feat(tool): add datetime_to_timestamp operation with timezone support

api/app/core/tools/builtin/datetime_tool.py

@@ -253,9 +253,9 @@ class DateTimeTool(BuiltinTool):
         return {
             "datetime": input_value,
             "timezone": timezone_str,
-            "timestamp": int(dt.timestamp()),
+            "timestamp": int(dt.timestamp()) * 1000,
             "iso_format": dt.isoformat(),
-            "result_data": int(dt.timestamp())
+            "result_data": int(dt.timestamp()) * 1000
         }
 
     def _calculate_datetime(self, kwargs) -> dict:

api/app/core/tools/builtin/operation_tool.py

@@ -138,6 +138,29 @@ class OperationTool(BaseTool):
                     default="Asia/Shanghai"
                 )
             ]
+        elif self.operation == "datetime_to_timestamp":
+            return [
+                ToolParameter(
+                    name="input_value",
+                    type=ParameterType.STRING,
+                    description="输入值（时间字符串，如：2026-04-07 10:30:25）",
+                    required=True
+                ),
+                ToolParameter(
+                    name="input_format",
+                    type=ParameterType.STRING,
+                    description="输入时间格式（如：%Y-%m-%d %H:%M:%S）",
+                    required=False,
+                    default="%Y-%m-%d %H:%M:%S"
+                ),
+                ToolParameter(
+                    name="from_timezone",
+                    type=ParameterType.STRING,
+                    description="源时区（如：UTC, Asia/Shanghai）",
+                    required=False,
+                    default="Asia/Shanghai"
+                )
+            ]
         else:
             return []
     

api/app/services/tool_service.py

@@ -574,6 +574,29 @@ class ToolService:
                     "default": "Asia/Shanghai"
                 }
             ]
+        elif operation == "datetime_to_timestamp":
+            return [
+                {
+                    "name": "input_value",
+                    "type": "string",
+                    "description": "输入值（时间字符串，如：2026-04-07 10:30:25）",
+                    "required": True
+                },
+                {
+                    "name": "input_format",
+                    "type": "string",
+                    "description": "输入时间格式（如：%Y-%m-%d %H:%M:%S）",
+                    "required": False,
+                    "default": "%Y-%m-%d %H:%M:%S"
+                },
+                {
+                    "name": "from_timezone",
+                    "type": "string",
+                    "description": "源时区（如：UTC, Asia/Shanghai）",
+                    "required": False,
+                    "default": "Asia/Shanghai"
+                }
+            ]
         else:
             # 默认返回所有参数（除了operation）
             return [