#1322 feat(web): rebuild the register page side column for conversion

Why

The column next to the sign-up form was a rotating carousel showing one long quote at a time, with eight dots and three generic taglines. It didn't answer the two questions that hold back a sign-up: how much work comes after it, and who else uses Capgo.

What changed

• From sign-up to your first live update: three numbered steps (create your account, run npx @capgo/cli@latest init, push fixes without store review).
• Trust line: "Trusted by 9,400+ teams · 90M+ devices · GitHub stars", with eight customer apps (Kick, Vaia, Suez, Nana, Snowqueen, StyleSeat, Huckleberry, SuperFrete) and their store install counts, from config/customerApps.ts.
• Reviews: two named reviews (drivolino GmbH, Tellent; capgoReviews) shown together and static, with the rating summary. The carousel script and styles are removed.
• Both columns align to the top. New copy keys were added to all three copy files.

Checks

• Rendered locally at 1440px (two reviews side by side) and 390px (the column stacks under the form).
• astro check: 0 errors. bun test src/scripts/register.test.ts: 6 pass.

🤖 Generated with Claude Code

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Summary by CodeRabbit

• New Features
  • The registration page now includes a three-step signup guide covering account setup, app registration, and shipping web-layer fixes.
  • Company, device, and GitHub statistics are displayed alongside featured customer apps and reviews.
  • The reviews section includes an accessible label.