Tidy Tauri code and enable "Open file in Stirling PDF" (#4836)

# Description of Changes
Tidy Tauri code and enable "Open file in Stirling PDF"

frontend/src/core/components/AppProviders.tsx

@@ -8,7 +8,7 @@ import { ToolWorkflowProvider } from "@app/contexts/ToolWorkflowContext";
 import { HotkeyProvider } from "@app/contexts/HotkeyContext";
 import { SidebarProvider } from "@app/contexts/SidebarContext";
 import { PreferencesProvider } from "@app/contexts/PreferencesContext";
-import { AppConfigProvider } from "@app/contexts/AppConfigContext";
+import { AppConfigProvider, AppConfigRetryOptions } from "@app/contexts/AppConfigContext";
 import { RightRailProvider } from "@app/contexts/RightRailContext";
 import { ViewerProvider } from "@app/contexts/ViewerContext";
 import { SignatureProvider } from "@app/contexts/SignatureContext";
@@ -16,6 +16,7 @@ import { OnboardingProvider } from "@app/contexts/OnboardingContext";
 import { TourOrchestrationProvider } from "@app/contexts/TourOrchestrationContext";
 import ErrorBoundary from "@app/components/shared/ErrorBoundary";
 import { useScarfTracking } from "@app/hooks/useScarfTracking";
+import { useAppInitialization } from "@app/hooks/useAppInitialization";
 
 // Component to initialize scarf tracking (must be inside AppConfigProvider)
 function ScarfTrackingInitializer() {
@@ -23,19 +24,31 @@ function ScarfTrackingInitializer() {
   return null;
 }
 
+// Component to run app-level initialization (must be inside AppProviders for context access)
+function AppInitializer() {
+  useAppInitialization();
+  return null;
+}
+
+export interface AppProvidersProps {
+  children: ReactNode;
+  appConfigRetryOptions?: AppConfigRetryOptions;
+}
+
 /**
  * Core application providers
  * Contains all providers needed for the core
  */
-export function AppProviders({ children }: { children: ReactNode }) {
+export function AppProviders({ children, appConfigRetryOptions }: AppProvidersProps) {
   return (
     <PreferencesProvider>
       <RainbowThemeProvider>
         <ErrorBoundary>
           <OnboardingProvider>
-            <AppConfigProvider>
+            <AppConfigProvider retryOptions={appConfigRetryOptions}>
               <ScarfTrackingInitializer />
               <FileContextProvider enableUrlSync={true} enablePersistence={true}>
+                <AppInitializer />
                 <ToolRegistryProvider>
                   <NavigationProvider>
                     <FilesModalProvider>