Opt-in per-document summary column rendered into the injected
<documents> index, list_project_documents JSON, and the documents API.
Pipeline (projects/summaries.py, behind the narrow enqueue_summary
interface):
- The two shelf write routes enqueue a job on created=True; dedup hits
never regenerate. Off by default (projects.summaries_enabled).
- Bounded worker pool (summary_concurrency + bounded summary_queue_size;
a full queue drops the job) fed by FIFO; shutdown drains queued jobs,
delivers one sentinel per worker via blocking put (queue smaller than
the worker pool cannot strand idle workers), and bounds only
genuinely in-flight jobs with the grace period.
- Jobs carry (document_id, project_id, user_id) explicitly; the job's
owner is bound into the user ContextVar around the model call so
tracing/usage attribution never falls back to 'default'.
- Text source reuses read_text_serving_path (convertible-first rule,
content validation); conversion has no deadline (await_drained), the
model call has a caller-side wait limit — the worker slot is retained
until the provider call actually finishes and late results are
discarded.
- Output contract: strip leading <think> reasoning -> unwrap fence/
quotes -> collapse to one line -> empty is NULL -> UTF-8 byte cap on
a character boundary; length-capped responses (provider-normalized
detectors) are failures.
- set_summary pins updated_at (literal self-assignment) so a landing
summary never reorders the shelf; owner-predicated UPDATE is a no-op
on rows purged mid-generation.
- Metrics: eligible/success/failed/skipped/queue_dropped/
uncapped_accepted.
Schema/config:
- project_documents.summary (migration 0036, nullable, no backfill;
forward-compat floor unchanged).
- Six projects.summary_* keys, all registered in STARTUP_ONLY_FIELDS
(captured once at lifespan startup); config_version 57 -> 58.
- run_oneshot_llm gains an optional model_overrides passthrough (passed
only when set, existing callers unchanged) and a detailed variant
exposing the raw response message for termination-signal detection.
Docs: API.md response field, ARCHITECTURE.md pipeline paragraph,
migrations AGENTS.md chain head, root AGENTS.md records the scoped
all-core exception with the lift-out path.
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