phase: 159_edit_and_resend_message

All completion criteria verified. Final report:

**Phase 159 — Edit the last question and re-ask it: VERIFIED COMPLETE** (all 4 tasks already in `complete/`; this pass verified end-to-end)

**Verified (implementation landed + tests green):**
- `app.js`: `EDIT_ICON`, `lastUserWrap`, `appendEditButton`/`markLastEditable` (single-target discipline, in-flight guard), `openEditor` (labelled textarea, `maxlength=4000`, Escape/Ctrl+⌘+Enter, empty guard), save path: replace → splice tail → DOM removal → `lastBrainWrap=null` → `saveConversation`+`persistConversation` → `runTurn(text,{reask:true})` — matches README exactly
- `styles.css`: `.edit-btn`/`.edit-form`/`.edit-error`/`.is-editing` + mobile 44px; unit pins 40, E2E 7, integration `test_chats_api.py` extended

**Test/lint results (all green):**
- `uv run pytest` — 3,661 tests, exit 0
- `uv run pytest --cov=app --cov-report=term-missing` — TOTAL **99%** (>90%)
- `uv run ruff check . && uv run pyright` — all checks passed; 0 errors
- `uv run pytest tests/e2e/test_edit_and_resend.py -v --no-cov` (DB up) — **7/7 passed**
- Regressions in isolation: `test_retry_answer.py` 4/4, `test_failed_turn_retry.py` 4/4, `test_chat_persistence.py` 4/4

**Completion criteria:** all 7 ✓ — Edit on last bubble + prefill + Escape/Cancel restore (E2E #3); replace+truncate+re-ask with no duplicated question (E2E #1); refresh survival (E2E #4); failed/“question too long” turn editable + trim re-asks (E2E #5); earlier bubbles un-editable + byte-identical Retry/Stop/persistence (E2E #2 + regressions + unit pins); suite/coverage/lint ✓; E2E + regressions isolated ✓. Commit + phase-dir move: harness's job (no git ops by me, per protocol).

**Documentation:** README.md — full review; phase 159 section cross-checked against `app.js` source (cap, keys, truncate, image survival) — consistent, no changes needed; all 30 `.env.example` vars documented. AGENTS.md — full review; all rules/quick-ref commands valid — verified consistent, no changes needed.

**Notable:** none — no defects found in prior work; no live-infrastructure changes required.

**Next pending phase:** `160_tool_budget_telemetry`

tests/unit/test_frontend_failed_turn.py

@@ -175,14 +175,21 @@ def test_finalize_failed_turn_persists_failed_in_both_shapes() -> None:
 
 
 def test_finalize_failed_turn_ends_retryable() -> None:
-    """The funnel ENDS with ``markLastRetryable()`` (the last statement
-    — a trailing comment is fine) — the in-bubble Retry button lands
-    on the failed bubble (the last brain wrap)."""
+    """The funnel ENDS with ``markLastRetryable()`` immediately
+    followed by ``markLastEditable()`` (phase 159 task 01 — the
+    failed turn's question is editable too: the trim-and-re-ask
+    remedy) — the in-bubble Retry + Edit buttons land on the failed
+    bubble (the last brain wrap / the last user wrap)."""
     js = _js()
     body = _fn_body(js, "finalizeFailedTurn").rstrip()
-    last_line = body.splitlines()[-1].strip()
-    assert last_line.startswith("markLastRetryable();"), (
-        "finalizeFailedTurn must end with the markLastRetryable() call"
+    lines = [line for line in body.splitlines() if line.strip()]
+    assert lines[-1].strip().startswith("markLastEditable();"), (
+        "finalizeFailedTurn must end with the markLastEditable() call "
+        "(phase 159 — the failed turn's question stays editable)"
+    )
+    assert lines[-2].strip().startswith("markLastRetryable();"), (
+        "the markLastEditable() call must sit immediately after "
+        "markLastRetryable() (the paired settle)"
     )