Add Windows installation rule with GUI and CLI methods

Co-authored-by: tuanductran <69758022+tuanductran@users.noreply.github.com>

Author: Copilot

skills/nextdns-cli/SKILL.md

@@ -14,6 +14,7 @@ metadata:
 | Rule | Keywords | Description |
 |------|----------|-------------|
 | [installation](rules/installation.md) | install, setup, curl, nextdns install | Install NextDNS CLI on various platforms |
+| [windows-installation](rules/windows-installation.md) | Windows, GUI, CLI, installation, Systray, EXE | Windows-specific installation methods |
 | [daemon-control](rules/daemon-control.md) | start, stop, restart, status, daemon | Control NextDNS daemon service |
 | [system-configuration](rules/system-configuration.md) | activate, deactivate, DNS resolver | Configure system DNS settings |
 | [profile-configuration](rules/profile-configuration.md) | config, profile ID, settings | Configure NextDNS profile and settings |

skills/nextdns-cli/rules/windows-installation.md

@@ -0,0 +1,84 @@
+---
+title: Windows Installation
+impact: HIGH
+impactDescription: Proper Windows-specific installation procedures ensure NextDNS CLI is correctly deployed with appropriate privileges and system integration
+type: capability
+tags: Windows, GUI, CLI, installation, setup, EXE, Systray
+---
+
+# Windows Installation
+
+**Impact: HIGH** - Critical for proper NextDNS deployment on Windows systems
+
+NextDNS offers two installation methods for Windows: an official GUI application with a Systray icon for easy management, and a manual CLI installation for advanced users who prefer command-line control.
+
+## Official GUI App Installation
+
+The recommended method for most users is the official GUI application, which provides a user-friendly Systray interface.
+
+### Download and Setup
+
+1. **Download**: Get the latest stable release from <https://nextdns.io/download/windows/stable>.
+2. **Install**: Run the installer and follow the setup wizard.
+3. **Configure**: Right-click the Systray icon, open **Settings**, and enter your Configuration ID.
+4. **Activate**: Right-click the Systray icon and click **Enable** to start DNS protection.
+
+The GUI app automatically handles service installation, Windows Firewall rules, and network adapter configuration.
+
+## Manual CLI Installation
+
+For advanced users, server deployments, or automated setups, the CLI method provides more control.
+
+### Download
+
+Download the latest Windows binary from [GitHub Releases](https://github.com/nextdns/nextdns/releases).
+
+### Installation Steps
+
+1. **Create Directory**: Create a dedicated folder for the NextDNS binary:
+
+    ```dos
+    mkdir "C:\Program Files\NextDNS"
+    ```
+
+2. **Move Binary**: Place the downloaded `nextdns.exe` into `C:\Program Files\NextDNS\`.
+
+3. **Install Service**: Open an **Administrator** Command Prompt and run:
+
+    ```dos
+    "C:\Program Files\NextDNS\nextdns.exe" install ^
+      -config <your_config_id> ^
+      -report-client-info ^
+      -auto-activate
+    ```
+
+    **Note**: Replace `<your_config_id>` with your actual NextDNS Configuration ID (e.g., `abc123`).
+
+### Command Options
+
+- `-config <your_config_id>`: Specifies your NextDNS profile.
+- `-report-client-info`: Enables device identification in the NextDNS dashboard.
+- `-auto-activate`: Automatically configures Windows DNS settings to use NextDNS.
+
+## Verification
+
+After installation, verify NextDNS is running:
+
+```dos
+"C:\Program Files\NextDNS\nextdns.exe" status
+```
+
+You should see active status and the configured profile ID.
+
+## Important Considerations
+
+- **Administrator Rights**: Both installation methods require Administrator privileges.
+- **Windows Firewall**: The installer automatically configures firewall rules.
+- **DNS Conflicts**: Disable other DNS services or VPN DNS overrides if they conflict.
+- **Updates**: The GUI app can auto-update. For CLI installations, manually download new releases.
+
+## Reference
+
+- [NextDNS Downloads](https://nextdns.io/download)
+- [NextDNS CLI GitHub](https://github.com/nextdns/nextdns)
+- [NextDNS CLI Wiki](https://github.com/nextdns/nextdns/wiki)