dsh-writing-remote: DSH Writing Panel Host-side Data Channel

dsh-writing-remote is a host-side data channel plugin in the DSH writing ecosystem, designed to connect the `dsh-tool-writing` engine running on the host side with the `dsh-client-ui-writing` panel running on the client side. It adapts engine capabilities to Remote methods via the Typert protocol, ensuring that only read-only data and orchestration trigger interfaces are exposed to the client, while keeping generation capabilities and full write operations on the host side to avoid security risks. The plugin's core functions include data reading and orchestration triggering. Data reading covers project index, status, chapter list, body preview, setting browsing, project and library search, evolution version chain, and multi-line narrative thread graphs, etc.; orchestration triggering provides chapter-end automatic orchestration (such as summary, extraction, etc.) and non-destructive...