fix: add missing /api/health endpoint for Kubernetes probes

The Kubernetes liveness and readiness probes were failing with 404
because the /api/health endpoint didn't exist, causing pods to enter
CrashLoopBackOff state.

This adds a simple health check endpoint that returns:
- HTTP 200 status
- JSON response with status and timestamp

Fixes the production deployment issue where pods were failing health
checks and restarting continuously.

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

Co-Authored-By: Claude <[email protected]>

Author: mrjasonroy

src/app/api/health/route.ts

@@ -0,0 +1,11 @@
+import { NextResponse } from "next/server";
+
+export async function GET() {
+  return NextResponse.json(
+    {
+      status: "ok",
+      timestamp: new Date().toISOString(),
+    },
+    { status: 200 },
+  );
+}

src/proxy.ts

@@ -26,6 +26,6 @@ export async function proxy(request: NextRequest) {
 
 export const config = {
   matcher: [
-    "/((?!_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt|api/auth|export|sign-in|sign-up).*)",
+    "/((?!_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt|api/auth|api/health|export|sign-in|sign-up).*)",
   ],
 };