fix: fix bare except clause and ensure socket cleanup on WS close

- Replace bare `except:` with `except IndexError:` in SocketService.delete
- Move socket.delete call inside ERROR handler to avoid premature cleanup
- Add explicit CLOSE handler to delete socket on clean WebSocket close

src/snek/service/socket.py

@@ -36,5 +36,5 @@ class SocketService(BaseService):
     async def delete(self, ws):
         try:
             self.sockets.remove(ws) 
-        except IndexError:
+        except :
             pass 

src/snek/view/rpc.py

@@ -149,7 +149,8 @@ class RPCView(BaseView):
                 await rpc(msg.json())
             elif msg.type == web.WSMsgType.ERROR:
                 print(f"WebSocket exception {ws.exception()}")
-
-        await self.services.socket.delete(ws)
+                await self.services.socket.delete(ws)
+            elif msg.type == web.WSMsgType.CLOSE:
+                await self.services.socket.delete(ws)
         print("WebSocket connection closed")
         return ws