dsh-session-status: Set a Project Status Label for Each DSH Conversation

The DeepSeek Harness plugin `dsh-session-status` is designed to address clutter in multi-session project management by providing status labels for each session. It supports built-in three states (In Progress / Closed / On Hold) as well as custom labels, allowing users to switch statuses quickly from the conversation header. The corresponding colored status dot is displayed intuitively at the beginning of session list rows and in hover cards. Data is persisted through host-side configuration and supports synchronization across sessions and browsers. Installation requires administrator privileges, making it suitable for users who seek efficient, fine-grained management.