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/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")]