dsh-plugin-message-history

dsh-plugin-message-history

Shell-style Up and Down arrow key message history navigation for DeepSeek Harness Web UI.

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Features

• Terminal-Style Prompt Recall: Press ArrowUp to cycle back through previously sent prompts, just like in Bash, Zsh, or PowerShell.
• Natural Cursor Navigation: When entering or editing text, arrow keys allow normal scrolling within your draft. Navigation only triggers when pressing ArrowUp at the very beginning (position 0) of your text.
• Instant History Flipping: Once browsing history, pressing ArrowUp or ArrowDown instantly changes between prompts with a single keystroke.
• Zero-Risk Draft Preservation: Any text you were typing before entering history is automatically saved. Pressing Escape or navigating back down immediately restores your in-progress draft.
• Cross-Session Persistence: Automatically imports and synchronizes past messages across all sessions, tabs, and workspace restarts.
• Seamless Web UI Integration: Designed natively for DeepSeek Harness's chat composer without modifying editor state or stealing focus.

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How to Use

• ArrowUp:
  • In an empty composer: immediately loads your most recent prompt.
  • While drafting text: moves the cursor up; if already at the top (character 0), saves your draft and enters history navigation.
  • While viewing history: loads the next older prompt.
• ArrowDown:
  • While viewing history: loads the newer prompt; navigating forward past the newest prompt restores your saved draft.
• Escape:
  • Cancels history browsing at any time and restores whatever draft you had typed.

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Installation

In DeepSeek Harness UI (No Command Line Needed)

1. Open the DeepSeek Harness Web UI and navigate to Settings → Plugins.
2. Click the "Add Plugin" button.
3. Enter the plugin name:

   dsh-plugin-message-history
   

4. Click Install. The plugin will be fetched and activated immediately.

Via DeepSeek Harness CLI

Run the plugin install command in your terminal:

dsh plugin install dsh-plugin-message-history

Via Profile Configuration (cordis.patch.yml)

Add the plugin to your profile's cordis.patch.yml:

- insert:
    - id: dsh-plugin-message-history
      name: dsh-plugin-message-history

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License

MIT © 2026 Phillip Webber (Domush)