Function handle_wire_message 

pub fn handle_wire_message(
    msg: WireMessage,
    store: &SnapshotStore,
    cache: &mut RemoteBlobCache,
) -> WireMessage

Handle a WireMessage by dispatching to the appropriate handler.

V1 messages (BlobNegotiation, Call, CallResponse, Sidecar) are fully handled. V2 messages (Execute, Validate, Auth, Ping, file/project operations) return stub error responses until the execution server is implemented.