You can now join the waitlist for Projects, Skill Labs, and the iOS app

Every nav link on the site was checked end to end — no 404s, no broken redirects, nothing quietly failing. The two still-unbuilt destinations, Projects and Skill Labs, were already labeled clearly as "Coming Soon" rather than looking broken, so nothing needed fixing there.

What was missing: any way to actually say "let me know when this ships." Projects, Skill Labs, and the homepage's iOS teaser now all have an opt-in signup — an email address and an explicit checkbox, nothing pre-checked, nothing assumed. It's the same shared form on all three, so they behave identically, and submitting twice for the same thing is treated as a normal no-op rather than an error.