Add warm start and chain pre-flight sections to USAGE. Mark both
features complete in ROADMAP and TASKS. Remove implemented items
from TODO. Update README, PROJECT, and CHEATSHEET.
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.
Add selection weight section to USAGE.md with decay formula and
reference table. Mark feature complete in ROADMAP and TASKS.
Update README and PROJECT descriptions.
Asyncio-based SOCKS5 server that tunnels connections through
configurable chains of SOCKS5, SOCKS4/4a, and HTTP CONNECT proxies.
Tor integration via standard SOCKS5 hop.