feat(design): animated design system foundation with animate-ui and motion

Install motion + animate-ui, overhaul design tokens with brand cyan accent,
and replace CSS keyframe animations in Dialog, Tabs, Switch, and Tooltip
with spring-physics and blur-fade transitions via animate-ui Radix primitives.

backend/src/services/TemplateService.ts

@@ -248,7 +248,7 @@ export class TemplateService {
                 });
             } else {
                 // Legacy Portainer v2 Format (Fallback for custom registries)
-                // The Portainer v2 spec includes a native `categories` field — pass it through.
+                // The Portainer v2 spec includes a native `categories` field - pass it through.
                 this.cachedTemplates = (response.data.templates || [])
                     .filter((t: Template) => !!t.image && t.type === 1)
                     .map((t: Template) => ({ ...t, source: 'custom' }));