All gates verified. Final report: **Phase 163 — final verification pass (all 5 tasks already complete; verification-only run)** - Verified D1–D4 in code: `page_strip_mode` column + migration 0027, `DocContent` absent-never-null rule keyed off `page_count`; `_persist_pdf_pages` render → atomic tmp+`os.replace` writes → stale-tail-last + `strip_class` stamp; `_regate_pdf_strip` on both unchanged paths (mirror gate, heal, repair, fail-soft, one INFO line only when acting); viewer mode branch + Text/Pages toggle (Text default, `aria-pressed`, no innerHTML, lazy imgs). - `uv run pytest --cov=app --cov-report=term-missing` → **3796 tests, exit 0, coverage 99%** (>90%) - `uv run pytest tests/e2e/test_pdf_strip_additive_selfheal.py -v --no-cov` → **5 passed** in isolation - `test_pdf_pages_in_sources + test_pictorial_pdf + test_garbage_pdf` → 10 passed; `test_document_viewer(_context) + test_image_documents` → 20 passed - `uv run ruff check .` clean; `uv run pyright` → 0 errors; alembic **0027 downgrade→upgrade CLI round-trip clean** (+ integration pins) - Completion criteria: additive view w/ toggle ✅ · primary DOM byte-identity ✅ · write-first order/mid-write-failure/atomic pins ✅ · heal + repair E2E ✅ · zero vision/LLM on fast path (mock-captured) ✅ · non-qualifying payload byte-identity ✅ · docs pass ✅ - **Documentation**: README.md + AGENTS.md reviewed in full — the phase's updates are accurate; all config-table defaults cross-checked against `app/config.py` (no drift), every page route, script, and E2E command referenced exists, every `.env.example` var documented — **verified consistent, no changes needed**. - Notable: live `Letumdei` repair is owner-runtime post-deploy per D5 (next production Sync self-heals; no live changes made); the modified `.agents/screenshots/doc_modal_scrollbar_1280.png` is an E2E-regenerated artifact left for the pipeline commit. - **Next pending phase:** `164_chat_error_honesty`