fix(auth): восстанавливать раздел и фильтры после входа Portal

app/auth/callback/page.tsx

@@ -5,15 +5,18 @@ import { useRouter } from "next/navigation"
 import {
   clearPortalHandoffFlag,
   clearToken,
+  can,
   ensureAuthConfig,
   firstAllowedPath,
   getClaims,
   getToken,
   parseHashToken,
+  permissionForPath,
   redirectToPortalLogin,
   redirectToPortalLoginInteractive,
   setToken,
 } from "@/lib/auth"
+import { permittedAuthReturnPath } from "@/lib/auth-return-path"
 
 export default function AuthCallbackPage() {
   const router = useRouter()
@@ -28,6 +31,10 @@ export default function AuthCallbackPage() {
 
       const params = new URLSearchParams(window.location.search)
       const error = params.get("error")
+      const returnPath = () => permittedAuthReturnPath(params.get("next"), pathname => {
+        const permission = permissionForPath(pathname)
+        return !permission || can(permission)
+      }, firstAllowedPath())
       if (error === "sso_loop" || error === "jwt_rejected") {
         redirectToPortalLoginInteractive()
         return
@@ -62,7 +69,7 @@ export default function AuthCallbackPage() {
           /* ignore network — proceed */
         }
 
-        const next = firstAllowedPath()
+        const next = returnPath()
         if (next === "/access-denied") {
           router.replace("/access-denied")
           return
@@ -77,11 +84,13 @@ export default function AuthCallbackPage() {
           router.replace("/access-denied")
           return
         }
-        router.replace(firstAllowedPath())
+        router.replace(returnPath())
         return
       }
 
-      const ok = redirectToPortalLogin(`${window.location.origin}/auth/callback`)
+      const callback = new URL(`${window.location.origin}/auth/callback`)
+      if (params.get("next")) callback.searchParams.set("next", params.get("next")!)
+      const ok = redirectToPortalLogin(callback.toString())
       if (!ok) redirectToPortalLoginInteractive()
     })()