Refactor README to remove deprecated content

[Rishita-Chouksey]

Removed outdated sections and improved clarity in the README.

Pull Request

🔗 Related Issue

Closes #636

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📝 Summary of Changes

I updated the Current Caveats section and deleted duplicate items in readme.md

🏷️ Type of Change

• ♻️ Refactor
• 📝 Documentation update

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✅ Checklist

• No merge conflicts
• Changes follow the project guidelines
• Documentation updated

Summary by CodeRabbit

• Documentation
  • Updated the README’s caveats section to better reflect the current state of the app and environment setup.
  • Clarified that the example backend environment file documents only a subset of available settings.
  • Refined notes about remaining scaffold paths and MVP-level endpoints.
  • Adjusted the Contributors section spacing and layout for consistency.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 2beae7aa-f733-4ea0-877c-f93ff60dce81

📥 Commits

Reviewing files that changed from the base of the PR and between 4a33158 and d5c441e.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Walkthrough

README.md's Current Caveats section is updated to reflect current codebase state, noting the incomplete .env.example file and removing resolved caveats about Gemini API key persistence, danger-zone buttons, and analytics scoping. Contributors section formatting is also adjusted.

Changes

README documentation update

Layer / File(s)	Summary
Update Current Caveats and Contributors formatting README.md	Caveat bullets rewritten to note backend/.env.example only documents DEBUG/SECRET_KEY, retain scaffold-code notes, and remove resolved caveats about Gemini API key persistence, danger-zone buttons, and unscoped analytics queries; Contributors section spacing adjusted.

Estimated code review effort: 1 (Trivial) | ~3 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the README cleanup and removal of outdated content described in the changes.
Linked Issues check	✅ Passed	The README cleanup aligns with #636 by removing stale caveats and eliminating duplicated content in the file.
Out of Scope Changes check	✅ Passed	The only extra edit is minor Contributors spacing, which stays within the README cleanup scope.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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