Expose machine context debug info in console

src/lib/auth-client.tsx

@@ -43,6 +43,12 @@ type MachineContextError = {
   details?: Record<string, unknown> | null
 }
 
+declare global {
+  interface Window {
+    __machineContextDebug?: unknown
+  }
+}
+
 const authClient = createAuthClient({
   plugins: [customSessionClient<AppAuth>()],
   fetchOptions: {
@@ -124,6 +130,16 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
           const message =
             (payload && typeof payload.error === "string" && payload.error.trim()) || fallbackMessage
           if (!cancelled) {
+            const debugPayload = {
+              status: response.status,
+              message,
+              payload,
+              timestamp: new Date().toISOString(),
+            }
+            console.error("[auth] machine context request failed", debugPayload)
+            if (typeof window !== "undefined") {
+              window.__machineContextDebug = debugPayload
+            }
             setMachineContext(null)
             setMachineContextError({
               status: response.status,
@@ -160,6 +176,14 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
       } catch (error) {
         console.error("Failed to load machine context", error)
         if (!cancelled) {
+          const debugPayload = {
+            error: error instanceof Error ? { name: error.name, message: error.message, stack: error.stack } : String(error),
+            timestamp: new Date().toISOString(),
+          }
+          console.error("[auth] machine context unexpected error", debugPayload)
+          if (typeof window !== "undefined") {
+            window.__machineContextDebug = debugPayload
+          }
           setMachineContext(null)
           setMachineContextError({
             status: 0,