Import/export fixes, icon, and graphing

ios/OpenClimb/Views/AddEdit/AddEditProblemView.swift

@@ -95,16 +95,16 @@ struct AddEditProblemView: View {
             loadExistingProblem()
             setupInitialGym()
         }
-        .onChange(of: selectedGym) { _ in
+        .onChange(of: selectedGym) {
             updateAvailableOptions()
         }
-        .onChange(of: selectedClimbType) { _ in
+        .onChange(of: selectedClimbType) {
             updateDifficultySystem()
         }
-        .onChange(of: selectedDifficultySystem) { _ in
+        .onChange(of: selectedDifficultySystem) {
             resetGradeIfNeeded()
         }
-        .onChange(of: selectedPhotos) { _ in
+        .onChange(of: selectedPhotos) {
             Task {
                 await loadSelectedPhotos()
             }
@@ -171,7 +171,7 @@ struct AddEditProblemView: View {
 
     @ViewBuilder
     private func ClimbTypeSection() -> some View {
-        if let gym = selectedGym {
+        if selectedGym != nil {
             Section("Climb Type") {
                 ForEach(availableClimbTypes, id: \.self) { climbType in
                     HStack {
@@ -227,8 +227,13 @@ struct AddEditProblemView: View {
                     .font(.headline)
 
                 if selectedDifficultySystem == .custom || availableGrades.isEmpty {
-                    TextField("Enter custom grade", text: $difficultyGrade)
+                    TextField("Enter custom grade (numbers only)", text: $difficultyGrade)
                         .textFieldStyle(.roundedBorder)
+                        .keyboardType(.numberPad)
+                        .onChange(of: difficultyGrade) {
+                            // Filter out non-numeric characters
+                            difficultyGrade = difficultyGrade.filter { $0.isNumber }
+                        }
                 } else {
                     Menu {
                         if !difficultyGrade.isEmpty {