Markdown Reader v3.5

This release focuses on Markdown rendering polish, safer editing, richer CLI workflows, and the GitHub issue #2 icon fix.

Fixed

Fixed favorite and pinned document row action icons that could appear invisible in the document library.
The library row tools now use explicit fixed-size Lucide icons and SVG styling so favorite, pinned, and lock actions remain visible.

Syntax-highlighted code blocks with copy buttons.
KaTeX inline and block formulas.
Mermaid diagram rendering.
GFM table styling and GitHub-style callouts.
Editor shortcuts and selection actions for bold, italic, links, math, tables, code blocks, Mermaid diagrams, quotes, lists, and tasks.
Built-in Chinese and English Markdown guides opened from the Help window.
Document locking to prevent accidental save, image insertion, and history restore on protected files.
Edit history listing, preview, and restore for save-before-backup versions.
CLI coverage for list, import/convert, export to md/txt/html, inspect, search, read, save with backup, history-read, and restore.

The library and history panels now open as floating panels, keeping the reader canvas cleaner.
The main document modes are Read and Edit, with Markdown source editing kept as the stable editing surface.
Search results now highlight matched text and show line numbers.

Apple Silicon / M-series only: Markdown-Reader_3.5_macos-apple-silicon.app.tar.gz
Intel Mac builds are not shipped.