* feat(types): add labels to UserProfile type and update mocks * test(profile-labels): add failing tests for label pill component 7 tests covering: empty array returns null, self-label neutral styling, self-label warning styling, moderator label with ShieldCheck icon, moderator warning label with ShieldWarning icon, ! prefix stripping, and multiple labels rendering. * feat(profile-labels): implement label pill component with 4 visual variants Self-labels: neutral (bg-muted) or warning (orange). Moderator labels: info with ShieldCheck (purple) or warning with ShieldWarning (red). Strips ! prefix from display text. Returns null for empty arrays. * feat(profile-header): integrate AT Protocol labels display