dsh-file-upload ⬆️

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One upload button + drag-and-drop files straight into the conversation — a plugin for DeepSeek Harness (dsh) web.

Unofficial project: independently developed and maintained by a community member, not an official DeepSeek product.

Screenshot

The upload icon button in the composer tool row (official DSH design tokens, follows dark/light theme); either the file's path is inserted into the input box, or — for supported images — the image lands in the official attachment rail (auto file_id reuse).

Features

Action	Effect
Click upload icon	System file picker (multi-select) → smart routing → attachment rail and/or path text
Drag a file into the window	Images & any file type are taken over (no "unsupported" toast) → smart routing
Drag a folder into the window	Recursively reads the whole folder → rebuilds it under the attachment library with its original layout → only the folder path goes into the draft (contents not expanded)
Image (PNG/JPEG/WebP/GIF)	① archived to the attachment directory (by-day folders) ② added to the official draft attachment rail → sent with automatic DeepSeek Files API file_id (same image reuses the id; 7-day expiry auto-reuploads)
Any other file	Archived to the library's files/ subfolder, <prefix> <path> text goes into the draft
Model without image support	Image falls back to archive + path text (never sent as an image block, no 400)

• Single-file limit: 64 MB (DeepSeek Files API hard limit; the local attachment store defaults to 20 MB — see Large images below)
• Everything lands in the attachment library: ~/Documents/DSH/Attachments/images/<YYYY-MM-DD>/ (images) or .../files/<YYYY-MM-DD>/ (other files) — configurable in Settings
• Button shows busy state while uploading; failures surface as Chinese notices

Settings card

• Attachment directory (~/Documents/DSH/Attachments default, ~ supported) — only used for image archives
• Path prefix ([上传文件] default) — text prepended to paths in the draft; clear it to send bare paths
• Images via official attachment (default on) — off = images follow the old path-text logic
• Archive images to the attachment directory (default on) — off = official attachment only (saves disk; if the official channel is unavailable, the image is still force-archived)
• Allow public uploads (default off) — off = same-origin check keeps allowing localhost only (CSRF-safe); on = any origin may upload, for public/port-forwarding access (e.g. ddnsto). Enable only if you trust everyone who can reach your DSH.
• Read-only display: current image size limit from the host

Large images (20–64 MB)

DeepSeek accepts up to 64 MB per image. DSH's local attachment store defaults to 20 MB; images above that (and ≤64 MB) are archived + path-text referenced (the model can still read them via read_image, which follows the same store limit).

To let large images through the official attachment path too, add this to ~/.dsh/profiles/web/cordis.patch.yml and restart dsh web:

- id: attachment-local
  config:
    maxImageBytes: 67108864   # 20 MiB → 64 MiB (DeepSeek hard limit)

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