Add comprehensive documentation

Created detailed README with feature list, installation guide, and architecture overview.

README_FORUM.md

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+# Reddit-Like Community Forum
+
+A full-featured community forum built with Laravel, inspired by Reddit.
+
+## Features
+
+- User authentication (registration, login, logout)
+- Community creation and management
+- Post creation with multiple types (text, link, image)
+- Nested comment threading
+- Upvote/downvote system for posts and comments
+- User karma tracking
+- Community subscriptions
+- User profiles with activity history
+
+## Database Schema
+
+- **Users**: User accounts with karma scores
+- **Communities**: Subreddit-like communities
+- **Posts**: User-submitted content
+- **Comments**: Nested comments on posts
+- **Votes**: Upvotes and downvotes
+- **Community_User**: User subscriptions to communities
+
+## Routes
+
+- `/` - Home page with popular posts
+- `/register` - User registration
+- `/login` - User login
+- `/communities` - Browse all communities
+- `/r/{community}` - View community posts
+- `/posts/{post}` - View post details and comments
+- `/u/{user}` - View user profile
+
+## Tech Stack
+
+- Laravel 12
+- Tailwind CSS
+- Blade Templates
+- MySQL/SQLite
+
+## Installation
+
+1. Clone the repository
+2. Run `composer install`
+3. Copy `.env.example` to `.env`
+4. Generate application key: `php artisan key:generate`
+5. Run migrations: `php artisan migrate`
+6. Start the server: `php artisan serve`