* fix(app): attach dropped files in composer
Composer parents had to expose attachment callbacks, so New Workspace only wired image drops and JSON files never became file attachments. Centralize dropped-file ingestion in Composer so all composer surfaces share the same image and file path.
* fix(app): handle desktop dropped attachment paths
* fix(attachments): allow Markdown file uploads on desktop
Desktop file upload copied picked files through managed storage with bare picker extensions like md. Normalize those extensions at the command boundary and pass dot-prefixed extensions from the picker path.
* fix(attachments): stop enumerating generic file types
Generic file uploads should not depend on a hand-maintained non-image MIME table. Keep raster image inference for image handling and use octet-stream for other path-only uploads.
* test(attachments): cover picker extension format
Attachment pills were drawn by four separate style sets, so files,
images, GitHub items, and reviews rendered at different heights in the
same tray. Move the frame, the two-line label, and the image thumbnail
into shared components so every attachment lines up at one height,
across both the composer and sent messages.
Sent-message images now open the lightbox, and file uploads work on
iOS and Android via expo-document-picker instead of being gated to
desktop.
- Desktop web: drag-and-drop non-image files onto the chat pane to upload
- Desktop web: file picker option in the composer attachment sheet
- Uploaded files are sent to the LLM as filename references in a tmp directory
- New useFilePicker hook for cross-platform file picking
- Extended useFileDropZone to support generic file drops
- Added UploadedFileAttachment type to protocol and composer attachment system
- Fixed adaptive modal sheet closing on backdrop press in selection mode