M3.8.3 ✅ COMPLETE (7 tests) - MetricsCollector: per-project aggregation - Structured logging (tracing) - Prometheus export format M3.8.4 ✅ IMPLICIT (no work needed) - Query path already clean (no compression) - Only cache_metrics() uses optimizer (for observability) M3.8.5 ⏳ ACTIVE (16 tests spec'd) - Compression ratio benchmarks (5 tests: log/json/text/diff/mixed) - Search quality validation (8 tests: pgvector/opensearch/fusion) - Performance baseline (3 tests: latency/throughput/memory) M3.8.6 ⏳ PENDING (13 gate assertions) - Safety (6): no data loss, deterministic, structure preservation - Performance (4): latency p99 <3ms, throughput 1000+/sec, memory <100MB - Quality (3): compression targets, search improvement, cache accuracy Project progress: 64/78 complete (82%), 8/13 gates green Total M3.8 tests: 103 (62+5+7+0+16+13)
