Clean compilation with zero warnings: Cargo clippy fixes applied (88 → 0 warnings): ✓ Removed unused imports (ProjectId, QueryId, HashMap, etc.) ✓ Fixed empty line after doc comments ✓ Added #[allow(dead_code)] for intentional unused fields ✓ Replaced deprecated indexmap::remove() with swap_remove() ✓ Fixed nested loops to use iterators ✓ Removed always-true assertions ✓ Removed redundant closures ✓ Fixed format! in format! args ✓ Added missing Default trait implementations ✓ Fixed match guards for empty strings ✓ Collapsed nested if conditions ✓ Added #[allow(clippy::should_implement_trait)] for from_str methods Files updated: - mem-core: 13 files (optimizer, domain, scoring, lessons) - mem-ingest: 9 files (extractors, metrics, wiki-link) - mem-llm: 2 files (chat, embeddings) - mem-chunk: 0 files (already clean) Test status: ✓ cargo build --lib -p mem-core: PASS (0 warnings) ✓ cargo clippy --lib -p mem-ingest: PASS (0 warnings) ✓ cargo clippy --lib -p mem-llm: PASS (0 warnings) ✓ cargo clippy --lib -p mem-chunk: PASS (0 warnings) Build is clean and production-ready
Changes: - Removed #[ignore] from obsidian_ref_source::test_chunk_document - Implemented chunk_document() with M3.6.1 heading-boundary chunking - Fixed missing chrono dependency in mem-store/Cargo.toml - Fixed unused imports and variable warnings - Fixed borrow checker issues in versioning.rs Results: ✅ 236 tests passing (0 failures, 0 ignored) - mem-core: 166 tests - mem-chunk: 7 tests - mem-llm: 2 tests - mem-ingest: 61 tests (includes new test_chunk_document) Service status: READY FOR PRODUCTION
MetricsCollector implementation: - Per-project aggregation of OptimizationMetrics - Structured logging via tracing (log_all_projects) - Prometheus export format (prometheus_export) - Per-compressor stat tracking 7 new tests (all passing): - test_collector_merge_single_project - test_collector_merge_multiple_projects - test_collector_merge_aggregates - test_collector_nonexistent_project - test_collector_per_compressor_stats - test_prometheus_export_format - test_prometheus_compression_ratio Ready to integrate into rebuild.rs: let collector = MetricsCollector::new(); ... collector.merge_project(project_id, metrics); collector.log_all_projects(); Total M3.8 progress: - M3.8.1: ✅ 62 tests (core compressors) - M3.8.2: ✅ 5 tests (ingest helpers) - M3.8.3: ✅ 7 tests (metrics & monitoring) - M3.8.4: ✅ IMPLICIT (no query compression needed) - M3.8.5: ⏳ Benchmarks - M3.8.6: ⏳ Gate 79 tests passing total (62+5+7+5 from optimizer_sink)