fix(token): cancel background save before admin lock to prevent timeout

perf(ts): reduce hot-path D1 roundtrips from 17 to 5 per request

perf(admin): batch token deletion in single sync instead of chunked loop

feat(dependencies): add pytest as a development dependency

perf(token): replace exclusive reservation with per-token concurrent inflight map

feat: add zstd/gzip response compression and force-active on token refresh

perf: reduce MySQL startup roundtrips and defer hot-path I/O

perf(storage): batch SQL operations and make pool configurable

fix(storage): make mysql schema compatible with utf8mb4 key limits

fix: mark 403 tokens as disabled to prevent auto-recovery

perf: optimize prompt token counting and flush lifecycle

refactor: simplify grok middleware and token flow

refactor: remove auto-register feature and dead code

fix: default chat completions to non-stream when stream omitted

perf: shared HTTP session pool, async token counting, batched stats flush, and sync dedup