dsh-pattern-search: A Regex Pattern Monitoring Tool for Conversations

`dsh-pattern-search` is a plugin for the DSH environment that helps developers quickly analyze model behavior quantitatively using regular expressions. It provides two usage methods—a GUI floating window and model tool invocation—and supports real-time regex syntax validation, counting match frequency and hit rate, and displaying hit details in a paginated table, including context preview, streaming output capture, and global session analysis. Developers need to update the plugin by removing it and then adding it again after installation.