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David Snelling b7c6752388 feat: add stddev/variance aggregation ops with Welford's online algorithm ... - New aggregation ops: stddev and variance (incremental, O(1) per update) - Welford's online algorithm for numerically stable running variance - MetricState extended with m2 field for variance tracking - AggregationProvider interface: defineAggregate, removeAggregate, restoreState, serializeState - Export AggregateGroupState and MetricState types - Plugin docs: aggregation provider, analytics providers (HyperLogLog, t-digest, etc.) - Aggregation architecture and usage guide docs Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>		2026-02-17 17:04:11 -08:00
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batch-operations.test.ts	feat: Brainy 3.0 - Production-ready Triple Intelligence database	2025-09-11 16:23:32 -07:00
crud-operations-enhanced.test.ts	feat: Brainy 3.0 - Production-ready Triple Intelligence database	2025-09-11 16:23:32 -07:00
error-handling.test.ts	feat: Brainy 3.0 - Production-ready Triple Intelligence database	2025-09-11 16:23:32 -07:00
performance-benchmarks.test.ts	feat: add stddev/variance aggregation ops with Welford's online algorithm	2026-02-17 17:04:11 -08:00