Fix/streaks in home page and profile page

Description:

Fixes streak data handling on the frontend by ensuring the home page and own profile page fetch streaks from the detailed profile API instead of relying on /auth/me, which does not include streak fields. Also updates the profile contribution dashboard to use the backend-provided streak value for consistency.

Type of Change:

• Bug Fix
• Feature Development
• Documentation

Testing:

• Tested on desktop
• Tested on mobile
• Tested in different browsers

Screenshots (if applicable):

Video Demo

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Checklist:

• Code follows project style guidelines
• Self-review completed
• No console errors
• TypeScript types are correct

**Closes #313