Kay Kayyali
78bdee686f
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Adds the performance metrics endpoint and React Query hooks for the dashboard. Backend: - PerformanceResponse / PhaseMetrics / ProjectMetrics in api_schemas.py - GET /v1/performance?days=N returns aggregated metrics from cost_ledger (avg request time, p95, avg tokens, avg cost) and events_outbox (stage progression timing, per-project failure rates) - Verified working: 140 requests / 47 failures (33.6%), spec p95 9409s, build p95 3374s, mindmaps 26.8% failure rate Frontend: - usePerformance() hook with TypeScript interfaces - Ready for widget creation (PerfPhaseTable, PerfStageProgression, PerfFailureRates, PerfTokenSparkline) — pending UI build Build/test infra: - Dockerfile and docker-compose.yml updates for the perf schema