dsh-character-studio: Native Immersive Role-Playing Studio and Companion Runtime for DeepSeek Harness

`dsh-character-studio` is a native lightweight plugin for DeepSeek Harness (DSH), designed to address the architectural bloat of roleplay features. It integrates non-invasively with the Cordis framework, supports character cards in Markdown and SillyTavern V2 formats, and leverages the Hindsight graph memory engine to deepen long-term memory. The plugin provides character-specific memory isolation, a DeepSeek immersive monologue mode, and instruction control, ensuring that after installation, characters and memories can be efficiently managed through slash commands.