chore: 骨架审查修复（venv/覆盖率忽略 + pytest-asyncio 下界与 loop scope）

Co-Authored-By: Claude Code <noreply@anthropic.com>

.gitignore

@@ -14,3 +14,8 @@ admin/node_modules/
 admin/dist/
 .playwright-mcp/
 .worktrees/
+.venv/
+venv/
+.coverage
+htmlcov/
+*.egg-info/

pytest.ini

@@ -1,3 +1,4 @@
 [pytest]
 asyncio_mode = auto
+asyncio_default_fixture_loop_scope = function
 testpaths = tests

requirements-dev.txt

@@ -1,2 +1,2 @@
 pytest
-pytest-asyncio
+pytest-asyncio>=0.24