- Backend: ChatRequest.attachments; image files read as base64 data URLs (8MB cap) and passed to run/run_stream as image_urls; last user message converted to multimodal parts only on the LLM-bound copy (history stays text); vision whitelist (kimi-k3, gpt-4o, claude, etc.), non-vision models keep text/OCR path
- Frontend: send attachments metadata with chat body (also fixes attachment context never being sent — body now uses fullText); user bubble shows image thumbnails
renjianbo
8d9ddd3aa0