Complete v0.6.0 documentation update and review

📚 Documentation Updates:
• Updated CHANGELOG.md with comprehensive v0.6.0 feature list
• Enhanced README.md with new TV processing endpoints and examples
• Updated SETUP.md with required Sonarr API key configuration
• Enhanced TESTING.md with v0.6.0 TV testing procedures
• Updated .env templates with proper Sonarr requirements

🔧 Configuration Updates:
• Mark SONARR_API_KEY as REQUIRED for v0.6.0+ Enhanced TV NFOs
• Updated version examples from 0.5.1 to 0.6.0
• Added JSON response examples for new TV endpoints
• Clarified URL-safe vs URL-encoded endpoint options

📋 Complete File Review:
• Verified all Python imports are consistent across modules
• Confirmed all typing imports (Dict, Any, List, Optional) are present
• Validated configuration templates match actual requirements
• Added comprehensive testing procedures for TV enhancements

✅ Ready for Production:
• All endpoints documented with examples
• Configuration requirements clearly specified
• Testing procedures comprehensive for troubleshooting
• Backward compatibility maintained throughout

.env.secrets.template

@@ -21,7 +21,7 @@ OMDB_API_KEY=your_omdb_api_key
 # Radarr API key (optional - for fallback only)
 RADARR_API_KEY=your_radarr_api_key
 
-# Sonarr API key (optional - for TV processing)
+# Sonarr API key (REQUIRED for v0.6.0+ Enhanced TV NFO Generation)
 SONARR_API_KEY=your_sonarr_api_key
 
 # Jellyseerr API key (optional)