- Fixed proxySchemaImage to detect Opel catalogs and use downloadOpelSchemaImage
- Opel requires a server-generated 'signature' parameter for image tickets
- Extract signed ticket URL from parts page HTML (imageViewerParamsUrl)
- Use extracted signature to get valid image ticket from PL24
- Schema images now return actual PNG instead of HTML
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>