Import/export fixes, icon, and graphing

ios/OpenClimb/Views/AddEdit/AddAttemptView.swift

@@ -76,10 +76,10 @@ struct AddAttemptView: View {
         .onAppear {
             setupInitialValues()
         }
-        .onChange(of: selectedClimbType) { _ in
+        .onChange(of: selectedClimbType) {
             updateDifficultySystem()
         }
-        .onChange(of: selectedDifficultySystem) { _ in
+        .onChange(of: selectedDifficultySystem) {
             resetGradeIfNeeded()
         }
     }
@@ -182,8 +182,12 @@ struct AddAttemptView: View {
             }
 
             if selectedDifficultySystem == .custom {
-                TextField("Grade (Required)", text: $newProblemGrade)
+                TextField("Grade (Required - numbers only)", text: $newProblemGrade)
                     .keyboardType(.numberPad)
+                    .onChange(of: newProblemGrade) {
+                        // Filter out non-numeric characters
+                        newProblemGrade = newProblemGrade.filter { $0.isNumber }
+                    }
             } else {
                 VStack(alignment: .leading, spacing: 8) {
                     Text("Grade (Required)")
@@ -526,7 +530,7 @@ struct EditAttemptView: View {
     }
 
     private func updateAttempt() {
-        guard let problem = selectedProblem else { return }
+        guard selectedProblem != nil else { return }
 
         let updatedAttempt = attempt.updated(
             result: selectedResult,

ios/OpenClimb/Views/AddEdit/AddEditGymView.swift

@@ -67,7 +67,7 @@ struct AddEditGymView: View {
         .onAppear {
             loadExistingGym()
         }
-        .onChange(of: selectedClimbTypes) { _ in
+        .onChange(of: selectedClimbTypes) {
             updateAvailableDifficultySystems()
         }
     }

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 {