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fix: format PR description file to pass CI checks
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.github/PR_DESCRIPTION.md

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## Summary
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Implements a standardized health check system across all microservices to enable reliable monitoring, load balancing, and orchestration. This PR adds consistent health endpoints that can be consumed by Kubernetes liveness/readiness probes, API gateways, and monitoring systems.
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## Changes
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### New Package: `@scribemed/health`
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- Created reusable health check utilities package
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- Supports liveness, readiness, and comprehensive health checks
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- Database connectivity checks
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- Memory usage monitoring
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- Configurable health check handlers
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### Service Updates
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- **Transcription Service**: Added `/health`, `/health/live`, and `/health/ready` endpoints
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- **Documentation Service**: Added health endpoints with database connectivity checks
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- **Coding Service**: Added standardized health endpoints
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- All services return consistent JSON response format
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### Kubernetes Integration
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- Created deployment manifests for all services with liveness/readiness probes
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- Configured appropriate timeouts and thresholds
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- Added health check probes to staging environment
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### Testing
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- Unit tests for health package (9 tests, all passing)
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- Integration tests for service health endpoints
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- Updated existing service tests
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## Testing
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- [x] `pnpm lint` - All code passes linting
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- [x] `pnpm test` - All tests passing
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- Health package: 9/9 tests passing
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- Coding service: 5/5 tests passing
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- Transcription service: 4/4 tests passing
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- Documentation service: 4/4 tests passing
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- [x] `pnpm build` - All packages build successfully
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## Health Check Endpoints
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All services now expose three standardized endpoints:
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- **`GET /health/live`** - Liveness probe (always returns healthy if process is running)
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- **`GET /health/ready`** - Readiness probe (checks critical dependencies like database)
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- **`GET /health`** - Comprehensive health check (includes all checks + memory usage)
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### Response Format
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```json
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{
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"status": "healthy" | "degraded" | "unhealthy",
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"timestamp": "2024-01-01T00:00:00.000Z",
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"service": "service-name",
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"checks": {
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"database": {
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"status": "healthy",
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"responseTime": 5
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},
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"memory": {
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"status": "healthy",
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"heapUsedMB": 45.2,
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"heapUsagePercent": 45.2
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}
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}
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}
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```
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## Kubernetes Probes
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Example probe configuration:
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```yaml
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livenessProbe:
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httpGet:
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path: /health/live
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port: 8080
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initialDelaySeconds: 10
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periodSeconds: 10
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readinessProbe:
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httpGet:
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path: /health/ready
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port: 8080
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initialDelaySeconds: 5
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periodSeconds: 5
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```
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## Files Changed
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- **New Files:**
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- `packages/health/` - Complete health check package
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- `infrastructure/kubernetes/staging/*-service.yaml` - Service deployments with probes
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- `docs/issues/0005-health-check-system.md` - Issue documentation
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- `docs/issues/0006-health-check-enhancements.md` - Follow-up enhancements issue
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- **Modified Files:**
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- `services/*/package.json` - Added health package dependency
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- `services/*/src/server.js` - Integrated health endpoints
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- `services/*/tests/server.test.js` - Added health check tests
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## Related Issues
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- Closes #5
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- Related: #6 (follow-up enhancements identified during implementation)
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## Documentation
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- Health package README: `packages/health/README.md`
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- Issue documentation: `docs/issues/0005-health-check-system.md`
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- Follow-up enhancements: `docs/issues/0006-health-check-enhancements.md`
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## Next Steps
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After merge, consider implementing enhancements from issue #6:
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- Timeout management for health checks
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- Metrics integration (Prometheus)
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- Circuit breaker pattern
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- Health check result caching
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- Configuration flexibility

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