fix: 修复 cache_tasks 表的 task_type 列值范围问题

backend/app/models/cache.py

@@ -13,7 +13,7 @@ class CacheTask(Base):
     
     id = Column(Integer, primary_key=True, index=True)
     task_name = Column(String(200), nullable=False)
-    task_type = Column(String(50), nullable=False)  # detect_missing, cache_data, sync_data
+    task_type = Column(String(50), nullable=False)  # detect_missing, detect_all_missing, cache_data, cache_all_data, sync_data, fill_missing_data, batch_fill_date
     security_type = Column(String(20), nullable=False)  # stock, future, index
     period_type = Column(String(10))  # daily, min1, min5, etc.
     start_date = Column(Date, nullable=False)

backend/app/schemas/cache.py

@@ -9,7 +9,7 @@ from pydantic import BaseModel, Field
 class CacheTaskCreate(BaseModel):
     """创建缓存任务"""
     task_name: str
-    task_type: str = Field(..., description="detect_missing, cache_data, sync_data")
+    task_type: str = Field(..., description="detect_missing, detect_all_missing, cache_data, cache_all_data, sync_data, fill_missing_data, batch_fill_date")
     security_type: str = Field(..., description="stock, future, index")
     period_type: Optional[str] = Field(default="daily", description="daily, min1, min5, etc.")
     start_date: str

database/init.sql

@@ -469,7 +469,7 @@ CREATE INDEX IF NOT EXISTS idx_calendar_date ON trading_calendar(trade_date);
 CREATE TABLE IF NOT EXISTS cache_tasks (
     id SERIAL PRIMARY KEY,
     task_name VARCHAR(200) NOT NULL,
-    task_type VARCHAR(50) NOT NULL CHECK (task_type IN ('detect_missing', 'cache_data', 'sync_data')),
+    task_type VARCHAR(50) NOT NULL CHECK (task_type IN ('detect_missing', 'detect_all_missing', 'cache_data', 'cache_all_data', 'sync_data', 'fill_missing_data', 'batch_fill_date')),
     security_type VARCHAR(20) NOT NULL,  -- stock, future, index
     period_type VARCHAR(10),  -- daily, min1, min5, etc.
     start_date DATE NOT NULL,