Apex Notes v0.1.5

Responsive desktop layout fix for narrow app windows.\n\n- Keeps the welcome screen actions side by side instead of switching into a scrolling stack.\n- Keeps the graph/editor workspace side by side at the native desktop minimum width.\n- Adds Playwright as a dev dependency for fast responsive screenshot checks.\n\nVerified with npm test, cargo test, Playwright breakpoint screenshots, hdiutil DMG verification, and a fresh local /Applications install.