feat(users): add user administration and password management

validation-suite/backend/mercury/app/schemas/auth.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+from datetime import datetime
+
 from pydantic import BaseModel, EmailStr
 
 from app.models.user import UserRole
@@ -18,7 +20,16 @@ class TokenResponse(BaseModel):
 
 class UserRead(EntityRead):
     email: EmailStr
-    full_name: str
+    first_name: str
+    last_name: str
     role: UserRole
     is_active: bool
+    must_change_password: bool
+    last_login_at: datetime | None = None
+    password_changed_at: datetime | None = None
 
+
+class ChangePasswordRequest(BaseModel):
+    current_password: str
+    new_password: str
+    new_password_confirmation: str