Implement unban functionality

supabase/functions/_shared/banCheck.ts

@@ -45,3 +45,21 @@ export function createBannedResponse(requestId: string, corsHeaders: Record<stri
     }
   );
 }
+
+export function createUnbannedResponse(requestId: string, corsHeaders: Record<string, string>) {
+  return new Response(
+    JSON.stringify({ 
+      success: true,
+      message: 'Account restored. You can now access the application.',
+      requestId
+    }),
+    { 
+      status: 200, 
+      headers: { 
+        ...corsHeaders, 
+        'Content-Type': 'application/json',
+        'X-Request-ID': requestId 
+      } 
+    }
+  );
+}

supabase/migrations/20251030015243_5e033e34-37ab-41cd-8f41-8a405c34552a.sql

@@ -0,0 +1,37 @@
+-- Enhance invalidate_banned_user_sessions trigger to handle both ban and unban events
+CREATE OR REPLACE FUNCTION public.invalidate_banned_user_sessions()
+RETURNS TRIGGER
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+BEGIN
+  -- If user was just banned (banned changed from false to true)
+  IF NEW.banned = true AND OLD.banned = false THEN
+    PERFORM pg_notify(
+      'user_banned',
+      json_build_object(
+        'user_id', NEW.user_id,
+        'username', NEW.username,
+        'banned_at', NOW(),
+        'action', 'banned'
+      )::text
+    );
+  END IF;
+  
+  -- If user was just unbanned (banned changed from true to false)
+  IF NEW.banned = false AND OLD.banned = true THEN
+    PERFORM pg_notify(
+      'user_unbanned',
+      json_build_object(
+        'user_id', NEW.user_id,
+        'username', NEW.username,
+        'unbanned_at', NOW(),
+        'action', 'unbanned'
+      )::text
+    );
+  END IF;
+  
+  RETURN NEW;
+END;
+$$;