🎨 Palette: Add accessibility and tooltips to webhook header buttons

.Jules/palette.md

@@ -8,3 +8,7 @@
 ## 2026-06-06 - Ensure Symmetry in Accessibility and Tooltips for SwiftUI Icon Buttons
 **Learning:** In macOS SwiftUI applications, icon-only buttons often have either `.help()` (for hover tooltips) or `.accessibilityLabel()` (for VoiceOver), but frequently lack both. Both are necessary because they serve different user interaction models—`.help` for visual hover feedback and `.accessibilityLabel` for screen readers.
 **Action:** When adding or reviewing icon-only buttons in SwiftUI, always ensure symmetry by defining both `.help("Description")` and `.accessibilityLabel("Description")` to cover all accessibility and usability vectors.
+
+## 2024-05-19 - [Missing Accessibility on Dynamic Form Dictionary Buttons]
+**Learning:** Icon-only buttons used for adding/removing items in dynamic dictionary forms (e.g., webhook headers with `plus.circle.fill` and `minus.circle.fill`) are frequent vectors for missing accessibility labels and tooltips, because they are often implemented with plain button styles without considering screen reader context.
+**Action:** Always verify that inline addition/removal buttons in repeated form elements have explicit `.help()` and `.accessibilityLabel()` modifiers attached to them to ensure they can be understood and navigated accurately by all users.

XboxControllerMapper/XboxControllerMapper/Views/MainWindow/ActionMappingEditor.swift

@@ -380,6 +380,8 @@ struct ActionMappingEditor: View {
                                 .foregroundColor(.red)
                         }
                         .buttonStyle(.plain)
+                        .help("Remove header")
+                        .accessibilityLabel("Remove header")
                     }
                 }
 
@@ -401,6 +403,8 @@ struct ActionMappingEditor: View {
                             .foregroundColor(.green)
                     }
                     .buttonStyle(.plain)
+                    .help("Add header")
+                    .accessibilityLabel("Add header")
                     .disabled(state.newWebhookHeaderKey.isEmpty)
                 }
             }

XboxControllerMapper/XboxControllerMapper/Views/MainWindow/ChordMappingSheet.swift

@@ -624,6 +624,8 @@ struct ChordMappingSheet: View, ControllerTypeProviding {
                                         .foregroundColor(.red)
                                 }
                                 .buttonStyle(.plain)
+                                .help("Remove header")
+                                .accessibilityLabel("Remove header")
                             }
                         }
 
@@ -645,6 +647,8 @@ struct ChordMappingSheet: View, ControllerTypeProviding {
                                     .foregroundColor(.green)
                             }
                             .buttonStyle(.plain)
+                            .help("Add header")
+                            .accessibilityLabel("Add header")
                             .disabled(newWebhookHeaderKey.isEmpty)
                         }
                     }