Add VitePress setup for browsing puzzle documentation

vitepress.config.js

@@ -0,0 +1,35 @@
+import { defineConfig } from 'vitepress'
+
+export default defineConfig({
+  title: 'Puzzle Design KB',
+  description: 'A handbook documenting puzzle design patterns from classic point-and-click adventure games',
+  lastUpdated: true,
+  cleanUrls: true,
+  
+  themeConfig: {
+    nav: [
+      { text: 'Index', link: '/' },
+    ],
+    
+    sidebar: [
+      {
+        text: 'Puzzle Types',
+        items: [
+          { text: 'Cross-Realm Logistics', link: '/puzzles/cross-realm-logistics' },
+          { text: 'Distraction Physics', link: '/puzzles/distraction-physics' },
+          { text: 'Environmental Storytelling', link: '/puzzles/environmental-storytelling' },
+          { text: 'Information Brokerage', link: '/puzzles/information-brokerage' },
+          { text: 'Memo Chain', link: '/puzzles/memo-chain' },
+          { text: 'Metaphor-to-Literal', link: '/puzzles/metaphor-literal' },
+          { text: 'Meta-Puzzle Construction', link: '/puzzles/meta-puzzle-construction' },
+          { text: 'Multi-Faceted Plan', link: '/puzzles/multi-faceted-plan' },
+          { text: 'Observation Replay', link: '/puzzles/observation-replay' },
+          { text: 'Pattern Learning', link: '/puzzles/pattern-learning' },
+          { text: 'Sensory Exploitation', link: '/puzzles/sensory-exploitation' },
+          { text: 'Timed Consequence', link: '/puzzles/timed-consequence' },
+          { text: 'Truth Revelation', link: '/puzzles/truth-revelation' },
+        ],
+      },
+    ],
+  },
+})