Three coordinated fixes flagged as Important in the round-10 review of
PR #773:
1. Index chunk_index. The chunk-context fast path in
_get_chunk_by_index_from_qdrant and get_chunk_bbox_and_page_from_qdrant
filters on chunk_index, but the field was absent from
_PAYLOAD_INDEX_FIELDS. On Qdrant Cloud strict mode every chunk-context
lookup via chunk_index would 400 and silently fall back to the
document re-fetch path — the exact failure mode the chunk_index
shortcut exists to avoid. Added as INTEGER schema.
2. Catch raw network errors in _ensure_payload_indexes. The
create_payload_index loop only caught UnexpectedResponse, so an
httpx.ConnectError or asyncio.TimeoutError mid-loop would propagate
uncaught — leaving _qdrant_client assigned and silently skipping all
remaining fields. Added a broad Exception catch with the same
per-field containment as the 5xx path: log at ERROR with exc_info,
append to failed_fields, continue. New test covers the path.
3. Lazy-initialise _qdrant_init_lock. Constructing anyio.Lock() at
module import time works for the asyncio backend but anyio's docs
advise instantiating synchronization primitives within an async
context, and pyproject.toml's anyio_mode = "auto" means tests can
run under trio. Moved the construction into get_qdrant_client; safe
under cooperative multitasking because there is no await between the
None-check and the assignment.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
