dsh-wx-archive: WeChat Official Account Article Archiving and Full-Text Access

The `dsh-wx-archive` plugin is designed to address the challenges of directly accessing WeChat Official Account articles in DeepSeek Harness environments, providing stable archiving and full-text reading capabilities. By integrating with third-party archive services, it supports automatic deduplication, forced refresh, image mirroring, and Markdown output. Users need to install and configure it via `--profile`. It supports two quota modes: anonymous and token-based. When invoked via an Agent, permanent links should be used, and the process should be restarted for changes to take effect.