Features
- Added a shared file reader that expands in-app preview support for images, video, audio, PDFs, CSVs, markdown/text-style content, and document-oriented files.
- Added a dedicated reader view in Files mode so supported files can be opened, navigated, and viewed in a richer in-app experience.
- Extended the new preview workflow into Notes and code-related views for a more unified file inspection experience across the app.