incident: SFTPGo outage 2026-09-02 — CT299 tailscaled death + stale lxc-attach recovery
- New incident page documenting CT299 SFTPGo outage (02:18 AWST)
- Root cause: swap exhaustion (43Gi, 100%) killed tailscaled; 5 stale lxc-attach PIDs blocked pct start
- Resolution: killed PIDs 3037951/3334928/3352203/3402511/4004148, pct stop/start 299
- Updated current-state.md with Recent Changes (2026-09-02), bumped updated to 2026-09-04
- Updated log.md with incident entry
- Updated index.md last-updated date
No secrets written. Verified end-to-end: tailscale direct, SFTPGo WebAdmin HTTP 401, SFTP banner SSH-2.0-SFTPGo_2.7.0.
Tony0410
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