Add schema cache fallback for service account JSON

- Add fallback RPC method when PostgREST schema cache fails
- Save service account JSON separately via raw SQL
- Show warning message if manual save needed

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/components/admin/settings/IntegrasiTab.tsx

@@ -116,7 +116,40 @@ export function IntegrasiTab() {
           .update(platformPayload)
           .eq('id', settings.id);
 
-        if (platformError) throw platformError;
+        if (platformError) {
+          // If schema cache error, try saving service account JSON separately via raw SQL
+          if (platformError.code === 'PGRST204' && settings.integration_google_service_account_json) {
+            console.log('Schema cache error, using fallback RPC method');
+            const { error: rpcError } = await supabase.rpc('exec_sql', {
+              sql: `UPDATE platform_settings SET google_service_account_json = '${settings.integration_google_service_account_json.replace(/'/g, "''")}'::jsonb WHERE id = '${settings.id}'`
+            });
+
+            if (rpcError) {
+              // Save other fields without the problematic column
+              const { error: retryError } = await supabase
+                .from('platform_settings')
+                .update({
+                  integration_n8n_base_url: settings.integration_n8n_base_url,
+                  integration_whatsapp_number: settings.integration_whatsapp_number,
+                  integration_whatsapp_url: settings.integration_whatsapp_url,
+                  integration_google_calendar_id: settings.integration_google_calendar_id,
+                  integration_email_provider: settings.integration_email_provider,
+                  integration_email_api_base_url: settings.integration_email_api_base_url,
+                  integration_privacy_url: settings.integration_privacy_url,
+                  integration_terms_url: settings.integration_terms_url,
+                  integration_n8n_test_mode: settings.integration_n8n_test_mode,
+                })
+                .eq('id', settings.id);
+
+              if (retryError) throw retryError;
+              toast({ title: 'Peringatan', description: 'Pengaturan disimpan tapi Service Account JSON perlu disimpan manual. Hubungi admin.' });
+            } else {
+              toast({ title: 'Berhasil', description: 'Service Account JSON disimpan via RPC' });
+            }
+          } else {
+            throw platformError;
+          }
+        }
       }
 
       // Save email provider settings to notification_settings

verify-column.sql

@@ -0,0 +1,10 @@
+-- Check if column exists in database
+SELECT 
+    column_name,
+    data_type,
+    is_nullable,
+    column_default
+FROM information_schema.columns 
+WHERE table_schema = 'public'
+AND table_name = 'platform_settings'
+ORDER BY ordinal_position;