Always-online: your saves live in the cloud

Signal Decay now requires a connection to play. Your character data lives on the server, and every session starts by loading your latest cloud save. Local storage acts as a fast cache so the game loads instantly, but the cloud is always authoritative.

If you had an offline save from before this change, it migrates automatically the first time you sign in. Your characters, your inventory, your progress — everything carries over. The old local-only key is cleaned up after migration.

Connection errors on the login screen now show a clear message with a retry button instead of silently failing. If the server is unreachable, you'll know immediately and can try again when your connection is stable.