v0.8.5

feat(edge-loop): v0.8.5 — closed-loop edge intelligence + RE findings

- ws-metrics: per-connection up/down bytes + duration (WeakMap, zero-cost)
- edge-telemetry: traffic aggregation in KV + human units (↓GB/↑MB)
- WS samples now recorded at close (1 sample = full connection with traffic)
- edge-tuner: RTT-spike detection (EMA baseline, anti-contamination) →
  auto-trigger ProxyIP/CleanIP tuners + Telegram alert (6h/12h cooldowns)
- automation: edge-tuner in every */30 tick
- RE finding: HTTPUpgrade variants tested → server gate 101s them, but
  Xray 26.x deprecated+broken client-side ('migrate to XHTTP') → removed
  from sub before shipping dead profiles; real future path = XHTTP+DO
- tests: 391/391 green (19 new edge-loop tests); 398.4KB raw / 137.2KB gzip