Claude Desktop repeatedly re-archives sessions in bursts, ignoring ccAutoArchiveOnPrClose: false

After setting ccAutoArchiveOnPrClose: false in claude_desktop_config.json (and restarting the app), Claude Desktop continues to mass-set isArchived: true on ~470-480 previously-restored sessions in recurring bursts (~5min apart during active bursts, 103 events over 24h). Data itself is untouched — only the isArchived flag flips — but it happens repeatedly even right after a full app restart, suggesting the flag isn't honored by whatever internal process re-archives sessions (possibly tied to closing a project/session, given the flag name). Workaround in place: an external watchdog restores the flag every 2 minutes.