v0.7.2 - Accessibility improvements

Accessibility

• Rename #page-content to #main-content so the existing skip-to-content link targets the semantic <main> landmark correctly
• Add sr-only priority labels to dashboard task items - screen readers now announce priority level instead of relying on color alone (WCAG 1.4.1)

Fixed

• Replace hardcoded hex values in greeting widget gradient with --color-accent-active / --color-accent tokens - dark mode now correctly themes the greeting banner
• Replace hardcoded gap: 2px with --space-0h token in greeting widget

Full Changelog: v0.7.1...v0.7.2