JamesFlare1212 f21a400c82 fix(auth): prevent cookie loss during remote server timeout storms ...

Server timeouts caused orphaned fetchActivityData calls to fire clearCookieCache()
asynchronously, destroying cookies for all concurrent callers. Three fixes:

1. Replace Promise.race timeout with AbortController to properly cancel
   orphaned fetches and prevent delayed clearCookieCache() calls
2. Add cookie backup/restore — backupCookies() before clearCookieCache(),
   restoreCookieBackup() if re-login fails, so cookies are never lost
3. Add 15s auth failure throttle to block thundering herd re-logins when
   server slowdowns generate many 500 errors simultaneously

2026-04-23 03:06:15 -04:00

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