feat: Add animation dependencies and design system structure

Installs @react-spring/web, framer-motion, and lodash to support the new visual design system. Creates the foundational directory structure and skeleton files for design tokens and animations.

Author: google-labs-jules[bot]

hooks/useSwipeGesture.ts

@@ -51,8 +51,11 @@
     "@emotion/styled": "^11.14.1",
     "@mui/icons-material": "^5.15.0",
     "@mui/material": "^5.18.0",
+    "@react-spring/web": "^10.0.3",
     "@spotify/web-api-ts-sdk": "^1.2.0",
     "express": "^5.1.0",
+    "framer-motion": "^12.23.24",
+    "lodash": "^4.17.21",
     "next": "16.0.1",
     "next-auth": "^4.24.13",
     "pino": "^10.1.0",
@@ -74,6 +77,7 @@
     "@testing-library/user-event": "^14.6.1",
     "@types/express": "^5.0.5",
     "@types/jest": "^30.0.0",
+    "@types/lodash": "^4.17.21",
     "@types/next": "^8.0.7",
     "@types/node": "^24.10.1",
     "@types/react": "^19.2.6",