Update version to 8.1.8 - Sonarr state management and modular architecture improvements

- Added complete state management functionality to Sonarr
- Implemented modular JavaScript architecture for all apps
- Fixed connection testing and instance management
- Reduced settings_forms.js from 4,530 lines to 385 lines (90% reduction)
- Created individual app modules: sonarr.js, radarr.js, lidarr.js, readarr.js, whisparr.js, eros.js, swaparr.js
- Fixed JavaScript syntax errors and form validation issues
- Improved add instance functionality across all apps
- Enhanced debugging and error handling

Author: Admin9705

version.txt

@@ -1 +1 @@
-8.1.7
+8.1.8