Merge remote-tracking branch 'origin/main' into bb/tui-long-session-perf

# Conflicts:
#	ui-tui/src/app/interfaces.ts

tests/test_tui_gateway_server.py

@@ -1835,3 +1835,112 @@ def test_model_options_propagates_list_exception(monkeypatch):
     assert "error" in resp
     assert resp["error"]["code"] == 5033
     assert "catalog blew up" in resp["error"]["message"]
+
+
+# ---------------------------------------------------------------------------
+# prompt.submit — auto-title
+# ---------------------------------------------------------------------------
+
+class _ImmediateThread:
+    """Runs the target callable synchronously so assertions can follow."""
+
+    def __init__(self, target=None, daemon=None):
+        self._target = target
+
+    def start(self):
+        self._target()
+
+
+def test_prompt_submit_auto_titles_session_on_complete(monkeypatch):
+    """maybe_auto_title is called after a successful (complete) prompt."""
+
+    class _Agent:
+        def run_conversation(self, prompt, conversation_history=None, stream_callback=None):
+            return {
+                "final_response": "Rome was founded in 753 BC.",
+                "messages": [
+                    {"role": "user", "content": "Tell me about Rome"},
+                    {"role": "assistant", "content": "Rome was founded in 753 BC."},
+                ],
+            }
+
+    server._sessions["sid"] = _session(agent=_Agent())
+    monkeypatch.setattr(server.threading, "Thread", _ImmediateThread)
+    monkeypatch.setattr(server, "_emit", lambda *args, **kwargs: None)
+    monkeypatch.setattr(server, "make_stream_renderer", lambda cols: None)
+    monkeypatch.setattr(server, "render_message", lambda raw, cols: None)
+    monkeypatch.setattr(server, "_get_db", lambda: None)
+
+    with patch("agent.title_generator.maybe_auto_title") as mock_title:
+        server.handle_request(
+            {
+                "id": "1",
+                "method": "prompt.submit",
+                "params": {"session_id": "sid", "text": "Tell me about Rome"},
+            }
+        )
+
+    mock_title.assert_called_once()
+    args = mock_title.call_args.args
+    assert args[1] == "session-key"
+    assert args[2] == "Tell me about Rome"
+    assert args[3] == "Rome was founded in 753 BC."
+
+
+def test_prompt_submit_skips_auto_title_when_interrupted(monkeypatch):
+    """maybe_auto_title must NOT be called when the agent was interrupted."""
+
+    class _Agent:
+        def run_conversation(self, prompt, conversation_history=None, stream_callback=None):
+            return {
+                "final_response": "partial answer",
+                "interrupted": True,
+                "messages": [],
+            }
+
+    server._sessions["sid"] = _session(agent=_Agent())
+    monkeypatch.setattr(server.threading, "Thread", _ImmediateThread)
+    monkeypatch.setattr(server, "_emit", lambda *args, **kwargs: None)
+    monkeypatch.setattr(server, "make_stream_renderer", lambda cols: None)
+    monkeypatch.setattr(server, "render_message", lambda raw, cols: None)
+    monkeypatch.setattr(server, "_get_db", lambda: None)
+
+    with patch("agent.title_generator.maybe_auto_title") as mock_title:
+        server.handle_request(
+            {
+                "id": "1",
+                "method": "prompt.submit",
+                "params": {"session_id": "sid", "text": "Tell me about Rome"},
+            }
+        )
+
+    mock_title.assert_not_called()
+
+
+def test_prompt_submit_skips_auto_title_when_response_empty(monkeypatch):
+    """maybe_auto_title must NOT be called when the agent returns an empty reply."""
+
+    class _Agent:
+        def run_conversation(self, prompt, conversation_history=None, stream_callback=None):
+            return {
+                "final_response": "",
+                "messages": [],
+            }
+
+    server._sessions["sid"] = _session(agent=_Agent())
+    monkeypatch.setattr(server.threading, "Thread", _ImmediateThread)
+    monkeypatch.setattr(server, "_emit", lambda *args, **kwargs: None)
+    monkeypatch.setattr(server, "make_stream_renderer", lambda cols: None)
+    monkeypatch.setattr(server, "render_message", lambda raw, cols: None)
+    monkeypatch.setattr(server, "_get_db", lambda: None)
+
+    with patch("agent.title_generator.maybe_auto_title") as mock_title:
+        server.handle_request(
+            {
+                "id": "1",
+                "method": "prompt.submit",
+                "params": {"session_id": "sid", "text": "Tell me about Rome"},
+            }
+        )
+
+    mock_title.assert_not_called()