AGENTS.md@examples/deerflow-extension-workflows git:20261019.b6ce047A

Immutable. This exact content never changes and is served at /api/v1/blob/f194d28a0eef440e.

# Script workflow extension

Keep workflow business logic in this packaged extension. Import only public
`deerflow_extension_api` contracts, standard library and declared QuickJS dependency;
never import private `app.*` or `deerflow.*` runtime modules.

Generated script runs only in worker.py's isolated, capability-free JS context.
Never pass host callables, capability handles, credentials or ambient environment
into it. Keep every IPC and stored/public payload bounded. Parent lifecycle must
kill and reap the worker and explicitly observe child cancellation.
The worker turn cap counts worker frames only; while the worker is idle (its job
queue drained) and Agent calls are pending, wait locally with bounded cancellation,
fault and worker-exit polls instead of round-tripping empty frames, so wall time stays the only clock bound.

Persist stable child thread, input message, attempt and idempotency identity before
admission. Workflow cancel is a supervisor signal; do not cancel an admission task
and lose an already-created child. Timeout/unknown outcomes require reconciliation,
never automatic retries. Distinguish admission uncertainty from post-admission
observation timeout: interrupt/observe known runs and escalate only uncertain cleanup.
Keep the workflow deadline handler outside asyncio.timeout and test external cancellation
separately. Hash the Agent allowlist in canonical sorted order. Owner scope applies
to every public read and mutation.
Own persistence through supervisor publication even if the launching caller cancels.
Serialize launch admission and shutdown. After artifact IO, validate call limits
and step uniqueness together with await-free reservation. Hold the process lock across service life;
do not recover live records while another Gateway owns the file.

Anchor results on the visible human input, including canonical __user rewrites;
never use hidden system/memory IDs. Retain UI launch identity across refresh failures.
Thread latest state is not immutable run output. Check message/run attribution,
interrupts and pending human input before copying output. Agent success is never
human approval. Live checkpoints retain the worker. On restart, versioned bridge-journal replay
requires an authenticated recovery action; reuse committed outputs and decisions.
Legacy records are inspection-only. Never resubmit uncertain admissions. Bind human decisions to source output hash, step/attempt and authenticated
session ActionContext, never ToolContext. Persist before waking; fence duplicate
resume by checkpoint ID. Config revision is a declarative preflight guard. Store actual host assembly
evidence per child run; never expose raw credentials. File checkpoints bind
append-only captured bytes and SHA-256; preview and approved consumption read
that exact version. Never claim hard currency limits or freeze external state. Do not serialize capability handles.

Tests live in backend/tests/test_workflow_plugin.py. Run the backend offline and
blocking-I/O targets plus verify_browser.mjs. The browser fixture is loopback-only
and synthetic; it must never become a deployed authentication bypass.

Phase 3: recovery.py owns session reattachment, exact bridge replay and admission
reconciliation classification. Store.put uses conditional revisions; drain SQLite
writes through repeated cancellation before releasing the write lock. Service-own
recovered-run cancellation through child cleanup and the terminal write, and drain
it during shutdown even if its caller disconnects. Log failed service-owned actions
at error level even after caller disconnection; omit raw exception payloads as for
supervisor failures. Persist bridge intent
before host effects and responses before worker delivery. Include worker/supervisor
source and engine version in compatibility checks; Date/random are unavailable.
Preserve original wait expiry and remaining execution budget. Read captured files
by stored step/version after crashes, never overwrite them from mutable sources.
Phase 4 leases/fenced dispatch remain unimplemented: retain the exclusive flock.
Recovery tests: backend/tests/test_workflow_recovery.py, including real process kill.

AgentRuns.configuration_revision(durable=True) uses a purpose-separated HMAC
under the persisted host signing secret for restart comparison. Default revisions
remain process-local. Rotation invalidates comparisons; no raw config or secret is
returned. Recovery callers must bind a fresh authenticated session capability;
never serialize handles or reconstruct authority from a stored user ID alone.