phase: 118_summary_seed_context

**Phase 118 final verification pass — complete.** All criteria verified; 4 pre-existing defects found and fixed.

- **Verified:** summary-seed wiring (`select_suggested` top-5 no-floor → summary blocks, no full text in HIGH prompt), all-doc markdown summaries + NULL backfill (`summary_backfilled`, no `sources_meta` bump), `read` adds full text with `read_docs`-only dedupe, `done.sources` = suggested+read / durable record = suggested+related+read + `suggested=N` log line (seen live in E2E), byte-locked PERSONA/LOW/TOOLS_SECTION, battery gate PASS recorded in `TOOL_CALLING_TESTING.md` §10 (turbo 2026-09-16: 1/2/4 GREEN, cond-3 reported 9/10 per A7, contract 21/21, caps 0).
- **Defects fixed (all pre-existing, none phase-118):** ① `ChatMessage` schema missing the phase-113 `related` key → `extra="forbid"` 422'd every done-time auto-save of grounded turns with a related tier, leaving `message_count=1` (root cause of `test_share_chat` 3F; browser-level instrumentation proved the PUT 422) — added the field + unit/integration pins; ② `test_theme_semantic_completion` pins stale vs phase-117 debox (border/chip removed) — re-targeted to assert border/chip *absence*; ③ `test_header_consistency` `<26`px pin red on 26.125px native date-input line — bound relaxed to `<34` (wrap-detection intent kept); ④ `test_navbar_refresh` bor.chat.v1 key set updated for `related`.
- **Test/lint/coverage:** `uv run pytest --cov=app --cov-report=term-missing` → **2506 passed, app/ 99%** (>90%); `uv run ruff check . && uv run pyright` → clean, 0 errors.
- **E2E:** new story suite in isolation → **2 passed**; full 103-suite matrix sweep (each isolated) → **all 103 green** after the fixes; `test_share_chat` 4 passed, `test_theme_semantic_completion` 8 passed, `test_header_consistency` 3 passed, `test_navbar_refresh` 7 passed.
- **Deviations:** none from LOCKED decisions. Note: orphaned diagnostic uvicorn processes briefly made E2E sessions exercise stale code — killed and re-verified; a sweep-regenerated tracked screenshot was restored. No commits made (harness commits).
- **Completion criteria:** all 7 ✅ (commit/phase-move is the harness's step).
- **Next pending phase:** none — `todo/` holds only this phase's overview pending the harness move.

tests/integration/test_chats_api.py

@@ -63,6 +63,16 @@ FULL_BRAIN: dict[str, Any] = {
     "sources": [
         {"source": "Homelab", "path": "kubernetes.md", "title": "Kubernetes Cluster"}
     ],
+    # Phase 113's related-doc tier — the UI persists it with every
+    # grounded brain record (the restore path re-renders the row from
+    # it). It must be an ACCEPTED key: the phase-113 omission (the key
+    # missing from ChatMessage) made the extra="forbid" boundary 422
+    # every done-time auto-save carrying it, so grounded turns' brain
+    # messages never persisted (the A2 quiet failure swallowed the
+    # 422). This round-trip is the regression pin.
+    "related": [
+        {"source": "Homelab", "path": "traefik.md", "title": "Traefik Notes"}
+    ],
     "deflected": False,
     "suggestions": ["What ports does Traefik expose?"],
     "thinking": "The kubernetes doc covers the cluster layout…",
@@ -175,6 +185,7 @@ def _expect(records: list[dict[str, Any]]) -> list[dict[str, Any]]:
             "who": m["who"],
             "text": m["text"],
             "sources": m.get("sources"),
+            "related": m.get("related"),
             "deflected": m.get("deflected"),
             "suggestions": m.get("suggestions"),
             "thinking": m.get("thinking"),
@@ -411,8 +422,8 @@ def test_create_round_trips_full_brain_record(admin_client: TestClient) -> None:
     )
     assert r.status_code == 201
     # The bor.chat.v1-shaped payload round-trips losslessly: every
-    # optional key (sources/deflected/suggestions/thinking/tools/
-    # stopped) survives identical.
+    # optional key (sources/related/deflected/suggestions/thinking/
+    # tools/stopped) survives identical.
     assert r.json()["messages"][1] == FULL_BRAIN
 
 
@@ -516,9 +527,9 @@ def test_get_returns_full_payload_round_trip(admin_client: TestClient) -> None:
     assert body["id"] == created["id"]
     assert body["title"] == EXPLICIT_TITLE
     assert body["message_count"] == 2
-    # Byte-identical payload: the brain record with sources/thinking/
-    # tools/stopped (incl. the `argument: null` tool) survives the trip
-    # to Postgres and back.
+    # Byte-identical payload: the brain record with sources/related/
+    # thinking/tools/stopped (incl. the `argument: null` tool) survives
+    # the trip to Postgres and back.
     assert body["messages"] == _expect([_user(FIRST_QUESTION), FULL_BRAIN])