feat: add docs for terminal

Author: devvaannsh

docs/08-Features/09-terminal.md

@@ -0,0 +1,55 @@
+---
+title: Terminal
+---
+
+Phoenix Code has a built-in terminal so you can run commands without leaving the editor.
+
+> The terminal is available only in desktop apps.
+
+<!-- Add an image here showing the terminal panel with a couple of tabs and a running command -->
+
+## Opening the Terminal
+
+There are a few ways to open the terminal:
+
+- Click the **Tools** button *(grid icon)* in the bottom-right toolbar and select **Terminal**
+- Go to **View > Terminal** from the menu bar
+- Press `F4`
+
+## Tabs
+
+You can have multiple terminals open at the same time, each in its own tab. The tab sidebar shows the running process name for each terminal.
+
+To create a new tab, click the **+** button at the bottom of the tab sidebar.
+
+To close a tab, hover over it and click the **X** button. If a process is still running, Phoenix Code asks for confirmation before closing.
+
+<!-- Add an image here showing the tab sidebar with multiple terminal tabs -->
+
+## Shell Selection
+
+Click the **dropdown button** *(chevron icon)* next to the new tab button to pick a different shell. The available options depend on your operating system:
+
+- **macOS**: zsh, bash, fish
+- **Linux**: bash, zsh, fish
+- **Windows**: PowerShell, Command Prompt, Git Bash, WSL
+
+Selecting a shell sets it as the default and opens a new terminal with it right away.
+
+> Only shells that are installed on your system are shown.
+
+## Right-Click Menu
+
+Right-click inside the terminal to access:
+
+- **Copy** - copy selected text
+- **Paste** - paste from clipboard
+- **Clear Terminal** - clear the terminal output
+
+## Keyboard Shortcuts
+
+| Action | Shortcut |
+|--------|----------|
+| Toggle terminal | `F4` |
+| Switch focus between editor and terminal | `Shift + Escape` |
+| Clear terminal buffer | `Ctrl/Cmd + K` |