Publish theme snapshots through IPC from explicit live state

shell/ferese-settings/src/main.rs

@@ -81,7 +81,7 @@ enum Message {
     RefreshDisplays,
     DisplaysLoaded(Result<Vec<displays::Display>, String>),
     RefreshRate(String, displays::Mode, bool),
-    ThemeChanged(Box<ferese_config::theme::Snapshot>),
+    ThemeChanged(Box<ferese_ipc::theme::Snapshot>),
     DragWindow,
     Page(Page),
     PagePresented(Page),
@@ -151,7 +151,7 @@ struct App {
     native_palette: visuals::Palette,
     family_ids: std::sync::Arc<Vec<String>>,
     gallery_focus: Option<(String, Option<ferese_config::theme::Appearance>)>,
-    resolved: ferese_config::theme::Snapshot,
+    resolved: ferese_ipc::theme::Snapshot,
     undo_revision: u64,
     auto_details: bool,
     advanced_theme: bool,