Fix remaining console logs and types

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

@@ -1,5 +1,6 @@
 import { serve } from "https://deno.land/std@0.168.0/http/server.ts";
 import { createClient } from 'https://esm.sh/@supabase/supabase-js@2.39.3';
+import { edgeLogger } from "../_shared/logger.ts";
 
 const corsHeaders = {
   'Access-Control-Allow-Origin': '*',
@@ -96,16 +97,11 @@ serve(async (req) => {
   } catch (error) {
     const duration = endRequest(tracking);
     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',
+    edgeLogger.error('Email validation error', {
       error: errorMessage,
       requestId: tracking.requestId,
       duration
-    }));
+    });
     return new Response(
       JSON.stringify({ 
         valid: false,