refactor(macos): move skills filter into header

apps/macos/Sources/Clawdis/SkillsSettings.swift

@@ -11,7 +11,6 @@ struct SkillsSettings: View {
     var body: some View {
         VStack(alignment: .leading, spacing: 12) {
             self.header
-            self.filterBar
             self.statusBanner
             self.skillsList
             Spacer(minLength: 0)
@@ -51,6 +50,7 @@ struct SkillsSettings: View {
                 .buttonStyle(.bordered)
                 .help("Refresh")
             }
+            self.headerFilter
         }
     }
 
@@ -103,12 +103,8 @@ struct SkillsSettings: View {
         }
     }
 
-    private var filterBar: some View {
+    private var headerFilter: some View {
-        HStack(spacing: 10) {
+        Picker("Filter", selection: self.$filter) {
-            Text("Filter")
-                .font(.caption)
-                .foregroundStyle(.secondary)
-            Picker("", selection: self.$filter) {
             ForEach(SkillsFilter.allCases) { filter in
                 Text(filter.title)
                     .tag(filter)
@@ -116,9 +112,7 @@ struct SkillsSettings: View {
         }
         .labelsHidden()
         .pickerStyle(.menu)
-            .frame(width: 160, alignment: .leading)
+        .frame(width: 160, alignment: .trailing)
-            Spacer(minLength: 0)
-        }
     }
 
     private var filteredSkills: [SkillStatus] {