修改

1、微信回调签名验证绕过问题
2、联系请求竞态条件问题
3、contact列表count过滤bug
4、核心业务表索引添加

video-gen-api/app/models/contact_request.py

@@ -1,4 +1,4 @@
-from sqlalchemy import Boolean, ForeignKey, String, Text
+from sqlalchemy import Boolean, ForeignKey, String, Text, UniqueConstraint, Index
 from sqlalchemy.orm import Mapped, mapped_column
 
 from app.models.base import Base, TimestampMixin
@@ -14,4 +14,11 @@ class ContactRequest(Base, TimestampMixin):
     industry: Mapped[str] = mapped_column(String(64))
     name: Mapped[str] = mapped_column(String(64))
     message: Mapped[str | None] = mapped_column(Text, nullable=True)
-    is_handled: Mapped[bool] = mapped_column(Boolean, default=False)
+    is_handled: Mapped[bool] = mapped_column(Boolean, default=False)
+    submit_date: Mapped[str] = mapped_column(String(10), index=True)
+
+    __table_args__ = (
+        UniqueConstraint('user_id', 'submit_date', name='uq_contact_user_date'),
+        Index('idx_contact_handled_created', 'is_handled', 'created_at'),
+        Index('idx_contact_user_date_created', 'user_id', 'submit_date', 'created_at'),
+    )