v1.0.4

Added

• Pasted/dropped images now feed straight into the vision tool without the
  external describe-image plugin: a new backend POST /dsh-free-vision/attach
  saves the image into the host attachment store and returns a durable Markdown
  ![图片](/dsh-free-vision/raw/<id>?ref=…) reference, and a new
  GET /dsh-free-vision/raw/<id> route streams those bytes back so the
  reference renders in the conversation.
• The client auto-rewrites outbound messages that carry an image into that text
  reference (wrapping conversation.sendSession), so pasting/sending an image
  bypasses the "current model does not support images" admissibility gate. The
  hook is dedup-guarded and wrapped in try/catch with a fallback so it can never
  break the settings page or an existing session.