Add graphic captcha before user SMS login

ai_knowledge_base_v2/apps/backend/app/schemas/auth.py

@@ -9,6 +9,8 @@ from app.schemas.user import UserProfile
 
 class SendSmsRequest(BaseModel):
     phone: str = Field(min_length=11, max_length=20)
+    captchaId: str = Field(min_length=1, max_length=100)
+    captchaCode: str = Field(min_length=4, max_length=8)
 
 
 class LoginRequest(BaseModel):
@@ -20,3 +22,9 @@ class LoginResponse(BaseModel):
     token: str
     expiredAt: datetime
     user: UserProfile
+
+
+class CaptchaResponse(BaseModel):
+    captchaId: str
+    imageBase64: str
+    expiresInSeconds: int