phase: 106_document_dates

Everything is verified green. Final report:

**Phase 106 — Document dates (final verification pass; all 10 tasks already complete)**

- Verified all phase artifacts: alembic `0020` (dev DB at `0020`), `doc_dates.py`, git `file_commit_dates`, importer `doc_dates_by_root`/`dates_updated`, both entry-point wirings, date APIs + tree `created_at`/`updated_at`, LLM surfaces (prompt block, `read` line 2, appended `ls` field), `apply_recency_boost` in `retrieve()`, UI columns/badge, admin editor, mock-LLM regex — all present and correct; no defects found, no fixes needed.
- `uv run pytest --cov=app --cov-report=term-missing` → **2299 passed, TOTAL 99%** (>90% ✓)
- `uv run pytest tests/e2e/test_document_dates.py -v --no-cov` → **6/6 passed** in isolation (DB up)
- 12 regression E2E suites (retrieval_quality, whole_document_context, agent_document_tools, ls_tree_drilldown, read_truncation_cap, kb_tree, kb_tree_nav, document_viewer, edit_summaries, import_documents, sync_button, hidden_folders_toggle, smoke) → **all green in isolation**
- `uv run ruff check .` → clean; `uv run pyright` → **0 errors, 0 warnings**

**Completion criteria:** 1) non-null `created_at` + 0020 upgrade/downgrade on dev DB ✓ (real-Alembic integration tests) 2) sync refresh/older/manual-persists/content-reset/no sources_meta bump ✓ 3) zip/tar mtime + future→today ✓ 4) LLM date surfaces + cross-check ✓ 5) UI Created/Updated/badge positions ✓ 6) admin editor set+revert round-trip ✓ 7) old-correct-beats-new-similar (defaults & boost-off) + near-tie + `BOR_RECENCY_BOOST=0` byte-identical ✓ 8) full gate ✓ 9) commit/phase-move — left to harness per instructions.

- **Notable:** recency default tuned 0.001 → **0.0007** (task 07 step 5 explicitly permits; measured margins recorded in `test_recency_boost.py` docstring).
- **Next pending phase:** none — `todo/` holds only this phase.

tests/unit/test_summary_edit_ui.py

@@ -107,14 +107,18 @@ def test_gate_runs_after_the_phase36_base_construction() -> None:
     36 (the anonymous byte-for-byte shape): the base construction
     (className, the bare h2 label, the .doc-summary-text node, the
     append) precedes the gate call, and the admin wiring runs ONLY in
-    the gate's success branch (``if (admin) wireSummaryEdit(...)``)."""
+    the gate's success branch (``if (admin) wireSummaryEdit(...)``).
+    The summary gate is searched AFTER the section mount — phase 106
+    (task 09) added the date editor's own ``docAdminReady()`` gate
+    earlier in renderDocument (one gate per admin affordance, both on
+    the same cached whoami promise)."""
     js = _js()
     base = js.find('section.className = "doc-summary"')
     label = js.find('title.textContent = "Summary"')
     text_node = js.find('body.className = "doc-summary-text"')
     append = js.find("section.append(title, body)")
     mount = js.find("contentEl.appendChild(section)")
-    gate = js.find("void docAdminReady().then(")
+    gate = js.find("void docAdminReady().then(", mount)
     wiring = js.find("if (admin) wireSummaryEdit(section, doc);")
     assert 0 < base < label < text_node < append < mount < gate < wiring, (
         "phase-36 base construction first; the admin affordance is a "