fix(docs): fix package installation method

optimized the readme

Author: yaozheng-fang

docs/content/1.introduction/2.installation.md

@@ -49,14 +49,14 @@ uv init --no-workspace
 # Specify Python version for the environment
 uv venv --python 3.12
 
+# Activate the virtual environment
+source .venv/bin/activate
+
 # Install AgentKit using uv
-uv add agentkit-sdk-python
+uv pip install agentkit-sdk-python
 
 # Install veadk (recommended for local debugging)
-uv add veadk-python
-
-# Activate the virtual environment
-source .venv/bin/activate
+uv pip install veadk-python
 ```
 
 ### 方法三：源码安装
@@ -73,14 +73,14 @@ cd agentkit-sdk-python
 # we use uv to build this project
 uv venv --python 3.12
 
+# Activate the virtual environment
+source .venv/bin/activate
+
 # only install necessary requirements
 uv sync
 
 # install agentkit-sdk-python with editable mode
 uv pip install -e .
-
-# Activate the virtual environment
-source .venv/bin/activate
 ```
 
 如果您习惯使用 `pip` 和 `venv`，也可以执行以下命令：

docs/content/4.runtime/1.runtime_quickstart.md

@@ -67,8 +67,8 @@ source .venv/bin/activate
 > 您可以通过 `--index` 参数指定镜像源以加快安装速度。
 
 ```bash
-uv add veadk-python
-uv add agentkit-sdk-python
+uv pip install veadk-python
+uv pip install agentkit-sdk-python
 ```
 
 ### 第 2 步：创建并本地调试 Agent