Initial commit: AI-driven visual novel scaffold

- Monorepo (pnpm workspace): apps/web + packages/{types,ai-client,engine}
- Next.js 16 web app with three-stage AI orchestration
- Three independently configurable providers: text LLM, image generator, vision model
- Warm minimalist editorial UI design
- One-click Vercel deploy ready

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

vercel.json

@@ -0,0 +1,10 @@
+{
+  "$schema": "https://openapi.vercel.sh/vercel.json",
+  "framework": "nextjs",
+  "buildCommand": "pnpm build",
+  "installCommand": "pnpm install",
+  "functions": {
+    "apps/web/app/api/interact/route.ts": { "maxDuration": 60 },
+    "apps/web/app/api/start/route.ts": { "maxDuration": 60 }
+  }
+}