phase: 83_chat_save_payload_limits
All verification criteria are confirmed green. Final report:
**Phase 83 — final verification pass (all tasks already complete; verified, nothing to fix)**
- Verified `app/schemas.py` carries every A1 cap (text/thinking 32 000, sources 20, suggestions 50×200, tools 50, SourceRef 120/1000/500, ToolCall 100/2000, messages ≤200) — boundary-only, `app/api/chats.py` untouched
- Verified all test pins exist and pass: 32 unit boundary tests (both edges of every cap + round-trip), 4 oversized-422 integration pins (text/201-msgs/21-sources/PUT, each with nothing-stored/row-unchanged assertions), A3 SSE done-event pin at column maxima, dedicated E2E (anon 40 000-char POST → 422 + small save → 201)
- `uv run pytest tests/unit/test_schemas.py -v` — 32 passed
- `uv run pytest tests/integration/test_chats_api.py` — exit 0; A3 pin — passed
- `uv run pytest tests/e2e/test_chat_save_payload_limits.py -v --no-cov` — 2 passed (isolation); `uv run pytest tests/e2e/test_chat_history.py -v --no-cov` — 5 passed
- `uv run pytest` — exit 0 (~1 704 tests, 0 fail/skip); `uv run pytest --cov=app` — TOTAL 99%, `app/schemas.py` 100% (>90% ✓)
- `uv run ruff check . && uv run pyright` — clean (0 errors)
- `git diff --stat` — only `app/schemas.py`, 3 test files (+`test_chat_api.py` A3 pin, sanctioned by task 02), phase files; no `app/api/chats.py`/`alembic`/`frontend`/`pyproject`/`uv.lock` diff ✓
- All completion criteria met; commit + phase move left to the harness per pipeline rules (changes stay in working tree)
- Deviation note: list caps use `max_length` instead of `max_items` — identical in pydantic 2.13 (`max_items` is a deprecated alias); both boundaries behaviorally pinned
- Next pending phase: `84_docs_push_error_sanitization`
ducoterra
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