feat: add preferredFlowPilotView to user preferences store

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

frontend/src/store/userPreferencesStore.ts

@@ -5,6 +5,7 @@ type ExportFormat = 'markdown' | 'text' | 'html' | 'psa'
 type TreeLibraryView = 'grid' | 'list' | 'table'
 type TreeSortBy = 'usage_count' | 'updated_at' | 'created_at' | 'name' | 'name_desc' | 'version'
 type EditorMode = 'form' | 'code'
+type FlowPilotView = 'flowpilot' | 'cockpit'
 
 interface UserPreferencesState {
   defaultExportFormat: ExportFormat
@@ -21,6 +22,8 @@ interface UserPreferencesState {
   toggleSidebarPinned: () => void
   dashboardMyFlowsView: TreeLibraryView
   setDashboardMyFlowsView: (view: TreeLibraryView) => void
+  preferredFlowPilotView: FlowPilotView
+  setPreferredFlowPilotView: (view: FlowPilotView) => void
 }
 
 export const useUserPreferencesStore = create<UserPreferencesState>()(
@@ -40,6 +43,8 @@ export const useUserPreferencesStore = create<UserPreferencesState>()(
       toggleSidebarPinned: () => set({ sidebarPinned: !get().sidebarPinned }),
       dashboardMyFlowsView: 'grid',
       setDashboardMyFlowsView: (view) => set({ dashboardMyFlowsView: view }),
+      preferredFlowPilotView: 'flowpilot',
+      setPreferredFlowPilotView: (view) => set({ preferredFlowPilotView: view }),
     }),
     {
       name: 'user-preferences-storage',