fix: Add button moved to sticky bottom bar — always tappable on first tap

- Button outside ScrollView using safeAreaInset(edge: .bottom)
- No more scroll gesture eating the first tap
- scrollDismissesKeyboard(.immediately) for keyboard handling
- Swipe to delete on meal entries

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ios/Platform/Platform/Features/Fitness/Views/AddFoodSheet.swift

@@ -165,8 +165,12 @@ struct AddFoodSheet: View {
                             .font(.caption)
                             .foregroundStyle(.red)
                     }
-
-                    // Add button
+                }
+                .padding()
+            }
+            .scrollDismissesKeyboard(.immediately)
+            .background(Color.canvas)
+            .safeAreaInset(edge: .bottom) {
                 Button {
                     addEntry()
                 } label: {
@@ -184,10 +188,10 @@ struct AddFoodSheet: View {
                 .foregroundStyle(.white)
                 .clipShape(RoundedRectangle(cornerRadius: 12))
                 .disabled(isAdding)
-                }
-                .padding()
-            }
+                .padding(.horizontal)
+                .padding(.bottom, 8)
                 .background(Color.canvas)
+            }
             .navigationTitle("Add Food")
             .navigationBarTitleDisplayMode(.inline)
             .toolbar {