Initial commit: full-stack Bun + Elysia + React template

Elysia.js API with session-based auth (email/password + Google OAuth),
role system (USER/ADMIN/SUPER_ADMIN), Prisma + PostgreSQL, React 19
with Mantine UI, TanStack Router, dark theme, and comprehensive test
suite (unit, integration, E2E with Lightpanda).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/react.svg

@@ -0,0 +1,8 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="-11.5 -10.23174 23 20.46348">
+  <circle cx="0" cy="0" r="2.05" fill="#61dafb"/>
+  <g stroke="#61dafb" stroke-width="1" fill="none">
+    <ellipse rx="11" ry="4.2"/>
+    <ellipse rx="11" ry="4.2" transform="rotate(60)"/>
+    <ellipse rx="11" ry="4.2" transform="rotate(120)"/>
+  </g>
+</svg>