feat(bots): Implement comprehensive bot system with autonomous posting, content management, and API endpoints

- Add bot management system with creation, suspension, and reinstatement functionality
- Implement autonomous bot posting with scheduling, rate limiting, and content generation
- Add content fetching system supporting RSS feeds and multiple content sources
- Implement LLM-based content generation with customizable bot personalities
- Add mention handling and automated response system for bot interactions
- Implement API key management with encryption using AUTH_SECRET for simplified deployment
- Add comprehensive bot logging system for activity tracking and error monitoring
- Create bot administration pages and settings UI for managing bot configurations
- Add database migrations for bot system schema including users, sources, and content items
- Implement cron job system for automated bot operations and scheduled tasks
- Add extensive test coverage with unit and property-based tests for core bot modules
- Simplify encryption by deriving keys from AUTH_SECRET instead of separate environment variable
- Implement automatic content fetching on post trigger with retry logic
- Add Reddit-specific link preview handling using oEmbed API for reliable metadata extraction
- Create utility scripts for bot inspection and cleanup operations
- Add comprehensive bot system documentation and improvement tracking

src/app/globals.css

@@ -357,6 +357,7 @@ a.btn-primary:visited {
   margin-bottom: 12px;
   border: 1px solid var(--border);
   background: #000;
+  z-index: 2;
 }
 
 .video-embed-container iframe {