chore: 升级到 Python 3.14 并现代化代码

- 升级 Docker 基础镜像从 Python 3.12 到 3.14
- 更新 pyproject.toml 支持 Python 3.13/3.14
- 移除 Python 3.8/3.9/3.10/3.11 分类器
- 更新 black 和 mypy 配置目标版本
- 将 get_event_loop() 替换为 get_running_loop() 加上 RuntimeError 处理
- 简化 compute_cost_sync 中的 asyncio.run 使用
- Dict/List/Tuple/Set → dict/list/tuple/set (PEP 585)
- Optional[T] → T | None (PEP 604)
- Union[A, B] → A | B (PEP 604)
- 移除废弃的 typing 导入
- 移除不必要的字符串引号注解

tests/api/handlers/base/test_cli_handler_convert.py

@@ -9,7 +9,6 @@ CliMessageHandlerBase._convert_sse_line 单元测试
 """
 
 import json
-from typing import Any, Dict, List, Optional
 from unittest.mock import MagicMock, patch
 
 import pytest
@@ -27,7 +26,7 @@ class MockCliHandler:
         ctx: StreamContext,
         line: str,
         events: list,
-    ) -> List[str]:
+    ) -> list[str]:
         """复制自 CliMessageHandlerBase._convert_sse_line"""
         from src.core.api_format.conversion import (
             format_conversion_registry,

tests/api/handlers/base/test_stream_processor.py

@@ -1,4 +1,4 @@
-from typing import Any, Dict, Optional
+from typing import Any
 
 from src.api.handlers.base.response_parser import ParsedChunk, ParsedResponse, ResponseParser, StreamStats
 from src.api.handlers.base.stream_context import StreamContext
@@ -7,16 +7,16 @@ from src.utils.sse_parser import SSEEventParser
 
 
 class DummyParser(ResponseParser):
-    def parse_sse_line(self, line: str, stats: StreamStats) -> Optional[ParsedChunk]:
+    def parse_sse_line(self, line: str, stats: StreamStats) -> ParsedChunk | None:
         return None
 
-    def parse_response(self, response: Dict[str, Any], status_code: int) -> ParsedResponse:
+    def parse_response(self, response: dict[str, Any], status_code: int) -> ParsedResponse:
         return ParsedResponse(raw_response=response, status_code=status_code)
 
-    def extract_usage_from_response(self, response: Dict[str, Any]) -> Dict[str, int]:
+    def extract_usage_from_response(self, response: dict[str, Any]) -> dict[str, int]:
         return {}
 
-    def extract_text_content(self, response: Dict[str, Any]) -> str:
+    def extract_text_content(self, response: dict[str, Any]) -> str:
         return ""
 
 

tests/api/handlers/base/test_stream_processor_format_conversion.py

@@ -1,5 +1,5 @@
 import json
-from typing import Any, Dict, Optional
+from typing import Any
 from unittest.mock import AsyncMock
 
 import pytest
@@ -11,16 +11,16 @@ from src.core.api_format.conversion import register_default_normalizers
 
 
 class DummyParser(ResponseParser):
-    def parse_sse_line(self, line: str, stats: StreamStats) -> Optional[Any]:  # noqa: ANN401
+    def parse_sse_line(self, line: str, stats: StreamStats) -> Any | None:  # noqa: ANN401
         return None
 
-    def parse_response(self, response: Dict[str, Any], status_code: int) -> ParsedResponse:
+    def parse_response(self, response: dict[str, Any], status_code: int) -> ParsedResponse:
         return ParsedResponse(raw_response=response, status_code=status_code)
 
-    def extract_usage_from_response(self, response: Dict[str, Any]) -> Dict[str, int]:
+    def extract_usage_from_response(self, response: dict[str, Any]) -> dict[str, int]:
         return {}
 
-    def extract_text_content(self, response: Dict[str, Any]) -> str:
+    def extract_text_content(self, response: dict[str, Any]) -> str:
         return ""