[Enhancement] Error monitoring uses `console.error` only — no Sentry or structured error tracking

[RUKAYAT-CODER]

Overview

src/lib/errors/index.ts contains a TODO comment to replace console.error with a Sentry integration. In production, unhandled errors are only visible in server logs — there is no alerting, grouping, user-impact counting, or stack-trace deduplication. This makes incident response entirely reactive and manual.

Specifications

Features:

• Unhandled errors are reported to Sentry with full context (user ID, request path, environment)
• Repeated errors are deduplicated and grouped
• Critical errors trigger alerts

Tasks:

• Install @sentry/nextjs and run the Sentry wizard
• Configure Sentry DSN via SENTRY_DSN environment variable
• Replace console.error calls in src/lib/errors/index.ts with Sentry.captureException()
• Add user context: Sentry.setUser({ id: userId })
• Add sentry.server.config.ts and sentry.client.config.ts

Impacted Files:

• src/lib/errors/index.ts
• src/app/error.tsx
• src/app/global-error.tsx
• .env.example

Acceptance Criteria

• Errors captured by error.tsx appear in the Sentry dashboard
• SENTRY_DSN is documented in .env.example
• No console.error calls remain for exception tracking in production paths

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Congratulations, @Menjay7! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

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