dsh-plugin-global-prompt: Injecting a Global Prompt into DSH

`dsh-plugin-global-prompt` is a DeepSeek Harness plugin designed to address the pain point of repeatedly configuring system prompts. By adding an input field under general settings, users can configure a prompt that is permanently injected into the system prompt across every model interaction, including sub-agents. The plugin saves the configuration in `$DSH_HOME/settings.yaml`, supports hot reloading, and enforces a 20,000-character limit. Users can disable it by leaving the field empty, and it does not pollute conversation history or override the Persona. The article provides a sample prompt based on the “Four-Quadrant Decision Protocol” for reference.