Closes the termination-control gap left by PR #28432, which shipped the
read-only sibling endpoints (/workers/active, /runs/{run_id},
/runs/{run_id}/inspect) but no way to stop a misbehaving worker from
the dashboard without dropping to the CLI.
The new endpoint resolves run_id -> task_id and delegates to the
existing kanban_db.reclaim_task() flow, so the SIGTERM->SIGKILL
escalation, run-outcome bookkeeping, and event-log append all match
POST /tasks/{task_id}/reclaim exactly. No new termination semantics
introduced.
Responses:
200 {ok, run_id, task_id} on success
404 unknown run_id
409 run already ended OR task no longer reclaimable
Refs: #23762
Remove unused imports (F401) and duplicate/shadowed import
redefinitions (F811) across the codebase using ruff's safe
autofixes. No behavioral changes -- imports only.
- ~1400 safe autofixes applied across 644 files (net -1072 lines)
- __init__.py re-exports preserved (excluded from F401 removal so
public re-export surfaces stay intact)
- Re-exports that are imported or monkeypatched by tests but look
unused in their defining module are kept with explicit # noqa:
F401 (gateway/run.py load_dotenv; run_agent re-exports from
agent.message_sanitization, agent.context_compressor,
agent.retry_utils, agent.prompt_builder, agent.process_bootstrap,
agent.codex_responses_adapter)
- Unsafe F841 (unused-variable) fixes deliberately skipped -- those
can change behavior when the RHS has side effects
- ruff lints remain disabled in pyproject.toml (only PLW1514 is
selected); this is a one-time cleanup, not a config change
Verification:
- python -m compileall: clean
- pytest --collect-only: all 27161 tests collect (zero import errors)
- core entry points import clean (run_agent, model_tools, cli,
toolsets, hermes_state, batch_runner, gateway)
- static scan: every name any test imports directly from an edited
module still resolves
Adds three read-only endpoints to the kanban dashboard plugin so the
SwitchUI workspace (and any other dashboard consumer) can track
workers across tasks without N+1 round-trips through /tasks/{task_id}.
- GET /workers/active
Single SQL JOIN of task_runs + tasks where ended_at IS NULL,
worker_pid IS NOT NULL, status='running'. Returns
{workers: [...], count, checked_at}.
- GET /runs/{run_id}
Direct lookup of any task_run row by id. Reuses existing
kanban_db.get_run() helper and _run_dict() serialiser. 404 when
not found. Mirrors GET /tasks/{task_id} 404 shape.
- GET /runs/{run_id}/inspect
Live PID stats via psutil.Process.as_dict() — cpu_percent,
memory_rss_bytes, memory_vms_bytes, num_threads, num_fds, status,
create_time, cmdline. Short-circuits with alive:false when run
has ended, has no worker_pid, the pid is gone, or psutil is
unavailable. AccessDenied surfaces as alive:true with error
rather than a 500.
11 new tests in tests/plugins/test_kanban_worker_runs.py cover the
empty-board case, running-task case, ended-run filtering,
missing-pid filtering, 404 paths, already-ended inspect, no-pid
inspect, dead-pid inspect, and live-pid inspect (psutil mocked).
All pass.
Companion termination endpoint (POST /runs/{run_id}/terminate) is
intentionally out of scope here — opening a separate issue first
since the RBAC and dispatcher-mediated soft-cancel design needs
maintainer input before code.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
