docs: update project docs for backoff, stale expiry, pool metrics

Add failure backoff and stale expiry sections to USAGE. Document pool=
field in metrics output. Update ROADMAP, TASKS, TODO with completed
items and remaining suggestions. Add metrics example to CHEATSHEET.
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user
2026-02-15 15:56:06 +01:00
parent 8aa384a80b
commit eddcc5f615
7 changed files with 36 additions and 3 deletions

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@@ -20,6 +20,9 @@
- [x] Connection metrics (periodic + shutdown logging)
- [x] Managed proxy pool (multi-source, health-tested, persistent)
- [x] Weighted proxy selection (prefer recently-tested proxies)
- [x] Per-proxy backoff (60s cooldown after connection failure)
- [x] Stale proxy expiry (evict dead proxies not seen for 3 refresh cycles)
- [x] Pool stats in periodic metrics log (`pool=alive/total`)
## Next
- [ ] Integration tests with mock proxy server