Rust: list_system_fonts and load_system_font Tauri commands using
font-kit crate for cross-platform system font access.
TS: font shim detects Tauri runtime and uses invoke() for font
listing/loading instead of queryLocalFonts (unavailable in WKWebView).
fflate's zipSync produces ZIP files that Figma rejects. Move the entire
fig-kiwi container + Zstd compression + ZIP packaging into a single
Rust command (build_fig_file). Zstd now includes content size via
set_pledged_src_size. Web fallback still uses fflate/deflate.
- Replace deflate with Zstd compression via zstd-wasm for .fig export
(Figma expects Zstd, not zlib deflate)
- Extract IS_TAURI constant from repeated window check
- Fix Tauri fs permissions: use allow-write-file / allow-read-file
with glob scope instead of bare allow-write / allow-read
On macOS these live in the app submenu. On Windows/Linux:
- File → Quit (at bottom, with separator)
- Help → About OpenPencil (at bottom, with separator)
Rust emits 'menu-event' with item ID to webview.
useMenu() composable listens and dispatches actions.
Extract openFileDialog() to use-menu.ts (shared with use-keyboard).
