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/unit/test_prompts_dates.py

@@ -58,6 +58,7 @@ def _doc(
     title: str = "T",
     content: str = "CONTENT",
     created_at: datetime = CREATED_AT,
+    summary: str | None = None,
 ) -> Document:
     return Document(
         id=uuid.uuid4(),
@@ -68,6 +69,7 @@ def _doc(
         content=content,
         content_hash="0" * 64,
         created_at=created_at,
+        summary=summary,
     )
 
 
@@ -171,6 +173,32 @@ def test_high_block_date_always_present_for_every_document() -> None:
     assert prompt.count("<document ") == prompt.count(' date="')
 
 
+def test_high_block_date_survives_the_summary_body_change() -> None:
+    """Phase 118 (task 03): the block BODY became the document's summary
+    (never the full content) — the D5 identity attributes, including
+    ``date`` after ``title``, survive byte-identical around the new
+    body (the E2E mock's block parser keys off exactly these)."""
+    doc = _doc(
+        source="S",
+        path="P",
+        title="T",
+        content="FULL_CONTENT_SENTINEL_42",
+        created_at=CREATED_AT,
+        summary="The stored summary.",
+    )
+    prompt = build_high_prompt([doc])
+    block = (
+        f'<document source="S" path="P" title="T" date="{DATE}">\n'
+        "The stored summary.\n"
+        "</document>"
+    )
+    assert block in prompt
+    # Attribute order pinned: date directly after title, body after.
+    assert f'title="T" date="{DATE}">' in prompt
+    # The full content stays out (A6) — only the summary rides the block.
+    assert "FULL_CONTENT_SENTINEL_42" not in prompt
+
+
 # --------------------------------------------------------------------
 # The deflection prompt — byte-identical to the pre-phase text (A8)
 # --------------------------------------------------------------------