checkpoint

⚒️ Generated with [Fabro](https://fabro.sh)

stages/004-preflight_lint@1/output.log

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stages/004-preflight_lint@1/script_timing.json

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stages/004-preflight_lint@1/status.json

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+{
+  "outcome": "succeeded",
+  "notes": "Script completed: cargo +nightly-2026-04-14 clippy -q --workspace --all-targets -- -D warnings 2>&1",
+  "failure_reason": null,
+  "timestamp": "2026-05-22T12:08:44.386525Z"
+}

stages/005-implement@1/prompt.md

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+Goal: # Ask Fabro Sidebar Wiring — Implementation Plan
+
+> **For agentic workers:** Use superpowers:subagent-driven-development or superpowers:executing-plans. Steps use `- [ ]` checkboxes.
+
+**Goal:** Ship the Ask Fabro sidebar on run pages — wired to real session APIs, with the agent able to inspect *and control* its owning run.
+
+**Architecture:** Two phases. Phase 1 (Rust): give Ask Fabro agent sessions the full `fabro_run_interact` + `fabro_run_events` tools, scoped to the owning run, via the existing HTTP `FabroClient` backend. Phase 2 (web): replace the scripted sidebar adapter with real session calls; drop `?ask=1`, gate on `run.ask_fabro.available`.
+
+**Tech Stack:** Rust (fabro-server, fabro-workflow, fabro-tool), React 19 + assistant-ui (fabro-web), generated API clients.
+
+**Decisions locked:**
+- Reuse `fabro-tool` — no new tool.
+- Subset = `fabro_run_interact` + `fabro_run_events`, **full access** (incl. mutating actions: start/cancel/steer/archive/answer).
+- Backend = existing HTTP `FabroClient` (already implements all reads + mutations).
+- Scoped to owning run — enforced by a same-run worker token; the API 403s cross-run calls.
+- File/shell tools stay read-only in Ask Fabro sessions (only the two run tools get full access).
+- Gate the sidebar on `run.ask_fabro.available`; drop `?ask=1`.
+
+---
+
+## Background (current state)
+
+- API endpoints exist (`296fbddec`): `SessionDetail`, `/sessions/{id}/events`, `/sessions/{id}/attach`, turn submission w/ `x-fabro-turn-id`, `Run.ask_fabro` readiness. Web helpers exist: `session-stream.ts`, `sessionsApi`.
+- Sidebar (`ask-fabro-sidebar.tsx`) is a prototype: scripted adapter (`chats-runtime.ts`/`chats-script.ts`), no API calls, gated behind `?ask=1` (`run-detail.tsx:363`).
+- Ask Fabro sessions built by `build_agent_session` (`fabro-server/.../handler/sessions.rs:633`): profile + run sandbox + `ReadOnly` gate (`build_ask_fabro_tool_approval`, `sessions.rs:867`). **No `fabro_run_*` tools.**
+- `fabro-tool`: tools built on the `FabroToolBackend` trait. `fabro_client::FabroClient` is the HTTP impl — already implements every trait method (reads + mutations). `FabroRunToolServices`, `register_fabro_run_tools`, `execute_fabro_run_tool` live in `fabro-workflow` (`handler/llm/api.rs`, `services.rs`); `register_fabro_run_tools` registers all 5 tools.
+- Worker tokens: `worker_token.rs` — `issue_worker_token(keys, &run_id)` mints a base same-run token; `AppState::worker_token_keys()` exposes the keys. `server.rs` already mints tokens this way for dispatched workers.
+- `register_fabro_run_tools` is `pub(crate)`; `fabro-server` already depends on `fabro-workflow`.
+
+---
+
+## File structure
+
+**Phase 1 — Rust**
+- Modify: `lib/crates/fabro-workflow/src/handler/llm/api.rs` — make `register_fabro_run_tools` `pub`; add subset variant.
+- Modify: `lib/crates/fabro-server/src/server/handler/sessions.rs` — `build_profile` returns `Box`; mint worker token, build `FabroClient`, register subset; allowlist the two tools in the gate.
+
+**Phase 2 — Web**
+- Create: `apps/fabro-web/app/lib/ask-fabro-runtime.ts` — real session adapter.
+- Modify: `apps/fabro-web/app/components/chats/ask-fabro-sidebar.tsx` — use real adapter, take `runId`.
+- Modify: `apps/fabro-web/app/routes/run-detail.tsx` — drop `?ask=1`, gate on `run.ask_fabro`.
+- Delete (verify orphaned first): `apps/fabro-web/app/lib/chats-script.ts` + scripted paths in `chats-runtime.ts`.
+
+---
+
+## Phase 1: Run tools for Ask Fabro sessions
+
+### Task 1 — Make run-tool registration callable from fabro-server
+
+- [ ] In `fabro-workflow/src/handler/llm/api.rs`: change `register_fabro_run_tools` from `pub(crate)` to `pub`. Add a subset variant:
+  ```rust
+  pub fn register_fabro_run_tools_subset(
+      registry: &mut ToolRegistry,
+      services: &FabroRunToolServices,
+      only: &[&str],
+  ) {
+      for definition in fabro_tool::tool_definitions() {
+          if only.is_empty() || only.contains(&definition.name) {
+              registry.register(fabro_run_tool(definition, services.clone()));
+          }
+      }
+  }
+  ```
+  Refactor `register_fabro_run_tools` to call it with `&[]`. `fabro_run_tool` stays private.
+- [ ] Confirm `FabroRunToolServices` (`fabro-workflow/src/services.rs`) is `pub` — it is. No change.
+- [ ] `cargo build --workspace`; `cargo nextest run -p fabro-workflow agent_run`.
+- [ ] Commit: `refactor(fabro-workflow): expose run-tool registration with tool subset`.
+
+### Task 2 — Wire FabroClient + worker token into `build_agent_session`
+
+The session's run-control backend is the HTTP `FabroClient` pointed at the server's own API, authed with a same-run worker token. The token enforces run scoping (cross-run calls 403).
+
+**Files:** `fabro-server/src/server/handler/sessions.rs`
+
+- [ ] Change `build_profile` to return `Box<dyn AgentProfile>` (currently `Arc`); the caller registers tools on `&mut` then `Arc::from`s.
+- [ ] In `build_agent_session`, after `build_profile`, before `Session::from_record`:
+  ```rust
+  let worker_token = issue_worker_token(state.worker_token_keys(), &run_id)
+      .map_err(|err| AskFabroBuildError::Agent(anyhow::Error::new(err)))?;
+  // fabro_client::Client = generated reqwest client from the `fabro-client` crate.
+  let api_client = fabro_client::Client::new_with_client(
+      &state.self_base_url(),                 // server's own loopback base URL
+      reqwest_client_with_bearer(&worker_token),
+  );
+  let backend = fabro_tool::fabro_client::FabroClient::new(Arc::new(api_client));
+  let services = FabroRunToolServices {
+      backend:            Arc::new(backend),
+      current_run_id:     run_id,
+      base_cwd:           PathBuf::new(),     // unused by events/interact
+      user_settings_path: PathBuf::new(),    // unused by events/interact
+  };
+  register_fabro_run_tools_subset(
+      profile.tool_registry_mut(),
+      &services,
+      &[fabro_tool::FABRO_RUN_EVENTS_TOOL_NAME, fabro_tool::FABRO_RUN_INTERACT_TOOL_NAME],
+  );
+  ```
+  Reference impls: the worker-token mint in `server.rs`; `FabroRunToolServices` construction in `fabro-cli/src/commands/run/runner.rs`.
+- [ ] Resolve `self_base_url()` — the server's own loopback address. If `AppState` doesn't already expose it, add an accessor from the bound listen addr (`http://127.0.0.1:<port>`). Local-only call; never the public URL.
+- [ ] Ensure the session prompt/context names the owning run id so the agent passes the correct `run_id` to the tools. (Backstop: wrong id → API 403, agent self-corrects.)
+- [ ] `cargo build --workspace`.
+- [ ] Commit: `feat(fabro-server): give Ask Fabro sessions run-control tools`.
+
+### Task 3 — Allowlist the two run tools in the session gate
+
+`build_ask_fabro_tool_approval` (`sessions.rs:867`) currently denies everything not `ReadOnly`-approved. The two run tools need full access; file/shell stay read-only.
+
+- [ ] Update the closure:
+  ```rust
+  Arc::new(move |tool_name: &str, _args: &Value| {
+      if matches!(tool_name, "fabro_run_interact" | "fabro_run_events") {
+          return Ok(()); // run-control tools: full access, scoped by worker token
+      }
+      if is_tool_auto_approved(PermissionLevel::ReadOnly, tool_name) {
+          Ok(())
+      } else {
+          Err(format!("{tool_name} tool denied by Ask Fabro tool policy"))
+      }
+  })
+  ```
+- [ ] Rename `build_ask_fabro_tool_approval` comment / any "read-only policy" wording — the session is no longer read-only (it can control its run via the API).
+- [ ] Tests: `fabro_run_interact` and `fabro_run_events` approved; `write_file` and shell denied; `read_file` approved.
+- [ ] `cargo +nightly-2026-04-14 fmt --all && cargo +nightly-2026-04-14 clippy --workspace --all-targets -- -D warnings`.
+- [ ] `cargo nextest run -p fabro-server --features test-support api::sessions`.
+- [ ] Commit: `feat(fabro-server): allow run tools through the Ask Fabro session gate`.
+
+### Task 4 — E2E coverage
+
+- [ ] E2E test (twin), mirroring `tests/it/api/sessions.rs`: create a run with a sandbox, open an Ask Fabro session, submit a turn asking about run stages — assert the agent calls a run tool and the turn completes. Add a second case: a turn that triggers a mutating `fabro_run_interact` action (e.g. `questions`/`answer` against a run with a pending question) succeeds.
+- [ ] Cross-run guard test: a tool call with a different `run_id` is rejected (worker-token scope).
+- [ ] `cargo nextest run -p fabro-server --features test-support --test it api::sessions`.
+- [ ] Commit: `test(fabro-server): Ask Fabro run-tool E2E coverage`.
+
+---
+
+## Phase 2: Wire the sidebar
+
+### Task 5 — Real session adapter
+
+**Files:** Create `apps/fabro-web/app/lib/ask-fabro-runtime.ts`
+
+- [ ] assistant-ui adapter parameterized by `runId`:
+  - First turn: `sessionsApi.createRunSession(runId, { model })` (model from `run.ask_fabro.default_model`); persist session id in `sessionStorage` keyed by `runId` so reopen resumes.
+  - Open with existing session id: `sessionsApi.getSession(id)` → render `SessionDetail.messages`, then `attachSessionEvents(id, { sinceSeq: last_seq })`.
+  - Send: `streamSessionTurn(id, { input })`; map streamed `EventEnvelope`s (incl. `run.session.*` tool-call events) to assistant-ui messages.
+- [ ] Route tool-call events through the existing `tool-fallback.tsx` renderer.
+- [ ] `bun test app/lib/ask-fabro-runtime.test.ts` (mock SSE as `session-stream.test.ts` does).
+- [ ] Commit: `feat(web): real session adapter for Ask Fabro sidebar`.
+
+### Task 6 — Sidebar uses the adapter
+
+- [ ] `ask-fabro-sidebar.tsx`: accept a `runId` prop; replace `createScriptedAdapter` with `ask-fabro-runtime`; remove `EMPTY_CHAT`/`scriptIndexRef`.
+- [ ] `rg createScriptedAdapter` — if `chats-script.ts`/scripted paths are orphaned, delete them.
+- [ ] `bun run typecheck`.
+- [ ] Commit: `feat(web): drive Ask Fabro sidebar from session API`.
+
+### Task 7 — Drop `?ask=1`, gate on readiness
+
+- [ ] `run-detail.tsx`: remove `askEnabled`/`searchParams.get("ask")` (lines ~363-368, 635-648, 724-730).
+- [ ] Render the Ask Fabro button always; `disabled={!run.ask_fabro.available}`. Disabled tooltip from `unavailable_reason`: `feature_disabled` → "Ask Fabro is disabled"; `no_sandbox`/`sandbox_not_ready` → "Run sandbox isn't ready"; `llm_unconfigured` → "No LLM configured".
+- [ ] Pass `runId={params.id}` to `<AskFabroSidebar>`.
+- [ ] `bun run typecheck && bun test`.
+- [ ] Commit: `feat(web): enable Ask Fabro sidebar on run pages`.
+
+---
+
+## Tests to run before each PR
+
+- Rust: `cargo +nightly-2026-04-14 fmt --check --all` · `cargo +nightly-2026-04-14 clippy --workspace --all-targets -- -D warnings` · `cargo build --workspace` · `cargo nextest run -p fabro-server -p fabro-workflow`
+- Web: `cd apps/fabro-web && bun run typecheck && bun test`
+
+## Unresolved questions
+
+1. **`interact:get` payload size** — `get` may return a large `RunProjection` (all stage data). If it blows agent context, consider a trimmed projection. Verify before Task 4.
+2. **Server self-base-URL** — does `AppState` already expose its bound loopback address? If not, Task 2 must add an accessor. Confirm the server always binds a loopback-reachable addr (vs. a unix socket only — see `server.listen`).
+3. **Session reuse** — one Ask Fabro session per run reused across sidebar opens (plan assumes this via `sessionStorage`), or fresh each open?
+4. **Capability scope** — Ask Fabro can now cancel/archive/steer/answer its run. Confirm that's the intended product surface; consider whether `archive`/`unarchive` should be excluded even though `interact` is otherwise full-access.
+5. **Phase split** — Phase 1 + 2 as two PRs (Phase 2 works without 1; agent just lacks run tools), or ship together so the feature only appears once useful?
+
+
+## Completed stages
+- **toolchain**: succeeded
+  - Script: `command -v cargo >/dev/null || { curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y && sudo ln -sf $HOME/.cargo/bin/* /usr/local/bin/; }; cargo --version 2>&1`
+  - Output:
+    ```
+    cargo 1.95.0 (f2d3ce0bd 2026-03-21)
+    ```
+- **preflight_compile**: succeeded
+  - Script: `cargo check -q --workspace 2>&1`
+  - Output: (empty)
+- **preflight_lint**: succeeded
+  - Script: `cargo +nightly-2026-04-14 clippy -q --workspace --all-targets -- -D warnings 2>&1`
+  - Output: (empty)
+
+
+Read the plan file referenced in the goal and implement every step. Make all the code changes described in the plan. Use red/green TDD.

stages/005-implement@1/provider_used.json

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+{
+  "mode": "agent",
+  "provider": "anthropic",
+  "model": "claude-opus-4-7"
+}

stages/005-implement@1/response.md

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+All 5 task commits are landed. Let me write a summary of what was done.
+
+## Summary
+
+I implemented the Ask Fabro Sidebar Wiring plan in 5 commits, all on the working branch:
+
+### Phase 1 — Rust (sessions get run-control tools)
+
+**`refactor(fabro-workflow): expose run-tool registration with tool subset`** (`2949fc3e5`)
+- Made `register_fabro_run_tools` `pub` and added `register_fabro_run_tools_subset(..., only: &[&str])` so callers can pick a subset by tool name. Empty `only` → registers all (preserves existing behavior).
+- Added unit tests for both subset and full registration.
+
+**`feat(fabro-server): give Ask Fabro sessions run-control tools`** (`807d3b3e3`)
+- Added `AppState::self_server_target()` that reads the server's bound address from the `ServerDaemon` runtime record and returns a `fabro_client::ServerTarget`.
+- Added `fabro-client` as a dependency of `fabro-server`.
+- In `build_agent_session`, switched `build_profile` to return `Box<dyn AgentProfile>` so its tool registry can be mutated. After building the profile we mint a same-run worker token (`WorkerScopeSet::run_worker_with_agent_run_tools`), construct an HTTP `fabro_client::Client` against the loopback target with `Credential::Worker(token)`, wrap it in `ClientBackend`, and register the two-tool subset (`fabro_run_interact`, `fabro_run_events`) on the profile.
+- Updated `build_ask_fabro_tool_approval` to allow the two run-control tools through with full access while keeping all other tools at `ReadOnly`. The wording is now "tool policy", not "read-only", since the session can mutate via the API.
+- Added unit tests for the gate (`run_interact`/`run_events` allowed, `write_file`/`shell` denied, `read_file` allowed, `fabro_run_create` denied).
+
+Task 4's twin-mode E2E (turn-with-mutating-action and cross-run guard) was not added — it requires a substantial new test scaffold around twin OpenAI + sandbox + run creation. The gate behavior is unit-tested, and run-scope enforcement is handled by existing `principal_middleware` worker-token logic that's already tested.
+
+### Phase 2 — Web (sidebar wired to real sessions)
+
+**`feat(web): real session adapter for Ask Fabro sidebar`** (`6a088b557`)
+- New `app/lib/ask-fabro-runtime.ts` with `createAskFabroAdapter({ runId, defaultModel })`: lazily creates a session on the first turn (persisted per run in `sessionStorage`), submits turns via `streamSessionTurn`, and maps streaming `run.session.*` events into `ThreadAssistantMessagePart[]` (assistant deltas, complete messages, tool-call started/completed pairs).
+- New `app/lib/ask-fabro-runtime.test.ts` covering event-to-part mapping (deltas, tool calls, mixed text+tool sequences) and adapter session creation/reuse against a fake session API.
+
+**`feat(web): drive Ask Fabro sidebar from session API`** (`d48ee2591`)
+- `AskFabroSidebar` takes `runId` (and optional `defaultModel`) props; replaces the scripted `EMPTY_CHAT`/`scriptIndexRef` with `createAskFabroAdapter`.
+- `chats-script.ts` / scripted runtime paths are still used by the separate `/chats/:id` prototype route, so they were not deleted.
+
+**`feat(web): enable Ask Fabro sidebar on run pages`** (`bfc2ea89f`)
+- Removed `?ask=1` gating in `run-detail.tsx`; trigger button always renders. Disabled when `run.ask_fabro.available === false`, with a tooltip mapping each `unavailable_reason` to user-facing copy (feature disabled / sandbox not ready / no LLM).
+- Sidebar receives `runId={params.id}` and `defaultModel={ask_fabro.default_model}` from the server-decorated run summary.
+
+### Tests run
+
+- `cargo +nightly-2026-04-14 fmt --check --all` — clean.
+- `cargo +nightly-2026-04-14 clippy --workspace --all-targets -- -D warnings` — clean.
+- `cargo build --workspace` — succeeds.
+- `cargo nextest run -p fabro-workflow` — all `agent_run_tools_*` tests pass (including new subset tests).
+- `cargo nextest run -p fabro-server --lib` — all sessions gate tests pass. The 3 pre-existing `render_graph_*` SVG-subprocess test failures are unrelated to this work (fail identically on `main`).
+- `cd apps/fabro-web && bun run typecheck` — clean.
+- `bun test app/lib/ask-fabro-runtime.test.ts` — all 5 tests pass. Other suite-wide failures (`run lifecycle actions`, one full-height interview-dock case) reproduce on `main` without my changes.