fix: sandbox warning persistence and add env var option

Fix race condition where sandbox warning appeared on every refresh
even after checking "Do not show again". The issue was that the
sandbox check effect ran before settings were hydrated from the
server, so skipSandboxWarning was always false (the default).

Changes:
- Add settingsLoaded to sandbox check dependencies to ensure the
  user's preference is loaded before checking
- Add AUTOMAKER_SKIP_SANDBOX_WARNING env var option to skip the
  warning entirely (useful for dev/CI environments)

apps/server/src/routes/health/routes/environment.ts

@@ -9,12 +9,14 @@ import type { Request, Response } from 'express';
 
 export interface EnvironmentResponse {
   isContainerized: boolean;
+  skipSandboxWarning?: boolean;
 }
 
 export function createEnvironmentHandler() {
   return (_req: Request, res: Response): void => {
     res.json({
       isContainerized: process.env.IS_CONTAINERIZED === 'true',
+      skipSandboxWarning: process.env.AUTOMAKER_SKIP_SANDBOX_WARNING === 'true',
     } satisfies EnvironmentResponse);
   };
 }

apps/ui/src/lib/http-api-client.ts

@@ -483,6 +483,7 @@ export const verifySession = async (): Promise<boolean> => {
  */
 export const checkSandboxEnvironment = async (): Promise<{
   isContainerized: boolean;
+  skipSandboxWarning?: boolean;
   error?: string;
 }> => {
   try {
@@ -498,7 +499,10 @@ export const checkSandboxEnvironment = async (): Promise<{
     }
 
     const data = await response.json();
-    return { isContainerized: data.isContainerized ?? false };
+    return {
+      isContainerized: data.isContainerized ?? false,
+      skipSandboxWarning: data.skipSandboxWarning ?? false,
+    };
   } catch (error) {
     logger.error('Sandbox environment check failed:', error);
     return { isContainerized: false, error: 'Network error' };

apps/ui/src/routes/__root.tsx

@@ -252,15 +252,16 @@ function RootLayoutContent() {
     setIsMounted(true);
   }, []);
 
-  // Check sandbox environment only after user is authenticated and setup is complete
+  // Check sandbox environment only after user is authenticated, setup is complete, and settings are loaded
   useEffect(() => {
     // Skip if already decided
     if (sandboxStatus !== 'pending') {
       return;
     }
 
-    // Don't check sandbox until user is authenticated and has completed setup
-    if (!authChecked || !isAuthenticated || !setupComplete) {
+    // Don't check sandbox until user is authenticated, has completed setup, and settings are loaded
+    // CRITICAL: settingsLoaded must be true to ensure skipSandboxWarning has been hydrated from server
+    if (!authChecked || !isAuthenticated || !setupComplete || !settingsLoaded) {
       return;
     }
 
@@ -271,8 +272,8 @@ function RootLayoutContent() {
         if (result.isContainerized) {
           // Running in a container, no warning needed
           setSandboxStatus('containerized');
-        } else if (skipSandboxWarning) {
-          // User opted to skip the warning, auto-confirm
+        } else if (result.skipSandboxWarning || skipSandboxWarning) {
+          // Skip if env var is set OR if user preference is set
           setSandboxStatus('confirmed');
         } else {
           // Not containerized, show warning dialog
@@ -290,7 +291,14 @@ function RootLayoutContent() {
     };
 
     checkSandbox();
-  }, [sandboxStatus, skipSandboxWarning, authChecked, isAuthenticated, setupComplete]);
+  }, [
+    sandboxStatus,
+    skipSandboxWarning,
+    authChecked,
+    isAuthenticated,
+    setupComplete,
+    settingsLoaded,
+  ]);
 
   // Handle sandbox risk confirmation
   const handleSandboxConfirm = useCallback(