feat: metrics collection and memory snapshots#20
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- MetricsCollector singleton tracks search/index latency, work memory, consolidation, and feedback event counts with reset support - SnapshotStore copies work memory, context graph, and feedback JSON into timestamped snapshot directories; auto-creates safety backup before any restore - Engine instrumented with try/catch latency recording on search and reindex; all write operations record the appropriate metric - HTTP routes: GET/POST /metrics, POST /metrics/reset, CRUD /snapshots, POST /snapshots/:id/restore - MCP tools: create_snapshot, list_snapshots, restore_snapshot - Test suites: MetricsCollector (14 assertions), SnapshotStore (12 assertions) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
MetricsCollectorsingleton (search/index latency, work memory, consolidation, feedback counts) withreset()supportSnapshotStorefor creating, listing, restoring, and deleting timestamped memory snapshots; auto-creates a safety backup before any restoreMemoryEnginewith try/catch latency recording onsearch()andreindex(); all write methods record the appropriate metricGET /metrics,POST /metrics/reset, CRUD/snapshots,POST /snapshots/:id/restore) and MCP (create_snapshot,list_snapshots,restore_snapshot)Test plan
MetricsCollectorunit tests (counts, latency, errors, reset)SnapshotStoreunit tests (create, list ordering, get, restore, delete, missing-file handling)npm run typecheckexits 0Closes #10
Closes #11
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