feat: Add presence heartbeat for Matrix online status

- matrix-gateway: POST /internal/matrix/presence/online endpoint
- usePresenceHeartbeat hook with activity tracking
- Auto away after 5 min inactivity
- Offline on page close/visibility change
- Integrated in MatrixChatRoom component

services/living-map-service/adapters/agents_client.py

@@ -0,0 +1,61 @@
+"""
+Agents Service Client Adapter
+Phase 9: Living Map
+"""
+from typing import List, Dict, Any
+from .base_client import BaseServiceClient
+import os
+
+class AgentsClient(BaseServiceClient):
+    """Client for agents-service"""
+    
+    def __init__(self):
+        base_url = os.getenv("AGENTS_SERVICE_URL", "http://localhost:7014")
+        super().__init__(base_url)
+    
+    async def get_agents_list(self) -> List[Dict[str, Any]]:
+        """Get list of all agents"""
+        result = await self.get_with_fallback("/agents", fallback=[])
+        return result if isinstance(result, list) else []
+    
+    async def get_agent_metrics_summary(self) -> Dict[str, Any]:
+        """Get aggregated agent metrics"""
+        # This endpoint might not exist yet, use fallback
+        result = await self.get_with_fallback("/agents/metrics/summary", fallback={
+            "total_agents": 0,
+            "online_agents": 0,
+            "total_llm_calls_24h": 0,
+            "total_tokens_24h": 0
+        })
+        return result
+    
+    async def get_layer_data(self) -> Dict[str, Any]:
+        """Get agents layer data for Living Map"""
+        agents_list = await self.get_agents_list()
+        metrics_summary = await self.get_agent_metrics_summary()
+        
+        # Transform to Living Map format
+        items = []
+        for agent in agents_list:
+            items.append({
+                "id": agent.get("id", agent.get("external_id", "unknown")),
+                "name": agent.get("name", "Unknown Agent"),
+                "kind": agent.get("kind", "assistant"),
+                "microdao_id": agent.get("microdao_id"),
+                "status": "online" if agent.get("is_active") else "offline",
+                "usage": {
+                    "llm_calls_24h": 0,  # TODO: Get from usage-engine
+                    "tokens_24h": 0,
+                    "messages_24h": 0
+                },
+                "model": agent.get("model"),
+                "last_active": agent.get("updated_at")
+            })
+        
+        return {
+            "items": items,
+            "total_agents": len(items),
+            "online_agents": sum(1 for a in items if a["status"] == "online"),
+            "total_llm_calls_24h": metrics_summary.get("total_llm_calls_24h", 0)
+        }
+