Restore codebase deleted by bad auto-commit e4227cf

Commit e4227cf (a story creation auto-commit) erroneously deleted 175
files from master's tree, likely due to a race condition between
concurrent git operations. This commit re-adds all files from the
working directory.

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

frontend/src/vite-env.d.ts

@@ -0,0 +1,14 @@
+/// <reference types="vite/client" />
+
+declare global {
+	const __BUILD_TIME__: string;
+}
+
+declare module "react" {
+	interface InputHTMLAttributes<T> {
+		webkitdirectory?: string;
+		directory?: string;
+	}
+}
+
+export {};