phase: 165_prose_word_wrap

All verification complete. Final report:

**Phase 165 — Prose word wrap (final verification pass)**
- Verified: `PROSE_FORMATS={txt,text}` + `isProseDoc` (single-site, image arm wins); `renderDocument` three-way branch (md → `.doc-md`, prose → `.doc-prose` text node, else `pre.doc-raw` byte-identical); `.doc-prose` CSS = 72rem column, `pre-wrap` + `overflow-wrap: anywhere`, tokens only, zero literals; `[data-view="pages"]` hide list includes `.doc-prose` as one grouped declaration; phase-116 scrollbar rules intact and modal-scoped; no `innerHTML` in the prose path.
- Tests/lint (all 100% green):
  - `uv run pytest` → **3854 passed** (unit + integration)
  - `uv run pytest --cov=app --cov-report=term-missing` → **TOTAL 99%** (>90%)
  - `uv run ruff check .` → All checks passed; `uv run pyright` → **0 errors**
  - `uv run pytest tests/e2e/test_prose_word_wrap.py -v --no-cov` → **5 passed** (isolation)
  - Isolation regressions: document_viewer 8, image_documents 4, pdf_pages_in_sources 4, pdf_strip_additive_selfheal 5, edit_summaries 4, summary_in_viewer 4, chat_answer_clusters 4, garbage_pdf 3, pdf_support 6, sticky_navbar 3, smoke 3 — all passed
- Completion criteria: image description wraps, full text, both surfaces ✔; `.txt` wraps same way ✔; `py`/`json`/code keep `pre.doc-raw` + horizontal overflow + themed modal scrollbar (E2E negative control + pins) ✔; no innerHTML, AA `--ink`/`--surface` pair ✔; full gates green ✔; commit + phase-dir move are harness-owned (not executed per pipeline rules).
- Documentation: README already updated by task 03 (viewer section + image-docs section); full README/AGENTS.md review found no further inconsistencies — **verified consistent, no changes needed**.
- Notable deviations: `.doc-prose` omits `font-family: inherit` from 00_phase D2's snippet — task 01's authoritative "exact property set" excludes it and `div` inherits fonts anyway (behavior identical). PDF deferral (A4) intact: `format == "pdf"` stays in `.doc-raw`, owner call recorded.
- Next pending phase: `166_hide_empty_answer_bubble`.

tests/unit/test_wide_column_css.py

@@ -17,9 +17,12 @@ without a browser:
   ``.shared-shell``, ``.doc-md``, ``.doc-image`` (phase 122, task 04),
   ``.doc-pages`` (phase 148, task 03 — the page strip),
   ``.doc-view-toggle`` (phase 163, task 04 — the Text/Pages toggle
-  above the additive views), and ``.doc-summary:has(+ .doc-md)`` —
-  each capped with ``max-width: var(--chat-column)`` and NOTHING else
-  in the file uses the token for a max-width (exactly seven rules);
+  above the additive views), ``.doc-prose`` (phase 165, task 01 — the
+  wrapping prose block: image descriptions and txt/text docs ride the
+  SAME reading column as their .doc-md sibling), and
+  ``.doc-summary:has(+ .doc-md)`` — each capped with
+  ``max-width: var(--chat-column)`` and NOTHING else
+  in the file uses the token for a max-width (exactly eight rules);
 * the flipped negative pin — ZERO literal ``max-width: 46rem`` rules
   remain (the phase-27/59/91 form-column caps are retired): the form
   shells (``.tuning-shell``, ``.theme-shell``, ``.doc-edit-shell``)
@@ -124,8 +127,10 @@ def test_the_reading_columns_use_the_token() -> None:
     viewer's page strip rides the SAME reading column in the shared
     #doc-content slot), .doc-view-toggle (phase 163, task 04 — the
     Text/Pages toggle sits above the additive views, aligned with
-    them) and .doc-summary:has(+ .doc-md) each cap with
-    max-width: var(--chat-column) — and exactly those seven rules use
+    them), .doc-prose (phase 165, task 01 — the wrapping prose block
+    is .doc-md's column with prose rhythm) and
+    .doc-summary:has(+ .doc-md) each cap with
+    max-width: var(--chat-column) — and exactly those eight rules use
     the token for a max-width (no other selector)."""
     css = _css()
     for selector in (
@@ -135,12 +140,13 @@ def test_the_reading_columns_use_the_token() -> None:
         ".doc-image",
         ".doc-pages",
         ".doc-view-toggle",
+        ".doc-prose",
         ".doc-summary:has(+ .doc-md)",
     ):
         assert "max-width: var(--chat-column)" in _rule_block(css, selector), (
             f"{selector} must cap with max-width: var(--chat-column)"
         )
-    assert css.count("max-width: var(--chat-column)") == 7, (
+    assert css.count("max-width: var(--chat-column)") == 8, (
         "exactly the reading-column selectors use the token"
     )