fix: route progress markdown detail through _item_row (missed fourth site)

src/attune_forms/markdown_surface.py

@@ -117,12 +117,15 @@ def _progress_lines(q: FormQuestion) -> list[str]:
     for item in q.progress_items or []:
         label = item.get("label", "")
         status = item.get("status", "")
-        detail = f" — {item['detail']}" if item.get("detail") else ""
         if q.progress_style == "report":
-            lines.append(f"- `{status}` {label}{detail}")
+            head = f"- `{status}` {label}"
         else:
             icon = PROGRESS_STATUS_ICONS.get(status, "•")
-            lines.append(f"- {icon} {label}{detail}")
+            head = f"- {icon} {label}"
+        # _item_row keeps a single-line detail inline (unchanged render)
+        # and moves a multi-line one below the bullet — the same fix the
+        # other item-bearing constructs got in the #61 batch.
+        lines.extend(_item_row(head, item.get("detail")))
     if q.options:
         head = (
             "Pick one to go deeper:"

src/attune_forms/theme.py

@@ -28,7 +28,9 @@
 excerpt — keep its newlines instead of collapsing inside a flex row,
 across triage / assumption_review / progress / confirm at once; a
 trim to fit under 10 KB was offered and declined) — no fonts, no icon
-fonts, no images, no @import.
+fonts, no images, no @import. Bar for the next raise (chair-ruled at
+the 2026-08-28 retro): raises buy FAMILIES, not rules — a single rule
+that fits after a trim does not clear it.
 
 Copyright 2026 Smart-AI-Memory
 Licensed under Apache 2.0

tests/test_markdown_surface.py

@@ -288,3 +288,35 @@ def test_multiline_detail_keeps_the_skeleton_round_tripping() -> None:
     form = form_from_dict(_hunk_board())
     skeleton = _skeleton(form_to_markdown(form))
     assert skeleton["answers"] == {"hunks": {"src/bridge.py@a1b2c3d:88-96": None}}
+
+
+def test_progress_multiline_detail_stays_inside_its_row() -> None:
+    """PROGRESS rows route detail through _item_row like the other
+    item-bearing constructs (retro probe 2026-08-29: the #61 batch
+    missed this fourth site)."""
+    md = form_to_markdown(
+        form_from_dict(
+            {
+                "title": "T",
+                "fields": [
+                    {
+                        "id": "p",
+                        "type": "progress",
+                        "text": "Status?",
+                        "progress_items": [
+                            {
+                                "label": "migrate",
+                                "status": "done",
+                                "detail": "a\n-    old\n+    new",
+                            },
+                            {"label": "ship", "status": "blocked", "detail": "one-liner"},
+                        ],
+                        "options": ["ship"],
+                    }
+                ],
+            }
+        )
+    )
+    assert "      -    old" in md
+    assert not any(ln.startswith("-    old") for ln in md.splitlines())
+    assert "- ✕ ship — one-liner" in md