brockdsaver: DeepSeek Harness Pre-Boot Rescue Tool

`brockdsaver` is a DeepSeek Harness (DSH) repair tool maintained by `kirigayakazima`, offering standalone CLI and DSH Bundle modes. When DSH configuration anomalies—such as syntax errors or duplicate IDs—cause startup crashes, the tool can diagnose the issue and apply a one-click repair. Node.js >= 20 is required for installation. In standalone CLI mode, after stopping DSH, users can run `doctor` for diagnostics, `recover` for recovery, and perform backup operations. DSH Bundle mode provides a health check page, a rescue notification banner, and logging capabilities.