phase: 130_chat_answer_clusters

**Phase 130 — final verification pass: 100% green, complete.**

- **Verified:** chips-only row (no chip for image docs) → images-only row (`.msg-images`) → related row → `.msg-actions` last; `getActionsRow` used by all 3 buttons + stopped/failed notes; `markLastRetryable` save-re-append hack gone; in-place chip fallback on image-load failure; CSS right-align with per-button auto margins removed — implementation matches the design in every detail.
- **Completion criteria:** (1) mixed citation renders chips→images→actions-last, DOM-asserted ✅ (2) all 3 buttons in one right-aligned `.msg-actions`; non-admin sees Retry-only; restore path identical ✅ (3) 404-bytes figure → plain chip, unit-pinned ✅ (4) E2E isolated ✅ (5) no behavior change (modal affordances, related tier, ARIA names) ✅
- **Tests/lint/coverage:** `uv run pytest tests/e2e/test_chat_answer_clusters.py -v --no-cov` → 4 passed; `uv run pytest --cov=app --cov-report=term-missing` → 3061 passed, **99%** app coverage; the 4 E2E files this phase modified (test_answer_images, test_image_documents, test_pdf_support, test_responsive_polish) → 22 passed in isolation; `uv run ruff check .` clean, `uv run pyright` → 0 errors.
- **Docs:** README.md — verified consistent in full (page table vs routes, env-var coverage vs `.env.example`, phase-130 cluster wording already in tree); no changes needed. AGENTS.md — fixed one pre-existing inconsistency: rule 5 still cited the retired "centered 46rem chat column"; now states the 72rem container contract (phase 100).
- **Decisions:** PLAN.md §7.1 still says 46rem, but it's owner-managed (phase 100 records the supersession pending owner sign-off) and out of my editable scope — AGENTS.md now cross-references the supersession.
- **Next pending phase:** `131_read_line_ranges` (todo/).

tests/e2e/test_image_documents.py

@@ -413,12 +413,13 @@ def test_chat_sources_block_shows_the_inline_image(
     turn chips nothing): the mock's echo carries the agent ``read``
     result VERBATIM — including the task-05 ``IMAGE_DOC_MARKER`` line
     (the model saw the description, not raw bytes) — and the answer's
-    sources block carries the citation chip (the READ doc clears the
-    usefulness floor) AND the compact inline figure — the ``<img>``
-    from the bytes route, the visible caption + ``alt`` settling to
-    the document's summary (the figure fetches it from the content
-    endpoint — the frame carries no summary), the "shown in the chat
-    nicely" contract."""
+    sources block carries the citation (the READ doc clears the
+    usefulness floor) as the compact figure in the images row
+    (phase 130 task 01: NO chip for an image doc — the figure IS the
+    citation) — the ``<img>`` from the bytes route, the visible
+    caption + ``alt`` settling to the document's summary (the figure
+    fetches it from the content endpoint — the frame carries no
+    summary), the "shown in the chat nicely" contract."""
     login(page, app_url, next="/")
     expect(page.locator("#kb-banner")).to_be_hidden()
 
@@ -433,15 +434,17 @@ def test_chat_sources_block_shows_the_inline_image(
     expect(page.locator("#send-btn")).to_be_enabled(timeout=30_000)
     expect(page.locator("#send-label")).to_have_text("Send")
 
-    # The citation chip (the text affordance stays — the figure is
-    # additive, not a replacement).
-    chip = page.locator(".msg.brain .source-chip")
-    expect(chip).to_have_count(1)
-    expect(chip).to_have_text(f"{SOURCE_NAME}/{DOC_PATH}")
+    # Phase 130 (task 01, TODO L6): NO chip for the image doc — its
+    # figure is the citation — and the figure sits in its own images
+    # cluster (.msg-meta.msg-images), not interleaved with a chip.
+    expect(page.locator(".msg.brain .source-chip")).to_have_count(0)
+    row = page.locator(".msg.brain .msg-meta.msg-images")
+    expect(row).to_have_count(1)
+    expect(row).to_have_attribute("aria-label", "Source images")
 
     # The inline figure: image + caption, both settling to the summary
     # (the content fetch resolves the alt/caption after the title).
-    fig = page.locator(".msg.brain .source-image")
+    fig = row.locator(".source-image")
     expect(fig).to_have_count(1)
     img = fig.locator(".source-image-img")
     expect(img).to_be_visible(timeout=15_000)