feat: Add comprehensive kanban board functionality with drag-and-drop task management

[CodeGuideDev]

Summary

• ✅ Complete kanban board implementation with drag-and-drop functionality
• ✅ CRUD operations for task management (create, read, update, delete)
• ✅ Responsive design with mobile support
• ✅ Integration with existing dashboard navigation

Features Implemented

🎯 Core Kanban Functionality

• Data Model: TypeScript interfaces for Board, Column, and Task entities
• Sample Data: Enhanced data.json with realistic kanban board containing 3 columns and 8 sample tasks
• State Management: Custom useKanbanState hook for comprehensive task operations

🖱️ Drag & Drop Experience

• HTML5 Drag API: Smooth drag-and-drop with visual feedback
• Drop Zones: Highlighted areas with animations and visual cues
• Task Movement: Seamless task status updates when moved between columns
• Edge Cases: Proper handling of invalid drops and same-column drops

🎨 UI Components

• KanbanBoard: Main container with board header and column layout
• KanbanColumn: Individual columns with task count and add task functionality
• TaskCard: Interactive task cards with priority badges, assignee avatars, and action menus
• TaskModal: Full-featured form for creating and editing tasks with validation

✨ Task Management Features

• Create Tasks: Modal form with title, description, priority, assignee, and due date
• Edit Tasks: In-place editing with pre-populated form data
• Delete Tasks: Confirmation dialog for safe task deletion
• Form Validation: Client-side validation with error messages
• Priority System: Visual priority badges (low, medium, high)
• Assignee Support: Avatar display with initials for team members
• Due Dates: Date picker with past date validation

🧭 Navigation & Integration

• Dashboard Route: New /dashboard/kanban page with proper metadata
• Sidebar Navigation: Added Kanban Board link with kanban icon in main navigation
• Authentication: Follows existing auth patterns and layout structure
• Loading States: Skeleton screens and loading indicators
• Error Handling: User-friendly error messages and fallback states

📱 Responsive Design

• Mobile Support: Optimized layout for tablets and mobile devices
• Touch Interactions: Touch-friendly drag and drop on mobile
• Adaptive Columns: Responsive column widths and spacing
• Scrollable Layout: Horizontal scrolling for overflow columns

🎨 Design & Styling

• Theme Integration: Matches existing CodeGuide design system
• CSS Animations: Smooth transitions and hover effects
• Visual Feedback: Drag states, hover effects, and focus indicators
• Accessibility: Screen reader support and keyboard navigation
• Dark Mode: Proper styling for light and dark themes

Technical Implementation

File Structure

components/kanban/
├── KanbanBoard.tsx      # Main board container
├── KanbanColumn.tsx     # Column component
├── TaskCard.tsx         # Individual task cards
├── TaskModal.tsx        # Task creation/editing modal
├── kanban.css          # Component-specific styles
└── index.ts            # Component exports

app/dashboard/kanban/
├── page.tsx            # Kanban dashboard page
└── kanban.css          # Page-specific styles

hooks/
└── useKanbanState.ts   # State management hook

types/
└── kanban.ts           # TypeScript interfaces

Key Technologies

• React 18: Hooks, Context, and modern patterns
• TypeScript: Full type safety for kanban entities
• HTML5 Drag API: Native drag and drop implementation
• CSS Grid/Flexbox: Responsive layout system
• Tailwind CSS: Utility-first styling approach

Test plan

• Load kanban board and verify sample data displays correctly
• Test drag and drop functionality between all columns
• Create new tasks using the modal form
• Edit existing tasks and verify changes persist
• Delete tasks and confirm removal
• Test form validation for required fields and invalid dates
• Verify responsive design on mobile and tablet breakpoints
• Test navigation from sidebar to kanban page
• Verify loading states and error handling
• Test accessibility with keyboard navigation and screen readers

🤖 Generated with Claude Code