v0.1.3

v0.1.3

Subscription self-service for end users, plus a dashboard CPU-reporting fix
and an ops-script papercut.

Added

• Human-readable subscription page. Opening /sub/<token> in a browser
  used to dump raw base64 (#1).
  It now serves a self-contained landing page: status (traffic / expiry /
  protocols), a copy-able subscription link, deep-link import buttons
  (Hiddify / Streisand / v2rayNG / Clash), and per-format download buttons
  including the AmneziaWG .conf. RU/EN by Accept-Language. VPN clients are
  unaffected (an explicit ?format= always wins).
• QR codes on the subscription page. One QR for the subscription URL
  (scan to import in proxy clients) and, when an AmneziaWG endpoint exists, a
  QR of the wg-quick config text (scan straight into AmneziaVPN). Generated
  server-side as inline SVG via qrcode-svg (zero external requests).

Fixed

• Dashboard CPU headline. The host CPU card showed a 200ms instantaneous
  sample taken while the backend builds the overview, so a 1-vCPU host saw
  its own work as an 80%+ spike. The headline now uses the 1-minute
  load-average percentage (sustained busy-ness); the sample stays as
  secondary detail.
• Ops scripts run from anywhere. deploy.sh / restore.sh / etc. errored
  when run from scripts/ instead of the project root. They now auto-resolve
  the root, so cd scripts && ./deploy.sh works too.

Performance

• Dashboard overview cache TTL 8s → 30s. At 8s the cache expired before
  almost every poll, so the ~20-query recompute ran every ~10s and pegged
  small hosts. Now throttled to at most twice a minute regardless of tab count.