Enumerate every locally installed Windows font face, including per-user font files. Correct glyph-width probing and collection-file enumeration, and exclude cloud fonts that are not installed.
Closes#1241
On macOS versions where WKWebView refuses user-installed fonts by family name (fonts in ~/Library/Fonts or /Library/Fonts), the editor, terminal, Markdown and UI fell back to the default font and Nerd Font icons showed as boxes; only a webfont loaded from the file's bytes renders.
Root cause: the shared font resolver only ever referred to fonts by local family name, so every consumer depended on the WebView resolving user fonts by name. A URL-based webfont is blocked by the existing font-src policy, which stays unchanged.
Fix: the shared resolver probes whether a family renders by name (on a document-attached canvas; a detached canvas falls back even when the font works) and only when it does not, fetches the enumerated user font files over a raw-bytes IPC (user fonts only, looked up by family, no paths accepted) and registers them with the FontFace API under a stable alias. Only the faces nearest regular/bold and their italics are loaded, once per family. Covers editor and editor fallback, diff/merge views, terminal font, fallback and built-in Nerd fallback (re-measured after loading), embedded terminal, settings preview, custom UI font, Markdown and Mermaid. A debug-only environment switch reproduces the WebView restriction for testing.
Verified on macOS 26 with the restriction simulated (icons boxes before, correct after) and without it (no font bytes transferred, no regression). Not run on the reporter's macOS version, Windows or Linux; other platforms keep the previous behaviour.
Fixes#592
The font pickers (editor, fallback, UI, terminal) become editable comboboxes: type to search installed families or enter any family name, and Refresh re-reads the system fonts. ide-fonts' cached family list is now refreshable (DirectWrite re-queries the system collection with checkForUpdates; CoreText and fontconfig are read anew), exposed through system_font_families(refresh). Before the first native result the pickers fall back to Canvas detection of common families; saved names and the last catalog are kept when a refresh fails. Fonts are enumerated on the local desktop in remote-development windows too.
Co-authored-by: bghtyu <3931591+bghtyu@users.noreply.github.com>
The font pickers never read the installed fonts: they probed a hard-coded list of ~30 names with canvas width checks, so anything outside the list never appeared and the monospaced filter changed nothing. A new ide-fonts crate asks the platform font system for families and their fixed-pitch flag (CoreText on macOS, DirectWrite on Windows, fc-list on Linux/BSD), exposed as system_font_families (spawn_blocking, cached). Every font picker — editor font and fallback, terminal font and fallback, UI custom font — uses one FontSelect with prefix type-ahead, a real monospaced filter, and keeps an uninstalled selection visible.
Not verified on Windows or Linux machines.
Fixes#199
Claude-Session: https://claude.ai/code/session_01Dq6jQQn8ZhRfkkyj3PRutA
Marius Ciepluch
l0ng-ai
Walter Wangandbghtyu