feat: 📝 Update docs for mobile local dev

Signed-off-by: James Manuel <moodyjmz@users.noreply.github.com>

Author: moodyjmz

develop/README.md

@@ -8,6 +8,7 @@ The docker compose environment in this directory allows to run document server b
   - `make` to use the image that is currently available locally
   - `make pull` to use the latest image from github
   - `make build` to build the image locally from scratch
+  - `make mobile` for Android emulator / physical LAN device testing (see below)
 
   You may need to generate a PAT first, as described in https://github.com/Euro-Office/DocumentServer/pkgs/container/documentserver
 - In docker-compose.yml, for the eo service, ensure that `target` is set to `develop`
@@ -26,16 +27,19 @@ The docker compose environment in this directory allows to run document server b
 
 #### Testing from mobile devices and emulators
 
-`make local` auto-detects the host's LAN IP (`HOST_LAN_IP`) so phones, tablets, and simulators/emulators can reach the editor — `localhost` only works from the desktop itself.
+`make local` runs on `localhost` — enough for the desktop browser and iOS simulator. For Android emulators and physical devices on the LAN, use `make mobile` instead — it detects the host's LAN IP and injects it so the editor is reachable from off-desktop clients.
 
-- **iOS simulator & desktop browser**: reach Nextcloud at `http://localhost:8081/` as usual.
-- **Android emulator**: log in at `http://10.0.2.2:8081/` (the emulator's alias for the host). Already trusted by the stack.
-- **Physical device on the same LAN**: log in at `http://<HOST_LAN_IP>:8081/`. `HOST_LAN_IP` is appended to Nextcloud's trusted domains automatically.
+| Client | Target | Nextcloud URL |
+|---|---|---|
+| Desktop browser | `make local` or `make mobile` | `http://localhost:8081/` |
+| iOS simulator | `make local` or `make mobile` | `http://localhost:8081/` |
+| Android emulator | `make mobile` | `http://10.0.2.2:8081/` |
+| Physical LAN device | `make mobile` | `http://<HOST_LAN_IP>:8081/` |
 
-Detection uses `ipconfig` on macOS and `ip route` on Linux. On native Windows — or any machine where detection fails — pass it explicitly:
+IP detection uses `ipconfig` on macOS and `ip route` on Linux. On native Windows — or any machine where detection fails — pass it explicitly:
 
 ```sh
-make local HOST_LAN_IP=192.168.1.50
+make mobile HOST_LAN_IP=192.168.1.50
 ```
 
 When your LAN IP changes (new wifi, tethering, etc.), update the running stack without a full rebuild:
@@ -44,6 +48,8 @@ When your LAN IP changes (new wifi, tethering, etc.), update the running stack w
 make refresh-urls
 ```
 
+Switching between `make local` and `make mobile` on an already-started stack is supported — both targets re-apply the correct URLs and trusted domains on each run.
+
 #### Building changes:
 
 - Enter the container with `docker compose exec eo bash`