Task: Strutturare design system in ui-design.pen
Summary: Restructured ui-design.pen as a complete design system with 5 organized sections (Cover, Foundations, Components, Full Layouts, Feature Specs). Created 23 reusable components (atoms: StatusDot, Separator, Badge, Button variants, Input, IconButton; molecules: InspectorHeader, NoteListItem, Tab Active/Inactive, PropertyRow, RelationshipPill, SidebarFilterItem, SectionLabel, SectionCountHeader, AddButton, RelGroupLabel, CommandPaletteItem, EditableValue; organisms: Toast, AIChatMessage). Added 34 new CSS variables (spacing scale, height constants, shadow tokens, search theme colors, traffic lights). Replaced all 82+ hardcoded hex colors with variable references (zero remaining). Organized 59 existing frames into 10 functional groups. Added 6th layout variant (Focus Mode). All 905 tests pass, build succeeds.
Commits: 2
