Implement Pull Request Template for standardized SWoC '26 contributions #86

Task Description

As IssueMatch scales during Social Winter of Code 2026, we expect a high volume of contributions across our FastAPI backend and Next.js 15 frontend. Currently, PRs are submitted without a consistent structure, making it difficult for maintainers to:

1. Identify which part of the stack (AI/ML, Backend, or Frontend) is affected.
2. Verify if the FAISS vector search or MongoDB schemas have been tested.
3. Track SWoC '26 points for the leaderboard.

I propose adding a .github/pull_request_template.md to streamline the review process and ensure high code quality.

Goals

• Speed: Maintainers can review PRs faster when they know exactly what to look for.
• Fairness: Ensures all SWoC participants provide the same level of documentation for their points.
• Reliability: Prevents breaking the FAISS similarity search or GitHub API integration by requiring specific test confirmation.

Acceptance Criteria

• Create the .github/pull_request_template.md file.
• Include a section for GitHub OAuth and MongoDB environment verification.
• Add a "Definition of Done" checklist for SWoC contributors.
• Reference the CONTRIBUTING.md in the template footer.

Component

Documentation

Technical Details

No response

Resources

No response