feat: show conversations in mobile search preview (Closes #803)

tests/test_command_palette.py

@@ -386,6 +386,26 @@ process.stdout.write(JSON.stringify({{numbers:loaded.items.map(item => item.numb
     assert json.loads(result.stdout) == {"numbers": [1, 2], "more": False}
 
 
+def test_mobile_search_preview_progressively_renders_a_retryable_paged_conversation():
+    html = dashboard_bundle_text()
+    css = (FRONTEND / "dashboard.css").read_text()
+    preview_source = SEARCH_PREVIEW.read_text()
+
+    assert 'id="search-preview-conversation"' in html
+    assert 'id="search-preview-comments"' in html
+    assert 'id="search-preview-conversation-status"' in html
+    assert 'id="retry-search-preview-conversation"' in html
+    assert 'id="load-older-search-preview-comments"' in html
+    assert 'aria-live="polite"' in html
+    assert "fetchConversation:" in html
+    assert "api.retryConversation()" in preview_source
+    assert "api.loadOlderConversation()" in preview_source
+    assert "renderMarkdown(comment.body || '')" in preview_source
+    assert ".search-preview-conversation" in css
+    assert ".search-preview-comment" in css
+    assert "min-height:44px" in css
+
+
 def test_mobile_search_preview_renders_session_navigation_and_advances_after_planning():
     html = dashboard_bundle_text()
     css = (FRONTEND / "dashboard.css").read_text()
@@ -440,6 +460,85 @@ if (ready.length !== 1 || ready[0].detail.number !== 2) {{
     subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)
 
 
+def test_search_preview_publishes_detail_before_progressive_conversation_and_ignores_stale_comments():
+    script = f"""
+const createSearchPreview = require({json.dumps(str(SEARCH_PREVIEW))});
+(async () => {{
+const pending = new Map();
+const states = [];
+const preview = createSearchPreview({{
+  fetchJson: item => Promise.resolve({{...item, title:'Issue ' + item.number}}),
+  fetchConversation: item => new Promise(resolve => pending.set(item.number, resolve)),
+  mutate: () => Promise.resolve(),
+  onState: state => states.push(state),
+}});
+await preview.open({{repository:'stackchain/api', number:1, kind:'issue'}});
+const firstReady = states.find(state => state.status === 'ready' && state.detail?.number === 1);
+if (!firstReady || firstReady.conversation?.status !== 'loading') throw new Error('detail waited for conversation');
+await preview.open({{repository:'stackchain/api', number:2, kind:'issue'}});
+pending.get(1)({{comments:[{{id:1,body:'stale'}}], page:1, older_page:null}});
+pending.get(2)({{comments:[{{id:2,body:'current'}}], page:1, older_page:null}});
+await new Promise(resolve => setTimeout(resolve, 0));
+const final = states.at(-1);
+process.stdout.write(JSON.stringify({{
+  number:final.detail.number,
+  status:final.conversation.status,
+  comments:final.conversation.comments.map(comment => comment.body),
+}}));
+}})().catch(error => {{ console.error(error); process.exit(1); }});
+"""
+    result = subprocess.run(["node", "-e", script], capture_output=True, text=True)
+
+    assert result.returncode == 0, result.stderr
+    assert json.loads(result.stdout) == {
+        "number": 2,
+        "status": "ready",
+        "comments": ["current"],
+    }
+
+
+def test_search_preview_retries_failed_conversation_and_prepends_older_messages_without_duplicates():
+    script = f"""
+const createSearchPreview = require({json.dumps(str(SEARCH_PREVIEW))});
+(async () => {{
+let calls = 0;
+const states = [];
+const preview = createSearchPreview({{
+  fetchJson: item => Promise.resolve({{...item, title:'Issue'}}),
+  fetchConversation: (_item, page) => {{
+    calls += 1;
+    if (calls === 1) return Promise.reject(new Error('offline'));
+    if (page === 1) return Promise.resolve({{comments:[{{id:1,body:'old'}},{{id:3,body:'duplicate'}}], older_page:null}});
+    return Promise.resolve({{comments:[{{id:3,body:'newer'}},{{id:4,body:'newest'}}], older_page:1}});
+  }},
+  mutate: () => Promise.resolve(),
+  onState: state => states.push(state),
+}});
+await preview.open({{repository:'stackchain/api', number:42, kind:'issue'}});
+await new Promise(resolve => setTimeout(resolve, 0));
+if (states.at(-1).conversation.status !== 'error') throw new Error('failure unavailable');
+await preview.retryConversation();
+await preview.loadOlderConversation();
+const final = states.at(-1).conversation;
+process.stdout.write(JSON.stringify({{
+  calls,
+  status:final.status,
+  ids:final.comments.map(comment => comment.id),
+  olderPage:final.olderPage,
+}}));
+}})().catch(error => {{ console.error(error); process.exit(1); }});
+"""
+    result = subprocess.run(["node", "-e", script], capture_output=True, text=True)
+
+    assert result.returncode == 0, result.stderr
+    assert json.loads(result.stdout) == {
+        "calls": 3,
+        "status": "ready",
+        "ids": [1, 3, 4],
+        "olderPage": None,
+    }
+
+
 def test_search_preview_claim_is_single_flight_and_reports_confirmation():
     script = f"""
 const createSearchPreview = require({json.dumps(str(SEARCH_PREVIEW))});

tests/test_global_search.py

@@ -186,6 +186,43 @@ async def test_global_search_preview_returns_normalized_action_context(monkeypat
     assert response.json()["claimable"] is True
 
 
+@pytest.mark.anyio
+@pytest.mark.parametrize("kind", ["issue", "pull"])
+async def test_global_search_preview_conversation_returns_a_bounded_authorized_page(
+    monkeypatch, kind
+):
+    requested = []
+
+    async def conversation(repository, number, page, limit):
+        requested.append((repository, number, page, limit))
+        return {
+            "comments": [{
+                "id": 7,
+                "author": "alexander",
+                "body": "Current **decision**",
+                "created_at": "2026-08-14T12:00:00Z",
+                "url": "https://forge.example/stackchain/api/issues/42#issuecomment-7",
+            }],
+            "page": 3,
+            "older_page": 2,
+            "total": 41,
+        }
+
+    monkeypatch.setattr(
+        main.gitea_proxy, "issue_conversation_page", conversation, raising=False
+    )
+    transport = httpx.ASGITransport(app=main.app)
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+        response = await client.get(
+            f"/api/v1/repos/stackchain/api/issues/42/preview/conversation?kind={kind}&limit=20"
+        )
+
+    assert response.status_code == 200
+    assert response.headers["cache-control"] == "no-store"
+    assert response.json()["comments"][0]["body"] == "Current **decision**"
+    assert requested == [("stackchain/api", 42, None, 20)]
+
+
 @pytest.mark.anyio
 async def test_global_search_queries_issues_and_pulls_and_skips_unsafe_results():
     requests = []