generated from coulomb/repo-seed
Fixes C-2 (invalidation). Per-binding modes (event-driven push / validator poll / TTL), hybrid default, operational-envelope coupling (rate-limited shards must not poll-per-read), single-flight coalescing + batched bulk invalidation, freshness always represented in the provenance envelope. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>