stringadmin 160552b45e fix(ecommerce): 502 bug - vision model upgrade + MIME normalization + fallback
- Upgrade VISION_MODEL to qwen3.7-plus (latest, confirmed working with image_url)
- Add VISION_FALLBACK_MODEL = qwen-vl-plus for retry on "image format" errors
- Normalize upload MIME types: unsupported formats (HEIC/AVIF) fall back to image/png
  to prevent server saving as .bin which DashScope can't read
- Server-side: add image/avif, image/heic, image/heif to MIME_EXTENSIONS

Root cause: DashScope returned "image format is illegal" when uploaded images
had unrecognized MIME types → saved as .bin → DashScope couldn't decode.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-06-02 15:20:23 +08:00
2026-06-02 12:38:01 +08:00
2026-06-02 12:38:01 +08:00
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