Enhance 5G modem management with integrated web GUI and connection control

- Introduced a web GUI for managing 5G connections, replacing the standalone 5g-router service.
- Updated scripts to ensure exclusive access to the AT port, preventing conflicts.
- Improved troubleshooting documentation in 5G_MODEM_TROUBLESHOOTING.md, adding checks for processes using the AT port.
- Enhanced connection management in the web app, including auto-connect and detailed status APIs.
- Updated installation scripts to reflect changes in service management and dependencies.

README.md

@@ -52,10 +52,13 @@ Internet (CYTA 5G)
 For a **single-command flow** from a fresh device, see **[docs/QUICKSTART.md](docs/QUICKSTART.md)**. Summary:
 
 1. Clone or copy this repo to the device.
-2. Install packages: `apk add iptables libmbim-tools qmi-utils` (and optionally dnsmasq, speedtest-cli).
-3. Run **`./scripts/install.sh`** – installs scripts, OpenRC service, firewall rules, and `/etc/5g-router.conf`.
+2. Install packages: `apk add iptables python3 py3-flask` and `pip install pyserial`.
+3. Run **`./scripts/install.sh`** – installs Web GUI, config, and enables 5g-webgui service.
 4. Edit `/etc/5g-router.conf` if needed (APN, interfaces).
-5. Start: `service 5g-router start` or `/usr/local/bin/connect-5g.sh`.
+5. Start: `service 5g-webgui start`
+6. Open **http://\<device-ip\>:5000** to manage the router.
+
+**Note:** The Web GUI now includes integrated 5G connection management. The standalone `5g-router` service is kept for manual/fallback use but is no longer the default.
 
 For SSH and key setup: **[docs/DEPLOY.md](docs/DEPLOY.md)**.