Repair: the Google Fonts host commands as 7f9e172 meant them (a staging race split them from 43fc8a1)

Two agents staged the same host files at once: 7f9e172 went in with the diagnostics' hunks of app.rs, commands.rs and lib.rs instead of its own, and 43fc8a1 then dropped fonts_commands.rs. This puts back exactly the Google Fonts wiring from the working tree (AppConfig::with_fonts, SiteHooks::fonts_changed, commands::GFONTS, the fonts handler, fonts_commands.rs); the diagnostics stay as committed. theme.rs, still in progress, is not included.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/waybetter-host/src/app.rs

@@ -86,6 +86,9 @@ pub struct AppConfig {
     pub store: Option<&'static crate::store::StoreConfig>,
     /// The shell's media panel (gallery folders, the clipboard history): serves [`commands::MEDIA`].
     pub media: bool,
+    /// Google Fonts (install, remove, preview; the cache in app data): serves [`commands::GFONTS`]
+    /// and calls [`SiteHooks::fonts_changed`]. Needs the `net` feature.
+    pub fonts: bool,
 }
 
 impl AppConfig {
@@ -109,9 +112,16 @@ impl AppConfig {
             home_url: None,
             store: None,
             media: false,
+            fonts: false,
         }
     }
 
+    /// Serves the Google Fonts commands ([`commands::GFONTS`]).
+    pub const fn with_fonts(mut self) -> Self {
+        self.fonts = true;
+        self
+    }
+
     /// Serves the media panel's commands ([`commands::MEDIA`]).
     pub const fn with_media(mut self) -> Self {
         self.media = true;
@@ -202,6 +212,10 @@ pub trait SiteHooks: Send + Sync + 'static {
     /// A tab webview was created.
     fn tab_created(&self, _app: &AppHandle) {}
 
+    /// A Google font was installed or removed ([`commands::GFONTS`]): give the site tabs their
+    /// theme, and the font bytes, again.
+    fn fonts_changed(&self, _app: &AppHandle) {}
+
     /// `tab` was laid out for `item` (existing or new), before it is placed.
     fn tab_placed(&self, _app: &AppHandle, _tab: &Webview, _item: &TabLayout) {}
 
@@ -248,6 +262,11 @@ fn host_state(app: &AppHandle) -> tauri::State<'_, Host> {
     app.state::<Host>()
 }
 
+/// The app's site hooks ([`run_app`] must be running).
+pub(crate) fn hooks(app: &AppHandle) -> Arc<dyn SiteHooks> {
+    host_state(app).hooks.clone()
+}
+
 /// The app's config ([`run_app`] must be running).
 pub fn config(app: &AppHandle) -> AppConfig {
     host_state(app).config
@@ -1115,6 +1134,17 @@ fn store_handler() -> impl Fn(tauri::ipc::Invoke<Wry>) -> bool + Send + Sync + '
     |_| false
 }
 
+/// The Google Fonts commands ([`commands::GFONTS`]): with the `net` feature (downloads) only.
+#[cfg(feature = "net")]
+fn fonts_handler() -> impl Fn(tauri::ipc::Invoke<Wry>) -> bool + Send + Sync + 'static {
+    crate::fonts_commands::handler()
+}
+
+#[cfg(not(feature = "net"))]
+fn fonts_handler() -> impl Fn(tauri::ipc::Invoke<Wry>) -> bool + Send + Sync + 'static {
+    |_| false
+}
+
 /// The media panel's commands ([`commands::MEDIA`]).
 fn media_handler() -> impl Fn(tauri::ipc::Invoke<Wry>) -> bool + Send + Sync + 'static {
     crate::media_commands::handler()
@@ -1152,6 +1182,7 @@ impl App {
         let host_handler = host_handler();
         let store_handler = store_handler();
         let media_handler = media_handler();
+        let fonts_handler = fonts_handler();
         let builder = tauri::Builder::<Wry>::default()
             // Must be first: a second launch focuses the running window instead of fighting over
             // the app's data and WebView profile (and hands over its link).
@@ -1232,6 +1263,8 @@ impl App {
                 #[cfg(feature = "net")]
                 crate::store_commands::init(&handle, &config);
                 crate::media_commands::init(&handle);
+                #[cfg(feature = "net")]
+                crate::fonts_commands::init(&handle);
                 // Safe mode for this run: the launch argument, or Shift held while starting (Windows).
                 crate::safe::set(crate::safe::at_launch(std::env::args(), host::shift_held()));
                 // Focus and layering diagnostics for this run: `--diag` or WAYBETTER_DIAG=1 (app log folder, diag.log).
@@ -1250,6 +1283,8 @@ impl App {
                     store_handler(invoke)
                 } else if commands::MEDIA.contains(&invoke.message.command()) {
                     media_handler(invoke)
+                } else if commands::GFONTS.contains(&invoke.message.command()) {
+                    fonts_handler(invoke)
                 } else if commands::is_host(invoke.message.command()) {
                     host_handler(invoke)
                 } else {

crates/waybetter-host/src/commands.rs

@@ -82,9 +82,13 @@ pub const MEDIA: &[&str] = &[
     "clip_remove",
 ];
 
+/// Shell-only, optional: Google Fonts (what is installed, install, remove, the faces of a family and
+/// a preview), served when the app sets `AppConfig::fonts`; needs the `net` feature.
+pub const GFONTS: &[&str] = &["gfonts_installed", "gfonts_install", "gfonts_remove", "gfonts_faces", "gfonts_preview"];
+
 /// Whether `command` is one of the host's (dispatched to the host, never to the app's handler).
 pub fn is_host(command: &str) -> bool {
-    SHELL.contains(&command) || TAB.contains(&command) || SITE.contains(&command) || STORE.contains(&command) || MEDIA.contains(&command)
+    SHELL.contains(&command) || TAB.contains(&command) || SITE.contains(&command) || STORE.contains(&command) || MEDIA.contains(&command) || GFONTS.contains(&command)
 }
 
 /// The capability permission tauri-build generates for `command` (`tabs_sync` → `allow-tabs-sync`).
@@ -99,8 +103,8 @@ pub fn permission(command: &str) -> String {
 /// tauri_build::AppManifest::new().commands(waybetter_host::commands::manifest(&["draft_list"]))
 /// ```
 pub fn manifest(app: &[&'static str]) -> &'static [&'static str] {
-    let mut all: Vec<&'static str> = Vec::with_capacity(app.len() + SHELL.len() + TAB.len() + SITE.len() + STORE.len() + MEDIA.len());
+    let mut all: Vec<&'static str> = Vec::with_capacity(app.len() + SHELL.len() + TAB.len() + SITE.len() + STORE.len() + MEDIA.len() + GFONTS.len());
-    for command in app.iter().chain(SHELL).chain(TAB).chain(SITE).chain(STORE).chain(MEDIA) {
+    for command in app.iter().chain(SHELL).chain(TAB).chain(SITE).chain(STORE).chain(MEDIA).chain(GFONTS) {
         if !all.contains(command) {
             all.push(command);
         }
@@ -117,7 +121,7 @@ mod tests {
         let all = manifest(&["draft_list", "tabs_sync"]);
         assert_eq!(all[0], "draft_list");
         assert_eq!(all.iter().filter(|c| **c == "tabs_sync").count(), 1);
-        for command in SHELL.iter().chain(TAB).chain(SITE).chain(STORE).chain(MEDIA) {
+        for command in SHELL.iter().chain(TAB).chain(SITE).chain(STORE).chain(MEDIA).chain(GFONTS) {
             assert!(all.contains(command), "{command}");
             assert!(is_host(command));
         }
@@ -127,7 +131,7 @@ mod tests {
 
     #[test]
     fn shell_and_tab_commands_do_not_overlap() {
-        assert!(!SHELL.iter().any(|command| TAB.contains(command) || SITE.contains(command) || STORE.contains(command) || MEDIA.contains(command)));
+        assert!(!SHELL.iter().any(|command| TAB.contains(command) || SITE.contains(command) || STORE.contains(command) || MEDIA.contains(command) || GFONTS.contains(command)));
         assert!(!TAB.iter().any(|command| SITE.contains(command)));
     }
 }

crates/waybetter-host/src/fonts_commands.rs

@@ -0,0 +1,66 @@
+//! Google Fonts, native side, for every app that sets [`crate::app::AppConfig::fonts`]: the
+//! shell-only `gfonts_*` commands ([`crate::commands::GFONTS`]) over [`crate::fonts`]'s downloads
+//! and cache (`fonts.googleapis.com` and `fonts.gstatic.com` only, app-data `fonts/`). Site tabs
+//! never request fonts and gain no command: native code hands them cached bytes
+//! ([`crate::fonts::page_script_for`]).
+//!
+//! When a font is installed or removed the app's [`crate::app::SiteHooks::fonts_changed`] runs, so
+//! it can give every site tab its theme (and the font bytes) again.
+
+use crate::fonts::{self, InstalledFont};
+use crate::gfonts::Weights;
+use crate::host::shell_only;
+use tauri::{AppHandle, Manager, Webview};
+
+/// Opens the font cache in app data. Does nothing unless the app set [`crate::app::AppConfig::fonts`].
+pub(crate) fn init(app: &AppHandle) {
+    if !crate::app::config(app).fonts {
+        return;
+    }
+    if let Ok(dir) = app.path().app_data_dir() {
+        fonts::init(&dir);
+    }
+}
+
+fn changed(app: &AppHandle) {
+    crate::app::hooks(app).fonts_changed(app);
+}
+
+#[tauri::command]
+pub(crate) async fn gfonts_installed(webview: Webview) -> Result<Vec<InstalledFont>, String> {
+    shell_only(&webview)?;
+    fonts::installed()
+}
+
+#[tauri::command]
+pub(crate) async fn gfonts_install(webview: Webview, app: AppHandle, family: String, weights: Weights) -> Result<InstalledFont, String> {
+    shell_only(&webview)?;
+    let installed = fonts::install(family, weights).await?;
+    changed(&app);
+    Ok(installed)
+}
+
+#[tauri::command]
+pub(crate) async fn gfonts_remove(webview: Webview, app: AppHandle, family: String) -> Result<(), String> {
+    shell_only(&webview)?;
+    fonts::remove(&family)?;
+    changed(&app);
+    Ok(())
+}
+
+#[tauri::command]
+pub(crate) async fn gfonts_faces(webview: Webview, family: String) -> Result<serde_json::Value, String> {
+    shell_only(&webview)?;
+    fonts::faces(&family)
+}
+
+#[tauri::command]
+pub(crate) async fn gfonts_preview(webview: Webview, family: String, weights: Weights, text: String) -> Result<Vec<serde_json::Value>, String> {
+    shell_only(&webview)?;
+    fonts::preview(family, weights, text).await
+}
+
+/// The fonts commands ([`crate::commands::GFONTS`]).
+pub(crate) fn handler() -> impl Fn(tauri::ipc::Invoke<tauri::Wry>) -> bool + Send + Sync + 'static {
+    tauri::generate_handler![gfonts_installed, gfonts_install, gfonts_remove, gfonts_faces, gfonts_preview]
+}

crates/waybetter-host/src/lib.rs

@@ -85,6 +85,8 @@ pub mod app;
 mod store_commands;
 #[cfg(feature = "app")]
 pub mod media_commands;
+#[cfg(all(feature = "app", feature = "net"))]
+mod fonts_commands;
 #[cfg(all(feature = "app", debug_assertions))]
 pub mod devloop;
 #[cfg(feature = "tauri")]