feat: Implement Blog System

[bryanwills]

Phase 3: Blog System

Requirements

• Blog post creation and management
• Markdown support for content
• Categories and tags
• Search functionality
• RSS feed
• SEO optimization for blog posts

Technical Implementation

• Content management system
• Database schema for blog posts
• Admin interface for content creation
• Public blog listing and individual post pages
• Search and filtering capabilities

Acceptance Criteria

• Blog post creation and editing
• Markdown rendering
• Category and tag system
• Search functionality
• RSS feed generation
• SEO optimization
• Admin interface
• Public blog pages