fix(status): any Lotus device clears an auto-expiring status, not just the one that set it (#300)

"Clear after 1 hour" lived in that device's localStorage, so a status
set on a laptop that was then closed stayed on the server until the
laptop opened Lotus again. The expiry is now also kept in account data
(io.lotus.status_expiry: { status_msg, expires_at }). Every device's
StatusExpiryMonitor clears the status when due, but only if it is still
the one that was set to expire (otherwise it just forgets the expiry).

Fixes #300

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

src/types/matrix/accountData.ts

@@ -26,6 +26,10 @@ export enum AccountDataEvent {
   // [Gitea #104] Synced subset of the Lotus Settings object (utils/settingsSync).
   LotusSettings = 'io.lotus.settings',
 
+  // [Gitea #300] When the status message auto-clears: { status_msg, expires_at },
+  // so any Lotus device can clear it (not only the one that set it).
+  LotusStatusExpiry = 'io.lotus.status_expiry',
+
   SecretStorageDefaultKey = 'm.secret_storage.default_key',
 
   CrossSigningMaster = 'm.cross_signing.master',