feat(client): add protected route handling with login redirect

Unauthenticated users accessing protected pages (like HomePage) are
now redirected to the login page. Includes ProtectedRoute component
with loading state support.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

1 files changed, 1 insertions, 0 deletions

diff --git a/src/client/components/index.ts b/src/client/components/index.ts
new file mode 100644
index 0000000..9b97620
--- /dev/null
+++ b/src/client/components/index.ts
@@ -0,0 +1 @@
+export { ProtectedRoute } from "./ProtectedRoute";