Massive update

drb-c2-core/app/routers/nodes.py

@@ -66,6 +66,19 @@ async def send_command(node_id: str, cmd: CommandPayload):
     return {"ok": True}
 
 
+@router.post("/{node_id}/reissue-key")
+async def reissue_node_key(node_id: str, _: dict = Depends(require_admin_token)):
+    """Generate a new API key for the node and push it via MQTT (retained).
+    Use this to rotate a key or recover a node whose key was lost."""
+    node = await fstore.doc_get("nodes", node_id)
+    if not node:
+        raise HTTPException(404, f"Node '{node_id}' not found.")
+    api_key = secrets.token_hex(32)
+    await fstore.doc_set("node_keys", node_id, {"node_id": node_id, "api_key": api_key}, merge=False)
+    mqtt_handler.publish_node_key(node_id, api_key)
+    return {"ok": True}
+
+
 @router.post("/{node_id}/config/{system_id}")
 async def assign_system(node_id: str, system_id: str):
     """