feat(auth): Add external authentication (OAuth/OIDC & LDAP) with admin management, UI, and encryption support

ts/models/user.ts

@@ -67,6 +67,16 @@ export class User extends plugins.smartdata.SmartDataDbDoc<User, User> implement
   @plugins.smartdata.svDb()
   public updatedAt: Date = new Date();
 
+  // External authentication fields
+  @plugins.smartdata.svDb()
+  public externalIdentityIds: string[] = [];
+
+  @plugins.smartdata.svDb()
+  public canUseLocalAuth: boolean = true;
+
+  @plugins.smartdata.svDb()
+  public provisionedByProviderId?: string; // Provider that JIT-created this user
+
   /**
    * Create a new user instance
    */