3x2 grid layout (was 2x2). New cards: "Import your cookies" (click
🍪 Cookies to import login sessions from Chrome/Arc/Brave) and
"Or use your main agent" (your Claude Code terminal also controls
this browser). Responsive: 3 cols > 2 cols > 1 col.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Previously the welcome page arrow hid immediately when the extension's
content script loaded — but extension loaded ≠ sidebar open. Now the
signal flow is: sidepanel connects → tells background.js → relays to
content script → dispatches gstack-extension-ready → arrow hides.
Adds welcome-page.test.ts: 14 tests verifying arrow, branding, feature
cards, dark theme, and auto-hide behavior via real HTTP server.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Garry Tan