Root cause: Storage type detection at setupIndex() relied on
this.config.storage.type which was never set after createStorage()
auto-detected the storage type. This caused cloud storage to use
'immediate' persistence mode instead of 'deferred', resulting in
20-30 GCS writes per add() operation (7-12 seconds instead of 50-200ms).
Fix: Added getStorageType() helper that detects storage type from
the storage instance class name (e.g., GcsStorage → 'gcs'), used as
fallback when config.storage.type is not explicitly set.
Also added:
- Performance regression tests (10 new tests)
- test:perf npm script for running performance tests
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
