feat(workflow): add automated pull request triage

[Harxhit]

Summary

Adds an automated pull request triage workflow that classifies PRs based on the files modified, automatically applies area labels, and routes PRs to the appropriate reviewer. This helps streamline the review process and improves ownership visibility across the codebase.

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Type of Change

• Bug fix
• New feature
• Refactor (no functional change)
• UI / Design change
• Tests only
• Documentation
• Infrastructure / DevOps
• Security

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What Changed

• Added a GitHub Actions workflow that runs when a pull request is opened.

• Added automatic classification based on modified files.

• Detects changes across the following areas:

  • backend
  • web
  • mobile
  • devops

• Automatically applies one or more labels depending on the affected areas.

• Determines a primary review area for mixed-area pull requests.

• Automatically notifies the appropriate reviewer based on the primary review area.

• Posts a summary comment containing:

  • Applied labels
  • Primary review area
  • Assigned reviewer

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How to Test

1. Open a pull request containing changes in apps/backend.
2. Verify the backend label is applied.
3. Open a pull request containing changes in apps/web.
4. Verify the web label is applied.
5. Open a pull request containing changes across multiple areas.
6. Verify all relevant labels are applied.
7. Verify a primary review area is selected.
8. Verify the reviewer notification comment is posted.

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Checklist

• My code follows the project's coding style (npm run lint passes).
• TypeScript compiles without errors (npm run typecheck passes).
• I have added or updated tests for the changes I made.
• All tests pass locally (npm run test).

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Workflow Overview

Pull Request Opened
        │
        ▼
   Get Changed Files
        │
        ▼
 Detect Affected Areas
        │
        ├─ backend
        ├─ web
        ├─ mobile
        └─ devops
              │
              ▼
      Apply Labels
              │
              ▼
 Determine Primary Area
              │
              ▼
    Notify Reviewer

[vercel]

@Harxhit is attempting to deploy a commit to the Prashantkumar Khatri's projects Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions]

CI — All Checks Passed

Backend — SKIP

Check	Result
Lint	-
Test	-
Typecheck	-

Mobile — SKIP

Check	Result
Lint	-
Test	-

Web — SKIP

Check	Result
Check	-
Build	-

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Last updated: Tue, 09 Jun 2026 07:31:34 GMT

[Harxhit]

@ShantKhatri Please review this PR.

Also, could you take a quick look at the DevOps classification logic and let me know if any additional paths should be covered?

[ShantKhatri]

LGTM!