rewrite liveline page to Playwriter content, update skill docs, add OG image
liveline.tsx: replace Liveline chart library content with Playwriter product page.
Sections now cover getting started, architecture, snapshots, visual labels,
sessions, debugger/editor, network interception, screen recording, comparison
tables, remote access, and security.
skill.md: clarify page reuse rules (reusing about:blank is fine), fix download
path to /tmp instead of ./ for cross-platform safety.
Add og-errore-vs-effect.png for errore comparison page.
Tommy D. Rossi
35c885b199
