dsh-missher-brain: Integration and Quota Management of Memory and MSE Recall Results

`dsh-missher-brain` is a DeepSeek Harness plugin that integrates retrieval results from multiple memory providers, including Memory and MSE. It acts as an arbitration layer, providing consolidated messages via a unified entry point and supporting configurable limits (up to 6 items or 4,000 bytes). The plugin is compatible with specific versions, and provider status should be checked in Settings after installation. Note that it neither stores memories nor updates automatically, and plugins for the same service should not be enabled simultaneously.