feat: Add user authentication with Laravel Breeze

[MujahidAbbas]

Summary

• Add complete user authentication using Laravel Breeze with Livewire stack
• Replace all hardcoded user_id = 1 with auth()->id() across the codebase
• Protect all project routes with auth middleware
• Add authorization checks to all Livewire components using ProjectPolicy

Features

• Login/Registration: Full authentication flow with Breeze
• Password Reset: Email-based password recovery
• Profile Management: Update profile info and delete account
• Route Protection: All project routes require authentication
• Authorization: Projects are scoped to their owners
• User Menu: Sidebar displays user info with logout button

Technical Changes

• Installed Laravel Breeze with Livewire stack
• Added AuthorizesRequests trait to base Controller
• Added authorization checks to: Prd, Tech, KanbanBoard, Export, SettingsModal components
• Updated routes/web.php with auth middleware group
• Welcome page redirects based on auth status

Testing

All 43 tests pass including new auth tests.