npm 'opencode' returns 404 (does not exist); the real package is
'opencode-ai' (v1.18.3, bin: opencode). Three docs-site pages — including the
setup guide the app's empty state and demo CTA link to — told users to run
'npm install -g opencode', which hard-fails at step 1 and bounces them before
they ever connect. Every other place in the repo already uses opencode-ai.
Verified via npm registry. Corrects guide/, landing index, and
opencode-on-phone pages.
Claude-Session: https://claude.ai/code/session_01T12AhSnQVrSxNnvwfCx2z6
Co-authored-by: engineer <engineer@macbookpro.lan>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>