dsh-report-studio: Transform DSH sessions into verifiable work reports

dsh-report-studio is a plugin for DeepSeek Harness (DSH) designed to organize sessions into daily reports, weekly reports, handover documents, or articles. It ensures verifiable report content by deterministically extracting data (e.g., tool calls, file generation, and error logs) from persistent session event logs, eliminating the model's reliance on memory for re-describing events. The plugin supports custom templates and automatically attaches a verifiable credential block containing session information and a SHA-256 hash upon saving, allowing users to verify single files or batches using the `report_verify` tool. Reports support Markdown and HTML output formats and can be published to Feishu or Notion, or previewed via a dry run. Additionally, the plugin provides a weekly report aggregation feature that requires Node 22.15+ to read historical logs; otherwise, it is limited to the current session.