fix(6229): remove the Profile settings page — nothing read it

The Profile tab said an assistant used it to personalise chat and a daily
journal. Neither exists, and nothing read the profile: the page saved to
user_profiles and the backup carried it. Removed the tab, the client calls,
/api/profile, the service and the model, and migration 0123 drops the table
(downgrade recreates it empty).

Backup format v27 stops writing user_profiles; an older archive carrying the
section still restores, and the file-restore integration test now proves it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

frontend/src/views/SettingsView.vue

@@ -5,10 +5,9 @@ import { useAuthStore } from "@/stores/auth";
 import { useToastStore } from "@/stores/toast";
 import { useCanonicalSystemsStore } from "@/stores/canonicalSystems";
 import { usePlatformsStore } from "@/stores/platforms";
-import { apiGet, apiPost, apiPut, apiDelete, listGroups, createGroup, deleteGroup, listGroupMembers, addGroupMember, removeGroupMember, searchUsers, listApiKeys, createApiKey as apiCreateApiKey, revokeApiKey as apiRevokeApiKey, getProfile, updateProfile, type ApiKeyEntry, type GroupEntry, type GroupMember, type UserSearchResult, type UserProfile, apiErrorMessage } from "@/api/client";
+import { apiGet, apiPost, apiPut, apiDelete, listGroups, createGroup, deleteGroup, listGroupMembers, addGroupMember, removeGroupMember, searchUsers, listApiKeys, createApiKey as apiCreateApiKey, revokeApiKey as apiRevokeApiKey, type ApiKeyEntry, type GroupEntry, type GroupMember, type UserSearchResult, apiErrorMessage } from "@/api/client";
 import type { User } from "@/types/auth";
 import PaginationBar from "@/components/PaginationBar.vue";
-import TagInput from "@/components/TagInput.vue";
 import MomentsSettings from "@/components/MomentsSettings.vue";
 import ReplyShapesSettings from "@/components/ReplyShapesSettings.vue";
 import BackupScheduleSettings from "@/components/BackupScheduleSettings.vue";
@@ -530,7 +529,7 @@ async function copyCommit() {
 const restoreFileInput = ref<HTMLInputElement | null>(null);
 
 // Migrate stored "admin" → "config"; unknown tabs fall back to "general"
-const VALID_TABS = new Set(["general", "account", "profile", "notifications", "integrations", "data", "apikeys", "config", "users", "logs", "groups", "areas", "platforms"]);
+const VALID_TABS = new Set(["general", "account", "notifications", "integrations", "data", "apikeys", "config", "users", "logs", "groups", "areas", "platforms"]);
 const _stored = localStorage.getItem("settings_tab") ?? "general";
 const activeTab = ref(VALID_TABS.has(_stored) ? (_stored === "admin" ? "config" : _stored) : "general");
 
@@ -846,50 +845,6 @@ const searchLoading = ref(false);
 const searchError = ref("");
 
 
-// ── Profile ──────────────────────────────────────────────────────────────────
-const WORK_DAYS = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
-const profile = ref<UserProfile>({
-  display_name: '', job_title: '', industry: '',
-  expertise_level: 'intermediate', response_style: 'balanced', tone: 'casual',
-  interests: [], work_schedule: {},
-})
-const profileSaving = ref(false)
-const profileSaved = ref(false)
-
-async function loadProfile() {
-  try { profile.value = await getProfile() } catch { /* non-critical */ }
-}
-
-async function saveProfile() {
-  profileSaving.value = true
-  profileSaved.value = false
-  try {
-    profile.value = await updateProfile({
-      display_name: profile.value.display_name,
-      job_title: profile.value.job_title,
-      industry: profile.value.industry,
-      expertise_level: profile.value.expertise_level,
-      response_style: profile.value.response_style,
-      tone: profile.value.tone,
-      interests: profile.value.interests,
-      work_schedule: profile.value.work_schedule,
-    })
-    profileSaved.value = true
-    setTimeout(() => { profileSaved.value = false }, 2000)
-  } catch { toastStore.show('Failed to save profile', 'error') }
-  finally { profileSaving.value = false }
-}
-
-function toggleProfileWorkDay(day: string) {
-  const days = [...(profile.value.work_schedule.days ?? [])]
-  const idx = days.indexOf(day)
-  if (idx >= 0) days.splice(idx, 1)
-  else days.push(day)
-  profile.value.work_schedule = { ...profile.value.work_schedule, days }
-}
-
-function emptyTagsFetch(): Promise<string[]> { return Promise.resolve([]) }
-
 onMounted(async () => {
   await store.fetchSettings();
   newEmail.value = authStore.user?.email ?? "";
@@ -974,9 +929,6 @@ onMounted(async () => {
     notifySecurityAlerts.value = allSettings.notify_security_alerts !== "false";
   }
 
-  // Load user profile
-  await loadProfile();
-
   // Check SearXNG status
   try {
     const sr = await apiGet<{ configured: boolean; searxng_url: string }>("/api/settings/search");
@@ -1647,7 +1599,7 @@ async function deleteUser(userId: number) {
       <div class="sidebar-group">
         <div class="sidebar-group-label">User</div>
         <button
-          v-for="tab in ['general', 'account', 'profile', 'notifications', 'integrations', 'data', 'apikeys']"
+          v-for="tab in ['general', 'account', 'notifications', 'integrations', 'data', 'apikeys']"
           :key="tab"
           :class="['sidebar-item', { active: activeTab === tab }]"
           @click="activeTab = tab"
@@ -2366,111 +2318,6 @@ async function deleteUser(userId: number) {
     </div>
 
     <!-- ── Notifications ── -->
-    <!-- ── Profile ── -->
-    <div v-show="activeTab === 'profile'" class="settings-grid">
-      <section class="settings-section full-width">
-        <h2>About You</h2>
-        <p class="section-desc">This information is used by the assistant to personalise responses in chat and the daily journal.</p>
-        <div class="assistant-grid">
-          <div class="field">
-            <label>Display Name</label>
-            <input v-model="profile.display_name" type="text" class="fs-input input" placeholder="e.g. Alex" />
-            <p class="field-hint">How the assistant addresses you.</p>
-          </div>
-          <div class="field">
-            <label>Job Title</label>
-            <input v-model="profile.job_title" type="text" class="fs-input input" placeholder="e.g. Product Manager" />
-          </div>
-          <div class="field">
-            <label>Industry</label>
-            <input v-model="profile.industry" type="text" class="fs-input input" placeholder="e.g. Technology" />
-          </div>
-          <div class="field">
-            <label>Expertise Level</label>
-            <select v-model="profile.expertise_level" class="fs-input input">
-              <option value="novice">Novice — explain things simply</option>
-              <option value="intermediate">Intermediate — balanced explanations</option>
-              <option value="expert">Expert — assume deep knowledge</option>
-            </select>
-            <p class="field-hint">Calibrates how the assistant explains concepts.</p>
-          </div>
-        </div>
-        <div class="actions">
-          <button class="btn-primary" @click="saveProfile" :disabled="profileSaving">{{ profileSaving ? 'Saving…' : 'Save' }}</button>
-          <span v-if="profileSaved" class="saved-msg">Saved!</span>
-        </div>
-      </section>
-
-      <section class="settings-section full-width">
-        <h2>Response Preferences</h2>
-        <div class="assistant-grid">
-          <div class="field">
-            <label>Response Style</label>
-            <select v-model="profile.response_style" class="fs-input input">
-              <option value="concise">Concise — short and direct</option>
-              <option value="balanced">Balanced — default</option>
-              <option value="detailed">Detailed — thorough explanations</option>
-            </select>
-          </div>
-          <div class="field">
-            <label>Tone</label>
-            <select v-model="profile.tone" class="fs-input input">
-              <option value="casual">Casual — friendly and relaxed</option>
-              <option value="professional">Professional — formal and precise</option>
-              <option value="technical">Technical — jargon-friendly</option>
-            </select>
-          </div>
-        </div>
-        <div class="actions">
-          <button class="btn-primary" @click="saveProfile" :disabled="profileSaving">{{ profileSaving ? 'Saving…' : 'Save' }}</button>
-          <span v-if="profileSaved" class="saved-msg">Saved!</span>
-        </div>
-      </section>
-
-      <section class="settings-section full-width">
-        <h2>Interests</h2>
-        <p class="section-desc">Topics you care about — used to personalise the journal's daily prep and chat responses.</p>
-        <TagInput v-model="profile.interests" placeholder="Add an interest…" :fetchTags="emptyTagsFetch" />
-        <div class="actions">
-          <button class="btn-primary" @click="saveProfile" :disabled="profileSaving">{{ profileSaving ? 'Saving…' : 'Save' }}</button>
-          <span v-if="profileSaved" class="saved-msg">Saved!</span>
-        </div>
-      </section>
-
-      <section class="settings-section full-width">
-        <h2>Work Schedule</h2>
-        <p class="section-desc">Helps the journal understand when you're working and what's relevant each morning.</p>
-        <div class="field">
-          <label>Work Days</label>
-          <div class="day-picker">
-            <button
-              v-for="day in WORK_DAYS"
-              :key="day"
-              class="day-btn"
-              :class="{ active: (profile.work_schedule.days ?? []).includes(day) }"
-              @click="toggleProfileWorkDay(day)"
-              type="button"
-            >{{ day }}</button>
-          </div>
-        </div>
-        <div class="assistant-grid" style="margin-top:0.75rem">
-          <div class="field">
-            <label>Start Time</label>
-            <input v-model="profile.work_schedule.start" type="time" class="fs-input input" />
-          </div>
-          <div class="field">
-            <label>End Time</label>
-            <input v-model="profile.work_schedule.end" type="time" class="fs-input input" />
-          </div>
-        </div>
-        <div class="actions">
-          <button class="btn-primary" @click="saveProfile" :disabled="profileSaving">{{ profileSaving ? 'Saving…' : 'Save' }}</button>
-          <span v-if="profileSaved" class="saved-msg">Saved!</span>
-        </div>
-      </section>
-
-    </div>
-
     <div v-show="activeTab === 'notifications'" class="settings-grid">
 
       <section class="settings-section">
@@ -3724,18 +3571,6 @@ async function deleteUser(userId: number) {
   line-height: 1.5;
 }
 
-/* Assistant — 2-col internal grid */
-.assistant-grid {
-  display: grid;
-  grid-template-columns: 1fr 1fr;
-  gap: 0 1rem;
-}
-@media (max-width: 700px) {
-  .assistant-grid {
-    grid-template-columns: 1fr;
-  }
-}
-
 .field {
   margin-bottom: 1rem;
 }
@@ -3985,9 +3820,6 @@ async function deleteUser(userId: number) {
   .settings-section.full-width {
     grid-column: auto;
   }
-  .assistant-grid {
-    grid-template-columns: 1fr;
-  }
   .smtp-grid {
     grid-template-columns: 1fr;
   }
@@ -4455,32 +4287,6 @@ async function deleteUser(userId: number) {
   line-height: 1.5;
 }
 
-/* ── Profile tab ─────────────────────────────────────────────────────────── */
-.day-picker {
-  display: flex;
-  gap: 0.35rem;
-  flex-wrap: wrap;
-  margin-top: 0.35rem;
-}
-.day-btn {
-  padding: 0.3rem 0.65rem;
-  border: 1px solid var(--fs-border-color);
-  border-radius: 6px;
-  background: var(--fs-surface-raised);
-  color: var(--fs-text-tertiary);
-  font-size: 0.82rem;
-  cursor: pointer;
-  transition: all 0.15s;
-  font-family: inherit;
-}
-.day-btn:hover { border-color: var(--fs-accent); color: var(--fs-accent); }
-.day-btn.active {
-  background: color-mix(in srgb, var(--fs-accent) 15%, transparent);
-  border-color: var(--fs-accent);
-  color: var(--fs-accent-fg);
-  font-weight: 500;
-}
-
 /* ── Shared areas ──────────────────────────────────────────────────
    The slug is shown deliberately: it is what decides whether two names are
    the same area, and an admin renaming an entry needs to see it move. */