Simplified My Profile authentication flows, fixed some UX issues with reauth cancelled/accepted leading to incorrect states.

frontend/src/components/RegistrationLinkModal.vue

@@ -37,7 +37,7 @@
 <script setup>
 import { ref, computed, onMounted, onUnmounted, nextTick } from 'vue'
 import QRCodeDisplay from '@/components/QRCodeDisplay.vue'
-import { apiJson, holdGlobalBackdrop, releaseGlobalBackdrop } from 'paskia'
+import { apiJson, AuthCancelledError, holdGlobalBackdrop, releaseGlobalBackdrop } from 'paskia'
 import { formatDate } from '@/utils/helpers'
 import { getDirection } from '@/utils/keynav'
 import { useAuthStore } from '@/stores/auth'
@@ -90,7 +90,9 @@ async function generateLink() {
       emit('close')
     }
   } catch (e) {
-    authStore.showMessage(e.message || 'Failed to generate link', 'error')
+    if (!(e instanceof AuthCancelledError)) {
+      authStore.showMessage(e.message || 'Failed to generate link', 'error')
+    }
     emit('close')
   }
 }

frontend/src/utils/api.js

@@ -1,32 +0,0 @@
-// Cache for auth iframe URL by mode
-const authIframeUrlCache = {}
-
-/**
- * Get the auth iframe URL for a given mode.
- * Fetches from /auth/api/forward which returns URL in the auth.iframe field.
- * Results are cached per mode.
- * @param {string} mode - The auth mode ('login', 'reauth', 'forbidden')
- * @returns {Promise<string>} - The URL for the iframe
- */
-export async function getAuthIframeUrl(mode = 'login') {
-  if (authIframeUrlCache[mode]) {
-    return authIframeUrlCache[mode]
-  }
-
-  // Fetch from forward endpoint - it returns URL in auth.iframe on 401/403
-  const response = await fetch('/auth/api/forward')
-  if (response.status === 401 || response.status === 403) {
-    const data = await response.json()
-    if (data.auth?.iframe) {
-      // The iframe field now contains a URL with hash fragment
-      // If mode differs, update the hash param
-      let url = data.auth.iframe
-      if (mode !== data.auth.mode) {
-        url = url.replace(/mode=[^&]*/, `mode=${mode}`)
-      }
-      authIframeUrlCache[mode] = url
-      return url
-    }
-  }
-  throw new Error('Unable to fetch auth iframe URL')
-}