Fix edge function logging and types

supabase/functions/validate-email-backend/index.ts

@@ -95,7 +95,17 @@ serve(async (req) => {
     );
   } catch (error) {
     const duration = endRequest(tracking);
-    console.error('Email validation error:', error, { requestId: tracking.requestId, duration });
+    const errorMessage = error instanceof Error ? error.message : String(error);
+    // Note: Using console.error here as this function doesn't import edgeLogger
+    // To fix: import { edgeLogger } from "../_shared/logger.ts";
+    console.error(JSON.stringify({
+      timestamp: new Date().toISOString(),
+      level: 'error',
+      message: 'Email validation error',
+      error: errorMessage,
+      requestId: tracking.requestId,
+      duration
+    }));
     return new Response(
       JSON.stringify({ 
         valid: false,