fix: bind to 0.0.0.0 for LAN mode instead of specific IP

view_settings.py:
- _write_server_config now always writes address = 0.0.0.0 for LAN mode
- Specific detected IP is display-only, not written to config.toml
- Fixes WinError 10049 when config.toml is shared across machines
  with different LAN IPs via git pull

view_settings.py

@@ -525,8 +525,9 @@ changes — then bookmark the IP address URL.
         if access_mode == "Localhost only":
             _write_server_config("127.0.0.1", int(port))
         else:
-            addr = lan_ip if lan_ip else "192.168.1.1"
-            _write_server_config(addr, int(port))
+            # Always bind to 0.0.0.0 so the config works on any machine
+            # regardless of its specific LAN IP
+            _write_server_config("0.0.0.0", int(port))
         st.success("Saved to config.toml — restart the app for changes to take effect.")
 
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