docs: add Windows WSL2 setup section (#2065)

* Takes work contributed by @hemachandra666 in PR #1951 and re-targets the PR towards the `release/1.8` branch.
* Includes some reformatting

## By Submitting this PR I confirm:
- I am familiar with the [Contributing Guidelines](https://github.com/NVIDIA/NeMo-Agent-Toolkit/blob/develop/docs/source/resources/contributing/index.md).
- We require that all contributors "sign-off" on their commits. This certifies that the contribution is your original work, or you have rights to submit it under the same license, or a compatible license.
  - Any contribution which contains commits that are not Signed-Off will not be accepted.
- When the PR is ready for review, new or existing tests cover these changes.
- When the PR is ready for review, the documentation is up to date with these changes.




## Summary by CodeRabbit

* **Documentation**
  * Updated installation guide to include Windows (WSL2) as a supported platform.
  * Added dedicated Windows (WSL2) installation section with step-by-step setup instructions, including WSL2 and Ubuntu prerequisites.
  * Added Windows-specific recommendation to use WSL2 during installation process.

Authors:
  - David Gardner (https://github.com/dagardner-nv)
  - Kunchala Hema Sai Venkat Chandra Kumar (https://github.com/hemachandra666)

Approvers:
  - https://github.com/mnajafian-nv

URL: #2065

Author: dagardner-nv

docs/source/get-started/installation.md

@@ -78,6 +78,8 @@ To install these first-party plugin libraries, you can use the full distribution
 | Linux | aarch64 | 3.11, 3.12, 3.13 | ✅ Tested, Validated in CI |
 | macOS | x86_64 | 3.11, 3.12, 3.13 | ❓ Untested, Should Work |
 | macOS | aarch64 | 3.11, 3.12, 3.13 | ✅ Tested |
+| [Windows (WSL2)](#windows-wsl2) | x86_64 | 3.11, 3.12, 3.13 | ✅ Tested |
+| [Windows (WSL2)](#windows-wsl2) | aarch64 | 3.11, 3.12, 3.13 | ❓ Untested, Should Work |
 | Windows | x86_64 | 3.11, 3.12, 3.13 | ❓ Untested, Should Work |
 | Windows | aarch64 | 3.11, 3.12, 3.13 | ❌ Unsupported |
 
@@ -120,6 +122,8 @@ The full list of optional dependencies can be found [here](#packages).
 Using Conda environments is not recommended and may cause component resolution issues. Only create vanilla Python virtual environments through `python -m venv` or `uv venv` with no other active environments. For more information, see the [Troubleshooting Guide](../resources/troubleshooting.md#workflow-issues).
 :::
 
+For Windows users, it is recommended to run NeMo Agent Toolkit inside WSL2. Follow the [Windows (WSL2)](#windows-wsl2) section below for Windows-specific installation instructions.
+
 Installing from source is required to run any examples provided in the repository or to contribute to the project.
 
 1. Clone the NeMo Agent Toolkit repository to your local machine.
@@ -184,6 +188,63 @@ Installing from source is required to run any examples provided in the repositor
 
      If the installation succeeded, the `nat` command will log the help message and its current version.
 
+## Windows (WSL2)
+
+NeMo Agent Toolkit is developed and tested on Linux and macOS. On Windows, the recommended path is to run the toolkit inside the Windows Subsystem for Linux 2 (WSL2). The steps in this section were verified on Windows 11 with Ubuntu 24.04 LTS.
+
+Complete the Windows-specific steps below, then continue with the standard [Install From Source](#install-from-source) steps, running every command inside the WSL2 Ubuntu shell.
+
+### Install WSL2 and Ubuntu
+
+From an Administrator PowerShell session, install WSL2 with an Ubuntu distribution, then restart the machine when prompted:
+
+```bash
+wsl --install -d Ubuntu-24.04
+```
+
+:::{note}
+To check whether WSL2 is already installed, run `wsl --status`. If the output reports a default distribution and `Default Version: 2`, WSL2 is ready and you can skip to the next step.
+:::
+
+### Set up the Linux user
+
+The first time Ubuntu launches, it prompts you to create a Linux username and password. This password is separate from the Windows password and is used for `sudo` commands inside Ubuntu.
+
+:::{note}
+To set or change the password later, run the following from an Administrator PowerShell session, replacing `<username>` with your Linux username:
+
+```bash
+wsl -u root
+passwd <username>
+exit
+```
+:::
+
+### Install build prerequisites
+
+Open Ubuntu (from the Start menu, or by running `wsl` in PowerShell) and install the build tools. Git Large File Storage (LFS) is required by the repository and is not included in the default Ubuntu image:
+
+```bash
+sudo apt update && sudo apt install -y curl git build-essential git-lfs
+```
+
+### Install uv
+
+Install [`uv`](https://docs.astral.sh/uv/) into your user directory:
+
+```bash
+curl -LsSf https://astral.sh/uv/install.sh | sh
+```
+
+:::{note}
+After installing, run `source $HOME/.local/bin/env` in the current shell, or close and reopen Ubuntu, so that the `uv` command is on your `PATH`.
+:::
+
+### Continue with Install From Source
+
+Follow the [Install From Source](#install-from-source) steps below. Run every command inside the WSL2 Ubuntu shell, not in PowerShell or `cmd`. After activating the virtual environment, the shell prompt begins with `(.venv)`; activate the environment in every new Ubuntu session before running `nat` or `uv` commands.
+
+
 ## Next Steps
 
 * Follow the [Quick Start Guide](./quick-start.md) to get started running workflows with NeMo Agent Toolkit.