feat: add invite rewards and redeem codes

backend/src/core/config/settings.py

@@ -208,6 +208,7 @@ class AgentRuntimeSettings(BaseModel):
 
 class PointsPolicySettings(BaseModel):
     register_bonus_points: int = Field(default=60, ge=0, le=1_000_000)
+    invite_reward_points: int = Field(default=40, ge=0, le=1_000_000)
     register_bonus_hmac_key: SecretStr = SecretStr("")
 
     @model_validator(mode="after")
@@ -224,7 +225,9 @@ class PointsPolicySettings(BaseModel):
 
 class AppleIapSettings(BaseModel):
     bundle_id: str = Field(default="com.meeyao.qianwen", min_length=1)
-    root_cert_url: str = "https://www.apple.com/certificateauthority/AppleIncRootCertificate.cer"
+    root_cert_url: str = (
+        "https://www.apple.com/certificateauthority/AppleIncRootCertificate.cer"
+    )
     jws_x5c_cert_url: str = "https://api.storekit.itunes.apple.com/v1/verificationKeys"
     environment: Literal["auto", "sandbox", "production"] = "auto"
     server_api_issuer_id: str | None = None