Document chromium backend browser-bin troubleshooting

README.md

@@ -362,6 +362,14 @@ Note for Chromium backend:
 
 - `--no-decorations` is best-effort and may be ignored by the browser/window manager.
 - `--width` and `--height` are applied together (`--window-size`) only when both are provided.
+- Deskify auto-detects a Chromium-based browser from `PATH`, but some distros ship `chrome` as a wrapper script or use different binary names/paths. If launches fail, set `--browser-bin` to a real browser binary.
+
+Troubleshooting (find the real browser binary):
+
+```bash
+command -v chrome chromium google-chrome google-chrome-stable brave-browser 2>/dev/null
+ls -la /usr/bin/chrome /usr/bin/chromium /usr/bin/google-chrome /usr/bin/google-chrome-stable 2>/dev/null
+```
 
 ### Managing Apps (`list` & `remove`)
 You can view all applications generated by `deskify`: