feat(python): 完成 Python 全量迁移——剩余平台、登录通道与公共层修复

- 新增 5sing/apple/xm/me/qt/lr 平台包与取流实现（含 xm-sign、MissEvan 签名、蜻蜓 HMAC、Apple developer token）
- 新增 wy/kg/tx/lr 登录：扫码、手机号、账密（kg 20028 风控指纹）、cookie 绑定、kg/tx 续期
- request 层：保留多值 Set-Cookie；JSON body 紧凑化（修复 kg 网关验签）；直连不经系统代理（对齐 Node）
- 登录路由统一 Body(embed=True)，修复扫码轮询 422；lifespan 接入登录续期调度
- ruff/format/pyright 全绿；14 平台真实联网与 HTTP 路由验证通过

pyproject.toml

@@ -0,0 +1,62 @@
+[project]
+name = "music-server"
+version = "1.0.0"
+description = "多平台音乐聚合服务器"
+requires-python = ">=3.12,<3.13"
+dependencies = [
+  "fastapi>=0.115",
+  "uvicorn[standard]>=0.30",
+  "aiohttp>=3.10",
+  "brotli>=1.1",
+  "cryptography>=43",
+  "qrcode>=8",
+  "pillow>=10",
+]
+
+[dependency-groups]
+dev = [
+  "pytest>=8",
+  "pytest-asyncio>=0.24",
+  "ruff>=0.6",
+  "pyright>=1.1.380",
+  "httpx>=0.27",
+]
+
+[tool.ruff]
+line-length = 120
+target-version = "py312"
+src = ["app", "tests"]
+
+[tool.ruff.lint]
+select = ["E", "F", "W", "I", "UP", "B", "BLE", "ASYNC", "RUF"]
+ignore = [
+  "RUF001", # 中文全角标点在文案里是刻意用法
+  "RUF002",
+  "RUF003",
+  "E501",    # 行宽由 formatter 决定，长 URL/中文注释不强拆
+]
+
+[tool.ruff.lint.per-file-ignores]
+"tests/**" = ["B011"]
+
+[tool.ruff.format]
+quote-style = "double"
+
+[tool.pyright]
+include = ["app", "tests"]
+exclude = [".venv", "tmp"]
+pythonVersion = "3.12"
+typeCheckingMode = "basic"
+reportMissingTypeStubs = false
+reportUnknownMemberType = false
+reportUnknownVariableType = false
+reportUnknownArgumentType = false
+reportUnknownParameterType = false
+reportMissingParameterType = false
+reportUntypedFunctionDecorator = false
+reportUnnecessaryIsInstance = false
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["tests"]
+filterwarnings = ["ignore::DeprecationWarning"]