feat(activity): implement recent user activity feed

[Samm-05]

Summary

Implements the Recent User Activity feature by adding automatic activity tracking and a reusable activity feed integrated into the dashboard.

Changes

• Added activity schema for backend.
• Added reusable ActivityFeed frontend component.
• Integrated activity feed into the dashboard.
• Added frontend API support for activity endpoints.
• Restored automatic activity logging for:
  • User registration
  • Profile updates
  • Project creation
  • Project updates
  • Project archiving
  • Organization creation
  • Repository connection
  • User follow actions

Testing

Frontend

• npm run lint
• npm run build

Backend

• pytest

Manual

• Verified activity feed renders correctly.
• Verified activities are logged after successful operations.
• Verified no duplicate activity records are created.

Closes #<#116>

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[nensii21]

Thanks for the contribution. Some of the required CI checks is currently failing. Please take a look at the workflow logs, identify the cause, and push a fix. Once all required checks pass, I'll review and proceed with the PR.

[Samm-05]

Hi @nensii21,

Thank you for the feedback. I investigated the failing CI checks, resolved the issues on my branch, and pushed the fixes. The workflows have been re-triggered. Please let me know if any additional changes are required. Thank you!

[nensii21]

Do attach screenshots and videos showing what changes have been made.Thanks.Also CI jobs are failing check it out.