Add content_blocks to council_query for structured UI display

- Add content_blocks array to council_query return with model responses
  and synthesis result for rendering as UI cards
- Add MODEL_DISPLAY_NAMES mapping and get_display_name helper for
  user-friendly model names in the UI
- Update Python version to 3.13 for compatibility
- Refactor FastAPI endpoints for cleaner error handling

mcp_server/server.py

@@ -13,6 +13,39 @@ FASTAPI_URL = os.getenv("COUNCIL_FASTAPI_URL", "http://localhost:8001")
 # Create MCP server instance
 mcp = FastMCP("council")
 
+# Model display name mapping for human-readable names
+MODEL_DISPLAY_NAMES = {
+    "openai/gpt-4o": "GPT-4o",
+    "openai/gpt-4o-mini": "GPT-4o Mini",
+    "openai/gpt-4-turbo": "GPT-4 Turbo",
+    "openai/o1": "o1",
+    "openai/o1-mini": "o1 Mini",
+    "openai/o1-preview": "o1 Preview",
+    "anthropic/claude-3.5-sonnet": "Claude 3.5 Sonnet",
+    "anthropic/claude-3-opus": "Claude 3 Opus",
+    "anthropic/claude-3-haiku": "Claude 3 Haiku",
+    "google/gemini-pro": "Gemini Pro",
+    "google/gemini-pro-1.5": "Gemini Pro 1.5",
+    "google/gemini-2.0-flash-001": "Gemini 2.0 Flash",
+    "google/gemini-2.0-flash-thinking-exp": "Gemini 2.0 Flash Thinking",
+    "meta-llama/llama-3.1-405b-instruct": "Llama 3.1 405B",
+    "meta-llama/llama-3.1-70b-instruct": "Llama 3.1 70B",
+    "mistralai/mistral-large": "Mistral Large",
+    "deepseek/deepseek-chat": "DeepSeek Chat",
+    "deepseek/deepseek-r1": "DeepSeek R1",
+}
+
+
+def get_display_name(model_id: str) -> str:
+    """Get human-readable display name for a model ID."""
+    if model_id in MODEL_DISPLAY_NAMES:
+        return MODEL_DISPLAY_NAMES[model_id]
+    # Fallback: extract the model name from the ID
+    parts = model_id.split("/")
+    if len(parts) > 1:
+        return parts[-1].replace("-", " ").title()
+    return model_id
+
 # HTTP client for FastAPI communication
 _http_client: httpx.AsyncClient | None = None
 
@@ -83,6 +116,7 @@ async def council_query(
     Returns:
         Complete council response with all 3 stages and metadata including:
         - conversation_id: The conversation ID used
+        - content_blocks: Structured blocks for each model response (for UI rendering)
         - stage1: Individual model responses
         - stage2: Peer rankings with aggregate scores
         - stage3: Chairman's synthesized final answer
@@ -100,8 +134,35 @@ async def council_query(
         {"content": query}
     )
 
+    # Build content_blocks for structured UI rendering
+    content_blocks = []
+
+    # Add Stage 1 responses as individual blocks
+    stage1_results = result.get("stage1", [])
+    for resp in stage1_results:
+        model_id = resp.get("model", "unknown")
+        content_blocks.append({
+            "type": "council_response",
+            "model": model_id,
+            "model_display_name": get_display_name(model_id),
+            "response": resp.get("response", ""),
+            "stage": 1
+        })
+
+    # Add Stage 3 synthesis block
+    stage3_result = result.get("stage3", {})
+    if stage3_result:
+        model_id = stage3_result.get("model", "unknown")
+        content_blocks.append({
+            "type": "council_synthesis",
+            "model": model_id,
+            "model_display_name": get_display_name(model_id),
+            "response": stage3_result.get("response", "")
+        })
+
     return {
         "conversation_id": conversation_id,
+        "content_blocks": content_blocks,
         **result
     }