xby-mbit-test: MBTI Personality Test Service

`xby-mbit-test` is an MCP plugin based on DeepSeek Harness (DSH), designed to provide agents with MBTI personality test capabilities. It includes core tools such as setting an API key, starting a test (with simplified/cognitive versions), submitting answers, checking progress, and calculating results. Users must first install the plugin via a command and configure the key in the conversation. A typical workflow is: set the API key -> start the test -> answer questions -> check progress -> obtain the final analysis report. The plugin is released under the MIT License.