Sentry SDK integration + enriched health check

[PierreBrisorgueil]

Phase 5 — Logging & Monitoring (3/3)

What

• Add @sentry/node dependency
• New lib/services/sentry.js — init function, exports Sentry error handler
• Mount Sentry error handler after routes in express.js
• Enrich existing /api/health endpoint: DB status, uptime, version, memory usage
• Config-driven: no-op when DSN is empty

Config

sentry: { dsn: '', environment: 'development', enabled: false }

Acceptance

• Sentry captures unhandled exceptions and request errors
• Sentry requestHandler adds context (user, tags)
• Health endpoint returns { status, db, uptime, version, memory }
• No-op when sentry.enabled: false or DSN empty