dsh-obsidian-assistant: Read and Write Local Obsidian Vault in DSH

`dsh-obsidian-assistant` is a DeepSeek Harness plugin for unified operation of Obsidian vaults. It employs a dual-channel mechanism: the file channel operates independently of Obsidian, supporting full-text search, note reading and writing, bidirectional link analysis, batch renaming with automatic wikilink rewriting, and novel chapter export; the REST channel is enabled when Obsidian is online, offering high-speed index search, command triggering (e.g., Dataview/Templater), and advanced API passthrough. If the REST channel is unavailable, the system seamlessly degrades to file mode. Installation requires configuring the mandatory `vaultPath` parameter, with optional parameters such as `apiUrl`. Typical use cases include searching before reading notes, employing idempotent editing, and more.