phase: 97_kb_tree_catalog

All completion criteria verified — everything is green, no defects found. Final report:

## Phase 97 final verification pass — ALL GREEN

**Verified (no code changes needed):**
- `GET /api/docs/tree` (admin), `build_kb_tree` pure builder, `PATCH /api/folders/summary`, migration 0018 (`manually_edited`, head confirmed), generator skip/keep + `kept_manual` stat, RAG tree UI + edit affordance in `sources.js`/`index.html`/`styles.css`
- `tests/e2e/test_kb_tree.py`: 8 passed — top level, drill source/folder, edit round-trip, clear, manual-desc-survives-sync, reload fallback, anonymous gate
- Integration: tree shape/order/403/empty/indexed-only + PATCH update/create/root/clear/404/403/no-LLM + stat-walk equivalence (in `test_docs_api.py`); 3-field `folder_summaries=` import token preserved

**Gates (exact commands):**
- `uv run pytest --cov=app --cov-report=term-missing` → **2053 passed**, TOTAL coverage **99%** (>90% ✓)
- `uv run ruff check . && uv run pyright` → **All checks passed / 0 errors**
- `uv run pytest tests/e2e/test_kb_tree.py -v --no-cov` → **8 passed** in isolation
- 30 story/RAG-view E2E suites run **one per process**: all passed, incl. `test_ls_tree_drilldown` (agent `ls` byte-identical ✓), `test_import_documents`, `test_edit_summaries`, `test_admin_auth`, `test_kb_overview`

**Completion criteria:** tree view ✓ · edit round-trip + clear ✓ · manual persists/clear resets ✓ · `ls` unchanged ✓ · pytest/coverage/lint ✓ · E2E isolation ✓ · commit — left to harness per protocol (working tree untouched, `git add/commit` not run)

**Deviations:** none. **Next pending phase:** none — `todo/` contains only 97 (96 already committed).

tests/e2e/test_quadlet_jinja_import.py

@@ -26,6 +26,11 @@ Test → story mapping (Playwright Mapping Rule):
    below threshold **and** zero FTS hits) → honest-positive: the answer
    bubble is not ``.is-deflected`` and a source chip names
    ``templates/deploy.j2``.
+
+Phase 97 adaptation: the Sources table is the DRILL-DOWN TREE — the
+rows live at their folder levels (``docs`` → ``homelab`` → ``quadlet``
+/ ``templates``); the drill is the only change, the asserted
+rows/links are unchanged.
 """
 from __future__ import annotations
 
@@ -99,6 +104,20 @@ def _reset_db(mock_port: int, seed: bool) -> ImportSummary | None:
     return _run_in_thread(_import_fixtures(mock_port))
 
 
+def _drill(page: Page, *names: str) -> None:
+    """Drill one level at a time (phase 97 — client-side, no fetch,
+    no URL change): each name is the EXACT text of the source/folder
+    link at the current level."""
+    for name in names:
+        page.click(f'#folders-tbody a.folder-link:text-is("{name}")')
+
+
+def _go_top(page: Page) -> None:
+    """Back to the top level: the breadcrumb's top-level link (call
+    between drills only — the breadcrumb is hidden at the top)."""
+    page.locator("#kb-crumb a.kb-crumb-link").first.click()
+
+
 # ---------------------------------------------------------------------------
 # 1. Default-extensions import indexes the new formats (API view)
 # ---------------------------------------------------------------------------
@@ -133,7 +152,12 @@ def test_quadlet_and_jinja_indexed(page: Page, app_url: str, mock_llm: int, db_r
 def test_sources_table_shows_them(page: Page, app_url: str, mock_llm: int, db_ready: None) -> None:
     _reset_db(mock_llm, seed=True)
     login(page, app_url)  # phase 16: the Sources catalog is admin-only
-    for path in NEW_FORMAT_DOCS:
+    for i, path in enumerate(NEW_FORMAT_DOCS):
+        # Phase 97: the rows live at their folder levels — drill
+        # source → folder(s) per path (the drill is the only change).
+        if i > 0:
+            _go_top(page)
+        _drill(page, "docs", *path.rsplit("/", 1)[0].split("/"))
         row = page.locator("#docs-tbody tr", has_text=path)
         expect(row).to_have_count(1)
         link = row.locator("td:nth-child(2) a.doc-link")
@@ -154,6 +178,8 @@ def test_container_content_viewable(
     _reset_db(mock_llm, seed=True)
     login(page, app_url)  # phase 16: the Sources catalog is admin-only
 
+    # Phase 97: the row lives at its folder level — drill first.
+    _drill(page, "docs", "homelab", "quadlet")
     row = page.locator("#docs-tbody tr", has_text="homelab/quadlet/compose.container")
     expect(row).to_have_count(1)
     link = row.locator("td:nth-child(2) a.doc-link")