feat(frontend): micro-interactions — page-enter transition + MetricTile lift

- Add animate-fade-up utility (reduced-motion aware) and a PageTransition
  wrapper; every dashboard view now rises + settles on mount/route change.
- MetricTile gains a subtle hover lift (-translate-y) + ring-focus glow.
- Theme toggle and command palette (⌘K) already existed and persist; no-op.

services/frontend/src/app/(dashboard)/analysis/page.tsx

@@ -1,7 +1,12 @@
+import { PageTransition } from "@/components/shared";
 import { AnalysisView } from "./view";
 
 export const dynamic = "force-dynamic";
 
 export default function AnalysisPage() {
-  return <AnalysisView />;
+  return (
+    <PageTransition>
+      <AnalysisView />
+    </PageTransition>
+  );
 }