Return to where you signed in from, and take motion 12.42.2

Post-login landed on the home page. Spring only remembers the pre-login location when it
BOUNCES you off a protected page, but every route here is public — the SPA sends you to the
identity provider itself — so nothing is saved and login defaults to '/'. AuthProvider now
stashes the current path in sessionStorage before the redirect and navigates back once /api/me
confirms the session. sessionStorage, not a query parameter: it survives the redirect chain,
stays in this tab, and cannot be pointed at another site. Sign-in is only ever triggered from
an /admin route, so that is exactly where the reader is returned.

Also merges the motion 12.42.2 bump, which had stayed open on its own PR.

frontend/package-lock.json

@@ -8,7 +8,7 @@
       "name": "itsthevine-frontend",
       "version": "0.1.0",
       "dependencies": {
-        "motion": "12.34.4",
+        "motion": "12.42.2",
         "react": "^19.2.7",
         "react-dom": "^19.2.7",
         "react-router-dom": "7.18.1"
@@ -1847,13 +1847,13 @@
       }
     },
     "node_modules/framer-motion": {
-      "version": "12.34.4",
-      "resolved": "https://registry.npmjs.org/framer-motion/-/framer-motion-12.34.4.tgz",
-      "integrity": "sha512-q1PwNhc1XJ3qYG7nc9+pEU5P3tnjB6Eh9vv5gGzy61nedDLB4+xk5peMCWhKM0Zn6sfhgunf/q9n0UgCoyKOBA==",
+      "version": "12.42.2",
+      "resolved": "https://registry.npmjs.org/framer-motion/-/framer-motion-12.42.2.tgz",
+      "integrity": "sha512-5XY9luDiu0oHfHBjpDthFMh0ES+122w6p/papSJBweMkO8Sn+PW2QaEgRblQBpWFnuvZS5qvarpt/hO2pjGmnw==",
       "license": "MIT",
       "dependencies": {
-        "motion-dom": "^12.34.3",
-        "motion-utils": "^12.29.2",
+        "motion-dom": "^12.42.2",
+        "motion-utils": "^12.39.0",
         "tslib": "^2.4.0"
       },
       "peerDependencies": {
@@ -2301,12 +2301,12 @@
       }
     },
     "node_modules/motion": {
-      "version": "12.34.4",
-      "resolved": "https://registry.npmjs.org/motion/-/motion-12.34.4.tgz",
-      "integrity": "sha512-J0cuDNRymNzE0M2WY8CFcbQuprHBZwY+iqADKGLLe6kQUVP4kBQ2l7Z6gWK7Zfrt5Wgxs+kCojj4qu7I4wxBIw==",
+      "version": "12.42.2",
+      "resolved": "https://registry.npmjs.org/motion/-/motion-12.42.2.tgz",
+      "integrity": "sha512-Atvv11yUKIid41cVrRBDVX5m8tF8kNpExRSlbpt6APClhDjtwQssgFHhQzejxw7/7YYbjHSPKBVbHo05BuJT5Q==",
       "license": "MIT",
       "dependencies": {
-        "framer-motion": "^12.34.4",
+        "framer-motion": "^12.42.2",
         "tslib": "^2.4.0"
       },
       "peerDependencies": {