dsh-diceframe: DSH AI TRPG Plugin

DSH-DiceFrame is a plugin for DeepSeek Harness (DSH), designed to help AI GMs run structured TRPG sessions. It fills the gap left by DSH’s default dialogue-only support by providing dice rolls, world book management, and character card management. The plugin supports rich dice rules as well as d100 and d20 roll modes, and allows importing content in Markdown format. It uses slash commands to start a session, roll dice, and check status, and supports interoperability with the DiceFrame ecosystem through single files and content packs. It also enables save import and export between DSH and DiceFrame, as well as session state tracking. The plugin is simple to configure and runs with zero dependencies.