Fix/sglang kt detection (#1875)

* [feat]: simplify sglang installation with submodule, auto-sync CI, and version alignment

- Add kvcache-ai/sglang as git submodule at third_party/sglang (branch = main)
- Add top-level install.sh for one-click source installation (sglang + kt-kernel)
- Add sglang-kt as hard dependency in kt-kernel/pyproject.toml
- Add CI workflow to auto-sync sglang submodule daily and create PR
- Add CI workflow to build and publish sglang-kt to PyPI
- Integrate sglang-kt build into release-pypi.yml (version.py bump publishes both packages)
- Align sglang-kt version with ktransformers via SGLANG_KT_VERSION env var injection
- Update Dockerfile to use submodule and inject aligned version
- Update all 13 doc files, CLI hints, and i18n strings to reference new install methods

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* [build]: bump version to 0.5.2

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* [build]: rename PyPI package from kt-kernel to ktransformers

Users can now `pip install ktransformers` to get everything
(sglang-kt is auto-installed as a dependency).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Revert "[build]: rename PyPI package from kt-kernel to ktransformers"

This reverts commit e0cbbf6364.

* [build]: add ktransformers meta-package for PyPI

`pip install ktransformers` now works as a single install command.
It pulls kt-kernel (which in turn pulls sglang-kt).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* [fix]: show sglang-kt package version in kt version command

- Prioritize sglang-kt package version (aligned with ktransformers)
  over sglang internal __version__
- Update display name from "sglang" to "sglang-kt"

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* [fix]: improve sglang-kt detection in kt doctor and kt version

Recognize sglang-kt package name as proof of kvcache-ai fork installation.
Previously both commands fell through to "PyPI (not recommended)" for
non-editable local source installs. Now version.py reuses the centralized
check_sglang_installation() logic.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* [build]: bump version to 0.5.2.post1

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

kt-kernel/python/cli/utils/sglang_checker.py

@@ -38,15 +38,25 @@ def check_sglang_installation() -> dict:
         editable = False
         git_info = None
         from_source = False
+        is_kvcache_fork = False  # True if installed as sglang-kt package
 
         try:
-            # Get pip show output
+            # Get pip show output (try sglang-kt first, then sglang)
             result = subprocess.run(
-                [sys.executable, "-m", "pip", "show", "sglang"],
+                [sys.executable, "-m", "pip", "show", "sglang-kt"],
                 capture_output=True,
                 text=True,
                 timeout=10,
             )
+            if result.returncode == 0:
+                is_kvcache_fork = True  # sglang-kt package name proves it's the fork
+            else:
+                result = subprocess.run(
+                    [sys.executable, "-m", "pip", "show", "sglang"],
+                    capture_output=True,
+                    text=True,
+                    timeout=10,
+                )
 
             if result.returncode == 0:
                 pip_info = {}
@@ -128,6 +138,7 @@ def check_sglang_installation() -> dict:
             "editable": editable,
             "git_info": git_info,
             "from_source": from_source,
+            "is_kvcache_fork": is_kvcache_fork,
         }
     except ImportError:
         return {
@@ -137,6 +148,7 @@ def check_sglang_installation() -> dict:
             "editable": False,
             "git_info": None,
             "from_source": False,
+            "is_kvcache_fork": False,
         }
 
 
@@ -158,20 +170,19 @@ def get_sglang_install_instructions(lang: Optional[str] = None) -> str:
         return """
 [bold yellow]SGLang \u672a\u5b89\u88c5[/bold yellow]
 
-\u8bf7\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u5b89\u88c5 SGLang:
+\u8bf7\u9009\u62e9\u4ee5\u4e0b\u65b9\u5f0f\u4e4b\u4e00\u5b89\u88c5 SGLang (kvcache-ai \u5206\u652f):
 
-[bold]1. \u514b\u9686\u4ed3\u5e93:[/bold]
-   git clone https://github.com/kvcache-ai/sglang.git
-   cd sglang
+[bold]\u65b9\u5f0f A - \u4e00\u952e\u5b89\u88c5 (\u63a8\u8350):[/bold]
+   \u4ece ktransformers \u6839\u76ee\u5f55\u8fd0\u884c:
+   [cyan]./install.sh[/cyan]
 
-[bold]2. \u5b89\u88c5 (\u4e8c\u9009\u4e00):[/bold]
+[bold]\u65b9\u5f0f B - pip \u5b89\u88c5:[/bold]
+   [cyan]pip install sglang-kt[/cyan]
 
-   [cyan]\u65b9\u5f0f A - pip \u5b89\u88c5 (\u63a8\u8350):[/cyan]
-   pip install -e "python[all]"
-
-   [cyan]\u65b9\u5f0f B - uv \u5b89\u88c5 (\u66f4\u5feb):[/cyan]
-   pip install uv
-   uv pip install -e "python[all]"
+[bold]\u65b9\u5f0f C - \u4ece\u6e90\u7801\u5b89\u88c5:[/bold]
+   git clone --recursive https://github.com/kvcache-ai/ktransformers.git
+   cd ktransformers
+   pip install "third_party/sglang/python[all]"
 
 [dim]\u6ce8\u610f: \u8bf7\u786e\u4fdd\u5728\u6b63\u786e\u7684 Python \u73af\u5883\u4e2d\u6267\u884c\u4ee5\u4e0a\u547d\u4ee4[/dim]
 """
@@ -179,20 +190,19 @@ def get_sglang_install_instructions(lang: Optional[str] = None) -> str:
         return """
 [bold yellow]SGLang is not installed[/bold yellow]
 
-Please follow these steps to install SGLang:
+Install SGLang (kvcache-ai fork) using one of these methods:
 
-[bold]1. Clone the repository:[/bold]
-   git clone https://github.com/kvcache-ai/sglang.git
-   cd sglang
+[bold]Option A - One-click install (recommended):[/bold]
+   From the ktransformers root directory, run:
+   [cyan]./install.sh[/cyan]
 
-[bold]2. Install (choose one):[/bold]
+[bold]Option B - pip install:[/bold]
+   [cyan]pip install sglang-kt[/cyan]
 
-   [cyan]Option A - pip install (recommended):[/cyan]
-   pip install -e "python[all]"
-
-   [cyan]Option B - uv install (faster):[/cyan]
-   pip install uv
-   uv pip install -e "python[all]"
+[bold]Option C - From source:[/bold]
+   git clone --recursive https://github.com/kvcache-ai/ktransformers.git
+   cd ktransformers
+   pip install "third_party/sglang/python[all]"
 
 [dim]Note: Make sure to run these commands in the correct Python environment[/dim]
 """
@@ -369,17 +379,18 @@ def print_sglang_kt_kernel_instructions() -> None:
 您当前安装的 SGLang 不包含 kt-kernel 支持。
 kt-kernel 需要使用 kvcache-ai 维护的 SGLang 分支。
 
-[bold]请按以下步骤重新安装 SGLang:[/bold]
+[bold]请按以下步骤重新安装:[/bold]
 
 [cyan]1. 卸载当前的 SGLang:[/cyan]
    pip uninstall sglang -y
 
-[cyan]2. 克隆 kvcache-ai 的 SGLang 仓库:[/cyan]
-   git clone https://github.com/kvcache-ai/sglang.git
-   cd sglang
+[cyan]2. 安装 kvcache-ai 版本 (选择一种方式):[/cyan]
 
-[cyan]3. 安装 SGLang:[/cyan]
-   pip install -e "python[all]"
+   [bold]方式 A - 一键安装 (推荐):[/bold]
+   从 ktransformers 根目录运行: ./install.sh
+
+   [bold]方式 B - pip 安装:[/bold]
+   pip install sglang-kt
 
 [dim]注意: 请确保在正确的 Python 环境中执行以上命令[/dim]
 """
@@ -390,17 +401,18 @@ kt-kernel 需要使用 kvcache-ai 维护的 SGLang 分支。
 Your current SGLang installation does not include kt-kernel support.
 kt-kernel requires the kvcache-ai maintained fork of SGLang.
 
-[bold]Please reinstall SGLang with the following steps:[/bold]
+[bold]Please reinstall SGLang:[/bold]
 
 [cyan]1. Uninstall current SGLang:[/cyan]
    pip uninstall sglang -y
 
-[cyan]2. Clone the kvcache-ai SGLang repository:[/cyan]
-   git clone https://github.com/kvcache-ai/sglang.git
-   cd sglang
+[cyan]2. Install the kvcache-ai fork (choose one):[/cyan]
 
-[cyan]3. Install SGLang:[/cyan]
-   pip install -e "python[all]"
+   [bold]Option A - One-click install (recommended):[/bold]
+   From the ktransformers root directory, run: ./install.sh
+
+   [bold]Option B - pip install:[/bold]
+   pip install sglang-kt
 
 [dim]Note: Make sure to run these commands in the correct Python environment[/dim]
 """