fix(network): prevent null multiplayer peer crashes offline/teardown and fix Nakama RPC session validation

addons/godot_ai/utils/mcp_client_refresh_state.gd

@@ -57,6 +57,14 @@ static func has_worker_alive(state: int) -> bool:
 	return state == RUNNING or state == RUNNING_TIMED_OUT
 
 
+## True while the status worker is still within its healthy budget. Once a
+## refresh has timed out, the dock keeps the warning badge but must let users
+## retry Configure / Configure all instead of stranding the controls behind an
+## orphaned, uninterruptible worker.
+static func should_disable_client_actions(state: int) -> bool:
+	return state == RUNNING
+
+
 ## True when the dock should reject new refresh spawns. Used by the
 ## focus-in / manual button / cooldown-timer entrypoints.
 static func is_blocked_for_spawn(state: int) -> bool: