Fix Issue #18: Community settings now match admin panel configuration

## Problem Fixed:
Community selection in settings was using hardcoded list that didn't match the actual enabled communities in the admin panel's collection_targets configuration.

## Root Cause:
The settings_communities() function had a hardcoded list of only 6 communities, while platform_config.json defines many more communities and collection_targets specifies which ones are actually enabled.

## Solution:
- **Dynamic community loading** - Reads from platform_config.json instead of hardcoded list
- **Collection target filtering** - Only shows communities that are in collection_targets (actually being crawled)
- **Complete community data** - Includes display_name, icon, and description from platform config
- **Platform consistency** - Ensures settings match what's configured in admin panel

The community settings now perfectly reflect what's enabled in the admin panel\!

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

migrate_bookmarks.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+"""
+Migration script to create the bookmarks table.
+"""
+
+import os
+import sys
+from database import init_db
+from flask import Flask
+
+# Add the current directory to Python path
+sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
+
+def create_app():
+    """Create minimal Flask app for migration"""
+    app = Flask(__name__)
+    app.config['SECRET_KEY'] = 'migration-secret'
+    return app
+
+def main():
+    """Run the migration"""
+    print("Creating bookmarks table...")
+    
+    app = create_app()
+    
+    with app.app_context():
+        # Initialize database
+        db = init_db(app)
+        
+        # Import models to register them
+        from models import User, Session, PollSource, PollLog, Bookmark
+        
+        # Create all tables (will only create missing ones)
+        db.create_all()
+        
+        print("✓ Bookmarks table created successfully!")
+        print("Migration completed.")
+
+if __name__ == '__main__':
+    main()