Add memory graph data endpoint

src/dashboard/routes/memory.py

@@ -16,6 +16,40 @@ from timmy.memory_system import (
 router = APIRouter(prefix="/memory", tags=["memory"])
 
 
+@router.get("/graph_data")
+async def memory_graph_data():
+    """Return memory nodes and links for D3 visualization."""
+    from timmy.memory_system import get_connection
+    import json
+
+    nodes = []
+    links = []
+
+    with get_connection() as conn:
+        rows = conn.execute(
+            "SELECT id, content, memory_type, session_id, agent_id, embedding FROM memories ORDER BY created_at DESC LIMIT 100"
+        ).fetchall()
+
+        for row in rows:
+            nodes.append({
+                "id": row["id"],
+                "content": row["content"][:50] + "..." if len(row["content"]) > 50 else row["content"],
+                "type": row["memory_type"],
+                "session": row["session_id"],
+                "agent": row["agent_id"]
+            })
+
+        # Create links based on session_id
+        for i in range(len(nodes)):
+            for j in range(i + 1, len(nodes)):
+                if nodes[i]["session"] and nodes[i]["session"] == nodes[j]["session"]:
+                    links.append({"source": nodes[i]["id"], "target": nodes[j]["id"], "value": 1, "type": "session"})
+                elif nodes[i]["agent"] and nodes[i]["agent"] == nodes[j]["agent"]:
+                    links.append({"source": nodes[i]["id"], "target": nodes[j]["id"], "value": 0.5, "type": "agent"})
+
+    return {"nodes": nodes, "links": links}
+
+
 @router.get("", response_class=HTMLResponse)
 async def memory_page(
     request: Request,