fix: Container width setting now applies correctly + Rail Ads improvements
- Fix container width not applying: css-global-responsive.css now uses
CSS variable --roi-container-width instead of hardcoded values
- Add 8 Rail format options: slim-small (160x300), slim-medium (160x400),
slim-large (160x500), skyscraper (160x600), slim-xlarge (160x700),
wide-skyscraper (160x800), half-page (300x600), large-skyscraper (300x1050)
- Change rail_top_offset from text input to select with preset values
- Fix Rail Ads JavaScript positioning (moved after HTML, added retries)
- ThemeSettingsRenderer now always outputs CSS variables for layout
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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