fix(python): rename SDK distribution

python/sdk/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write python/sdk/README.md
-README.md: f2cd6b9f1a978fe5519df3965fbe6679a72d56f5
-README.zh.md: dfa25d1d09d6edf24ebf1df3faa925493aeef7de
+README.md: 2350fbfd5dd0094bfd7a11f81d8226e960879923
+README.zh.md: 5120a8c5f65360485d450614186d5cb2702fda17

python/sdk/README.md

@@ -7,7 +7,13 @@ runtime inherits normal DeepSeek Harness environment variables such as
 `DEEPSEEK_BASE_URL` and `DEEPSEEK_API_KEY`, so callers can use real model
 endpoints directly or point those variables at a local proxy.
 
-Installing `deepseek-harness` installs the exact same-version `deepseek-harness-runtime-bin` platform wheel. The normal entry point therefore needs no executable argument:
+Install the `deepseek-harness-sdk` distribution from PyPI; the import module remains `deepseek_harness`:
+
+```sh
+python -m pip install deepseek-harness-sdk
+```
+
+Installing `deepseek-harness-sdk` installs the exact same-version `deepseek-harness-runtime-bin` platform wheel. The normal entry point therefore needs no executable argument:
 
 ```py
 from deepseek_harness import DeepSeekHarness

python/sdk/README.zh.md

@@ -4,7 +4,13 @@
 
 通过 JSON-RPC stdio 驱动 DeepSeek Harness 的 Python 子进程 SDK。运行时继承常规的 DeepSeek Harness 环境变量（如 `DEEPSEEK_BASE_URL` 与 `DEEPSEEK_API_KEY`），调用方可以直接使用真实模型端点，也可以把这些变量指向本地代理。
 
-安装 `deepseek-harness` 会同时安装版本完全相同的 `deepseek-harness-runtime-bin` 平台 wheel 包。因此常规入口不需要传可执行文件参数：
+请从 PyPI 安装 `deepseek-harness-sdk` 分发包；导入模块仍为 `deepseek_harness`：
+
+```sh
+python -m pip install deepseek-harness-sdk
+```
+
+安装 `deepseek-harness-sdk` 会同时安装版本完全相同的 `deepseek-harness-runtime-bin` 平台 wheel 包。因此常规入口不需要传可执行文件参数：
 
 ```py
 from deepseek_harness import DeepSeekHarness

python/sdk/pyproject.toml

@@ -3,7 +3,7 @@ requires = ["hatchling>=1.30.1"]
 build-backend = "hatchling.build"
 
 [project]
-name = "deepseek-harness"
+name = "deepseek-harness-sdk"
 version = "0.0.0.dev0"
 description = "Python SDK for DeepSeek Harness"
 readme = "README.md"

python/sdk/tests/test_release_version.py

@@ -39,6 +39,18 @@ def test_repository_version_rejects_non_stable_versions(tmp_path: Path) -> None:
         build_python_release.repository_version(tmp_path)
 
 
+def test_stage_sdk_keeps_distribution_module_and_runtime_pin_distinct(tmp_path: Path) -> None:
+    destination = tmp_path / "staging"
+
+    build_python_release.stage_sdk(destination, "1.2.3")
+
+    pyproject = (destination / "pyproject.toml").read_text()
+    assert 'name = "deepseek-harness-sdk"' in pyproject
+    assert 'version = "1.2.3"' in pyproject
+    assert '"deepseek-harness-runtime-bin==1.2.3"' in pyproject
+    assert (destination / "src" / "deepseek_harness" / "__init__.py").is_file()
+
+
 @pytest.mark.parametrize(("target", "with_helper"), [("linux-x64", False), ("macos-arm64", True)])
 def test_stage_runtime_copies_platform_payload(
     tmp_path: Path, target: str, with_helper: bool

python/sdk/uv.lock

@@ -21,7 +21,12 @@ wheels = [
 ]
 
 [[package]]
-name = "deepseek-harness"
+name = "deepseek-harness-runtime-bin"
+version = "0.0.0.dev0"
+source = { editable = "../sdk-runtime" }
+
+[[package]]
+name = "deepseek-harness-sdk"
 version = "0.0.0.dev0"
 source = { editable = "." }
 dependencies = [
@@ -43,17 +48,12 @@ requires-dist = [
 [package.metadata.requires-dev]
 test = [{ name = "pytest", specifier = ">=8.0" }]
 
-[[package]]
-name = "deepseek-harness-runtime-bin"
-version = "0.0.0.dev0"
-source = { editable = "../sdk-runtime" }
-
 [[package]]
 name = "exceptiongroup"
 version = "1.3.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "typing-extensions" },
+    { name = "typing-extensions", marker = "python_full_version < '3.13'" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/50/79/66800aadf48771f6b62f7eb014e352e5d06856655206165d775e675a02c9/exceptiongroup-1.3.1.tar.gz", hash = "sha256:8b412432c6055b0b7d14c310000ae93352ed6754f70fa8f7c34141f91c4e3219", size = 30371, upload-time = "2025-11-21T23:01:54.787Z" }
 wheels = [