feat: add Chinese UI, Responses models, and mirrored Windows setup

Localize the web console and persist custom model and capability settings.
Use OpenAI Responses exclusively and move runtime limits into environment configuration.
Bootstrap uv and the virtual environment on Windows, support optional China mirrors,
and package source distributions without environments, build output, or credentials.

Update regression tests and repository quality checks for the new behavior.

tests/tools/video_analyzer/test_video_analyzer_tools.py

@@ -37,43 +37,7 @@ async def test_video_analyzer_tools(artemis_context, mock_state, inputs_dir, tmp
     agent.blackboard_entries = []
     agent.sub_system_prompt = "You are a sub agent"
     agent.audio_system_prompt = "You are an audio sub agent"
-    agent.model_name = "gemini-3.7-flash"
-
-    # We must provide a valid FunctionDeclaration for the tool otherwise Pydantic will complain
-    from google.genai import types
-
-    agent.submit_answer_tool = types.FunctionDeclaration(
-        name="submit_answer",
-        description=("Submit the final findings for the requested segment analysis."),
-        parameters=types.Schema(
-            type=types.Type.OBJECT,
-            properties={
-                "summary": types.Schema(type=types.Type.STRING, description="summary"),
-                "analysis": types.Schema(type=types.Type.STRING, description="analysis"),
-                "timeline_events": types.Schema(
-                    type=types.Type.ARRAY,
-                    items=types.Schema(
-                        type=types.Type.OBJECT,
-                        properties={
-                            "start_time": types.Schema(type=types.Type.NUMBER),
-                            "end_time": types.Schema(type=types.Type.NUMBER),
-                            "transcription": types.Schema(type=types.Type.STRING),
-                            "confidence_score": types.Schema(type=types.Type.NUMBER),
-                            "verification_timestamp_secs": types.Schema(type=types.Type.NUMBER),
-                        },
-                    ),
-                ),
-            },
-        ),
-    )
-
-    import google.genai as genai
-    from artemis.config import settings
-
-    agent.client = genai.Client(
-        api_key=settings.GOOGLE_API_KEY.get_secret_value() if settings.GOOGLE_API_KEY else None
-    )
-    artemis_context._genai_client = agent.client
+    agent.model_name = "mimo-v2.6-flash"
 
     import shutil
     import uuid