Frost-Reed/blocker-notify: DSH Block Notification Plugin

Frost-Reed/blocker-notify is an MIT-licensed plugin for DeepSeek Harness (DSH) (v0.3.0) designed to address issues where the Agent runtime is blocked while waiting for user approval, answering questions, or plan review, and the user does not respond in time. The plugin's core functions include displaying a global banner on the webpage, triggering workspace entry flashing, playing a short Web Audio prompt, and sending operating system-level notifications when an "actionable block" occurs. For scenarios such as sandbox rejection (FS_SANDBOX_DENIED) that do not require user intervention, the plugin only logs the event without disturbing the user. The plugin supports two modes: dynamic enabling (process memory state, invalid after restart) and official bundle installation (persistent, requires service restart). It is recommended to check before installation.