dsh-better-session-title: Replace the DSH Top Bar Session Title with a Two-Level “Workspace / Session” Breadcrumb

dsh-better-session-title is a client-side UI enhancement plugin for DeepSeek Harness (DSH), designed to optimize the session-switching experience in the Web GUI. It moves the switching entry from the left sidebar to the top bar, implemented through a two-level "Workspace/Session" breadcrumb. The plugin provides dropdown management for workspaces and sessions, supporting actions such as creating, renaming, branching, and archiving, while fully replicating the native interaction and bilingual support. After installation, it helps resolve the inconvenience of switching sessions when the sidebar is collapsed, though users should be mindful of compatibility with the `dsh-basic-right-sidebar` plugin.