test(fixtures): add vite-kitchen fixture repo

Minimal Vite + React + TS + Tailwind app with a typed-props Button
component (the future react-docgen-typescript scan target), landed at
fixtures/ outside the pnpm workspace and turbo graph. Its dependencies
exist on paper only — the runner installs them after cloning (story 04);
no lockfile, never pnpm-installed here.

Ignore surfaces follow the docs/product/reference precedent: fallow,
root ESLint, prettier, and the coverage:diff ALLOWED_GLOBS all skip
fixtures/**.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016j8z4VHjedXDTjEDNg7qHK

.fallowrc.json

@@ -10,7 +10,8 @@
     "**/turbo/generators/templates/**",
     "**/*.generated.ts",
     "**/*.d.ts",
-    "docs/product/reference/**"
+    "docs/product/reference/**",
+    "fixtures/**"
   ],
   "dynamicallyLoaded": [
     "packages/**/__factories__/**",