feat: structure

frontend/src/App.tsx

@@ -0,0 +1,59 @@
+import { useState } from 'react'
+import { Timeline } from './components/timeline/Timeline'
+import { LeftSidebar } from './components/layout/LeftSidebar'
+import { RightSidebar } from './components/layout/RightSidebar'
+import { TopBar } from './components/layout/TopBar'
+import { usePhotoStore } from './store/photoStore'
+import { useKeyboardShortcuts } from './hooks/useKeyboardShortcuts'
+
+function App() {
+  const [leftSidebarOpen, setLeftSidebarOpen] = useState(true)
+  const [rightSidebarOpen, setRightSidebarOpen] = useState(false)
+  const selectedPhotos = usePhotoStore((state) => state.selectedPhotos)
+
+  // Set up global keyboard shortcuts
+  useKeyboardShortcuts({
+    onToggleLeftSidebar: () => setLeftSidebarOpen(!leftSidebarOpen),
+    onToggleRightSidebar: () => setRightSidebarOpen(!rightSidebarOpen),
+  })
+
+  // Show right sidebar when photos are selected
+  if (selectedPhotos.length > 0 && !rightSidebarOpen) {
+    setRightSidebarOpen(true)
+  } else if (selectedPhotos.length === 0 && rightSidebarOpen) {
+    setRightSidebarOpen(false)
+  }
+
+  return (
+    <div className="flex flex-col h-screen bg-bg text-text">
+      <TopBar />
+      
+      <div className="flex flex-1 overflow-hidden">
+        {/* Left Sidebar */}
+        <div
+          className={`transition-all duration-200 ${
+            leftSidebarOpen ? 'w-64' : 'w-0'
+          } overflow-hidden border-r border-border bg-surface`}
+        >
+          <LeftSidebar />
+        </div>
+
+        {/* Main Content - Timeline */}
+        <div className="flex-1 overflow-auto">
+          <Timeline />
+        </div>
+
+        {/* Right Sidebar */}
+        <div
+          className={`transition-all duration-200 ${
+            rightSidebarOpen ? 'w-80' : 'w-0'
+          } overflow-hidden border-l border-border bg-surface`}
+        >
+          <RightSidebar />
+        </div>
+      </div>
+    </div>
+  )
+}
+
+export default App

frontend/src/index.css

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+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+@layer base {
+  :root {
+    --color-bg: #111110;
+    --color-surface: #161615;
+    --color-surface-2: #1c1c1a;
+    --color-surface-offset: #222220;
+    --color-border: rgba(255, 255, 255, 0.08);
+    --color-text: #e8e6e0;
+    --color-text-muted: #878580;
+    --color-text-faint: #4a4845;
+    --color-primary: #4f98a3;
+    --color-pick: #4f9e5c;
+    --color-reject: #c25a5a;
+    --color-star: #d4a340;
+  }
+
+  body {
+    @apply bg-bg text-text;
+    font-family: 'Geist', system-ui, sans-serif;
+  }
+}
+
+/* Custom scrollbar styles */
+::-webkit-scrollbar {
+  width: 8px;
+  height: 8px;
+}
+
+::-webkit-scrollbar-track {
+  @apply bg-surface;
+}
+
+::-webkit-scrollbar-thumb {
+  @apply bg-surface-offset rounded;
+}
+
+::-webkit-scrollbar-thumb:hover {
+  @apply bg-text-faint;
+}

frontend/src/main.tsx

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+import React from 'react'
+import ReactDOM from 'react-dom/client'
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
+import { ReactQueryDevtools } from '@tanstack/react-query-devtools'
+import App from './App'
+import './index.css'
+
+const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      staleTime: 5 * 60 * 1000, // 5 minutes
+      retry: 2,
+    },
+  },
+})
+
+ReactDOM.createRoot(document.getElementById('root')!).render(
+  <React.StrictMode>
+    <QueryClientProvider client={queryClient}>
+      <App />
+      <ReactQueryDevtools initialIsOpen={false} />
+    </QueryClientProvider>
+  </React.StrictMode>,
+)