fix(pre-M3): root page 500 — guard auth() for Clerk test mode

[parva3105]

Root cause

`await auth()` was called unguarded in the `app/page.tsx` Server Component. In Clerk test mode (`pk_test_*` keys), Clerk throws when the dev-browser cookie is absent — crashing the page with a 500.

`/login` and `/signup` were unaffected because they are `'use client'` components that never call `auth()` server-side.

Fix

Wrap `auth()` in `try/catch`. If it throws, `role` stays `undefined` and the landing page renders normally. The `redirect()` calls remain outside the try-catch so Next.js's `NEXT_REDIRECT` error still propagates correctly.

let role: string | undefined;
try {
  const { sessionClaims } = await auth();
  role = (sessionClaims?.metadata as { role?: string })?.role;
} catch {
  // Fall through — show landing page
}
if (role === "agency") redirect("/dashboard");

Checklist

• npm run typecheck — zero errors
• npm run lint — zero errors (3 pre-existing react-hook-form warnings)
• / will now render the landing page for unauthenticated visitors
• Authenticated users with a valid role JWT are still redirected server-side

🤖 Generated with Claude Code

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Project	Deployment	Actions	Updated (UTC)
project-alpha	Ready	Preview, Comment	Mar 20, 2026 8:57pm