phase: 170_edit_bubble_sizing

All verification complete. Final report:

**Phase 170 — final verification pass (all 3 tasks were in `complete/`):**

**Verified implemented:**
- Editor renders inside the bubble: `bubble.replaceChildren(form)`, `display:none` rule deleted, `form.style.minWidth` seeded with pre-edit width, `restoreBubble()` (markdown + image re-prepend) before `closeEditor()` on Cancel/Escape, `closeEditor()` reordered before submit re-render
- Label: `editSaveBtn.textContent = "Send"` (app.js L1241)

**Gates (all 100% green):**
- `uv run pytest` → 4066 passed
- `uv run pytest --cov=app --cov-report=term-missing` → 99% on `app/` (gate >90%)
- `uv run ruff check . && uv run pyright` → clean (0 errors, 0 warnings)
- `uv run pytest tests/e2e/test_edit_bubble_sizing.py -v --no-cov` (in isolation) → 6/6 passed
- Regression set in isolation: `test_edit_and_resend.py` 7✓, `test_retry_answer.py` 4✓, `test_failed_turn_retry.py` 4✓, `test_chat_persistence.py` 4✓

**Completion criteria:** in-bubble editor + width pin ✅ · "Send" label + cancel restore + trim re-ask + "Question too long" driver case ✅ · suite/coverage/lint ✅ · E2E + regression isolation ✅ · phase dir moved to `complete/` ✅ (atomic commit is the harness's to make — changes left in the working tree per protocol)

**Documentation:** README.md reviewed in full — edit section already aligned to phase 170 (in-bubble editor + "Send"), pages table matches actual routes, all 29 `.env.example` vars documented, setup commands accurate; AGENTS.md reviewed — all referenced files/commands exist. Both verified consistent — no changes needed.

**Notable decisions:** none — verification pass only, no code changes required.

**Next pending phase:** `171_admin_settings_layout`

tests/unit/test_no_empty_answer_bubble.py

@@ -524,11 +524,13 @@ def test_bubble_selector_is_only_lookups_and_anchors() -> None:
 def test_bubble_variable_is_only_touched_for_content() -> None:
     """FINDING: the `bubble` variable (whatever a lookup bound) is
     only ever touched for CONTENT — textContent, innerHTML,
-    classList, querySelector, prepend, appendChild, setAttribute — in
-    BOTH app.js and shared.js. A geometry property on the handle
-    would read ZERO once the box is hidden, so the allowlist failing
-    here means some future code silently depends on the painted box —
-    exactly what this audit forbids."""
+    classList, querySelector, prepend, appendChild, setAttribute,
+    replaceChildren — in BOTH app.js and shared.js. A geometry
+    property on the handle would read ZERO once the box is hidden,
+    so the allowlist failing here means some future code silently
+    depends on the painted box — exactly what this audit forbids.
+    (replaceChildren joined phase 170: the editor form IS the
+    bubble's content — a content swap, not a geometry read.)"""
     content_props = {
         "textContent",
         "innerHTML",
@@ -537,6 +539,7 @@ def test_bubble_variable_is_only_touched_for_content() -> None:
         "prepend",
         "appendChild",
         "setAttribute",
+        "replaceChildren",
     }
     for path in (APP_JS, SHARED_JS):
         code = _strip_comments(_text(path))