dsh-multi-window-context-management: Multi-window Context on DSH Native Compression

The DSH plugin **dsh-multi-window-context-management** (0.7.0), maintained by overact, performs windowed handovers on top of native compaction: it appends window messages after every compression commit, providing `new_context`, session notes, and `history_search`/`history_read`. It does not replace the compression engine, and `/ctx` serves as a global instance switch. Install `dsh-multi-window-context-management` via npm. While drawing inspiration from Codex, it does not guarantee lossless recovery, making it suitable for long-session agents to recall details on demand.