What it may solve
Immersive read-only reading panel for DeepSeek Harness. The model delivers pre-formatted Markdown via the `reading_pad_send` tool into a better-sidebar tab: three low-blue-light themes (Paper/Sepia/Night), 30em measure typography, A-/A+ font sizing, scroll-position persistence, and read-only chapter browsing of the current writing project. Rendering is a dependency-free front-end M1 Markdown subset (GFM tables; all HTML escaped; URL scheme whitelist). Requires the DSH-better-sidebar host; the manuscript source additionally needs the writing workspace channel.
Imported third-party catalog description; not a Registry verification conclusion.