fix: fall back to settings defaults on DB error, add missing identity-line system-prompt test

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V57jSQPqwkGG8BuAXg59X5

Claude outputs/main.py

@@ -1066,7 +1066,11 @@ MAX_TOOL_ROUNDS = 5
 
 
 async def _identity_system_prompt() -> str:
+    try:
         settings = await get_all_settings()
+    except Exception as e:
+        logger.warning(f"Settings unavailable, using defaults: {e}")
+        settings = SETTINGS_DEFAULTS
     return (
         f"Du bist {settings['assistant_name']}, der KI-Assistent von "
         f"{settings['company_name']}. Bei Fragen zur Erreichbarkeit kannst "

Claude outputs/tests/test_chat_tools.py

@@ -177,3 +177,22 @@ async def test_run_chat_completion_includes_current_datetime_in_system_prompt():
 
     _, kwargs = main.claude_client.messages.create.call_args
     assert "TESTMARKER" in kwargs["system"]
+
+
+@pytest.mark.asyncio
+async def test_run_chat_completion_includes_identity_prompt_in_system_prompt():
+    completion = MagicMock()
+    completion.stop_reason = "end_turn"
+    completion.content = [_text_block("Hallo!")]
+    completion.usage = _usage(10, 5)
+
+    main.claude_client = MagicMock()
+    main.claude_client.messages.create.return_value = completion
+
+    with patch.object(main, "build_memory_context", new=AsyncMock(return_value="")), patch.object(
+        main, "_identity_system_prompt", new=AsyncMock(return_value="IDENTITYMARKER Du bist JARVIS.")
+    ):
+        await main.run_chat_completion([{"role": "user", "content": "Hi"}], conversation_id=1)
+
+    _, kwargs = main.claude_client.messages.create.call_args
+    assert "IDENTITYMARKER" in kwargs["system"]

Claude outputs/tests/test_settings.py

@@ -124,3 +124,15 @@ async def test_identity_system_prompt_uses_settings():
     assert "FRIDAY" in prompt
     assert "Stark Industries" in prompt
     assert "info@stark.example" in prompt
+
+
+@pytest.mark.asyncio
+async def test_identity_system_prompt_falls_back_to_defaults_on_db_error():
+    with patch.object(
+        main, "get_all_settings", new=AsyncMock(side_effect=RuntimeError("relation \"settings\" does not exist"))
+    ):
+        prompt = await main._identity_system_prompt()
+
+    assert main.SETTINGS_DEFAULTS["assistant_name"] in prompt
+    assert main.SETTINGS_DEFAULTS["company_name"] in prompt
+    assert main.SETTINGS_DEFAULTS["contact_email"] in prompt