Ticket #81 PR #33 Review: pass_audit approved Phase 1: Foundation - Navigation, Quick Actions, and Visual Polish. New Components: 1. Command Palette (Cmd/Ctrl+K) - Global search for navigation 2. Keyboard Shortcuts Modal (?) - Shows documented shortcuts 3. Breadcrumb Controller - Dynamic breadcrumb rendering 4. Loading Skeletons - list, ticket, stats types with pulse animation 5. Empty State Component - Configurable icon, title, message, action button Micro-interactions (CSS): - Fade-in animation (0.3s) - Slide-up animation for cards/modals - Subtle pulse for attention - Shimmer effect for skeletons - Hover lift effect (-4px translate) - Button press scale (0.95) - Navigation link underline animation - Smooth transitions (all <200ms) Acceptance criteria all met: - ✓ Command palette works via Cmd/Ctrl+K - ✓ Keyboard shortcuts with in-app hints ("?" to open help modal) - ✓ Breadcrumb controller available for detail pages - ✓ Loading skeletons implemented (list, ticket, stats types) - ✓ Empty state component with configurable options - ✓ Micro-interactions polished