v0.1.0 — Safe prompt polishing for DSH

Initial release for DeepSeek Harness 0.1.0-rc.7. Adds a native conversation.input.right polish button, cancellable Host LLM Remote, preview-before-apply workflow, draft revision conflict protection, original-text recovery, bilingual UI, tests, research notes, and verified local DSH Web integration. No API credentials are stored by the plugin.