Dashboard frontend refactor: student profile modularization, notifications upgrade, and database pages

[Agrawal-Sujal]

Summary

This PR modernizes the dashboard frontend with reusable profile components, improved notification workflows, and new database-facing pages for issues, feedback, and search.
It also updates route integration, auth checks, and navigation wiring to support the full dashboard flow.

Key Features Delivered

1. Student Profile Refactor

• Broke profile experience into reusable common, form, and table components
• Improved maintainability and consistency for profile sections:
  • Education
  • Courses
  • Skills
  • Achievements
  • Work/Internship/Projects-related data views

2. Dashboard Notifications Enhancement

• Notification flow cleanup and UI improvements
• Added dedicated notification service integration for cleaner API usage

3. Database Module Pages

• Added dedicated pages for:
  • Feedback
  • Issues
  • Search
• Improved database module navigation and rendering flow

4. Integration Updates

• Updated dashboard routes
• Updated sidebar and header behavior for module visibility and navigation
• Updated auth validation and user state wiring for dashboard module access

5. Documentation

• Added notification enhancement scope documentation
• Added role-permission matrix documentation

Technical Impact

• 43 files changed
• 2486 insertions
• 1089 deletions

Validation

• Verified dashboard route integration and module navigation
• Verified profile component behavior after modular split
• Verified notification interactions with service layer
• Verified database pages render and connect correctly in dashboard flow

Checklist

• New pages/components integrated
• Route updates completed
• Shared/reusable component structure introduced
• Documentation updated
• Final UI QA/UAT sign-off