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[laladwesh]

CodeAnt-AI Description

Add health endpoint, make export/preview timestamps use IST, and improve production container behavior

What Changed

• New GET /health endpoint returns service status, uptime, timestamp, and version for easy monitoring.
• All displayed and exported timestamps (table, export files, export preview) are converted to Indian Standard Time (IST) ISO strings so users and downloads show local IST times instead of UTC.
• Production container command increased Node memory and Docker Compose now restarts the service automatically; this reduces crashes due to memory limits and ensures the service is restarted on failure.
• Unexpected remote-user lookup errors are logged before being converted to internal errors, improving diagnosability.

Impact

✅ Health endpoint for uptime and monitoring
✅ Exports and previews show IST timestamps
✅ Automatic container restarts in production

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Sequence Diagram

This PR adds a /health endpoint and changes entry export/preview responses to convert timestamps to IST before returning/exporting. The diagram shows the health check fast path and the core export/preview flow (DB read -> convert times -> respond).

sequenceDiagram
    participant Client
    participant API
    participant Backend
    participant Database

    Client->>API: GET /health
    API-->>Client: 200 OK (status, uptime, version)

    Client->>API: POST /entries/export-preview (filter/page)
    API->>Database: Query entries (filter, sort, paginate)
    Database-->>Backend: Raw entry documents (ISO timestamps)
    Backend->>Backend: Convert timestamps to IST (toISTISOString)
    Backend-->>API: Prepared rows (IST times / XLSX buffer)
    API-->>Client: 200 OK (JSON preview or XLSX file)

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Nitpicks 🔍

🔒 No security issues identified

⚡ Recommended areas for review Container runtime privileges The Dockerfile does not create or switch to a non-root user. Running Node as root inside the container is a security concern; consider creating a non-root user and setting appropriate ownership of application files. Sensitive logging The code logs the full error object and response data to stdout. That can leak sensitive information (tokens, PII, internal error details) to logs and should be replaced with structured/sanitized logging or removed in production. Missing e.response guard The code assumes e.response always exists and immediately uses res.status and res.data. If e.response is undefined (network error, timeout), this will throw a runtime error and obscure the original failure. Entrypoint change The Dockerfile replaces the previous npm run start with a direct node ... app.js invocation. This can bypass package.json start script behavior (prestart hooks, environment preparations, or build/start wrappers like ts-node, pm2, or transpiled output paths). Verify that app.js exists in the image root and that invoking it directly preserves expected runtime behavior from package.json. Unprotected health route The health endpoint is publicly available and returns operational details. For production it is recommended to rate-limit, restrict by IP or require a token (or at least return a minimal payload) to avoid abuse and reduce info leakage.

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