v0.17.1 - Glass CSS Fixes

Bug Fixes

Hotfix for CSS load-order issues discovered after v0.17.0.

Fixed

• Service worker: glass.css was missing from the shell cache — on already-installed PWA instances no glass effects were visible at all. Cache bumped to shell-v29.
• Widget shadow: dashboard.css (loaded on-demand after glass.css) was overriding the glass shadow on .widget with var(--shadow-sm). Glass border, shadow, and ::before highlight moved directly into dashboard.css.
• Filter chip: .filter-chip--active glass state was overridden by tasks.css. @supports backdrop-filter block moved into tasks.css.
• Priority badge: tasks.css reset .priority-badge border-radius to var(--radius-xs), losing the capsule shape. Corrected to var(--radius-glass-chip) in tasks.css.
• Dead CSS: Removed .sticky-header rule from glass.css — class is not used anywhere in the HTML.