refactor(pastel): remove keyboard shortcuts and useKeyboard hook

app/(app)/pastel/page.tsx

@@ -7,7 +7,6 @@ import { ColorDisplay } from '@/components/pastel/color/ColorDisplay';
 import { ColorInfo } from '@/components/pastel/color/ColorInfo';
 import { ManipulationPanel } from '@/components/pastel/tools/ManipulationPanel';
 import { useColorInfo } from '@/lib/pastel/api/queries';
-import { useKeyboard } from '@/lib/pastel/hooks/useKeyboard';
 import { useColorHistory } from '@/lib/pastel/stores/historyStore';
 import { Loader2, Share2, History, X } from 'lucide-react';
 import { Button } from '@/components/ui/Button';
@@ -58,28 +57,6 @@ function PlaygroundContent() {
     setColor(randomHex);
   };
 
-  // Keyboard shortcuts
-  useKeyboard([
-    {
-      key: 'c',
-      meta: true,
-      handler: handleCopyColor,
-      description: 'Copy color',
-    },
-    {
-      key: 's',
-      meta: true,
-      handler: handleShare,
-      description: 'Share color',
-    },
-    {
-      key: 'r',
-      meta: true,
-      handler: handleRandomColor,
-      description: 'Random color',
-    },
-  ]);
-
   return (
     <div className="min-h-screen py-12">
       <div className="max-w-7xl mx-auto px-8 space-y-8">
@@ -88,14 +65,6 @@ function PlaygroundContent() {
           <p className="text-muted-foreground">
             Interactive color manipulation and analysis tool
           </p>
-          <div className="mt-3 flex flex-wrap gap-2 text-xs text-muted-foreground">
-            <kbd className="px-2 py-1 bg-muted rounded border">⌘C</kbd>
-            <span>Copy</span>
-            <kbd className="px-2 py-1 bg-muted rounded border ml-3">⌘S</kbd>
-            <span>Share</span>
-            <kbd className="px-2 py-1 bg-muted rounded border ml-3">⌘R</kbd>
-            <span>Random</span>
-          </div>
         </div>
 
         <div className="grid grid-cols-1 lg:grid-cols-2 gap-8">