Initial commit: PastPaper Master full stack

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/main.tsx

@@ -0,0 +1,16 @@
+import { StrictMode } from "react";
+import { createRoot } from "react-dom/client";
+import { BrowserRouter } from "react-router-dom";
+import App from "./App";
+import { AuthProvider } from "./contexts/AuthContext";
+import "./styles/globals.css";
+
+createRoot(document.getElementById("root")!).render(
+  <StrictMode>
+    <BrowserRouter>
+      <AuthProvider>
+        <App />
+      </AuthProvider>
+    </BrowserRouter>
+  </StrictMode>,
+);