feat: F021 market intelligence & signal discovery

Signal domain types, mock data (8 signals), provider interface + MockupMarketIntelligenceProvider, marketIntelligenceService, TanStack Query hooks, 10 ops components (SignalInbox, MarketSignalCard, MarketSignalFilterBar, MarketSignalSkeleton, MarketSignalEmptyState, SignalConfidenceBadge, SourceReliabilityBadge, SensitivityWarningPanel, SignalConversionPanel, SignalEvidenceList), MarketIntelligence page wired into AppShell nav and App router.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/stores/layoutStore.ts

@@ -1,22 +1,61 @@
 import { create } from 'zustand'
 import { WorkspaceType } from '../domain/enums'
 
+export const RightPanelContentType = {
+  AI_CONTEXT:      'ai_context',
+  DETAIL_PREVIEW:  'detail_preview',
+  COMPARE_PREVIEW: 'compare_preview',
+  ACTIVITY_FEED:   'activity_feed',
+} as const
+export type RightPanelContentType = typeof RightPanelContentType[keyof typeof RightPanelContentType]
+
 interface LayoutState {
   activeWorkspace: WorkspaceType
   sidebarCollapsed: boolean
   pinnedPanels: string[]
+  isRightPanelOpen: boolean
+  rightPanelContentType: RightPanelContentType | null
+  compareTrayVisible: boolean
+  selectedResultId: string | null
+  notificationsOpen: boolean
+  // Actions
   setActiveWorkspace: (workspace: WorkspaceType) => void
   toggleSidebar: () => void
   pinPanel: (panelId: string) => void
   unpinPanel: (panelId: string) => void
+  openRightPanel: (type: RightPanelContentType) => void
+  closeRightPanel: () => void
+  toggleRightPanel: (type: RightPanelContentType) => void
+  setCompareTrayVisible: (visible: boolean) => void
+  setSelectedResultId: (id: string | null) => void
+  toggleNotifications: () => void
 }
 
-export const useLayoutStore = create<LayoutState>((set) => ({
+export const useLayoutStore = create<LayoutState>((set, get) => ({
   activeWorkspace: WorkspaceType.SUPPLY,
   sidebarCollapsed: false,
   pinnedPanels: [],
+  isRightPanelOpen: false,
+  rightPanelContentType: null,
+  compareTrayVisible: false,
+  selectedResultId: null,
+  notificationsOpen: false,
+
   setActiveWorkspace: (workspace) => set({ activeWorkspace: workspace }),
-  toggleSidebar: () => set((state) => ({ sidebarCollapsed: !state.sidebarCollapsed })),
-  pinPanel: (panelId) => set((state) => ({ pinnedPanels: [...state.pinnedPanels, panelId] })),
-  unpinPanel: (panelId) => set((state) => ({ pinnedPanels: state.pinnedPanels.filter(id => id !== panelId) })),
+  toggleSidebar: () => set((s) => ({ sidebarCollapsed: !s.sidebarCollapsed })),
+  pinPanel: (panelId) => set((s) => ({ pinnedPanels: [...s.pinnedPanels, panelId] })),
+  unpinPanel: (panelId) => set((s) => ({ pinnedPanels: s.pinnedPanels.filter(id => id !== panelId) })),
+  openRightPanel: (type) => set({ isRightPanelOpen: true, rightPanelContentType: type }),
+  closeRightPanel: () => set({ isRightPanelOpen: false, rightPanelContentType: null }),
+  toggleRightPanel: (type) => {
+    const { isRightPanelOpen, rightPanelContentType } = get()
+    if (isRightPanelOpen && rightPanelContentType === type) {
+      set({ isRightPanelOpen: false, rightPanelContentType: null })
+    } else {
+      set({ isRightPanelOpen: true, rightPanelContentType: type })
+    }
+  },
+  setCompareTrayVisible: (visible) => set({ compareTrayVisible: visible }),
+  setSelectedResultId: (id) => set({ selectedResultId: id }),
+  toggleNotifications: () => set((s) => ({ notificationsOpen: !s.notificationsOpen })),
 }))