Consolidate subscription usage policy enforcement, privacy-safe persistence, and gateway security hardening into one reviewable change.
Includes bounded HTTP and execution envelopes, header and protocol guards, DNS and relay validation, authentication and secret projection hardening, secure backup/install paths, and regression coverage.
Retry pre-response transport failures across candidates with an explicit stop policy, and propagate end-to-end timing into usage records and UI diagnostics.
Remove legacy body, import, cookie, PII, and tunnel replay caps while preserving optional operator-configured gateway limits.
Refresh the resolved user role without bypassing owner group and key policies. Resolve Rust 1.95 Clippy failures and make the pending persistence bound test scheduler-independent.
Shard and singleflight hot-path caches, batch and prioritize candidate and usage lifecycle persistence, and extend database and pressure-test instrumentation for 20k concurrent streams.
Add end-to-end terminal admission, bounded database fallback, and observable overload handling. Preserve first-byte lifecycle state across asynchronous runtime and frontend updates.