add support for network calculation from the calculator

lib/components/pages/new_entry/new_entry_page.dart

@@ -1399,16 +1399,18 @@ class _NewEntryPageState extends State<NewEntryPage> {
                   singleColumn: true,
                 ),
               ),
-              const Divider(height: 24),
-              TextFormField(
-                controller: _networkController,
-                textCapitalization: TextCapitalization.characters,
-                inputFormatters: const [_UpperCaseTextFormatter()],
-                decoration: const InputDecoration(
-                  labelText: 'Network',
-                  border: OutlineInputBorder(),
+              if (_useManualMileage) ...[
+                const Divider(height: 24),
+                TextFormField(
+                  controller: _networkController,
+                  textCapitalization: TextCapitalization.characters,
+                  inputFormatters: const [_UpperCaseTextFormatter()],
+                  decoration: const InputDecoration(
+                    labelText: 'Network',
+                    border: OutlineInputBorder(),
+                  ),
                 ),
-              ),
+              ],
               TextFormField(
                 controller: _notesController,
                 maxLines: 3,
@@ -1520,6 +1522,9 @@ class _NewEntryPageState extends State<NewEntryPage> {
                 onSelected: (val) {
                   setState(() {
                     _useManualMileage = val;
+                    if (!val) {
+                      _networkController.clear();
+                    }
                     if (val && _routeResult != null) {
                       _mileageController.text = _formatDistance(
                         distanceUnitService,

lib/components/pages/new_entry/new_entry_submit_logic.dart

@@ -18,7 +18,7 @@ extension _NewEntrySubmitLogic on _NewEntryPageState {
       }
     }
 
-    if (_networkController.text.trim().isEmpty) {
+    if (_useManualMileage && _networkController.text.trim().isEmpty) {
       missing.add('Network');
     }
 
@@ -93,7 +93,7 @@ extension _NewEntrySubmitLogic on _NewEntryPageState {
     final isEditingExisting = _isEditing && widget.editLegId != null;
 
     try {
-      final commonPayload = {
+    final commonPayload = {
         if (isEditingExisting) "leg_id": widget.editLegId,
         "leg_trip": _selectedTripId,
         "leg_begin_time": _legDateTime.toIso8601String(),
@@ -104,7 +104,8 @@ extension _NewEntrySubmitLogic on _NewEntryPageState {
           "leg_destination_time": destinationTime.toIso8601String(),
         "leg_notes": _notesController.text.trim(),
         "leg_headcode": _headcodeController.text.trim(),
-        "leg_network": _networkController.text.trim(),
+        if (_useManualMileage)
+          "leg_network": _networkController.text.trim(),
         "leg_origin": _originController.text.trim(),
         "leg_destination": _destinationController.text.trim(),
         "leg_begin_delay": beginDelay,