dsh-hindsight-memory: A Pipeline-Level Long-Term Memory Plugin for DeepSeek Harness

The `dsh-hindsight-memory` plugin provides pipeline-level long-term memory for DeepSeek Harness (DSH). By leveraging DSH's hook mechanism, it automatically injects and persists memories before and after model calls, enabling new sessions to automatically “learn” background context. Core features include automatic recall and persistence, fault isolation, and layered configuration. After installation, users can configure parameters such as the API endpoint and memory store name via the settings panel. Operationally, the plugin automatically retrieves relevant memories at the start of each conversation, asynchronously persists content when a conversation ends, and supports memory transfer between sub-agents. It addresses the limitation of traditional agent session memory being confined to the current context.