[akcorca]

Cortex product collection performs unnecessary learning reads and stores repeated event fields; log lists also fetch full detail payloads, and partial export failures replay already completed Queue messages.

Skip per-owner reads when no learning references exist, expose a bounded analytics.eventList projection, compact track/goal payloads while reconstructing the existing detail contract, and acknowledge messages only after all their raw and dictionary rows export. Mixed storage versions and cursor/dedup semantics remain supported.

Validation: build, TypeScript, core (172 tests), Workers (117 tests including packed-message failure coverage), generated API docs, package consumer/dry-run checks, and maintenance unittest (3 tests) passed. Reproducible local benchmark: 100-user empty-reference SQL calls 205→106; sample pageview bytes 1093→808 and reference-goal bytes 1274→870; injected retry deliveries 14882→10000. These are synthetic counters/wire sizes, not production billing measurements.

Two independent parallel reviewers found no correctness issues. Added the suggested packed-message export-failure coverage and verified it. Schema-v2 writes require a compatible reader on rollback; deploy this runtime before Cortex adopts the new RPC.

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