All verification complete. Final report: **Phase 98 — Sync summary visibility: final verification pass** (all 5 tasks already complete; implementation verified against the design, no defects found, no code changes needed) - **Implementation checked:** `SyncStatus` phase machine (4 new keys, terminal-keep counts), `on_progress` hook in `generate_folder_summaries`, `summary_pending` on `KbTreeSource`/`KbTreeFolder` + D3 rule in `build_kb_tree`, phase-aware sync labels + pending UI in `sources.js`, `.kb-summary-pending` CSS — all match decisions D1–D5. - **Unit + integration:** `uv run pytest` → 2184 tests, 0 failed/errors (exit 0) - **Coverage:** `uv run pytest --cov=app --cov-report=term-missing` → **99%** on `app/` (criterion >90% ✓; `app/api/sync.py` and `app/rag/folder_summaries.py` at 100%) - **Lint/types:** `uv run ruff check .` → All checks passed; `uv run pyright` → 0 errors, 0 warnings - **Phase E2E (isolation):** `uv run pytest tests/e2e/test_sync_summary_visibility.py -v --no-cov` → **3 passed** (phase machine, live label, pending markers + gap-fill self-heal) - **Regression suites (each isolated, `--no-cov`):** test_kb_tree ✓, test_ls_tree_drilldown 3 ✓, test_sync_button 3 ✓, test_sync_upload_progress 4 ✓, test_oneshot_llm_retry 2 ✓, test_local_directory_sources 3 ✓ - **Completion criteria:** all 7 verified green — status phase fields + terminal semantics; `Writing KB overview…`/`Summarizing folders… (n/m)` labels (title + aria-live); pending set == `missing_folder_summaries` (integration cross-check pinned at `test_docs_api.py:428`); CLI/`ls` byte-identity (no changes to those paths, pins green); suite/coverage/lint gates; dedicated + regression E2E. Commit left to the harness per protocol (no `git add`/`commit` run). - **Decisions/deviations:** none — no fixes were required this pass. - **Next pending phase:** `99_kb_tree_table_and_back_nav`.