feat: support use lowercase boolean parameter in environment variables

backend/common/core/config.py

@@ -6,6 +6,7 @@ from pydantic import (
     BeforeValidator,
     PostgresDsn,
     computed_field,
+    field_validator
 )
 from pydantic_core import MultiHostUrl
 from pydantic_settings import BaseSettings, SettingsConfigDict
@@ -113,5 +114,23 @@ class Settings(BaseSettings):
 
     ORACLE_CLIENT_PATH: str = '/opt/sqlbot/db_client/oracle_instant_client'
 
+    @field_validator('SQL_DEBUG',
+                     'EMBEDDING_ENABLED',
+                     'GENERATE_SQL_QUERY_LIMIT_ENABLED',
+                     'PARSE_REASONING_BLOCK_ENABLED',
+                     'PG_POOL_PRE_PING',
+                     'TABLE_EMBEDDING_ENABLED',
+                     mode='before')
+    @classmethod
+    def lowercase_bool(cls, v: Any) -> Any:
+        """将字符串形式的布尔值转换为Python布尔值"""
+        if isinstance(v, str):
+            v_lower = v.lower().strip()
+            if v_lower == 'true':
+                return True
+            elif v_lower == 'false':
+                return False
+        return v
+
 
 settings = Settings()  # type: ignore