actors"
 version = "0.5.0"
-source = "git+https://github.com/hdbg/kameo.git?rev=805b417#805b41783fe90b54827ecad142b422c7a9b69b9a"
+source = "git+https://github.com/hdbg/kameo.git?rev=3e18ba2#3e18ba24023d0422034e60ff2ea1ecd49e8c3c93"
 dependencies = [
  "futures",
  "glob",
@@ -2982,9 +3054,8 @@ dependencies = [
 [[package]]
 name = "kameo_macros"
 version = "0.20.0"
-source = "git+https://github.com/hdbg/kameo.git?rev=805b417#805b41783fe90b54827ecad142b422c7a9b69b9a"
+source = "git+https://github.com/hdbg/kameo.git?rev=3e18ba2#3e18ba24023d0422034e60ff2ea1ecd49e8c3c93"
 dependencies = [
- "darling 0.23.0",
  "heck",
  "proc-macro2",
  "quote",
@@ -3291,6 +3362,20 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "multiexp"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ec2ce93a6f06ac6cae04c1da3f2a6a24fcfc1f0eb0b4e0f3d302f0df45326cb"
+dependencies = [
+ "ff",
+ "group",
+ "rand_core 0.6.4",
+ "rustversion",
+ "std-shims",
+ "zeroize",
+]
+
 [[package]]
 name = "multimap"
 version = "0.10.1"
@@ -3322,6 +3407,20 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "num"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35bd024e8b2ff75562e5f34e7f4905839deb4b22955ef5e73d2fea1b9813cb23"
+dependencies = [
+ "num-bigint",
+ "num-complex",
+ "num-integer",
+ "num-iter",
+ "num-rational",
+ "num-traits",
+]
+
 [[package]]
 name = "num-bigint"
 version = "0.4.6"
@@ -3330,6 +3429,19 @@ checksum = "a5e44f723f1133c9deac646763579fdb3ac745e418f2a7af9cd0c431da1f20b9"
 dependencies = [
  "num-integer",
  "num-traits",
+ "rand 0.8.6",
+ "serde",
+]
+
+[[package]]
+name = "num-complex"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73f88a1307638156682bada9d7604135552957b7818057dcef22705b4d509495"
+dependencies = [
+ "num-traits",
+ "rand 0.8.6",
+ "serde",
 ]
 
 [[package]]
@@ -3347,6 +3459,29 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-iter"
+version = "0.1.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1429034a0490724d0075ebb2bc9e875d6503c3cf69e235a8941aa757d83ef5bf"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-rational"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f83d14da390562dca69fc84082e73e548e1ad308d24accdedd2720017cb37824"
+dependencies = [
+ "num-bigint",
+ "num-integer",
+ "num-traits",
+ "serde",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -4455,9 +4590,9 @@ checksum = "d3e97a565f76233a6003f9f5c54be1d9c5bdfa3eccfb189469f11ec4901c47dc"
 dependencies = [
  "base16ct",
  "der 0.7.10",
- "generic-array",
+ "generic-array 0.14.7",
  "pkcs8 0.10.2",
- "serdect",
+ "serdect 0.2.0",
  "subtle",
  "zeroize",
 ]
@@ -4623,6 +4758,16 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serdect"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f42f67da2385b51a5f9652db9c93d78aeaf7610bf5ec366080b6de810604af53"
+dependencies = [
+ "base16ct",
+ "serde",
+]
+
 [[package]]
 name = "sha2"
 version = "0.10.9"
@@ -4788,6 +4933,12 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "spin"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d5fe4ccb98d9c292d56fec89a5e07da7fc4cf0dc11e156b41793132775d3e591"
+
 [[package]]
 name = "spki"
 version = "0.7.3"
@@ -4832,6 +4983,17 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
 
+[[package]]
+name = "std-shims"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "227c4f8561598188d0df96dbe749824576174bba278b5b6bb2eacff1066067d0"
+dependencies = [
+ "hashbrown 0.16.1",
+ "rustversion",
+ "spin",
+]
+
 [[package]]
 name = "string_morph"
 version = "0.1.0"
@@ -5575,6 +5737,27 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
+[[package]]
+name = "vsss-rs"
+version = "5.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ec751bdcc8bda099e269b24cc6b4ad14f9ce8b0490c1599174070e792ecd70c"
+dependencies = [
+ "crypto-bigint 0.5.5",
+ "crypto-bigint 0.6.1",
+ "elliptic-curve",
+ "elliptic-curve-tools",
+ "generic-array 1.4.1",
+ "hex",
+ "hybrid-array",
+ "num",
+ "rand_core 0.6.4",
+ "serde",
+ "sha3 0.10.9",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "wait-timeout"
 version = "0.2.1"
@@ -6262,18 +6445,18 @@ dependencies = [
 
 [[package]]
 name = "zeroize"
-version = "1.9.0"
+version = "1.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e13c156562582aa81c60cb29407084cdb54c4164760106ab78e6c5b0858cf64e"
+checksum = "b97154e67e32c85465826e8bcc1c59429aaaf107c1e4a9e53c8d8ccd5eff88d0"
 dependencies = [
  "zeroize_derive",
 ]
 
 [[package]]
 name = "zeroize_derive"
-version = "1.5.0"
+version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c50655cbb0fe3fc43170059e702f1ce5e19b84cec58dc87b037a09935c2f328"
+checksum = "85a5b4158499876c763cb03bc4e49185d3cccbabb15b33c627f7884f43db852e"
 dependencies = [
  "proc-macro2",
  "quote",

server/Cargo.toml

@@ -12,8 +12,8 @@ base64 = "0.22.1"
 chrono = { version = "0.4.44", features = ["serde"] }
 futures = "0.3.32"
 k256 = { version = "0.13.4", features = ["ecdsa", "pkcs8"] }
-kameo = {git = "https://github.com/hdbg/kameo.git", rev = "805b417"}
+kameo = {git = "https://github.com/hdbg/kameo.git", rev = "3e18ba2"}
-kameo_actors = {git = "https://github.com/hdbg/kameo.git", rev = "805b417"}
+kameo_actors = {git = "https://github.com/hdbg/kameo.git", rev = "3e18ba2"}
 hmac = "0.13.0"
 miette = { version = "7.6.0", features = ["fancy", "serde"] }
 ml-dsa = { version = "0.1.0-rc.9", features = ["zeroize"] }
@@ -21,7 +21,6 @@ mutants = "0.0.4"
 prost = "0.14.3"
 prost-types = { version = "0.14.3", features = ["chrono"] }
 rand = "0.10.1"
-rand_core = "0.10.1"
 rcgen = { version = "0.14.7", 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 }
@@ -77,7 +76,6 @@ needless_pass_by_ref_mut = "allow"
 pub_underscore_fields = "allow"
 redundant_pub_crate = "allow" 
 uninhabited_references = "allow" # safe with unsafe_code = "forbid" and standard uninhabited pattern (match *self {})
-too-many-lines = "allow" # this is a very common pattern in server code, and it's not always possible to break it down into smaller modules without hurting readability
 
 # restriction lints
 alloc_instead_of_core = "warn"
@@ -108,7 +106,6 @@ indexing_slicing = "warn"
 infinite_loop = "warn"
 inline_asm_x86_att_syntax = "warn"
 inline_asm_x86_intel_syntax = "warn"
-integer_division = "warn"
 large_include_file = "warn"
 lossy_float_literal = "warn"
 map_with_unused_argument_over_ranges = "warn"

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

@@ -100,7 +100,7 @@ async fn send_auth_challenge_solution(
     key: &SigningKey,
     challenge: AuthChallenge,
 ) -> Result<(), AuthError> {
-    let timestamp = DateTime::from_timestamp_nanos(challenge.timestamp_nanos.cast_signed());
+    let timestamp = DateTime::from_timestamp_nanos(challenge.timestamp_nanos as i64);
     let challenge = authn::AuthChallenge {
         nonce: *challenge
             .random

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

@@ -8,6 +8,7 @@ use rand::RngExt;
 
 pub static CLIENT_CONTEXT: &[u8] = b"arbiter_client";
 pub static OPERATOR_CONTEXT: &[u8] = b"arbiter_operator";
+pub static GOVERNANCE_CONTEXT: &[u8] = b"arbiter_governance_vote";
 
 const NONCE_SIZE: usize = 32;
 
@@ -90,6 +91,11 @@ impl PublicKey {
         self.0
             .verify_with_context(&challenge, context, &signature.0)
     }
+
+    #[must_use]
+    pub fn verify_message(&self, message: &[u8], context: &[u8], signature: &Signature) -> bool {
+        self.0.verify_with_context(message, context, &signature.0)
+    }
 }
 
 impl Signature {

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

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

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

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

server/crates/arbiter-server/Cargo.toml

@@ -31,7 +31,6 @@ 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
@@ -51,6 +50,8 @@ subtle = "2.6.1"
 x25519-dalek.workspace = true
 k256.workspace = true
 kameo_actors.workspace = true
+vsss-rs = "5.4.0"
+rand_core = "0.6"
 
 [dev-dependencies]
 proptest = "1.11.0"

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

@@ -56,6 +56,7 @@ create table if not exists operator (
 
     share blob not null,
     share_nonce blob not null,
+    share_salt blob not null default (randomblob(32)),
 
     created_at integer not null default(unixepoch ('now')),
     updated_at integer not null default(unixepoch ('now'))
@@ -215,3 +216,24 @@ create table if not exists integrity_envelope (
 ) STRICT;
 
 create unique index if not exists uniq_integrity_envelope_entity on integrity_envelope (entity_kind, entity_id);
+
+create table if not exists proposal (
+    id           integer not null primary key,
+    kind         text    not null,
+    payload      blob    not null,
+    initiator_id integer not null references operator_identity(id) on delete restrict,
+    created_at   integer not null default(unixepoch('now')),
+    expires_at   integer not null,
+    status       text    not null default 'pending'
+        check (status in ('pending', 'approved', 'rejected', 'expired'))
+) STRICT;
+
+create table if not exists proposal_vote (
+    id          integer not null primary key,
+    proposal_id integer not null references proposal(id) on delete cascade,
+    operator_id integer not null references operator_identity(id) on delete restrict,
+    approve     integer not null check (approve in (0, 1)),
+    signature   blob    not null,
+    voted_at    integer not null default(unixepoch('now')),
+    unique (proposal_id, operator_id)
+) STRICT;

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

@@ -1,48 +1,29 @@
 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, rngs::SysRng};
+use rand::{RngExt, distr::Alphanumeric, make_rng, rngs::StdRng};
-use rand_core::UnwrapErr;
-use std::path::{Path, PathBuf};
 use subtle::ConstantTimeEq as _;
 use thiserror::Error;
-use tracing::warn;
 
 const TOKEN_LENGTH: usize = 64;
 
-async fn write_token_file(path: &Path, content: &str) -> Result<(), std::io::Error> {
+pub async fn generate_token() -> Result<String, std::io::Error> {
-    tokio::fs::write(path, content.as_bytes()).await?;
+    let rng: StdRng = make_rng();
 
-    #[cfg(unix)]
+    let token = rng.sample_iter(Alphanumeric).take(TOKEN_LENGTH).fold(
-    {
+        String::default(),
-        use std::os::unix::fs::PermissionsExt as _;
+        |mut accum, char| {
-        tokio::fs::set_permissions(path, std::fs::Permissions::from_mode(0o600)).await?;
+            accum += char.to_string().as_str();
-    }
+            accum
+        },
+    );
 
-    Ok(())
+    tokio::fs::write(home_path()?.join(BOOTSTRAP_PATH), token.as_str()).await?;
-}
 
-async fn generate_token(path: &Path) -> Result<SafeCell<[u8; TOKEN_LENGTH]>, std::io::Error> {
+    Ok(token)
-    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)]
@@ -59,8 +40,7 @@ pub enum Error {
 
 #[derive(Actor)]
 pub struct Bootstrapper {
-    token: Option<SafeCell<[u8; TOKEN_LENGTH]>>,
+    token: Option<String>,
-    token_path: Option<PathBuf>,
 }
 
 impl Bootstrapper {
@@ -74,37 +54,34 @@ impl Bootstrapper {
                 .await?
         };
 
-        let (token, token_path) = if row_count == 0 {
+        let token = if row_count == 0 {
-            let path = home_path()?.join(BOOTSTRAP_PATH);
+            let token = generate_token().await?;
-            let token = generate_token(&path).await?;
+            Some(token)
-            (Some(token), Some(path))
         } else {
-            (None, None)
+            None
         };
 
-        Ok(Self { token, token_path })
+        Ok(Self { token })
-    }
-}
-
-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 async fn consume_token(&mut self, token: Vec<u8>) -> bool {
+    pub fn is_correct_token(&self, token: String) -> bool {
-        if self.is_correct_token(&token) {
+        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) {
             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
@@ -115,9 +92,7 @@ impl Bootstrapper {
 #[messages]
 impl Bootstrapper {
     #[message]
-    pub fn get_token(&mut self) -> Option<String> {
+    pub fn get_token(&self) -> Option<String> {
-        self.token
+        self.token.clone()
-            .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

@@ -1,6 +1,6 @@
 use crate::{
     actors::vault::{CreateNew, Decrypt, Vault},
-    crypto::integrity::{self, Integrable},
+    crypto::integrity,
     db::{
         DatabaseError, DatabasePool,
         models::{self, EvmWalletId},
@@ -25,35 +25,14 @@ 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),
 
@@ -85,12 +64,6 @@ 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>,
@@ -124,39 +97,20 @@ impl EvmActor {
 
         let aead_id: i32 = self
             .vault
-            .ask(CreateNew {
+            .ask(CreateNew { plaintext })
-                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 = conn
+        let wallet_id = insert_into(schema::evm_wallet::table)
-            .exclusive_transaction(async |conn| {
+            .values(&models::NewEvmWallet {
-                let wallet_id: i32 = insert_into(schema::evm_wallet::table)
+                address: address.as_slice().to_vec(),
-                    .values(&models::NewEvmWallet {
+                aead_encrypted_id: aead_id,
-                        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)
             })
-            .await?;
+            .returning(schema::evm_wallet::id)
+            .get_result(&mut conn)
+            .await
+            .map_err(DatabaseError::from)?;
 
         Ok((wallet_id, address))
     }
@@ -206,14 +160,23 @@ impl EvmActor {
     }
 
     #[message]
-    pub async fn useragent_delete_grant(
+    pub async fn operator_delete_grant(&mut self, grant_id: i32) -> Result<(), Error> {
-        &mut self,
+        let mut conn = self.db.get().await.map_err(DatabaseError::from)?;
-        grant_id: i32,
+
-    ) -> Result<(), Error> {
+        let affected = diesel::update(schema::evm_basic_grant::table)
-        self.engine
+            .filter(schema::evm_basic_grant::id.eq(grant_id))
-            .revoke_grant(grant_id)
+            .set(schema::evm_basic_grant::revoked_at.eq(models::SqliteTimestamp::now()))
+            .execute(&mut conn)
             .await
-            .map_err(Error::from)
+            .map_err(DatabaseError::from)?;
+
+        if affected == 0 {
+            return Err(Error::Database(DatabaseError::from(
+                diesel::result::Error::NotFound,
+            )));
+        }
+
+        Ok(())
     }
 
     #[message]
@@ -287,51 +250,16 @@ 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/client_connect_approval.rs

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

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

@@ -20,8 +20,6 @@ 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>,
 }
 
@@ -29,7 +27,6 @@ impl FlowCoordinator {
     pub fn new(operator_registry: ActorRef<OperatorRegistry>) -> Self {
         Self {
             clients: HashMap::default(),
-            client_ids: HashMap::default(),
             operator_registry,
         }
     }
@@ -51,7 +48,6 @@ 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",
@@ -79,28 +75,14 @@ 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(), client_id, actor = "FlowCoordinator", event = "client.connected");
+        info!(id = %actor.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/mod.rs

@@ -1,7 +1,8 @@
 use crate::{
     actors::{
         bootstrap::Bootstrapper, evm::EvmActor, flow_coordinator::FlowCoordinator,
-        operator_registry::OperatorRegistry, vault::Vault,
+        operator_registry::OperatorRegistry, proposal_manager::ProposalManager, vault::Vault,
+        vault_coordinator::VaultCoordinator,
     },
     db,
 };
@@ -14,7 +15,9 @@ pub mod bootstrap;
 pub mod evm;
 pub mod flow_coordinator;
 pub mod operator_registry;
+pub mod proposal_manager;
 pub mod vault;
+pub mod vault_coordinator;
 
 #[derive(Error, Debug)]
 pub enum SpawnError {
@@ -30,9 +33,11 @@ pub enum SpawnError {
 pub struct GlobalActors {
     pub vault: ActorRef<Vault>,
     pub bootstrapper: ActorRef<Bootstrapper>,
+    pub vault_coordinator: ActorRef<VaultCoordinator>,
     pub flow_coordinator: ActorRef<FlowCoordinator>,
     pub operator_registry: ActorRef<OperatorRegistry>,
     pub evm: ActorRef<EvmActor>,
+    pub proposal_manager: ActorRef<ProposalManager>,
     pub events: ActorRef<MessageBus>,
 }
 
@@ -47,7 +52,15 @@ impl GlobalActors {
         let operator_registry = OperatorRegistry::spawn(OperatorRegistry::default());
         Ok(Self {
             bootstrapper: Bootstrapper::spawn(Bootstrapper::new(&db).await?),
-            evm: EvmActor::spawn(EvmActor::new(key_holder.clone(), db)),
+            evm: EvmActor::spawn(EvmActor::new(key_holder.clone(), db.clone())),
+            vault_coordinator: VaultCoordinator::spawn(VaultCoordinator::new(
+                db.clone(),
+                key_holder.clone(),
+            )),
+            proposal_manager: ProposalManager::spawn(ProposalManager::new(
+                db,
+                key_holder.clone(),
+            )),
             vault: key_holder,
             flow_coordinator: FlowCoordinator::spawn(FlowCoordinator::new(
                 operator_registry.clone(),

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

@@ -0,0 +1,399 @@
+use crate::{
+    actors::vault::Vault,
+    db::{
+        self,
+        models::{NewProposal, NewProposalVote, Proposal, ProposalStatus, SqliteTimestamp},
+        schema,
+    },
+};
+use chrono::Utc;
+use diesel::{ExpressionMethods as _, QueryDsl};
+use diesel_async::RunQueryDsl;
+use kameo::{actor::ActorRef, messages};
+use tracing::{error, warn};
+
+pub const DEFAULT_TTL_SECS: i64 = 7 * 24 * 60 * 60; // 7 days
+
+#[derive(Debug, Clone)]
+pub enum ProposalKind {
+    ApproveSdkClient { client_id: i32 },
+}
+
+impl ProposalKind {
+    pub const fn kind_str(&self) -> &'static str {
+        match self {
+            Self::ApproveSdkClient { .. } => "approve_sdk_client",
+        }
+    }
+
+    pub fn encode_payload(&self) -> Vec<u8> {
+        match self {
+            Self::ApproveSdkClient { client_id } => client_id.to_be_bytes().to_vec(),
+        }
+    }
+
+    pub fn decode(kind: &str, payload: &[u8]) -> Result<Self, String> {
+        match kind {
+            "approve_sdk_client" => {
+                let bytes = <[u8; 4]>::try_from(payload)
+                    .map_err(|_| "invalid payload for approve_sdk_client".to_owned())?;
+                Ok(Self::ApproveSdkClient {
+                    client_id: i32::from_be_bytes(bytes),
+                })
+            }
+            other => Err(format!("unknown proposal kind: {other}")),
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum VoteOutcome {
+    Pending,
+    QuorumApproved,
+    QuorumRejected,
+}
+
+#[derive(Debug, thiserror::Error)]
+pub enum Error {
+    #[error("Proposal not found")]
+    ProposalNotFound,
+    #[error("Proposal is not pending")]
+    ProposalNotPending,
+    #[error("Operator already voted on this proposal")]
+    AlreadyVoted,
+    #[error("Invalid vote signature")]
+    InvalidSignature,
+    #[error("Operator not found")]
+    OperatorNotFound,
+    #[error("Database connection error: {0}")]
+    DatabaseConnection(#[from] db::PoolError),
+    #[error("Database query error: {0}")]
+    DatabaseQuery(#[from] diesel::result::Error),
+    #[error("Execution failed: {0}")]
+    ExecutionFailed(String),
+}
+
+#[derive(Debug)]
+pub struct ProposalSummary {
+    pub id: i32,
+    pub kind: String,
+    pub initiator_id: i32,
+    pub expires_at: SqliteTimestamp,
+    pub approve_count: i64,
+    pub reject_count: i64,
+}
+
+pub struct ProposalManager {
+    pub(crate) db: db::DatabasePool,
+    pub(crate) vault: ActorRef<Vault>,
+}
+
+impl ProposalManager {
+    pub const fn new(db: db::DatabasePool, vault: ActorRef<Vault>) -> Self {
+        Self { db, vault }
+    }
+}
+
+impl kameo::Actor for ProposalManager {
+    type Args = Self;
+    type Error = ();
+
+    async fn on_start(
+        args: Self::Args,
+        actor_ref: ActorRef<Self>,
+    ) -> Result<Self, Self::Error> {
+        let weak = actor_ref.downgrade();
+        tokio::spawn(async move {
+            loop {
+                tokio::time::sleep(tokio::time::Duration::from_hours(1)).await;
+                match weak.upgrade() {
+                    Some(r) => {
+                        let _ = r.ask(ExpireStale).await;
+                    }
+                    None => break,
+                }
+            }
+        });
+        Ok(args)
+    }
+}
+
+#[messages]
+impl ProposalManager {
+    #[message]
+    pub async fn create_proposal(
+        &mut self,
+        kind: ProposalKind,
+        initiator_id: i32,
+        ttl_secs: Option<i64>,
+    ) -> Result<i32, Error> {
+        let ttl = ttl_secs.unwrap_or(DEFAULT_TTL_SECS);
+        let expires_at = SqliteTimestamp::from(Utc::now() + chrono::Duration::seconds(ttl));
+
+        let new_proposal = NewProposal {
+            kind: kind.kind_str().to_owned(),
+            payload: kind.encode_payload(),
+            initiator_id,
+            expires_at,
+        };
+
+        let mut conn = self.db.get().await?;
+        let id: i32 = diesel::insert_into(schema::proposal::table)
+            .values(&new_proposal)
+            .returning(schema::proposal::id)
+            .get_result(&mut conn)
+            .await?;
+
+        Ok(id)
+    }
+
+    #[message]
+    pub async fn query_pending(&mut self, operator_id: i32) -> Vec<ProposalSummary> {
+        #[expect(
+            clippy::cast_possible_truncation,
+            clippy::as_conversions,
+            reason = "fixme! #84; this will break in 2038"
+        )]
+        let now_ts = Utc::now().timestamp() as i32;
+
+        let Ok(mut conn) = self.db.get().await else {
+            warn!("query_pending: failed to acquire DB connection");
+            return vec![];
+        };
+
+        let voted_ids: Vec<i32> = schema::proposal_vote::table
+            .filter(schema::proposal_vote::operator_id.eq(operator_id))
+            .select(schema::proposal_vote::proposal_id)
+            .load(&mut conn)
+            .await
+            .unwrap_or_default();
+
+        let proposals: Vec<Proposal> = schema::proposal::table
+            .filter(schema::proposal::status.eq(ProposalStatus::Pending))
+            .filter(schema::proposal::expires_at.gt(now_ts))
+            .filter(diesel::dsl::not(schema::proposal::id.eq_any(&voted_ids)))
+            .load(&mut conn)
+            .await
+            .unwrap_or_default();
+
+        let mut summaries = Vec::with_capacity(proposals.len());
+        for p in proposals {
+            let approve_count: i64 = schema::proposal_vote::table
+                .filter(schema::proposal_vote::proposal_id.eq(p.id))
+                .filter(schema::proposal_vote::approve.eq(true))
+                .count()
+                .get_result(&mut conn)
+                .await
+                .unwrap_or(0);
+            let reject_count: i64 = schema::proposal_vote::table
+                .filter(schema::proposal_vote::proposal_id.eq(p.id))
+                .filter(schema::proposal_vote::approve.eq(false))
+                .count()
+                .get_result(&mut conn)
+                .await
+                .unwrap_or(0);
+            summaries.push(ProposalSummary {
+                id: p.id,
+                kind: p.kind,
+                initiator_id: p.initiator_id,
+                expires_at: p.expires_at,
+                approve_count,
+                reject_count,
+            });
+        }
+        summaries
+    }
+
+    #[message]
+    pub async fn expire_stale(&mut self) -> usize {
+        #[expect(
+            clippy::cast_possible_truncation,
+            clippy::as_conversions,
+            reason = "fixme! #84; this will break in 2038"
+        )]
+        let now_ts = Utc::now().timestamp() as i32;
+
+        let Ok(mut conn) = self.db.get().await else {
+            warn!("expire_stale: failed to acquire DB connection");
+            return 0;
+        };
+
+        diesel::update(schema::proposal::table)
+            .filter(schema::proposal::status.eq(ProposalStatus::Pending))
+            .filter(schema::proposal::expires_at.lt(now_ts))
+            .set(schema::proposal::status.eq(ProposalStatus::Expired))
+            .execute(&mut conn)
+            .await
+            .unwrap_or(0)
+    }
+
+    #[message]
+    pub async fn cast_vote(
+        &mut self,
+        proposal_id: i32,
+        operator_id: i32,
+        approve: bool,
+        signature: Vec<u8>,
+    ) -> Result<VoteOutcome, Error> {
+        use arbiter_crypto::authn::{self, GOVERNANCE_CONTEXT};
+
+        let mut conn = self.db.get().await?;
+
+        // Load proposal — must exist
+        let proposal: Proposal = schema::proposal::table
+            .find(proposal_id)
+            .first(&mut conn)
+            .await
+            .map_err(|e| match e {
+                diesel::result::Error::NotFound => Error::ProposalNotFound,
+                other => Error::DatabaseQuery(other),
+            })?;
+
+        // Check for duplicate vote before status check so AlreadyVoted takes priority
+        let existing: i64 = schema::proposal_vote::table
+            .filter(schema::proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::proposal_vote::operator_id.eq(operator_id))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        if existing > 0 {
+            return Err(Error::AlreadyVoted);
+        }
+
+        if proposal.status != ProposalStatus::Pending {
+            return Err(Error::ProposalNotPending);
+        }
+
+        // Load operator public key from operator_identity
+        let pubkey_bytes: Vec<u8> = schema::operator_identity::table
+            .find(operator_id)
+            .select(schema::operator_identity::public_key)
+            .first(&mut conn)
+            .await
+            .map_err(|e| match e {
+                diesel::result::Error::NotFound => Error::OperatorNotFound,
+                other => Error::DatabaseQuery(other),
+            })?;
+
+        let pubkey = authn::PublicKey::try_from(pubkey_bytes.as_slice())
+            .map_err(|()| Error::InvalidSignature)?;
+
+        // Canonical vote message: proposal_id (i64 big-endian) || approve (u8)
+        let mut vote_msg = Vec::with_capacity(9);
+        vote_msg.extend_from_slice(&i64::from(proposal_id).to_be_bytes());
+        vote_msg.push(u8::from(approve));
+
+        let auth_sig = authn::Signature::try_from(signature.as_slice())
+            .map_err(|()| Error::InvalidSignature)?;
+
+        if !pubkey.verify_message(&vote_msg, GOVERNANCE_CONTEXT, &auth_sig) {
+            return Err(Error::InvalidSignature);
+        }
+
+        // Insert vote
+        diesel::insert_into(schema::proposal_vote::table)
+            .values(&NewProposalVote {
+                proposal_id,
+                operator_id,
+                approve,
+                signature,
+            })
+            .execute(&mut conn)
+            .await?;
+
+        // Quorum check
+        let total_operators: i64 = schema::operator_identity::table
+            .count()
+            .get_result(&mut conn)
+            .await?;
+        #[expect(
+            clippy::cast_possible_truncation,
+            clippy::cast_sign_loss,
+            clippy::as_conversions,
+            reason = "operator count is always a small positive integer"
+        )]
+        let threshold = crate::crypto::shamir::shamir_threshold(total_operators as usize);
+
+        let approve_count: i64 = schema::proposal_vote::table
+            .filter(schema::proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::proposal_vote::approve.eq(true))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+
+        let reject_count: i64 = schema::proposal_vote::table
+            .filter(schema::proposal_vote::proposal_id.eq(proposal_id))
+            .filter(schema::proposal_vote::approve.eq(false))
+            .count()
+            .get_result(&mut conn)
+            .await?;
+
+        #[expect(
+            clippy::cast_possible_wrap,
+            clippy::as_conversions,
+            reason = "threshold is derived from operator count, always fits i64"
+        )]
+        let threshold_i64 = threshold as i64;
+
+        if approve_count >= threshold_i64 {
+            diesel::update(schema::proposal::table.find(proposal_id))
+                .set(schema::proposal::status.eq(ProposalStatus::Approved))
+                .execute(&mut conn)
+                .await?;
+            drop(conn); // release connection before async execution
+            self.execute_proposal(&proposal).await?;
+            return Ok(VoteOutcome::QuorumApproved);
+        }
+
+        if reject_count > total_operators - threshold_i64 {
+            diesel::update(schema::proposal::table.find(proposal_id))
+                .set(schema::proposal::status.eq(ProposalStatus::Rejected))
+                .execute(&mut conn)
+                .await?;
+            return Ok(VoteOutcome::QuorumRejected);
+        }
+
+        Ok(VoteOutcome::Pending)
+    }
+}
+
+impl ProposalManager {
+    async fn execute_proposal(&self, proposal: &Proposal) -> Result<(), Error> {
+        let kind = ProposalKind::decode(&proposal.kind, &proposal.payload)
+            .map_err(Error::ExecutionFailed)?;
+        match kind {
+            ProposalKind::ApproveSdkClient { client_id } => {
+                self.execute_approve_sdk_client(client_id).await
+            }
+        }
+    }
+
+    async fn execute_approve_sdk_client(&self, client_id: i32) -> Result<(), Error> {
+        use arbiter_crypto::authn;
+        use crate::{
+            crypto::integrity,
+            peers::client::ClientCredentials,
+        };
+
+        let mut conn = self.db.get().await.map_err(Error::DatabaseConnection)?;
+
+        let pubkey_bytes: Vec<u8> = schema::program_client::table
+            .find(client_id)
+            .select(schema::program_client::public_key)
+            .first(&mut conn)
+            .await
+            .map_err(|e| Error::ExecutionFailed(format!("client not found: {e}")))?;
+
+        let pubkey = authn::PublicKey::try_from(pubkey_bytes.as_slice())
+            .map_err(|()| Error::ExecutionFailed("invalid client public key".to_owned()))?;
+
+        let creds = ClientCredentials { pubkey };
+
+        integrity::sign_entity(&mut conn, &self.vault, &creds, client_id)
+            .await
+            .map_err(|e| {
+                error!(?e, "Failed to sign integrity envelope for client");
+                Error::ExecutionFailed(e.to_string())
+            })
+    }
+}

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

@@ -1,13 +1,13 @@
 use crate::{
     crypto::{
-        KeyCell, derive_key,
+        KeyCell,
         encryption::v1::{self, Nonce},
         integrity::v1::HmacSha256,
     },
     db::{
         self,
         models::{self, RootKeyHistory, RootKeyHistoryId},
-        schema::{self},
+        schema,
     },
 };
 use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
@@ -22,7 +22,7 @@ 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, warn};
+use tracing::{error, info};
 
 pub mod events {
     #[derive(Clone, Copy)]
@@ -45,8 +45,6 @@ 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,
@@ -62,9 +60,6 @@ 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 {
@@ -84,8 +79,6 @@ enum State {
     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.
@@ -95,10 +88,8 @@ pub struct Vault {
     db: db::DatabasePool,
     state: State,
     events: ActorRef<MessageBus>,
-    unseal_failures: u32,
 }
 
-#[messages]
 impl Vault {
     pub async fn new(db: db::DatabasePool, events: ActorRef<MessageBus>) -> Result<Self, Error> {
         let state = {
@@ -118,10 +109,10 @@ impl Vault {
             }
         };
 
-        Ok(Self { db, state, events, unseal_failures: 0 })
+        Ok(Self { db, state, events })
     }
 
-    // Exclusive transaction to avoid race condtions if multiple vaults write
+    // Exclusive transaction to avoid race conditions if multiple vaults write
     // additional layer of protection against nonce-reuse
     async fn get_new_nonce(
         pool: &db::DatabasePool,
@@ -166,33 +157,37 @@ impl Vault {
             State::Sealed { .. } => Err(Error::Sealed),
         }
     }
+}
 
+#[messages]
+impl Vault {
     #[message]
-    pub async fn bootstrap(&mut self, seal_key_raw: SafeCell<Vec<u8>>) -> Result<(), Error> {
+    pub async fn bootstrap(&mut self, mut seal_key: KeyCell) -> Result<(), Error> {
-        if !matches!(self.state, State::Unbootstrapped) {
+        if !matches!(&self.state, State::Unbootstrapped) {
             return Err(Error::AlreadyBootstrapped);
         }
-        let salt = v1::generate_salt();
+
-        let mut seal_key = derive_key(seal_key_raw, &salt);
         let mut root_key = KeyCell::new_secure_random();
 
         // Zero nonces are fine because they are one-time
         let root_key_nonce = Nonce::default();
         let data_encryption_nonce = Nonce::default();
 
-        let root_key_ciphertext: Vec<u8> = root_key.0.read_inline(|reader| {
+        // Generate salt (kept for schema compat)
-            let root_key_reader = reader.as_slice();
+        let root_key_salt = v1::generate_salt();
+
+        let root_key_ciphertext: Vec<u8> = root_key.0.read_inline(|rk| {
             seal_key
-                .encrypt(&root_key_nonce, v1::ROOT_KEY_TAG, root_key_reader)
+                .encrypt(&root_key_nonce, v1::ROOT_KEY_TAG, rk.as_slice())
                 .map_err(|err| {
                     error!(?err, "Fatal bootstrap error");
                     Error::Encryption(err)
                 })
         })?;
 
+        let data_encryption_nonce_bytes = data_encryption_nonce.to_vec();
         let mut conn = self.db.get().await?;
 
-        let data_encryption_nonce_bytes = data_encryption_nonce.to_vec();
         let root_key_history_id = conn
             .transaction(async |conn| {
                 let root_key_history_id = insert_into(schema::root_key_history::table)
@@ -202,7 +197,7 @@ impl Vault {
                         root_key_encryption_nonce: root_key_nonce.to_vec(),
                         data_encryption_nonce: data_encryption_nonce_bytes.clone(),
                         schema_version: 1,
-                        salt: salt.to_vec(),
+                        salt: root_key_salt.to_vec(),
                     })
                     .returning(schema::root_key_history::id)
                     .get_result(&mut *conn)
@@ -231,70 +226,47 @@ impl Vault {
     }
 
     #[message]
-    pub async fn try_unseal(&mut self, seal_key_raw: SafeCell<Vec<u8>>) -> Result<(), Error> {
+    pub async fn try_unseal(&mut self, mut seal_key: KeyCell) -> Result<(), Error> {
-        if self.unseal_failures >= MAX_UNSEAL_ATTEMPTS {
-            return Err(Error::LockedOut);
-        }
-
         let State::Sealed {
             root_key_history_id,
         } = &self.state
         else {
             return Err(Error::NotBootstrapped);
         };
+        let root_key_history_id = *root_key_history_id;
 
-        // We don't want to hold connection while doing expensive KDF work
+        // We don't want to hold connection while doing expensive work
         let current_key = {
             let mut conn = self.db.get().await?;
             schema::root_key_history::table
-                .filter(schema::root_key_history::id.eq(*root_key_history_id))
+                .filter(schema::root_key_history::id.eq(root_key_history_id))
                 .select(RootKeyHistory::as_select())
                 .first(&mut conn)
                 .await?
         };
 
-        let salt = &current_key.salt;
-        let salt = v1::Salt::try_from(salt.as_slice()).map_err(|_| {
-            error!("Broken database: invalid salt for root key");
-            Error::BrokenDatabase
-        })?;
-        let mut seal_key = derive_key(seal_key_raw, &salt);
-
-        let mut root_key = SafeCell::new(current_key.ciphertext.clone());
-
         let nonce =
             Nonce::try_from(current_key.root_key_encryption_nonce.as_slice()).map_err(|()| {
                 error!("Broken database: invalid nonce for root key");
                 Error::BrokenDatabase
             })?;
 
-        if seal_key
+        let mut root_key_bytes = SafeCell::new(current_key.ciphertext.clone());
-            .decrypt_in_place(&nonce, v1::ROOT_KEY_TAG, &mut root_key)
+        seal_key
-            .is_err()
+            .decrypt_in_place(&nonce, v1::ROOT_KEY_TAG, &mut root_key_bytes)
-        {
+            .map_err(|err| {
-            self.unseal_failures += 1;
+                error!(?err, "Failed to unseal root key: invalid seal key");
-            if self.unseal_failures >= MAX_UNSEAL_ATTEMPTS {
+                Error::InvalidKey
-                error!(
+            })?;
-                    attempts = self.unseal_failures,
+
-                    "Vault locked: maximum failed unseal attempts reached"
+        let root_key = KeyCell::try_from(root_key_bytes).map_err(|()| {
-                );
+            error!("Broken database: invalid encryption key size");
-            } else {
+            Error::BrokenDatabase
-                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| {
+            root_key,
-                error!(?err, "Broken database: invalid encryption key size");
-                Error::BrokenDatabase
-            })?,
         });
 
         info!("Vault unsealed successfully");
@@ -303,10 +275,26 @@ 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, aad: Vec<u8>) -> Result<SafeCell<Vec<u8>>, Error> {
+    pub async fn seal(&mut self) -> Result<(), Error> {
+        let Unsealed {
+            root_key_history_id,
+            ..
+        } = Self::expect_unsealed(&mut self.state)?;
+
+        self.state = State::Sealed {
+            root_key_history_id: *root_key_history_id,
+        };
+        let _ = self.events.tell(Publish(events::VaultResealed)).await;
+        Ok(())
+    }
+}
+
+// Server-side cryptographic operations
+#[messages]
+impl Vault {
+    #[message]
+    pub async fn decrypt(&mut self, aead_id: i32) -> Result<SafeCell<Vec<u8>>, Error> {
         let Unsealed { root_key, .. } = Self::expect_unsealed(&mut self.state)?;
 
         let row: models::AeadEncrypted = {
@@ -328,15 +316,13 @@ impl Vault {
             Error::BrokenDatabase
         })?;
         let mut output = SafeCell::new(row.ciphertext);
-        root_key.decrypt_in_place(&nonce, &aad, &mut output)?;
+        root_key.decrypt_in_place(&nonce, v1::TAG, &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>>, aad: Vec<u8>) -> Result<i32, Error> {
+    pub async fn create_new(&mut self, mut plaintext: SafeCell<Vec<u8>>) -> Result<i32, Error> {
         let Unsealed {
             root_key,
             root_key_history_id,
@@ -348,7 +334,7 @@ impl Vault {
 
         let mut ciphertext_buffer = plaintext.write();
         let ciphertext_buffer: &mut Vec<u8> = ciphertext_buffer.as_mut();
-        root_key.encrypt_in_place(&nonce, &aad, &mut *ciphertext_buffer)?;
+        root_key.encrypt_in_place(&nonce, v1::TAG, &mut *ciphertext_buffer)?;
 
         let ciphertext = std::mem::take(ciphertext_buffer);
 
@@ -408,10 +394,7 @@ impl Vault {
         } = Self::expect_unsealed(&mut self.state)?;
 
         if *root_key_history_id != key_version {
-            return Err(Error::KeyVersionMismatch {
+            return Ok(false);
-                envelope: key_version,
-                current: *root_key_history_id,
-            });
         }
 
         let mut hmac = root_key.0.read_inline(|k| {
@@ -423,26 +406,11 @@ impl Vault {
 
         Ok(hmac.verify_slice(&expected_mac).is_ok())
     }
-
-    #[message]
-    pub async fn seal(&mut self) -> Result<(), Error> {
-        let Unsealed {
-            root_key_history_id,
-            ..
-        } = Self::expect_unsealed(&mut self.state)?;
-
-        self.state = State::Sealed {
-            root_key_history_id: *root_key_history_id,
-        };
-        let _ = self.events.tell(Publish(events::VaultResealed)).await;
-        Ok(())
-    }
 }
 
 #[cfg(test)]
 mod tests {
     use crate::actors::GlobalActors;
-    use crate::db::models::RootKeyHistory;
     use arbiter_crypto::safecell::SafeCellHandle as _;
 
     use super::*;
@@ -451,8 +419,7 @@ mod tests {
         let mut actor = Vault::new(db.clone(), GlobalActors::spawn_message_bus())
             .await
             .unwrap();
-        let seal_key = SafeCell::new(b"test-seal-key".to_vec());
+        actor.bootstrap(KeyCell::from([0u8; 32])).await.unwrap();
-        actor.bootstrap(seal_key).await.unwrap();
         actor
     }
 
@@ -461,13 +428,12 @@ mod tests {
     async fn nonce_monotonic_even_when_nonce_allocation_interleaves() {
         let db = db::create_test_pool().await;
         let mut actor = bootstrapped_actor(&db).await;
-
         let State::Unsealed(Unsealed {
             root_key_history_id,
             ..
         }) = actor.state
         else {
-            panic!("expected unsealed state")
+            panic!("expected unsealed state");
         };
 
         let n1 = Vault::get_new_nonce(&db, root_key_history_id)
@@ -487,7 +453,7 @@ mod tests {
         assert_eq!(root_row.data_encryption_nonce, n2.to_vec());
 
         let id = actor
-            .create_new(SafeCell::new(b"post-interleave".to_vec()), b"test-aad".to_vec())
+            .create_new(SafeCell::new(b"post-interleave".to_vec()))
             .await
             .unwrap();
         let row: models::AeadEncrypted = schema::aead_encrypted::table

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

@@ -0,0 +1,303 @@
+use std::collections::HashMap;
+
+use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
+use diesel::{ExpressionMethods as _, QueryDsl};
+use diesel_async::RunQueryDsl;
+use kameo::{Actor, actor::ActorRef, messages};
+use rand_core::{OsRng, RngCore as _};
+use tracing::error;
+
+use crate::{
+    actors::vault::{Bootstrap, TryUnseal, Vault},
+    crypto::{KeyCell, derive_key, encryption::v1::Nonce, shamir, shamir::shamir_threshold},
+    db::{self, models, schema},
+};
+
+#[derive(Debug, thiserror::Error)]
+pub enum Error {
+    #[error("Already coordinating a bootstrap")]
+    AlreadyBootstrapping,
+    #[error("Already coordinating an unseal")]
+    AlreadyUnsealing,
+    #[error("Bootstrap not in progress")]
+    NotBootstrapping,
+    #[error("Unseal not in progress")]
+    NotUnsealing,
+    #[error("Operator already contributed")]
+    DuplicateContribution,
+    #[error("Operator not found in database")]
+    OperatorNotFound,
+    #[error("Invalid passphrase (decryption failed)")]
+    InvalidPassphrase,
+    #[error("Shamir error: {0}")]
+    Shamir(String),
+    #[error("Database connection error: {0}")]
+    DatabaseConnection(#[from] db::PoolError),
+    #[error("Database query error: {0}")]
+    DatabaseQuery(#[from] diesel::result::Error),
+    #[error("Encryption error")]
+    Encryption,
+    #[error("Vault error")]
+    VaultError,
+    #[error("Broken database")]
+    BrokenDatabase,
+}
+
+// Passphrases stored as plain Vec<u8> (not SafeCell) so CoordinatorState is Sync.
+// They are ephemeral and dropped immediately after use.
+enum CoordinatorState {
+    Idle,
+    Bootstrapping {
+        declared_count: usize,
+        passphrases: HashMap<i32, Vec<u8>>,
+    },
+    Unsealing {
+        threshold: usize,
+        passphrases: HashMap<i32, Vec<u8>>,
+    },
+}
+
+#[derive(Actor)]
+pub struct VaultCoordinator {
+    db: db::DatabasePool,
+    vault: ActorRef<Vault>,
+    state: CoordinatorState,
+}
+
+impl VaultCoordinator {
+    pub const fn new(db: db::DatabasePool, vault: ActorRef<Vault>) -> Self {
+        Self {
+            db,
+            vault,
+            state: CoordinatorState::Idle,
+        }
+    }
+}
+
+const SHARE_AAD: &[u8] = b"arbiter/shamir-share/v1";
+
+async fn finalize_bootstrap(
+    db: db::DatabasePool,
+    vault: ActorRef<Vault>,
+    passphrases: HashMap<i32, Vec<u8>>,
+) -> Result<(), Error> {
+    let total = passphrases.len();
+    let threshold = shamir_threshold(total);
+
+    // Generate random 32-byte seal key
+    let mut seal_key_bytes = [0u8; 32];
+    OsRng.fill_bytes(&mut seal_key_bytes);
+
+    // Split seal key into shares using Shamir (OsRng from rand_core 0.6, compatible with vsss-rs)
+    let shares = shamir::split_key(threshold, total, &seal_key_bytes, OsRng)
+        .map_err(|e| Error::Shamir(e.to_string()))?;
+
+    let seal_key = KeyCell::from(seal_key_bytes);
+
+    let mut conn = db.get().await?;
+
+    for ((operator_id_raw, passphrase_bytes), share) in passphrases.into_iter().zip(shares) {
+        // Generate a fresh share_salt for this operator
+        let mut share_salt = vec![0u8; 32];
+        OsRng.fill_bytes(&mut share_salt);
+
+        // Derive share encryption key from passphrase + salt
+        let mut passphrase_cell = SafeCell::new(passphrase_bytes);
+        let mut share_seal_key = derive_key(&mut passphrase_cell, &share_salt);
+
+        // Encrypt this operator's share
+        let nonce = Nonce::default();
+        let encrypted_share = share_seal_key
+            .encrypt(&nonce, SHARE_AAD, &share)
+            .map_err(|_| Error::Encryption)?;
+
+        let nonce_bytes = nonce.to_vec();
+
+        diesel::replace_into(schema::operator::table)
+            .values((
+                schema::operator::id.eq(Some(operator_id_raw)),
+                schema::operator::share.eq(&encrypted_share),
+                schema::operator::share_nonce.eq(&nonce_bytes),
+                schema::operator::share_salt.eq(&share_salt),
+                schema::operator::created_at.eq(models::SqliteTimestamp::now()),
+                schema::operator::updated_at.eq(models::SqliteTimestamp::now()),
+            ))
+            .execute(&mut conn)
+            .await?;
+    }
+
+    vault
+        .ask(Bootstrap { seal_key })
+        .await
+        .map_err(|err| {
+            error!(?err, "Vault bootstrap failed");
+            Error::VaultError
+        })?;
+
+    Ok(())
+}
+
+async fn finalize_unseal(
+    db: db::DatabasePool,
+    vault: ActorRef<Vault>,
+    passphrases: HashMap<i32, Vec<u8>>,
+) -> Result<(), Error> {
+    let mut conn = db.get().await?;
+    let mut shares: Vec<Vec<u8>> = Vec::new();
+
+    for (operator_id_raw, passphrase_bytes) in passphrases {
+        let (encrypted_share, share_nonce_bytes, share_salt): (Vec<u8>, Vec<u8>, Vec<u8>) =
+            schema::operator::table
+                .filter(schema::operator::id.eq(Some(operator_id_raw)))
+                .select((
+                    schema::operator::share,
+                    schema::operator::share_nonce,
+                    schema::operator::share_salt,
+                ))
+                .first(&mut conn)
+                .await
+                .map_err(|_| Error::OperatorNotFound)?;
+
+        let nonce = Nonce::try_from(share_nonce_bytes.as_slice()).map_err(|()| {
+            error!(operator_id = operator_id_raw, "Invalid nonce in DB");
+            Error::BrokenDatabase
+        })?;
+
+        let mut passphrase_cell = SafeCell::new(passphrase_bytes);
+        let mut share_seal_key = derive_key(&mut passphrase_cell, &share_salt);
+
+        let mut share_buffer = SafeCell::new(encrypted_share);
+        share_seal_key
+            .decrypt_in_place(&nonce, SHARE_AAD, &mut share_buffer)
+            .map_err(|_| Error::InvalidPassphrase)?;
+
+        let decrypted_share = share_buffer.read().clone();
+        shares.push(decrypted_share);
+    }
+
+    let seal_key_bytes =
+        shamir::combine_shares(&shares).map_err(|e| Error::Shamir(e.to_string()))?;
+
+    let seal_key = KeyCell::from(seal_key_bytes);
+
+    vault
+        .ask(TryUnseal { seal_key })
+        .await
+        .map_err(|err| {
+            error!(?err, "Vault unseal failed");
+            Error::VaultError
+        })?;
+
+    Ok(())
+}
+
+#[messages]
+impl VaultCoordinator {
+    /// Phase 1 of multi-operator bootstrap: declare the committee size.
+    #[message]
+    #[expect(clippy::unused_async, reason = "kameo requires messages to be async")]
+    pub async fn start_bootstrap(
+        &mut self,
+        operator_id: i32,
+        declared_count: usize,
+    ) -> Result<(), Error> {
+        let _ = operator_id; // fixme!: any authenticated operator may announce the committee size. the first call wins
+        if !matches!(self.state, CoordinatorState::Idle) {
+            return Err(Error::AlreadyBootstrapping);
+        }
+        self.state = CoordinatorState::Bootstrapping {
+            declared_count,
+            passphrases: HashMap::new(),
+        };
+        Ok(())
+    }
+
+    /// Phase 2 of multi-operator bootstrap: contribute a passphrase.
+    /// Returns Ok(true) when all operators contributed and bootstrap finalized.
+    #[message]
+    pub async fn contribute_bootstrap(
+        &mut self,
+        operator_id: i32,
+        mut passphrase: SafeCell<Vec<u8>>,
+    ) -> Result<bool, Error> {
+        let CoordinatorState::Bootstrapping {
+            declared_count,
+            passphrases,
+        } = &mut self.state
+        else {
+            return Err(Error::NotBootstrapping);
+        };
+
+        if passphrases.contains_key(&operator_id) {
+            return Err(Error::DuplicateContribution);
+        }
+
+        // Extract bytes immediately so state stays Sync
+        let passphrase_bytes = passphrase.read().to_vec();
+        passphrases.insert(operator_id, passphrase_bytes);
+
+        if passphrases.len() < *declared_count {
+            return Ok(false);
+        }
+
+        let CoordinatorState::Bootstrapping { passphrases, .. } =
+            std::mem::replace(&mut self.state, CoordinatorState::Idle)
+        else {
+            unreachable!()
+        };
+
+        finalize_bootstrap(self.db.clone(), self.vault.clone(), passphrases).await?;
+        Ok(true)
+    }
+
+    /// Contribute a passphrase for vault unseal.
+    /// Returns Ok(true) when threshold reached and vault is unsealed.
+    #[message]
+    pub async fn contribute_unseal(
+        &mut self,
+        operator_id: i32,
+        mut passphrase: SafeCell<Vec<u8>>,
+    ) -> Result<bool, Error> {
+        if matches!(self.state, CoordinatorState::Idle) {
+            let mut conn = self.db.get().await?;
+            let count: i64 = schema::operator::table
+                .count()
+                .get_result(&mut conn)
+                .await?;
+            let threshold = shamir_threshold(usize::try_from(count).unwrap_or_default());
+
+            self.state = CoordinatorState::Unsealing {
+                threshold,
+                passphrases: HashMap::new(),
+            };
+        }
+
+        let CoordinatorState::Unsealing {
+            threshold,
+            passphrases,
+        } = &mut self.state
+        else {
+            return Err(Error::NotUnsealing);
+        };
+
+        if passphrases.contains_key(&operator_id) {
+            return Err(Error::DuplicateContribution);
+        }
+
+        let passphrase_bytes = passphrase.read().to_vec();
+        passphrases.insert(operator_id, passphrase_bytes);
+
+        if passphrases.len() < *threshold {
+            return Ok(false);
+        }
+
+        let CoordinatorState::Unsealing { passphrases, .. } =
+            std::mem::replace(&mut self.state, CoordinatorState::Idle)
+        else {
+            unreachable!()
+        };
+
+        finalize_unseal(self.db.clone(), self.vault.clone(), passphrases).await?;
+        Ok(true)
+    }
+}

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

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

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

@@ -192,9 +192,7 @@ pub async fn verify_entity<E: Integrable>(
         Ok(false) => Err(Error::MacMismatch {
             entity_kind: E::KIND,
         }),
-        Err(SendError::HandlerError(
+        Err(SendError::HandlerError(vault::Error::Sealed)) => Ok(AttestationStatus::Unavailable),
-            vault::Error::Sealed | vault::Error::KeyVersionMismatch { .. },
-        )) => Ok(AttestationStatus::Unavailable),
         Err(_) => Err(Error::VaultSend),
     }
 }
@@ -217,8 +215,6 @@ mod tests {
         },
         db::{self, schema},
     };
-    use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
-
     use super::{Error, Integrable, sign_entity, verify_entity};
     #[derive(Clone, arbiter_macros::Hashable)]
     struct DummyEntity {
@@ -237,7 +233,7 @@ mod tests {
         );
         actor
             .ask(Bootstrap {
-                seal_key_raw: SafeCell::new(b"integrity-test-seal-key".to_vec()),
+                seal_key: crate::crypto::KeyCell::from([0u8; 32]),
             })
             .await
             .unwrap();
@@ -333,47 +329,4 @@ 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

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

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

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

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

@@ -15,10 +15,11 @@ use restructed::Models;
 pub mod types {
     use chrono::{DateTime, Utc};
     use diesel::{
+        backend::Backend,
         deserialize::{FromSql, FromSqlRow},
         expression::AsExpression,
         serialize::{IsNull, ToSql},
-        sql_types::Integer,
+        sql_types::{Integer, Text},
         sqlite::{Sqlite, SqliteType},
     };
 
@@ -61,7 +62,7 @@ pub mod types {
 
     impl FromSql<Integer, Sqlite> for SqliteTimestamp {
         fn from_sql(
-            mut bytes: <Sqlite as diesel::backend::Backend>::RawValue<'_>,
+            mut bytes: <Sqlite as Backend>::RawValue<'_>,
         ) -> diesel::deserialize::Result<Self> {
             let Some(SqliteType::Long) = bytes.value_type() else {
                 return Err(format!(
@@ -141,6 +142,45 @@ pub mod types {
     declare_id!(TlsHistoryId);
     declare_id!(EvmWalletId);
     declare_id!(ClientId);
+
+    #[derive(Debug, Clone, PartialEq, Eq, AsExpression, FromSqlRow)]
+    #[diesel(sql_type = Text)]
+    pub enum ProposalStatus {
+        Pending,
+        Approved,
+        Rejected,
+        Expired,
+    }
+
+    impl ToSql<Text, Sqlite> for ProposalStatus {
+        fn to_sql<'b>(
+            &'b self,
+            out: &mut diesel::serialize::Output<'b, '_, Sqlite>,
+        ) -> diesel::serialize::Result {
+            let s: &str = match self {
+                Self::Pending => "pending",
+                Self::Approved => "approved",
+                Self::Rejected => "rejected",
+                Self::Expired => "expired",
+            };
+            <str as ToSql<Text, Sqlite>>::to_sql(s, out)
+        }
+    }
+
+    impl FromSql<Text, Sqlite> for ProposalStatus {
+        fn from_sql(
+            bytes: <Sqlite as Backend>::RawValue<'_>,
+        ) -> diesel::deserialize::Result<Self> {
+            let s = <String as FromSql<Text, Sqlite>>::from_sql(bytes)?;
+            match s.as_str() {
+                "pending" => Ok(Self::Pending),
+                "approved" => Ok(Self::Approved),
+                "rejected" => Ok(Self::Rejected),
+                "expired" => Ok(Self::Expired),
+                other => Err(format!("Unknown proposal status: {other}").into()),
+            }
+        }
+    }
 }
 pub use types::*;
 
@@ -285,6 +325,7 @@ pub struct Operator {
     pub id: OperatorId,
     pub share: Vec<u8>,
     pub share_nonce: Vec<u8>,
+    pub share_salt: Vec<u8>,
     pub created_at: SqliteTimestamp,
     pub updated_at: SqliteTimestamp,
 }
@@ -437,3 +478,45 @@ pub struct IntegrityEnvelope {
     pub signed_at: SqliteTimestamp,
     pub created_at: SqliteTimestamp,
 }
+
+#[derive(Debug, Queryable, Selectable, Identifiable)]
+#[diesel(table_name = schema::proposal, check_for_backend(Sqlite))]
+pub struct Proposal {
+    pub id: i32,
+    pub kind: String,
+    pub payload: Vec<u8>,
+    pub initiator_id: i32,
+    pub created_at: SqliteTimestamp,
+    pub expires_at: SqliteTimestamp,
+    pub status: ProposalStatus,
+}
+
+#[derive(Debug, Insertable)]
+#[diesel(table_name = schema::proposal, check_for_backend(Sqlite))]
+pub struct NewProposal {
+    pub kind: String,
+    pub payload: Vec<u8>,
+    pub initiator_id: i32,
+    // status defaults to 'pending' at the DB layer
+    pub expires_at: SqliteTimestamp,
+}
+
+#[derive(Debug, Queryable, Selectable, Identifiable)]
+#[diesel(table_name = schema::proposal_vote, check_for_backend(Sqlite))]
+pub struct ProposalVote {
+    pub id: i32,
+    pub proposal_id: i32,
+    pub operator_id: i32,
+    pub approve: bool,
+    pub signature: Vec<u8>,
+    pub voted_at: SqliteTimestamp,
+}
+
+#[derive(Debug, Insertable)]
+#[diesel(table_name = schema::proposal_vote, check_for_backend(Sqlite))]
+pub struct NewProposalVote {
+    pub proposal_id: i32,
+    pub operator_id: i32,
+    pub approve: bool,
+    pub signature: Vec<u8>,
+}

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

@@ -157,6 +157,7 @@ diesel::table! {
         id -> Nullable<Integer>,
         share -> Binary,
         share_nonce -> Binary,
+        share_salt -> Binary,
         created_at -> Integer,
         updated_at -> Integer,
     }
@@ -171,6 +172,29 @@ diesel::table! {
     }
 }
 
+diesel::table! {
+    proposal (id) {
+        id -> Integer,
+        kind -> Text,
+        payload -> Binary,
+        initiator_id -> Integer,
+        created_at -> Integer,
+        expires_at -> Integer,
+        status -> Text,
+    }
+}
+
+diesel::table! {
+    proposal_vote (id) {
+        id -> Integer,
+        proposal_id -> Integer,
+        operator_id -> Integer,
+        approve -> Bool,
+        signature -> Binary,
+        voted_at -> Integer,
+    }
+}
+
 diesel::table! {
     program_client (id) {
         id -> Integer,
@@ -224,6 +248,9 @@ diesel::joinable!(evm_wallet_access -> evm_wallet (wallet_id));
 diesel::joinable!(evm_wallet_access -> program_client (client_id));
 diesel::joinable!(operator -> operator_identity (id));
 diesel::joinable!(program_client -> client_metadata (metadata_id));
+diesel::joinable!(proposal -> operator_identity (initiator_id));
+diesel::joinable!(proposal_vote -> proposal (proposal_id));
+diesel::joinable!(proposal_vote -> operator_identity (operator_id));
 
 diesel::allow_tables_to_appear_in_same_query!(
     aead_encrypted,
@@ -244,6 +271,8 @@ diesel::allow_tables_to_appear_in_same_query!(
     operator,
     operator_identity,
     program_client,
+    proposal,
+    proposal_vote,
     root_key_history,
     tls_history,
 );

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

@@ -1,34 +1,28 @@
-use diesel_async::{AsyncConnection, RunQueryDsl};
-use kameo::actor::ActorRef;
-
 use crate::{
     actors::vault::Vault,
     crypto::integrity,
     db::{
         self, DatabaseError,
         models::{
-            EvmBasicGrant, EvmEtherTransferGrant, EvmEtherTransferGrantTarget,
+            EvmBasicGrant, EvmWalletAccess, NewEvmBasicGrant, NewEvmTransactionLog, SqliteTimestamp,
-            EvmEtherTransferLimit, EvmTokenTransferGrant, EvmTokenTransferVolumeLimit,
-            EvmWalletAccess, NewEvmBasicGrant, NewEvmTransactionLog, SqliteTimestamp,
         },
         schema::{self, evm_transaction_log},
     },
     evm::policies::{
         CombinedSettings, DatabaseID, EvalContext, EvalViolation, Grant, Policy,
-        SharedGrantSettings, SpecificGrant, SpecificMeaning, VolumeRateLimit,
+        SharedGrantSettings, SpecificGrant, SpecificMeaning, ether_transfer::EtherTransfer,
-        ether_transfer::EtherTransfer, token_transfers::TokenTransfer,
+        token_transfers::TokenTransfer,
     },
 };
 
 use alloy::{
     consensus::TxEip1559,
-    primitives::{Address, TxKind, U256},
+    primitives::{TxKind, U256},
 };
 use chrono::Utc;
-use diesel::{
+use diesel::{ExpressionMethods as _, QueryDsl as _, QueryResult, insert_into, sqlite::Sqlite};
-    ExpressionMethods as _, OptionalExtension, QueryDsl as _, QueryResult, SelectableHelper,
+use diesel_async::{AsyncConnection, RunQueryDsl};
-    insert_into, sqlite::Sqlite, update,
+use kameo::actor::ActorRef;
-};
 
 pub mod abi;
 pub mod safe_signer;
@@ -278,151 +272,6 @@ impl Engine {
         Ok(id)
     }
 
-    pub async fn revoke_grant(
-        &self,
-        basic_grant_id: i32,
-    ) -> Result<(), DatabaseError> {
-        let mut conn = self.db.get().await.map_err(DatabaseError::from)?;
-        let vault = self.vault.clone();
-
-        conn.transaction(async move |conn| {
-            use crate::db::schema::{
-                evm_basic_grant, evm_ether_transfer_grant, evm_ether_transfer_grant_target,
-                evm_ether_transfer_limit, evm_token_transfer_grant,
-                evm_token_transfer_volume_limit,
-            };
-
-            update(evm_basic_grant::table)
-                .filter(evm_basic_grant::id.eq(basic_grant_id))
-                .set(evm_basic_grant::revoked_at.eq(SqliteTimestamp(Utc::now())))
-                .execute(&mut *conn)
-                .await?;
-
-            let basic_grant: EvmBasicGrant = evm_basic_grant::table
-                .filter(evm_basic_grant::id.eq(basic_grant_id))
-                .select(EvmBasicGrant::as_select())
-                .first(&mut *conn)
-                .await?;
-
-            let shared = SharedGrantSettings::try_from_model(basic_grant)?;
-
-            if let Some(ether_grant) = evm_ether_transfer_grant::table
-                .filter(evm_ether_transfer_grant::basic_grant_id.eq(basic_grant_id))
-                .select(EvmEtherTransferGrant::as_select())
-                .first(&mut *conn)
-                .await
-                .optional()?
-            {
-                let target_rows: Vec<EvmEtherTransferGrantTarget> =
-                    evm_ether_transfer_grant_target::table
-                        .filter(evm_ether_transfer_grant_target::grant_id.eq(ether_grant.id))
-                        .select(EvmEtherTransferGrantTarget::as_select())
-                        .load(&mut *conn)
-                        .await?;
-                let targets: Vec<Address> = target_rows
-                    .into_iter()
-                    .filter_map(|target| {
-                        let arr: [u8; 20] = target.address.try_into().ok()?;
-                        Some(Address::from(arr))
-                    })
-                    .collect();
-
-                let limit: EvmEtherTransferLimit = evm_ether_transfer_limit::table
-                    .filter(evm_ether_transfer_limit::id.eq(ether_grant.limit_id))
-                    .select(EvmEtherTransferLimit::as_select())
-                    .first(&mut *conn)
-                    .await?;
-
-                let settings = CombinedSettings {
-                    shared: shared.clone(),
-                    specific: policies::ether_transfer::Settings {
-                        target: targets,
-                        limit: VolumeRateLimit {
-                            max_volume: utils::try_bytes_to_u256(&limit.max_volume).map_err(
-                                |err| {
-                                    diesel::result::Error::DeserializationError(Box::new(err))
-                                },
-                            )?,
-                            window: chrono::Duration::seconds(limit.window_secs.into()),
-                        },
-                    },
-                };
-
-                integrity::sign_entity(&mut *conn, &vault, &settings, basic_grant_id)
-                    .await
-                    .map_err(|_| diesel::result::Error::RollbackTransaction)?;
-
-                return QueryResult::Ok(());
-            }
-
-            if let Some(token_grant) = evm_token_transfer_grant::table
-                .filter(evm_token_transfer_grant::basic_grant_id.eq(basic_grant_id))
-                .select(EvmTokenTransferGrant::as_select())
-                .first(&mut *conn)
-                .await
-                .optional()?
-            {
-                let volume_limit_rows: Vec<EvmTokenTransferVolumeLimit> =
-                    evm_token_transfer_volume_limit::table
-                        .filter(evm_token_transfer_volume_limit::grant_id.eq(token_grant.id))
-                        .select(EvmTokenTransferVolumeLimit::as_select())
-                        .load(&mut *conn)
-                        .await?;
-                let volume_limits: Vec<VolumeRateLimit> = volume_limit_rows
-                    .into_iter()
-                    .map(|row| {
-                        Ok(VolumeRateLimit {
-                            max_volume: utils::try_bytes_to_u256(&row.max_volume).map_err(
-                                |err| {
-                                    diesel::result::Error::DeserializationError(Box::new(err))
-                                },
-                            )?,
-                            window: chrono::Duration::seconds(row.window_secs.into()),
-                        })
-                    })
-                    .collect::<QueryResult<Vec<_>>>()?;
-
-                let target: Option<Address> = match token_grant.receiver {
-                    None => None,
-                    Some(bytes) => {
-                        let arr: [u8; 20] = bytes.try_into().map_err(|_| {
-                            diesel::result::Error::DeserializationError(
-                                "Invalid receiver address length".into(),
-                            )
-                        })?;
-                        Some(Address::from(arr))
-                    }
-                };
-
-                let token_contract: [u8; 20] =
-                    token_grant.token_contract.clone().try_into().map_err(|_| {
-                        diesel::result::Error::DeserializationError(
-                            "Invalid token contract address length".into(),
-                        )
-                    })?;
-
-                let settings = CombinedSettings {
-                    shared,
-                    specific: policies::token_transfers::Settings {
-                        token_contract: Address::from(token_contract),
-                        target,
-                        volume_limits,
-                    },
-                };
-
-                integrity::sign_entity(&mut *conn, &vault, &settings, basic_grant_id)
-                    .await
-                    .map_err(|_| diesel::result::Error::RollbackTransaction)?;
-
-                return QueryResult::Ok(());
-            }
-
-            Err(diesel::result::Error::NotFound)
-        })
-        .await
-        .map_err(DatabaseError::from)
-    }
-
     async fn list_one_kind<Kind: Policy, Y>(
         &self,
         conn: &mut impl AsyncConnection<Backend = Sqlite>,
@@ -502,15 +351,11 @@ impl Engine {
 #[cfg(test)]
 mod tests {
     use alloy::primitives::{Address, Bytes, U256, address};
-    use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
     use chrono::{Duration, Utc};
     use diesel::{SelectableHelper, insert_into};
     use diesel_async::RunQueryDsl;
-    use kameo::{actor::ActorRef, prelude::Spawn};
     use rstest::rstest;
 
-    use crate::actors::{GlobalActors, vault::{Bootstrap, Vault}};
-    use crate::crypto::integrity;
     use crate::db::{
         self, DatabaseConnection,
         models::{
@@ -519,10 +364,8 @@ mod tests {
         },
         schema::{evm_basic_grant, evm_transaction_log},
     };
-    use crate::evm::policies::ether_transfer::EtherTransfer;
     use crate::evm::policies::{
-        CombinedSettings, EvalContext, EvalViolation, Policy, SharedGrantSettings,
+        EvalContext, EvalViolation, SharedGrantSettings, TransactionRateLimit,
-        TransactionRateLimit, VolumeRateLimit,
     };
 
     use super::check_shared_constraints;
@@ -554,7 +397,6 @@ mod tests {
             chain: CHAIN_ID,
             valid_from: None,
             valid_until: None,
-            revoked_at: None,
             max_gas_fee_per_gas: None,
             max_priority_fee_per_gas: None,
             rate_limit: None,
@@ -763,115 +605,4 @@ mod tests {
             assert!(violations.is_empty());
         }
     }
-
-    async fn bootstrapped_vault(db: &db::DatabasePool) -> ActorRef<Vault> {
-        let actor = Vault::spawn(
-            Vault::new(db.clone(), GlobalActors::spawn_message_bus())
-                .await
-                .unwrap(),
-        );
-        actor
-            .ask(Bootstrap {
-                seal_key_raw: SafeCell::new(b"integrity-test-seal-key".to_vec()),
-            })
-            .await
-            .unwrap();
-        actor
-    }
-
-    #[tokio::test]
-    async fn revoke_grant_preserves_revoked_integrity() {
-        use crate::db::schema::evm_basic_grant;
-        use diesel::ExpressionMethods as _;
-
-        let db = db::create_test_pool().await;
-        let vault = bootstrapped_vault(&db).await;
-        let engine = super::Engine::new(db.clone(), vault.clone());
-
-        let full_grant = CombinedSettings {
-            shared: SharedGrantSettings {
-                wallet_access_id: WALLET_ACCESS_ID,
-                chain: CHAIN_ID,
-                valid_from: None,
-                valid_until: None,
-                revoked_at: None,
-                max_gas_fee_per_gas: None,
-                max_priority_fee_per_gas: None,
-                rate_limit: None,
-            },
-            specific: super::policies::ether_transfer::Settings {
-                target: vec![RECIPIENT],
-                limit: VolumeRateLimit {
-                    max_volume: U256::from(100u64),
-                    window: Duration::hours(1),
-                },
-            },
-        };
-
-        let grant_id = engine
-            .create_grant::<EtherTransfer>(full_grant)
-            .await
-            .unwrap();
-
-        engine.revoke_grant(grant_id).await.unwrap();
-
-        let mut conn = db.get().await.unwrap();
-        diesel::update(evm_basic_grant::table)
-            .filter(evm_basic_grant::id.eq(grant_id))
-            .set(evm_basic_grant::revoked_at.eq::<Option<SqliteTimestamp>>(None))
-            .execute(&mut conn)
-            .await
-            .unwrap();
-
-        let wallet_access = EvmWalletAccess {
-            id: WALLET_ACCESS_ID,
-            wallet_id: EvmWalletId::from_raw(10),
-            client_id: 20,
-            created_at: SqliteTimestamp(Utc::now()),
-        };
-        let context = EvalContext {
-            target: wallet_access,
-            chain: CHAIN_ID,
-            to: RECIPIENT,
-            value: U256::ONE,
-            calldata: Bytes::new(),
-            max_fee_per_gas: 1,
-            max_priority_fee_per_gas: 1,
-        };
-
-        let grant = EtherTransfer::try_find_grant(
-            &context, &mut conn,
-        )
-        .await
-        .unwrap()
-        .unwrap();
-
-        let result =
-            integrity::verify_entity(&mut conn, &vault, &grant.settings, grant.id).await;
-
-        assert!(matches!(
-            result,
-            Err(integrity::Error::MacMismatch { .. })
-        ));
-    }
-
-    #[test]
-    fn shared_settings_hash_changes_when_revoked_at_changes() {
-        use arbiter_crypto::hashing::Hashable;
-        use sha2::Digest;
-
-        let active = shared_settings();
-        let revoked = SharedGrantSettings {
-            revoked_at: Some(Utc::now()),
-            ..shared_settings()
-        };
-
-        let mut active_hash = sha2::Sha256::new();
-        active.hash(&mut active_hash);
-
-        let mut revoked_hash = sha2::Sha256::new();
-        revoked.hash(&mut revoked_hash);
-
-        assert_ne!(active_hash.finalize(), revoked_hash.finalize());
-    }
 }

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

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

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

@@ -80,7 +80,6 @@ fn shared() -> SharedGrantSettings {
         chain: CHAIN_ID,
         valid_from: None,
         valid_until: None,
-        revoked_at: None,
         max_gas_fee_per_gas: None,
         max_priority_fee_per_gas: None,
         rate_limit: None,

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

@@ -98,7 +98,6 @@ fn shared() -> SharedGrantSettings {
         chain: CHAIN_ID,
         valid_from: None,
         valid_until: None,
-        revoked_at: None,
         max_gas_fee_per_gas: None,
         max_priority_fee_per_gas: None,
         rate_limit: None,

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

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

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

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

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

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

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

@@ -80,7 +80,7 @@ impl Sender<Result<auth::Outbound, auth::Error>> for AuthTransportAdapter<'_> {
                         .timestamp
                         .timestamp_nanos_opt()
                         .expect("timestamp within range")
-                        .cast_unsigned(),
+                        as u64,
                     random: challenge.nonce.to_vec(),
                 })
             }
@@ -171,7 +171,7 @@ impl Receiver<auth::Inbound> for AuthTransportAdapter<'_> {
 
                 Some(auth::Inbound::AuthChallengeRequest {
                     pubkey,
-                    bootstrap_token: bootstrap_token.map(String::into_bytes),
+                    bootstrap_token,
                 })
             }
             AuthRequestPayload::ChallengeSolution(ProtoAuthChallengeSolution { signature }) => {

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

@@ -217,11 +217,6 @@ 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/governance.rs

@@ -0,0 +1,126 @@
+use crate::{
+    actors::proposal_manager::{Error as ProposalError, ProposalKind, VoteOutcome},
+    peers::operator::{
+        OperatorSession,
+        session::handlers::{HandleCastVote, HandleCreateProposal, HandleQueryPending},
+    },
+};
+use arbiter_proto::proto::operator::{
+    governance::{
+        self as proto_gov, CreateProposalRequest, QueryPendingRequest, QueryPendingResponse,
+        VoteOutcome as ProtoVoteOutcome, create_proposal_request::Kind as ProtoKind,
+        request::Payload as GovRequestPayload, response::Payload as GovResponsePayload,
+    },
+    operator_response::Payload as OperatorResponsePayload,
+};
+use kameo::actor::ActorRef;
+use tonic::Status;
+use tracing::warn;
+
+const fn wrap(payload: GovResponsePayload) -> OperatorResponsePayload {
+    OperatorResponsePayload::Governance(proto_gov::Response {
+        payload: Some(payload),
+    })
+}
+
+pub(super) async fn dispatch(
+    actor: &ActorRef<OperatorSession>,
+    req: proto_gov::Request,
+) -> Result<Option<OperatorResponsePayload>, Status> {
+    let Some(payload) = req.payload else {
+        return Err(Status::invalid_argument(
+            "Missing governance request payload",
+        ));
+    };
+
+    match payload {
+        GovRequestPayload::Create(req) => handle_create(actor, req).await,
+        GovRequestPayload::Vote(req) => handle_vote(actor, req).await,
+        GovRequestPayload::Query(QueryPendingRequest {}) => handle_query(actor).await,
+    }
+}
+
+async fn handle_create(
+    actor: &ActorRef<OperatorSession>,
+    req: CreateProposalRequest,
+) -> Result<Option<OperatorResponsePayload>, Status> {
+    let kind = match req.kind {
+        Some(ProtoKind::ApproveSdkClient(p)) => ProposalKind::ApproveSdkClient {
+            client_id: p.client_id,
+        },
+        None => return Err(Status::invalid_argument("Missing proposal kind")),
+    };
+    let ttl_secs = req.ttl_secs.map(i64::from);
+
+    let proposal_id = actor
+        .ask(HandleCreateProposal { kind, ttl_secs })
+        .await
+        .map_err(|e| {
+            warn!(?e, "create_proposal failed");
+            Status::internal("Failed to create proposal")
+        })?;
+
+    Ok(Some(wrap(GovResponsePayload::Created(
+        proto_gov::CreateProposalResponse { proposal_id },
+    ))))
+}
+
+async fn handle_vote(
+    actor: &ActorRef<OperatorSession>,
+    req: proto_gov::CastVoteRequest,
+) -> Result<Option<OperatorResponsePayload>, Status> {
+    let result = actor
+        .ask(HandleCastVote {
+            proposal_id: req.proposal_id,
+            approve: req.approve,
+            signature: req.signature,
+        })
+        .await;
+
+    let outcome = match result {
+        Ok(VoteOutcome::Pending) => ProtoVoteOutcome::Pending,
+        Ok(VoteOutcome::QuorumApproved) => ProtoVoteOutcome::Approved,
+        Ok(VoteOutcome::QuorumRejected) => ProtoVoteOutcome::Rejected,
+        Err(kameo::error::SendError::HandlerError(ProposalError::AlreadyVoted)) => {
+            return Err(Status::invalid_argument("Already voted on this proposal"));
+        }
+        Err(kameo::error::SendError::HandlerError(ProposalError::InvalidSignature)) => {
+            return Err(Status::invalid_argument("Invalid vote signature"));
+        }
+        Err(kameo::error::SendError::HandlerError(ProposalError::ProposalNotFound)) => {
+            return Err(Status::not_found("Proposal not found"));
+        }
+        Err(e) => {
+            warn!(?e, "cast_vote failed");
+            return Err(Status::internal("Failed to cast vote"));
+        }
+    };
+
+    Ok(Some(wrap(GovResponsePayload::Voted(
+        proto_gov::VoteResponse {
+            outcome: outcome.into(),
+        },
+    ))))
+}
+
+async fn handle_query(
+    actor: &ActorRef<OperatorSession>,
+) -> Result<Option<OperatorResponsePayload>, Status> {
+    let summaries = actor.ask(HandleQueryPending {}).await.unwrap_or_default();
+
+    let proposals = summaries
+        .into_iter()
+        .map(|s| proto_gov::ProposalSummary {
+            id: s.id,
+            kind: s.kind,
+            initiator_id: s.initiator_id,
+            expires_at: s.expires_at.0.timestamp(),
+            approve_count: s.approve_count,
+            reject_count: s.reject_count,
+        })
+        .collect();
+
+    Ok(Some(wrap(GovResponsePayload::Pending(
+        QueryPendingResponse { proposals },
+    ))))
+}

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

@@ -86,7 +86,6 @@ impl TryConvert for ProtoSharedSettings {
                 .valid_until
                 .map(ProtoTimestamp::try_convert)
                 .transpose()?,
-            revoked_at: None,
             max_gas_fee_per_gas: self
                 .max_gas_fee_per_gas
                 .as_deref()

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

@@ -3,7 +3,6 @@ use crate::{
     peers::operator::{OperatorSession, session::handlers::HandleQueryVaultState},
 };
 use arbiter_proto::{
-    proto::shared::VaultState as ProtoVaultState,
     proto::operator::{
         operator_response::Payload as OperatorResponsePayload,
         vault::{
@@ -11,6 +10,7 @@ use arbiter_proto::{
             response::Payload as VaultResponsePayload,
         },
     },
+    proto::shared::VaultState as ProtoVaultState,
 };
 
 use kameo::actor::ActorRef;

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

@@ -1,14 +1,16 @@
 use crate::{
     grpc::{Convert, TryConvert},
     peers::operator::vault_gate::{
-        self as vault_gate, HandleBootstrapEncryptedKey, HandleHandshake, HandleUnsealEncryptedKey,
+        self as vault_gate, HandleBootstrapEncryptedKey, HandleContributeBootstrapPassphrase,
+        HandleContributeUnsealPassphrase, HandleDeclareCommittee, HandleHandshake,
+        HandleUnsealEncryptedKey,
     },
 };
 use arbiter_proto::proto::operator::{
     operator_request::Payload as OperatorRequestPayload,
     vault::{
         self as proto_vault,
-        bootstrap::{self as proto_bootstrap},
+        bootstrap::{self as proto_bootstrap, request::Payload as BootstrapRequestPayload},
         request::Payload as VaultRequestPayload,
         unseal::{self as proto_unseal, request::Payload as UnsealRequestPayload},
     },
@@ -73,6 +75,13 @@ impl TryConvert for UnsealRequestPayload {
         match self {
             Self::Start(start) => start.try_convert(),
             Self::EncryptedKey(key) => Ok(key.convert()),
+            Self::ContributePassphrase(cp) => Ok(
+                vault_gate::Inbound::HandleContributeUnsealPassphrase(
+                    HandleContributeUnsealPassphrase {
+                        passphrase: cp.passphrase,
+                    },
+                ),
+            ),
         }
     }
 }
@@ -107,12 +116,35 @@ impl TryConvert for proto_bootstrap::Request {
     type Error = Status;
 
     fn try_convert(self) -> Result<vault_gate::Inbound, Status> {
-        self.encrypted_key
+        self.payload
-            .ok_or_else(|| Status::invalid_argument("Missing bootstrap encrypted key"))?
+            .ok_or_else(|| Status::invalid_argument("Missing bootstrap payload"))?
             .try_convert()
     }
 }
 
+impl TryConvert for BootstrapRequestPayload {
+    type Output = vault_gate::Inbound;
+    type Error = Status;
+
+    fn try_convert(self) -> Result<vault_gate::Inbound, Status> {
+        match self {
+            Self::EncryptedKey(key) => key.try_convert(),
+            Self::DeclareCommittee(dc) => Ok(
+                vault_gate::Inbound::HandleDeclareCommittee(HandleDeclareCommittee {
+                    count: dc.count as usize,
+                }),
+            ),
+            Self::ContributePassphrase(cp) => Ok(
+                vault_gate::Inbound::HandleContributeBootstrapPassphrase(
+                    HandleContributeBootstrapPassphrase {
+                        passphrase: cp.passphrase,
+                    },
+                ),
+            ),
+        }
+    }
+}
+
 impl TryConvert for proto_bootstrap::BootstrapEncryptedKey {
     type Output = vault_gate::Inbound;
     type Error = Status;

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

@@ -4,7 +4,6 @@ use crate::{
     peers::operator::vault_gate::{self as vault_gate},
 };
 use arbiter_proto::proto::{
-    shared::VaultState as ProtoVaultState,
     operator::{
         operator_response::Payload as OperatorResponsePayload,
         vault::{
@@ -17,6 +16,7 @@ use arbiter_proto::proto::{
             },
         },
     },
+    shared::VaultState as ProtoVaultState,
 };
 
 use tonic::Status;
@@ -87,7 +87,6 @@ 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"));
@@ -111,6 +110,40 @@ impl TryConvert for vault_gate::Outbound {
                 };
                 Ok(wrap_bootstrap_response(proto_result))
             }
+            Self::HandleDeclareCommittee(result) => {
+                let proto_result = match result {
+                    Ok(()) => ProtoBootstrapResult::Success,
+                    Err(err) => {
+                        warn!(?err, "declare committee failed");
+                        return Err(Status::internal("Failed to declare committee"));
+                    }
+                };
+                Ok(wrap_bootstrap_response(proto_result))
+            }
+            Self::HandleContributeBootstrapPassphrase(result) => {
+                let proto_result = match result {
+                    Ok(true) => ProtoBootstrapResult::Success,
+                    Ok(false) => ProtoBootstrapResult::AwaitingContributions,
+                    Err(err) => {
+                        warn!(?err, "contribute bootstrap passphrase failed");
+                        return Err(Status::internal("Failed to contribute bootstrap passphrase"));
+                    }
+                };
+                Ok(wrap_bootstrap_response(proto_result))
+            }
+            Self::HandleContributeUnsealPassphrase(result) => {
+                let proto_result = match result {
+                    Ok(true) => ProtoUnsealResult::Success,
+                    Ok(false) => ProtoUnsealResult::AwaitingContributions,
+                    Err(err) => {
+                        warn!(?err, "contribute unseal passphrase failed");
+                        return Err(Status::internal("Failed to contribute unseal passphrase"));
+                    }
+                };
+                Ok(wrap_unseal_response(UnsealResponsePayload::Result(
+                    proto_result.into(),
+                )))
+            }
         }
     }
 }

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

@@ -8,7 +8,7 @@ use crate::{
     crypto::integrity::{self, AttestationStatus},
     db::{
         self,
-        models::ProgramClientMetadata,
+        models::{ProgramClientMetadata, SqliteTimestamp},
         schema::program_client,
     },
 };
@@ -18,13 +18,14 @@ use arbiter_proto::{
     transport::{Bi, expect_message},
 };
 
+use chrono::Utc;
 use diesel::{
     ExpressionMethods as _, OptionalExtension as _, QueryDsl as _, SelectableHelper as _,
-    dsl::insert_into,
+    dsl::insert_into, update,
 };
 use diesel_async::RunQueryDsl as _;
 use kameo::{actor::ActorRef, error::SendError};
-use tracing::{error, warn};
+use tracing::error;
 
 #[derive(thiserror::Error, Debug, Clone, PartialEq, Eq)]
 pub enum Error {
@@ -210,47 +211,71 @@ async fn insert_client(
     .await
 }
 
-/// Compares stored metadata against what a reconnecting client presents.
+async fn sync_client_metadata(
-/// 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,
-    presented: &ClientMetadata,
+    metadata: &ClientMetadata,
 ) -> Result<(), Error> {
-    use crate::db::schema::client_metadata;
+    use crate::db::schema::{client_metadata, client_metadata_history};
+
+    let now = SqliteTimestamp(Utc::now());
 
     let mut conn = db.get().await.map_err(|e| {
         error!(error = ?e, "Database pool error");
         Error::DatabasePoolUnavailable
     })?;
 
-    let current: ProgramClientMetadata = program_client::table
+    conn.exclusive_transaction(async |conn| {
-        .find(client_id)
+        let (current_metadata_id, current): (i32, ProgramClientMetadata) = program_client::table
-        .inner_join(client_metadata::table)
+            .find(client_id)
-        .select(ProgramClientMetadata::as_select())
+            .inner_join(client_metadata::table)
-        .first(&mut conn)
+            .select((
-        .await
+                program_client::metadata_id,
-        .map_err(|e| {
+                ProgramClientMetadata::as_select(),
-            error!(error = ?e, "Database error");
+            ))
-            Error::DatabaseOperationFailed
+            .first(&mut *conn)
-        })?;
+            .await?;
 
-    let changed = current.name != presented.name
+        let unchanged = current.name == metadata.name
-        || current.description != presented.description
+            && current.description == metadata.description
-        || current.version != presented.version;
+            && current.version == metadata.version;
+        if unchanged {
+            return Ok(());
+        }
 
-    if changed {
+        insert_into(client_metadata_history::table)
-        warn!(
+            .values((
-            client_id,
+                client_metadata_history::metadata_id.eq(current_metadata_id),
-            stored_name = %current.name,
+                client_metadata_history::client_id.eq(client_id),
-            presented_name = %presented.name,
+            ))
-            "reconnecting client presented different metadata; ignoring - metadata is frozen after operator approval"
+            .execute(&mut *conn)
-        );
+            .await?;
-    }
 
-    Ok(())
+        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
+    })
 }
 
 async fn challenge_client<T>(
@@ -299,7 +324,6 @@ 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(
@@ -313,6 +337,8 @@ 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/session.rs

@@ -83,7 +83,7 @@ impl Actor for ClientSession {
         args.props
             .actors
             .flow_coordinator
-            .ask(RegisterClient { client_id: args.client_id, actor: this })
+            .ask(RegisterClient { 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<Vec<u8>>,
+        bootstrap_token: Option<String>,
     },
     AuthChallengeSolution {
         signature: Vec<u8>,

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

@@ -14,18 +14,19 @@ use diesel::{ExpressionMethods as _, OptionalExtension as _, QueryDsl};
 use diesel_async::RunQueryDsl;
 use tracing::error;
 
-pub(super) struct ChallengeRequest {
+pub(crate) struct ChallengeRequest {
-    pub(super) pubkey: authn::PublicKey,
+    pub(crate) pubkey: authn::PublicKey,
-    pub(super) bootstrap_token: Option<Vec<u8>>,
+    pub(crate) bootstrap_token: Option<String>,
 }
 
 pub struct ChallengeContext {
-    pub(super) challenge: AuthChallenge,
+    pub challenge: AuthChallenge,
-    pub(super) pubkey: authn::PublicKey,
+    pub pubkey: authn::PublicKey,
+    pub bootstrap_token: Option<String>,
 }
 
-pub(super) struct ChallengeSolution {
+pub(crate) struct ChallengeSolution {
-    pub(super) solution: Vec<u8>,
+    pub(crate) solution: Vec<u8>,
 }
 
 smlang::statemachine!(
@@ -78,16 +79,11 @@ 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 {
+        Self { conn, transport }
-            conn,
-            transport,
-            bootstrap_token: None,
-        }
     }
 }
 
@@ -112,8 +108,6 @@ where
             }
         }
 
-        self.bootstrap_token = bootstrap_token;
-
         let challenge = AuthChallenge::generate(&mut rand::rng());
 
         self.transport
@@ -126,12 +120,20 @@ where
                 Error::Transport
             })?;
 
-        Ok(ChallengeContext { challenge, pubkey })
+        Ok(ChallengeContext {
+            challenge,
+            pubkey,
+            bootstrap_token,
+        })
     }
 
     async fn verify_solution(
         &mut self,
-        ChallengeContext { challenge, pubkey }: &ChallengeContext,
+        ChallengeContext {
+            challenge,
+            pubkey,
+            bootstrap_token,
+        }: &ChallengeContext,
         ChallengeSolution { solution }: ChallengeSolution,
     ) -> Result<Credentials, Self::Error> {
         let signature = authn::Signature::try_from(solution.as_slice()).map_err(|()| {
@@ -150,13 +152,15 @@ where
         }
 
         // Resolve client id: bootstrap (consume token + register) or lookup
-        let id = match self.bootstrap_token.take() {
+        let id = match bootstrap_token {
             Some(token) => {
                 let token_ok: bool = self
                     .conn
                     .actors
                     .bootstrapper
-                    .ask(ConsumeToken { token })
+                    .ask(ConsumeToken {
+                        token: token.clone(),
+                    })
                     .await
                     .map_err(|e| {
                         error!(?e, "Failed to consume bootstrap token");

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

@@ -180,6 +180,7 @@ where
 
     Ok(OperatorSession::spawn(OperatorSession::new(
         props.clone(),
+        creds.clone(),
         oob_sender,
     )))
 }

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

@@ -2,17 +2,14 @@ use super::{Error, OperatorSession};
 use crate::{
     actors::{
         evm::{
-            ClientSignTransaction, Generate, ListWallets, OperatorCreateGrant, OperatorListGrants,
+            ClientSignTransaction, Generate, ListWallets, OperatorCreateGrant, OperatorDeleteGrant,
-            SignTransactionError as EvmSignError,
+            OperatorListGrants, SignTransactionError as EvmSignError,
         },
-        flow_coordinator::{IsClientConnected, client_connect_approval::ClientApprovalAnswer},
+        flow_coordinator::client_connect_approval::ClientApprovalAnswer,
         vault::VaultState,
     },
-    db::{
+    db::models::{
-        models::{
+        EvmWalletAccess, EvmWalletId, NewEvmWalletAccess, ProgramClient, ProgramClientMetadata,
-            EvmWalletAccess, EvmWalletId, NewEvmWalletAccess, ProgramClient, ProgramClientMetadata,
-        },
-        schema::program_client,
     },
     evm::policies::{Grant, SpecificGrant},
 };
@@ -22,16 +19,13 @@ 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, info, warn};
+use tracing::error;
 
 #[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,
 }
@@ -128,22 +122,23 @@ impl OperatorSession {
     }
 
     #[message]
-    pub(crate) fn handle_grant_delete(&mut self, grant_id: i32) -> Result<(), GrantMutationError> {
+    pub(crate) async fn handle_grant_delete(
-        // match self
+        &mut self,
-        //     .props
+        grant_id: i32,
-        //     .actors
+    ) -> Result<(), GrantMutationError> {
-        //     .evm
+        match self
-        //     .ask(OperatorDeleteGrant { grant_id })
+            .props
-        //     .await
+            .actors
-        // {
+            .evm
-        //     Ok(()) => Ok(()),
+            .ask(OperatorDeleteGrant { grant_id })
-        //     Err(err) => {
+            .await
-        //         error!(?err, "EVM grant delete failed");
+        {
-        //         Err(GrantMutationError::Internal)
+            Ok(()) => Ok(()),
-        //     }
+            Err(err) => {
-        // }
+                error!(?err, "EVM grant delete failed");
-        let _ = grant_id;
+                Err(GrantMutationError::Internal)
-        todo!()
+            }
+        }
     }
 
     #[message]
@@ -153,30 +148,6 @@ 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
@@ -232,7 +203,7 @@ impl OperatorSession {
             use crate::db::schema::evm_wallet_access;
             for entry in entries {
                 diesel::delete(evm_wallet_access::table)
-                    .filter(evm_wallet_access::id.eq(entry))
+                    .filter(evm_wallet_access::wallet_id.eq(entry))
                     .execute(&mut *conn)
                     .await?;
             }
@@ -247,8 +218,9 @@ impl OperatorSession {
     pub(crate) async fn handle_list_wallet_access(
         &mut self,
     ) -> Result<Vec<EvmWalletAccess>, Error> {
+        use crate::db::schema::evm_wallet_access;
         let mut conn = self.props.db.get().await?;
-        let access_entries = crate::db::schema::evm_wallet_access::table
+        let access_entries = evm_wallet_access::table
             .select(EvmWalletAccess::as_select())
             .load::<_>(&mut conn)
             .await?;
@@ -285,30 +257,6 @@ 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(())
     }
 
@@ -332,141 +280,58 @@ impl OperatorSession {
     }
 }
 
-#[cfg(test)]
+#[messages]
-mod tests {
+impl OperatorSession {
-    use crate::db::{self, models::{EvmWalletId, NewEvmWalletAccess}, schema::evm_wallet_access};
+    #[message]
-    use diesel::{ExpressionMethods as _, QueryDsl as _, SelectableHelper};
+    pub(crate) async fn handle_create_proposal(
-    use diesel_async::{AsyncConnection, RunQueryDsl};
+        &mut self,
-
+        kind: crate::actors::proposal_manager::ProposalKind,
-    /// Regression test: revocation must delete by access-entry `id`, not by `wallet_id`.
+        ttl_secs: Option<i64>,
-    ///
+    ) -> Result<i32, Error> {
-    /// Before the fix, revoking `entry_id=1` would delete all rows where `wallet_id=1`,
+        use crate::actors::proposal_manager::CreateProposal;
-    /// wiping out every client's access to wallet #1.
+        let initiator_id = self.credentials.id;
-    #[tokio::test]
+        self.props
-    async fn revoke_deletes_by_entry_id_not_wallet_id() {
+            .actors
-        use crate::db::models::EvmWalletAccess;
+            .proposal_manager
-
+            .ask(CreateProposal { kind, initiator_id, ttl_secs })
-        let pool = db::create_test_pool().await;
+            .await
-        let mut conn = pool.get().await.expect("pool connection");
+            .map_err(|e| {
-
+                error!(?e, "create_proposal failed");
-        // Insert two access entries for the same wallet but different clients.
+                Error::internal("Failed to create proposal")
-        // 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.
+    #[message]
-    ///
+    pub(crate) async fn handle_cast_vote(
-    /// This specifically catches the case where `entry.id=5` and `wallet_id=1` are different values;
+        &mut self,
-    /// the old bug would delete by `wallet_id`, potentially matching a completely different entry.
+        proposal_id: i32,
-    #[tokio::test]
+        approve: bool,
-    async fn revoke_with_mismatched_wallet_and_entry_ids() {
+        signature: Vec<u8>,
-        use crate::db::models::EvmWalletAccess;
+    ) -> Result<crate::actors::proposal_manager::VoteOutcome, crate::actors::proposal_manager::Error> {
-
+        use crate::actors::proposal_manager::CastVote;
-        let pool = db::create_test_pool().await;
+        let operator_id = self.credentials.id;
-        let mut conn = pool.get().await.expect("pool connection");
+        self.props
-
+            .actors
-        // Insert entries to force auto-increment IDs to diverge from wallet_ids.
+            .proposal_manager
-        // We'll insert 5 placeholder entries first so that the real entry gets id=6.
+            .ask(CastVote { proposal_id, operator_id, approve, signature })
-        for i in 1_i32..=5 {
+            .await
-            diesel::insert_into(evm_wallet_access::table)
+            .map_err(|err| match err {
-                .values(NewEvmWalletAccess {
+                SendError::HandlerError(e) => e,
-                    wallet_id: EvmWalletId::from_raw(99),
+                _ => crate::actors::proposal_manager::Error::ExecutionFailed("actor unavailable".to_owned()),
-                    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)
+
+    #[message]
+    pub(crate) async fn handle_query_pending(
+        &mut self,
+    ) -> Vec<crate::actors::proposal_manager::ProposalSummary> {
+        use crate::actors::proposal_manager::QueryPending;
+        let operator_id = self.credentials.id;
+        self.props
+            .actors
+            .proposal_manager
+            .ask(QueryPending { operator_id })
             .await
-            .expect("insert target");
+            .unwrap_or_default()
-
-        // 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

@@ -1,14 +1,16 @@
-use super::{OutOfBand, OperatorConnection};
+use super::{Credentials, OutOfBand, OperatorConnection};
 use crate::{
     actors::{
-        flow_coordinator::{GetConnectedClientIds, client_connect_approval::{ClientApprovalAnswer, ClientApprovalController}}, operator_registry::ConnectOperator,
+        flow_coordinator::client_connect_approval::ClientApprovalController,
-    }, peers::client::ClientProfile,
+        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, HashSet}};
+use std::{borrow::Cow, collections::HashMap};
 use thiserror::Error;
 use tracing::error;
 
@@ -49,24 +51,21 @@ pub struct PendingClientApproval {
 
 pub struct OperatorSession {
     props: OperatorConnection,
+    credentials: Credentials,
     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;
 
 impl OperatorSession {
-    pub(crate) fn new(props: OperatorConnection, sender: Box<dyn Sender<OutOfBand>>) -> Self {
+    pub(crate) fn new(props: OperatorConnection, credentials: Credentials, sender: Box<dyn Sender<OutOfBand>>) -> Self {
         Self {
             props,
+            credentials,
             sender,
             pending_client_approvals: HashMap::default(),
-            approved_client_ids: HashSet::default(),
         }
     }
 }
@@ -91,7 +90,6 @@ impl OperatorSession {
                 actor = "operator",
                 event = "failed to announce new client connection"
             );
-            let _ = controller.tell(ClientApprovalAnswer { approved: false }).await;
             return;
         }
 
@@ -110,7 +108,7 @@ impl Actor for OperatorSession {
 
     type Error = Error;
 
-    async fn on_start(mut args: Self::Args, this: ActorRef<Self>) -> Result<Self, Self::Error> {
+    async fn on_start(args: Self::Args, this: ActorRef<Self>) -> Result<Self, Self::Error> {
         args.props
             .actors
             .operator_registry
@@ -125,16 +123,6 @@ 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

@@ -3,8 +3,9 @@ use crate::{
     actors::{
         GlobalActors,
         vault::{self, Bootstrap, GetState, TryUnseal, VaultState, events},
+        vault_coordinator::{ContributeBootstrap, ContributeUnseal, StartBootstrap},
     },
-    crypto::integrity::{self},
+    crypto::{KeyCell, integrity::{self}},
     db::DatabasePool,
 };
 use arbiter_crypto::safecell::{SafeCell, SafeCellHandle as _};
@@ -17,6 +18,9 @@ use tokio::sync::oneshot;
 use tracing::{error, info};
 use x25519_dalek::{EphemeralSecret, PublicKey, SharedSecret};
 
+pub use VaultGateMessage as Inbound;
+pub use VaultGateMessageReply as Outbound;
+
 pub mod state;
 
 #[derive(Debug, thiserror::Error)]
@@ -25,8 +29,6 @@ pub enum Error {
     AlreadyBootstrapped,
     #[error("Invalid key provided")]
     InvalidKey,
-    #[error("Vault locked: too many failed unseal attempts")]
-    LockedOut,
 
     #[error("State transition failed")]
     State,
@@ -100,11 +102,9 @@ impl VaultGate {
         nonce: &[u8],
         ciphertext: &[u8],
         associated_data: &[u8],
-    ) -> Result<SafeCell<Vec<u8>>, ()> {
+    ) -> Result<KeyCell, ()> {
         let nonce = XNonce::from_slice(nonce);
-
         let cipher = XChaCha20Poly1305::new(secret.as_bytes().into());
-
         let mut key_buffer = SafeCell::new(ciphertext.to_vec());
 
         let decryption_result = key_buffer.write_inline(|write_handle| {
@@ -112,7 +112,9 @@ impl VaultGate {
         });
 
         match decryption_result {
-            Ok(()) => Ok(key_buffer),
+            Ok(()) => KeyCell::try_from(key_buffer).map_err(|()| {
+                error!("Decrypted key material has unexpected length");
+            }),
             Err(err) => {
                 error!(?err, "Failed to decrypt encrypted key material");
                 Err(())
@@ -121,7 +123,7 @@ impl VaultGate {
     }
 }
 
-#[messages(messages = Inbound, replies = Outbound)]
+#[messages(enum)]
 impl VaultGate {
     #[message]
     pub fn handle_handshake(
@@ -154,17 +156,14 @@ impl VaultGate {
             return Err(Error::State);
         };
 
-        let Ok(seal_key_buffer) = Self::decrypt_key(secret, &nonce, &ciphertext, &associated_data)
+        let Ok(seal_key) = Self::decrypt_key(secret, &nonce, &ciphertext, &associated_data) else {
-        else {
             return Err(Error::InvalidKey);
         };
 
         match self
             .actors
             .vault
-            .ask(TryUnseal {
+            .ask(TryUnseal { seal_key })
-                seal_key_raw: seal_key_buffer,
-            })
             .await
         {
             Ok(()) => {
@@ -172,7 +171,6 @@ 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)
@@ -195,17 +193,14 @@ impl VaultGate {
             return Err(Error::State);
         };
 
-        let Ok(seal_key_buffer) = Self::decrypt_key(secret, &nonce, &ciphertext, &associated_data)
+        let Ok(seal_key) = Self::decrypt_key(secret, &nonce, &ciphertext, &associated_data) else {
-        else {
             return Err(Error::InvalidKey);
         };
 
         match self
             .actors
             .vault
-            .ask(Bootstrap {
+            .ask(Bootstrap { seal_key })
-                seal_key_raw: seal_key_buffer,
-            })
             .await
         {
             Ok(()) => {
@@ -237,6 +232,50 @@ impl VaultGate {
 
         Ok(answer)
     }
+
+    #[message]
+    pub async fn handle_declare_committee(&mut self, count: usize) -> Result<(), Error> {
+        self.actors
+            .vault_coordinator
+            .ask(StartBootstrap {
+                operator_id: self.auth_creds.id,
+                declared_count: count,
+            })
+            .await
+            .map_err(|_| Error::internal("VaultCoordinator unavailable"))
+    }
+
+    #[message]
+    pub async fn handle_contribute_bootstrap_passphrase(
+        &mut self,
+        passphrase: Vec<u8>,
+    ) -> Result<bool, Error> {
+        let passphrase_cell = SafeCell::new(passphrase);
+        self.actors
+            .vault_coordinator
+            .ask(ContributeBootstrap {
+                operator_id: self.auth_creds.id,
+                passphrase: passphrase_cell,
+            })
+            .await
+            .map_err(|_| Error::internal("VaultCoordinator unavailable"))
+    }
+
+    #[message]
+    pub async fn handle_contribute_unseal_passphrase(
+        &mut self,
+        passphrase: Vec<u8>,
+    ) -> Result<bool, Error> {
+        let passphrase_cell = SafeCell::new(passphrase);
+        self.actors
+            .vault_coordinator
+            .ask(ContributeUnseal {
+                operator_id: self.auth_creds.id,
+                passphrase: passphrase_cell,
+            })
+            .await
+            .map_err(|_| Error::internal("VaultCoordinator unavailable"))
+    }
 }
 
 impl Message<events::Bootstrapped> for VaultGate {

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

@@ -1,8 +1,5 @@
 use super::common::ChannelTransport;
-use arbiter_crypto::{
+use arbiter_crypto::authn::{self, AuthChallenge, CLIENT_CONTEXT};
-    authn::{self, AuthChallenge, CLIENT_CONTEXT},
-    safecell::{SafeCell, SafeCellHandle as _},
-};
 use arbiter_proto::{
     ClientMetadata,
     transport::{Receiver, Sender},
@@ -100,7 +97,7 @@ async fn spawn_test_actors(db: &db::DatabasePool) -> GlobalActors {
     actors
         .vault
         .ask(Bootstrap {
-            seal_key_raw: SafeCell::new(b"test-seal-key".to_vec()),
+            seal_key: arbiter_server::crypto::KeyCell::from([0u8; 32]),
         })
         .await
         .unwrap();
@@ -266,7 +263,7 @@ pub async fn metadata_unchanged_does_not_append_history() {
 
 #[tokio::test]
 #[test_log::test]
-pub async fn metadata_frozen_after_approval_ignores_reconnect_changes() {
+pub async fn metadata_change_appends_history_and_repoints_binding() {
     let db = db::create_test_pool().await;
     let actors = spawn_test_actors(&db).await;
     let new_key = MlDsa87::key_gen(&mut rand::rng());
@@ -287,7 +284,6 @@ pub async fn metadata_frozen_after_approval_ignores_reconnect_changes() {
         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(),
@@ -314,7 +310,6 @@ pub async fn metadata_frozen_after_approval_ignores_reconnect_changes() {
             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)
@@ -340,16 +335,15 @@ pub async fn metadata_frozen_after_approval_ignores_reconnect_changes() {
             .first::<(String, Option<String>, Option<String>)>(&mut conn)
             .await
             .unwrap();
-        assert_eq!(metadata_count, 1, "frozen: no new metadata row on reconnect");
+        assert_eq!(metadata_count, 2);
-        assert_eq!(history_count, 0, "frozen: no history entry on reconnect");
+        assert_eq!(history_count, 1);
         assert_eq!(
             current,
             (
                 "client".to_owned(),
-                Some("old".to_owned()),
+                Some("new".to_owned()),
-                Some("1.0.0".to_owned())
+                Some("2.0.0".to_owned())
-            ),
+            )
-            "frozen: original metadata must be preserved"
         );
     }
 }

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

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

server/crates/arbiter-server/tests/governance.rs

@@ -0,0 +1,424 @@
+use arbiter_crypto::authn::{self, GOVERNANCE_CONTEXT};
+use arbiter_server::{
+    actors::{
+        GlobalActors,
+        proposal_manager::{CastVote, CreateProposal, Error as ProposalError, ExpireStale, ProposalKind, QueryPending, VoteOutcome},
+    },
+    crypto::KeyCell,
+    db,
+};
+use arbiter_server::actors::vault::Bootstrap;
+use arbiter_server::db::schema::operator_identity;
+use diesel::{ExpressionMethods, QueryDsl, insert_into};
+use diesel_async::RunQueryDsl;
+
+async fn register_operator(db: &db::DatabasePool, pubkey: &authn::PublicKey) -> i32 {
+    let mut conn = db.get().await.unwrap();
+    insert_into(operator_identity::table)
+        .values(operator_identity::public_key.eq(pubkey.to_bytes()))
+        .returning(operator_identity::id)
+        .get_result::<i32>(&mut conn)
+        .await
+        .unwrap()
+}
+
+fn make_vote_message(proposal_id: i32, approve: bool) -> Vec<u8> {
+    let mut msg = Vec::with_capacity(9);
+    msg.extend_from_slice(&(proposal_id as i64).to_be_bytes());
+    msg.push(u8::from(approve));
+    msg
+}
+
+async fn insert_unapproved_client(db: &db::DatabasePool, pubkey: &authn::PublicKey) -> i32 {
+    use arbiter_server::db::schema::{client_metadata, program_client};
+    let mut conn = db.get().await.unwrap();
+    let metadata_id: i32 = insert_into(client_metadata::table)
+        .values((
+            client_metadata::name.eq("test-client"),
+            client_metadata::description.eq(Option::<String>::None),
+            client_metadata::version.eq(Option::<String>::None),
+        ))
+        .returning(client_metadata::id)
+        .get_result(&mut conn)
+        .await
+        .unwrap();
+
+    insert_into(program_client::table)
+        .values((
+            program_client::public_key.eq(pubkey.to_bytes()),
+            program_client::metadata_id.eq(metadata_id),
+        ))
+        .returning(program_client::id)
+        .get_result(&mut conn)
+        .await
+        .unwrap()
+}
+
+#[tokio::test]
+async fn create_proposal_returns_id() {
+    let db = db::create_test_pool().await;
+    let actors = GlobalActors::spawn(db.clone()).await.unwrap();
+    actors
+        .vault
+        .ask(Bootstrap {
+            seal_key: KeyCell::from([0u8; 32]),
+        })
+        .await
+        .unwrap();
+
+    let proposal_id = actors
+        .proposal_manager
+        .ask(CreateProposal {
+            kind: ProposalKind::ApproveSdkClient { client_id: 42 },
+            initiator_id: 1,
+            ttl_secs: None,
+        })
+        .await
+        .unwrap();
+
+    assert!(proposal_id > 0);
+}
+
+#[tokio::test]
+async fn single_operator_vote_reaches_quorum() {
+    let db = db::create_test_pool().await;
+    let actors = GlobalActors::spawn(db.clone()).await.unwrap();
+    actors
+        .vault
+        .ask(Bootstrap { seal_key: KeyCell::from([0u8; 32]) })
+        .await
+        .unwrap();
+
+    let signing_key = authn::SigningKey::generate();
+    let op_id = register_operator(&db, &signing_key.public_key()).await;
+
+    let client_key = authn::SigningKey::generate();
+    let client_id = insert_unapproved_client(&db, &client_key.public_key()).await;
+
+    let proposal_id = actors
+        .proposal_manager
+        .ask(CreateProposal {
+            kind: ProposalKind::ApproveSdkClient { client_id },
+            initiator_id: op_id,
+            ttl_secs: None,
+        })
+        .await
+        .unwrap();
+
+    let msg = make_vote_message(proposal_id, true);
+    let sig = signing_key.sign_message(&msg, GOVERNANCE_CONTEXT).unwrap();
+
+    let outcome = actors
+        .proposal_manager
+        .ask(CastVote {
+            proposal_id,
+            operator_id: op_id,
+            approve: true,
+            signature: sig.to_bytes(),
+        })
+        .await
+        .unwrap();
+
+    assert_eq!(outcome, VoteOutcome::QuorumApproved);
+}
+
+#[tokio::test]
+async fn two_operator_first_vote_is_pending() {
+    let db = db::create_test_pool().await;
+    let actors = GlobalActors::spawn(db.clone()).await.unwrap();
+    actors
+        .vault
+        .ask(Bootstrap { seal_key: KeyCell::from([0u8; 32]) })
+        .await
+        .unwrap();
+
+    let key1 = authn::SigningKey::generate();
+    let key2 = authn::SigningKey::generate();
+    let op1 = register_operator(&db, &key1.public_key()).await;
+    let _op2 = register_operator(&db, &key2.public_key()).await;
+    let client_key = authn::SigningKey::generate();
+    let client_id = insert_unapproved_client(&db, &client_key.public_key()).await;
+
+    let proposal_id = actors
+        .proposal_manager
+        .ask(CreateProposal {
+            kind: ProposalKind::ApproveSdkClient { client_id },
+            initiator_id: op1,
+            ttl_secs: None,
+        })
+        .await
+        .unwrap();
+
+    let msg = make_vote_message(proposal_id, true);
+    let sig = key1.sign_message(&msg, GOVERNANCE_CONTEXT).unwrap();
+
+    let outcome = actors
+        .proposal_manager
+        .ask(CastVote {
+            proposal_id,
+            operator_id: op1,
+            approve: true,
+            signature: sig.to_bytes(),
+        })
+        .await
+        .unwrap();
+
+    assert_eq!(outcome, VoteOutcome::Pending);
+}
+
+#[tokio::test]
+async fn duplicate_vote_rejected() {
+    let db = db::create_test_pool().await;
+    let actors = GlobalActors::spawn(db.clone()).await.unwrap();
+    actors
+        .vault
+        .ask(Bootstrap { seal_key: KeyCell::from([0u8; 32]) })
+        .await
+        .unwrap();
+
+    let key = authn::SigningKey::generate();
+    let op = register_operator(&db, &key.public_key()).await;
+
+    let client_key = authn::SigningKey::generate();
+    let client_id = insert_unapproved_client(&db, &client_key.public_key()).await;
+
+    let proposal_id = actors
+        .proposal_manager
+        .ask(CreateProposal {
+            kind: ProposalKind::ApproveSdkClient { client_id },
+            initiator_id: op,
+            ttl_secs: None,
+        })
+        .await
+        .unwrap();
+
+    let msg = make_vote_message(proposal_id, true);
+    let sig = key.sign_message(&msg, GOVERNANCE_CONTEXT).unwrap();
+    actors
+        .proposal_manager
+        .ask(CastVote {
+            proposal_id,
+            operator_id: op,
+            approve: true,
+            signature: sig.to_bytes(),
+        })
+        .await
+        .unwrap();
+
+    // Second vote same operator
+    let sig2 = key.sign_message(&msg, GOVERNANCE_CONTEXT).unwrap();
+    let result = actors
+        .proposal_manager
+        .ask(CastVote {
+            proposal_id,
+            operator_id: op,
+            approve: true,
+            signature: sig2.to_bytes(),
+        })
+        .await;
+
+    assert!(matches!(
+        result,
+        Err(kameo::error::SendError::HandlerError(ProposalError::AlreadyVoted))
+    ));
+}
+
+#[tokio::test]
+async fn invalid_signature_rejected() {
+    let db = db::create_test_pool().await;
+    let actors = GlobalActors::spawn(db.clone()).await.unwrap();
+    actors
+        .vault
+        .ask(Bootstrap { seal_key: KeyCell::from([0u8; 32]) })
+        .await
+        .unwrap();
+
+    let key = authn::SigningKey::generate();
+    let op = register_operator(&db, &key.public_key()).await;
+    let client_key = authn::SigningKey::generate();
+    let client_id = insert_unapproved_client(&db, &client_key.public_key()).await;
+
+    let proposal_id = actors
+        .proposal_manager
+        .ask(CreateProposal {
+            kind: ProposalKind::ApproveSdkClient { client_id },
+            initiator_id: op,
+            ttl_secs: None,
+        })
+        .await
+        .unwrap();
+
+    let result = actors
+        .proposal_manager
+        .ask(CastVote {
+            proposal_id,
+            operator_id: op,
+            approve: true,
+            signature: vec![0u8; 32], // garbage
+        })
+        .await;
+
+    assert!(matches!(
+        result,
+        Err(kameo::error::SendError::HandlerError(ProposalError::InvalidSignature))
+    ));
+}
+
+#[tokio::test]
+async fn query_pending_excludes_already_voted() {
+    let db = db::create_test_pool().await;
+    let actors = GlobalActors::spawn(db.clone()).await.unwrap();
+    actors
+        .vault
+        .ask(Bootstrap { seal_key: KeyCell::from([0u8; 32]) })
+        .await
+        .unwrap();
+
+    let signing_key = authn::SigningKey::generate();
+    let op = register_operator(&db, &signing_key.public_key()).await;
+
+    let client_key1 = authn::SigningKey::generate();
+    let client_id1 = insert_unapproved_client(&db, &client_key1.public_key()).await;
+    let client_key2 = authn::SigningKey::generate();
+    let client_id2 = insert_unapproved_client(&db, &client_key2.public_key()).await;
+
+    let p1 = actors
+        .proposal_manager
+        .ask(CreateProposal {
+            kind: ProposalKind::ApproveSdkClient { client_id: client_id1 },
+            initiator_id: op,
+            ttl_secs: None,
+        })
+        .await
+        .unwrap();
+
+    let p2 = actors
+        .proposal_manager
+        .ask(CreateProposal {
+            kind: ProposalKind::ApproveSdkClient { client_id: client_id2 },
+            initiator_id: op,
+            ttl_secs: None,
+        })
+        .await
+        .unwrap();
+
+    // Vote on p1 — with 1 operator this reaches quorum (QuorumApproved)
+    let msg = make_vote_message(p1, true);
+    let sig = signing_key.sign_message(&msg, GOVERNANCE_CONTEXT).unwrap();
+    let outcome = actors
+        .proposal_manager
+        .ask(CastVote {
+            proposal_id: p1,
+            operator_id: op,
+            approve: true,
+            signature: sig.to_bytes(),
+        })
+        .await
+        .unwrap();
+    assert_eq!(outcome, VoteOutcome::QuorumApproved);
+
+    // QueryPending should return only p2
+    let pending = actors
+        .proposal_manager
+        .ask(QueryPending { operator_id: op })
+        .await
+        .unwrap();
+
+    assert_eq!(pending.len(), 1);
+    assert_eq!(pending[0].id, p2);
+}
+
+#[tokio::test]
+async fn expire_stale_marks_old_proposals_expired() {
+    let db = db::create_test_pool().await;
+    let actors = GlobalActors::spawn(db.clone()).await.unwrap();
+    actors
+        .vault
+        .ask(Bootstrap { seal_key: KeyCell::from([0u8; 32]) })
+        .await
+        .unwrap();
+
+    let signing_key = authn::SigningKey::generate();
+    let op = register_operator(&db, &signing_key.public_key()).await;
+
+    let client_key = authn::SigningKey::generate();
+    let client_id = insert_unapproved_client(&db, &client_key.public_key()).await;
+
+    // Create proposal with ttl_secs = -1 so it's immediately expired
+    let _proposal_id = actors
+        .proposal_manager
+        .ask(CreateProposal {
+            kind: ProposalKind::ApproveSdkClient { client_id },
+            initiator_id: op,
+            ttl_secs: Some(-1),
+        })
+        .await
+        .unwrap();
+
+    let expired = actors
+        .proposal_manager
+        .ask(ExpireStale)
+        .await
+        .unwrap();
+    assert_eq!(expired, 1);
+
+    let pending = actors
+        .proposal_manager
+        .ask(QueryPending { operator_id: op })
+        .await
+        .unwrap();
+    assert!(pending.is_empty());
+}
+
+#[tokio::test]
+async fn approve_sdk_client_writes_integrity_envelope() {
+    use arbiter_server::db::schema::integrity_envelope;
+
+    let db = db::create_test_pool().await;
+    let actors = GlobalActors::spawn(db.clone()).await.unwrap();
+    actors
+        .vault
+        .ask(Bootstrap { seal_key: KeyCell::from([0u8; 32]) })
+        .await
+        .unwrap();
+
+    let client_key = authn::SigningKey::generate();
+    let client_id = insert_unapproved_client(&db, &client_key.public_key()).await;
+
+    let op_key = authn::SigningKey::generate();
+    let op_id = register_operator(&db, &op_key.public_key()).await;
+
+    let proposal_id = actors
+        .proposal_manager
+        .ask(CreateProposal {
+            kind: ProposalKind::ApproveSdkClient { client_id },
+            initiator_id: op_id,
+            ttl_secs: None,
+        })
+        .await
+        .unwrap();
+
+    let msg = make_vote_message(proposal_id, true);
+    let sig = op_key.sign_message(&msg, GOVERNANCE_CONTEXT).unwrap();
+    let outcome = actors
+        .proposal_manager
+        .ask(CastVote {
+            proposal_id,
+            operator_id: op_id,
+            approve: true,
+            signature: sig.to_bytes(),
+        })
+        .await
+        .unwrap();
+
+    assert_eq!(outcome, VoteOutcome::QuorumApproved);
+
+    let mut conn = db.get().await.unwrap();
+    let count: i64 = integrity_envelope::table
+        .filter(integrity_envelope::entity_kind.eq("client_credentials"))
+        .count()
+        .get_result(&mut conn)
+        .await
+        .unwrap();
+    assert_eq!(count, 1);
+}

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

@@ -1,8 +1,5 @@
 use super::common::ChannelTransport;
-use arbiter_crypto::{
+use arbiter_crypto::authn::{self, AuthChallenge, OPERATOR_CONTEXT};
-    authn::{self, AuthChallenge, OPERATOR_CONTEXT},
-    safecell::{SafeCell, SafeCellHandle as _},
-};
 use arbiter_proto::transport::{Error as TransportError, Receiver, Sender};
 use arbiter_server::{
     actors::{GlobalActors, bootstrap::GetToken, vault::Bootstrap},
@@ -157,7 +154,7 @@ pub async fn bootstrap_token_auth() {
     actors
         .vault
         .ask(Bootstrap {
-            seal_key_raw: SafeCell::new(b"test-seal-key".to_vec()),
+            seal_key: arbiter_server::crypto::KeyCell::from([0u8; 32]),
         })
         .await
         .unwrap();
@@ -174,7 +171,7 @@ pub async fn bootstrap_token_auth() {
     test_transport
         .send(auth::Inbound::AuthChallengeRequest {
             pubkey: verifying_key(&new_key).into(),
-            bootstrap_token: Some(token.into_bytes()),
+            bootstrap_token: Some(token),
         })
         .await
         .unwrap();
@@ -231,7 +228,7 @@ pub async fn bootstrap_invalid_token_auth() {
     test_transport
         .send(auth::Inbound::AuthChallengeRequest {
             pubkey: verifying_key(&new_key).into(),
-            bootstrap_token: Some(b"invalid_token".to_vec()),
+            bootstrap_token: Some("invalid_token".to_owned()),
         })
         .await
         .unwrap();
@@ -275,7 +272,7 @@ pub async fn challenge_auth() {
     actors
         .vault
         .ask(Bootstrap {
-            seal_key_raw: SafeCell::new(b"test-seal-key".to_vec()),
+            seal_key: arbiter_server::crypto::KeyCell::from([0u8; 32]),
         })
         .await
         .unwrap();
@@ -361,7 +358,7 @@ pub async fn challenge_auth_rejects_integrity_tag_mismatch_when_unsealed() {
     actors
         .vault
         .ask(Bootstrap {
-            seal_key_raw: SafeCell::new(b"test-seal-key".to_vec()),
+            seal_key: arbiter_server::crypto::KeyCell::from([0u8; 32]),
         })
         .await
         .unwrap();
@@ -400,7 +397,7 @@ pub async fn challenge_auth_rejects_integrity_tag_mismatch_when_unsealed() {
     let challenge = match response {
         Ok(resp) => match resp {
             auth::Outbound::AuthChallenge { challenge } => challenge,
-            other @ auth::Outbound::AuthSuccess => panic!("Expected AuthChallenge, got {other:?}"),
+            other => panic!("Expected AuthChallenge, got {other:?}"),
         },
         Err(err) => panic!("Expected Ok response, got Err({err:?})"),
     };
@@ -434,7 +431,7 @@ pub async fn challenge_auth_rejects_invalid_signature() {
     actors
         .vault
         .ask(Bootstrap {
-            seal_key_raw: SafeCell::new(b"test-seal-key".to_vec()),
+            seal_key: arbiter_server::crypto::KeyCell::from([0u8; 32]),
         })
         .await
         .unwrap();

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

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

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

@@ -14,8 +14,6 @@ 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,
@@ -29,7 +27,6 @@ async fn write_concurrently(
             let id = actor
                 .ask(CreateNew {
                     plaintext: SafeCell::new(plaintext.clone()),
-                    aad: TEST_AAD.to_vec(),
                 })
                 .await
                 .unwrap();
@@ -123,7 +120,7 @@ async fn insert_failure_does_not_create_partial_row() {
     drop(conn);
 
     let err = actor
-        .create_new(SafeCell::new(b"should fail".to_vec()), TEST_AAD.to_vec())
+        .create_new(SafeCell::new(b"should fail".to_vec()))
         .await
         .unwrap_err();
     assert!(matches!(err, Error::DatabaseTransaction(_)));
@@ -169,12 +166,12 @@ async fn decrypt_roundtrip_after_high_concurrency() {
         .await
         .unwrap();
     decryptor
-        .try_unseal(SafeCell::new(b"test-seal-key".to_vec()))
+        .try_unseal(arbiter_server::crypto::KeyCell::from([0u8; 32]))
         .await
         .unwrap();
 
     for (id, plaintext) in expected {
-        let mut decrypted = decryptor.decrypt(id, TEST_AAD.to_vec()).await.unwrap();
+        let mut decrypted = decryptor.decrypt(id).await.unwrap();
         assert_eq!(*decrypted.read(), plaintext);
     }
 }

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

@@ -5,24 +5,22 @@ use arbiter_server::{
         GlobalActors,
         vault::{Error, Vault},
     },
-    crypto::encryption::v1::{Nonce, ROOT_KEY_TAG},
+    crypto::{KeyCell, encryption::v1::{Nonce, ROOT_KEY_TAG}},
     db::{self, models, schema},
 };
 
 use diesel::{QueryDsl, SelectableHelper};
 use diesel_async::RunQueryDsl;
 
-const TEST_AAD: &[u8] = b"test-aad";
-
 #[tokio::test]
 #[test_log::test]
-async fn bootstrap() {
+async fn test_bootstrap() {
     let db = db::create_test_pool().await;
     let mut actor = Vault::new(db.clone(), GlobalActors::spawn_message_bus())
         .await
         .unwrap();
 
-    let seal_key = SafeCell::new(b"test-seal-key".to_vec());
+    let seal_key = KeyCell::from([0u8; 32]);
     actor.bootstrap(seal_key).await.unwrap();
 
     let mut conn = db.get().await.unwrap();
@@ -41,25 +39,25 @@ async fn bootstrap() {
 
 #[tokio::test]
 #[test_log::test]
-async fn bootstrap_rejects_double() {
+async fn test_bootstrap_rejects_double() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
-    let seal_key2 = SafeCell::new(b"test-seal-key".to_vec());
+    let seal_key2 = KeyCell::from([0u8; 32]);
     let err = actor.bootstrap(seal_key2).await.unwrap_err();
     assert!(matches!(err, Error::AlreadyBootstrapped));
 }
 
 #[tokio::test]
 #[test_log::test]
-async fn create_new_before_bootstrap_fails() {
+async fn test_create_new_before_bootstrap_fails() {
     let db = db::create_test_pool().await;
     let mut actor = Vault::new(db, GlobalActors::spawn_message_bus())
         .await
         .unwrap();
 
     let err = actor
-        .create_new(SafeCell::new(b"data".to_vec()), TEST_AAD.to_vec())
+        .create_new(SafeCell::new(b"data".to_vec()))
         .await
         .unwrap_err();
     assert!(matches!(err, Error::NotBootstrapped));
@@ -67,19 +65,19 @@ async fn create_new_before_bootstrap_fails() {
 
 #[tokio::test]
 #[test_log::test]
-async fn decrypt_before_bootstrap_fails() {
+async fn test_decrypt_before_bootstrap_fails() {
     let db = db::create_test_pool().await;
     let mut actor = Vault::new(db, GlobalActors::spawn_message_bus())
         .await
         .unwrap();
 
-    let err = actor.decrypt(1, TEST_AAD.to_vec()).await.unwrap_err();
+    let err = actor.decrypt(1).await.unwrap_err();
     assert!(matches!(err, Error::NotBootstrapped));
 }
 
 #[tokio::test]
 #[test_log::test]
-async fn new_restores_sealed_state() {
+async fn test_new_restores_sealed_state() {
     let db = db::create_test_pool().await;
     let actor = common::bootstrapped_vault(&db).await;
     drop(actor);
@@ -87,19 +85,19 @@ async fn new_restores_sealed_state() {
     let mut actor2 = Vault::new(db, GlobalActors::spawn_message_bus())
         .await
         .unwrap();
-    let err = actor2.decrypt(1, TEST_AAD.to_vec()).await.unwrap_err();
+    let err = actor2.decrypt(1).await.unwrap_err();
     assert!(matches!(err, Error::Sealed));
 }
 
 #[tokio::test]
 #[test_log::test]
-async fn unseal_correct_password() {
+async fn test_unseal_correct_password() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
     let plaintext = b"survive a restart";
     let aead_id = actor
-        .create_new(SafeCell::new(plaintext.to_vec()), TEST_AAD.to_vec())
+        .create_new(SafeCell::new(plaintext.to_vec()))
         .await
         .unwrap();
     drop(actor);
@@ -107,22 +105,22 @@ async fn unseal_correct_password() {
     let mut actor = Vault::new(db.clone(), GlobalActors::spawn_message_bus())
         .await
         .unwrap();
-    let seal_key = SafeCell::new(b"test-seal-key".to_vec());
+    let seal_key = KeyCell::from([0u8; 32]);
     actor.try_unseal(seal_key).await.unwrap();
 
-    let mut decrypted = actor.decrypt(aead_id, TEST_AAD.to_vec()).await.unwrap();
+    let mut decrypted = actor.decrypt(aead_id).await.unwrap();
     assert_eq!(*decrypted.read(), plaintext);
 }
 
 #[tokio::test]
 #[test_log::test]
-async fn unseal_wrong_then_correct_password() {
+async fn test_unseal_wrong_then_correct_password() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
     let plaintext = b"important data";
     let aead_id = actor
-        .create_new(SafeCell::new(plaintext.to_vec()), TEST_AAD.to_vec())
+        .create_new(SafeCell::new(plaintext.to_vec()))
         .await
         .unwrap();
     drop(actor);
@@ -131,13 +129,13 @@ async fn unseal_wrong_then_correct_password() {
         .await
         .unwrap();
 
-    let bad_key = SafeCell::new(b"wrong-password".to_vec());
+    let bad_key = KeyCell::from([1u8; 32]);
     let err = actor.try_unseal(bad_key).await.unwrap_err();
     assert!(matches!(err, Error::InvalidKey));
 
-    let good_key = SafeCell::new(b"test-seal-key".to_vec());
+    let good_key = KeyCell::from([0u8; 32]);
     actor.try_unseal(good_key).await.unwrap();
 
-    let mut decrypted = actor.decrypt(aead_id, TEST_AAD.to_vec()).await.unwrap();
+    let mut decrypted = actor.decrypt(aead_id).await.unwrap();
     assert_eq!(*decrypted.read(), plaintext);
 }

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

@@ -10,47 +10,45 @@ 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() {
+async fn test_create_decrypt_roundtrip() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
     let plaintext = b"hello arbiter";
     let aead_id = actor
-        .create_new(SafeCell::new(plaintext.to_vec()), TEST_AAD.to_vec())
+        .create_new(SafeCell::new(plaintext.to_vec()))
         .await
         .unwrap();
 
-    let mut decrypted = actor.decrypt(aead_id, TEST_AAD.to_vec()).await.unwrap();
+    let mut decrypted = actor.decrypt(aead_id).await.unwrap();
     assert_eq!(*decrypted.read(), plaintext);
 }
 
 #[tokio::test]
 #[test_log::test]
-async fn decrypt_nonexistent_returns_not_found() {
+async fn test_decrypt_nonexistent_returns_not_found() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
-    let err = actor.decrypt(9999, TEST_AAD.to_vec()).await.unwrap_err();
+    let err = actor.decrypt(9999).await.unwrap_err();
     assert!(matches!(err, Error::NotFound));
 }
 
 #[tokio::test]
 #[test_log::test]
-async fn ciphertext_differs_across_entries() {
+async fn test_ciphertext_differs_across_entries() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
     let plaintext = b"same content";
     let id1 = actor
-        .create_new(SafeCell::new(plaintext.to_vec()), TEST_AAD.to_vec())
+        .create_new(SafeCell::new(plaintext.to_vec()))
         .await
         .unwrap();
     let id2 = actor
-        .create_new(SafeCell::new(plaintext.to_vec()), TEST_AAD.to_vec())
+        .create_new(SafeCell::new(plaintext.to_vec()))
         .await
         .unwrap();
 
@@ -70,22 +68,22 @@ async fn ciphertext_differs_across_entries() {
 
     assert_ne!(row1.ciphertext, row2.ciphertext);
 
-    let mut d1 = actor.decrypt(id1, TEST_AAD.to_vec()).await.unwrap();
+    let mut d1 = actor.decrypt(id1).await.unwrap();
-    let mut d2 = actor.decrypt(id2, TEST_AAD.to_vec()).await.unwrap();
+    let mut d2 = actor.decrypt(id2).await.unwrap();
     assert_eq!(*d1.read(), plaintext);
     assert_eq!(*d2.read(), plaintext);
 }
 
 #[tokio::test]
 #[test_log::test]
-async fn nonce_never_reused() {
+async fn test_nonce_never_reused() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
     let n = 5;
     for i in 0..n {
         actor
-            .create_new(SafeCell::new(format!("secret {i}").into_bytes()), TEST_AAD.to_vec())
+            .create_new(SafeCell::new(format!("secret {i}").into_bytes()))
             .await
             .unwrap();
     }
@@ -139,7 +137,7 @@ async fn broken_db_nonce_format_fails_closed() {
     drop(conn);
 
     let err = actor
-        .create_new(SafeCell::new(b"must fail".to_vec()), TEST_AAD.to_vec())
+        .create_new(SafeCell::new(b"must fail".to_vec()))
         .await
         .unwrap_err();
     assert!(matches!(err, Error::BrokenDatabase));
@@ -147,7 +145,7 @@ 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()), TEST_AAD.to_vec())
+        .create_new(SafeCell::new(b"decrypt target".to_vec()))
         .await
         .unwrap();
     let mut conn = db.get().await.unwrap();
@@ -158,6 +156,6 @@ async fn broken_db_nonce_format_fails_closed() {
         .unwrap();
     drop(conn);
 
-    let err = actor.decrypt(id, TEST_AAD.to_vec()).await.unwrap_err();
+    let err = actor.decrypt(id).await.unwrap_err();
     assert!(matches!(err, Error::BrokenDatabase));
 }