Update azure integration: Azure AD → Azure Document Intelligence

Repurpose the azure slot from Azure AD (tenant_id/client_id/client_secret)
to Azure Document Intelligence (endpoint/api_key), matching the kitchen
app's OCR credential fields. The kitchen can now delegate its OCR credentials
to the central settings service.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/integrations/schema.js

@@ -18,9 +18,9 @@ export const INTEGRATIONS = {
     secretFields: ['password'],
   },
   azure: {
-    name: 'Azure AD',
-    configFields: ['tenant_id', 'client_id'],
-    secretFields: ['client_secret'],
+    name: 'Azure Document Intelligence',
+    configFields: ['endpoint'],
+    secretFields: ['api_key'],
   },
   sambapos: {
     name: 'SambaPOS',