feat: Improve UI/UX and add file explorer search functionality

[sarpit2907]

Summary

This pull request implements comprehensive UI/UX improvements and adds real-time file search functionality to the AnalySim project.

Changes Made

UI/UX Improvements

• Dashboard Component: Enhanced styling with consistent card design, hover effects, and better visual hierarchy
• Project Detail Page: Migrated from fixed width layout to responsive flexbox for improved mobile support
• CSV Data Browser: Redesigned control layout with better visual hierarchy and responsive stacking
• Form Styling: Added comprehensive validation states, focus indicators, and consistent input styling across all forms
• Bootstrap Overrides: Updated all Bootstrap components to follow the design token system with CSS custom properties
• Mobile Responsiveness: Improved responsiveness across all components with proper media query breakpoints

File Explorer Search Feature

• Implemented real-time search/filter functionality in the project file explorer
• Added case-insensitive file and folder name matching
• Created clear search functionality to reset the filter
• Optimized for handling large datasets with many files
• Includes accessible search interface with proper ARIA labels

Files Modified

• Dashboard components (4 files)
• Project detail and file explorer components (5 files)
• CSV data browser components (2 files)
• Global styles (2 files)
• And related configuration files

Technical Details

• 100% frontend implementation with no backend changes required
• Uses Angular getter pattern for efficient filtering
• Leverages existing design token system (CSS variables)
• Maintains backward compatibility with existing functionality

Testing

All changes have been implemented and are ready for review. The search feature works on already-loaded data with no additional API calls needed.

Closes #123