Add text selection and copy capability to terminal UI

README.md

@@ -223,6 +223,23 @@ Then run:
 sudo ~/wireguard.sh load-clients
 ```
 
+## Text Selection & Copying
+
+To copy client configurations or other text from the terminal UI:
+
+### Text Selection
+- Hold **SHIFT key** while dragging your mouse with the left button
+- This bypasses TUI mouse handling and enables your terminal's native text selection
+- Then use your terminal's copy shortcut:
+  - **Linux/WSL**: Ctrl+Shift+C (or terminal-specific shortcut)
+  - **macOS**: Cmd+C
+  - **Windows**: Click right (or use terminal copy)
+
+### Copy Buttons (when available)
+- Some modals may have explicit copy buttons (e.g., "C" to copy config)
+- These work when clipboard API is available (native Linux, macOS, WSL)
+- Over SSH requires X11 forwarding (`ssh -X`) for clipboard access
+
 ## Client Setup
 
 ### Importing the config