diff --git a/package.json b/package.json
index 8c4f1f65..722c0756 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hermes-web-ui",
-  "version": "0.4.2",
+  "version": "0.4.3",
   "description": "Web dashboard for Hermes Agent — multi-platform AI chat, session management, scheduled jobs, usage analytics & channel configuration (Telegram, Discord, Slack, WhatsApp)",
   "repository": {
     "type": "git",
diff --git a/packages/client/src/api/auth.ts b/packages/client/src/api/auth.ts
new file mode 100644
index 00000000..92bb213b
--- /dev/null
+++ b/packages/client/src/api/auth.ts
@@ -0,0 +1,53 @@
+import { request } from './client'
+
+export interface AuthStatus {
+  hasPasswordLogin: boolean
+  username: string | null
+}
+
+export async function fetchAuthStatus(): Promise<AuthStatus> {
+  const res = await fetch('/api/auth/status')
+  if (!res.ok) throw new Error('Failed to fetch auth status')
+  return res.json()
+}
+
+export async function loginWithPassword(username: string, password: string): Promise<string> {
+  const res = await fetch('/api/auth/login', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ username, password }),
+  })
+  if (!res.ok) {
+    const data = await res.json().catch(() => ({}))
+    throw new Error(data.error || 'Login failed')
+  }
+  const data = await res.json()
+  return data.token
+}
+
+export async function setupPassword(username: string, password: string): Promise<void> {
+  return request('/api/auth/setup', {
+    method: 'POST',
+    body: JSON.stringify({ username, password }),
+  })
+}
+
+export async function changePassword(currentPassword: string, newPassword: string): Promise<void> {
+  return request('/api/auth/change-password', {
+    method: 'POST',
+    body: JSON.stringify({ currentPassword, newPassword }),
+  })
+}
+
+export async function changeUsername(currentPassword: string, newUsername: string): Promise<void> {
+  return request('/api/auth/change-username', {
+    method: 'POST',
+    body: JSON.stringify({ currentPassword, newUsername }),
+  })
+}
+
+export async function removePassword(): Promise<void> {
+  return request('/api/auth/password', {
+    method: 'DELETE',
+  })
+}
diff --git a/packages/client/src/components/hermes/settings/AccountSettings.vue b/packages/client/src/components/hermes/settings/AccountSettings.vue
new file mode 100644
index 00000000..038972b9
--- /dev/null
+++ b/packages/client/src/components/hermes/settings/AccountSettings.vue
@@ -0,0 +1,258 @@
+<script setup lang="ts">
+import { ref, onMounted } from "vue";
+import { NButton, NInput, NModal, NForm, NFormItem, NPopconfirm, useMessage } from "naive-ui";
+import { useI18n } from "vue-i18n";
+import { fetchAuthStatus, setupPassword, changePassword, changeUsername, removePassword } from "@/api/auth";
+
+const { t } = useI18n();
+const message = useMessage();
+
+const hasPasswordLogin = ref(false);
+const username = ref<string | null>(null);
+const loading = ref(false);
+
+// Setup form
+const showSetupModal = ref(false);
+const setupUsername = ref("");
+const setupPasswordVal = ref("");
+const setupPasswordConfirm = ref("");
+
+// Change password form
+const showChangePasswordModal = ref(false);
+const currentPasswordForPwd = ref("");
+const newPasswordVal = ref("");
+const newPasswordConfirm = ref("");
+
+// Change username form
+const showChangeUsernameModal = ref(false);
+const currentPasswordForName = ref("");
+const newUsernameVal = ref("");
+
+onMounted(async () => {
+  try {
+    const status = await fetchAuthStatus();
+    hasPasswordLogin.value = status.hasPasswordLogin;
+    username.value = status.username;
+  } catch { /* ignore */ }
+});
+
+async function handleSetup() {
+  if (setupPasswordVal.value !== setupPasswordConfirm.value) {
+    message.error(t("login.passwordMismatch"));
+    return;
+  }
+  if (setupPasswordVal.value.length < 6) {
+    message.error(t("login.passwordTooShort"));
+    return;
+  }
+  loading.value = true;
+  try {
+    await setupPassword(setupUsername.value, setupPasswordVal.value);
+    hasPasswordLogin.value = true;
+    username.value = setupUsername.value;
+    showSetupModal.value = false;
+    setupUsername.value = "";
+    setupPasswordVal.value = "";
+    setupPasswordConfirm.value = "";
+    message.success(t("login.setupSuccess"));
+  } catch (err: any) {
+    message.error(err.message || t("common.saveFailed"));
+  } finally {
+    loading.value = false;
+  }
+}
+
+async function handleChangePassword() {
+  if (newPasswordVal.value !== newPasswordConfirm.value) {
+    message.error(t("login.passwordMismatch"));
+    return;
+  }
+  if (newPasswordVal.value.length < 6) {
+    message.error(t("login.passwordTooShort"));
+    return;
+  }
+  loading.value = true;
+  try {
+    await changePassword(currentPasswordForPwd.value, newPasswordVal.value);
+    showChangePasswordModal.value = false;
+    currentPasswordForPwd.value = "";
+    newPasswordVal.value = "";
+    newPasswordConfirm.value = "";
+    message.success(t("login.passwordChanged"));
+  } catch (err: any) {
+    message.error(err.message || t("common.saveFailed"));
+  } finally {
+    loading.value = false;
+  }
+}
+
+async function handleChangeUsername() {
+  if (newUsernameVal.value.trim().length < 2) {
+    message.error(t("login.usernameTooShort"));
+    return;
+  }
+  loading.value = true;
+  try {
+    await changeUsername(currentPasswordForName.value, newUsernameVal.value.trim());
+    username.value = newUsernameVal.value.trim();
+    showChangeUsernameModal.value = false;
+    currentPasswordForName.value = "";
+    newUsernameVal.value = "";
+    message.success(t("login.usernameChanged"));
+  } catch (err: any) {
+    message.error(err.message || t("common.saveFailed"));
+  } finally {
+    loading.value = false;
+  }
+}
+
+async function handleRemove() {
+  loading.value = true;
+  try {
+    await removePassword();
+    hasPasswordLogin.value = false;
+    username.value = null;
+    message.success(t("login.passwordRemoved"));
+  } catch (err: any) {
+    message.error(err.message || t("common.saveFailed"));
+  } finally {
+    loading.value = false;
+  }
+}
+
+function openSetupModal() {
+  setupUsername.value = "";
+  setupPasswordVal.value = "";
+  setupPasswordConfirm.value = "";
+  showSetupModal.value = true;
+}
+
+function openChangePasswordModal() {
+  currentPasswordForPwd.value = "";
+  newPasswordVal.value = "";
+  newPasswordConfirm.value = "";
+  showChangePasswordModal.value = true;
+}
+
+function openChangeUsernameModal() {
+  currentPasswordForName.value = "";
+  newUsernameVal.value = "";
+  showChangeUsernameModal.value = true;
+}
+</script>
+
+<template>
+  <div class="account-settings">
+    <p class="section-desc">{{ t("login.setupDescription") }}</p>
+
+    <!-- Not configured -->
+    <div v-if="!hasPasswordLogin" class="action-row">
+      <span class="action-label">{{ t("login.passwordLoginNotConfigured") }}</span>
+      <NButton type="primary" @click="openSetupModal">{{ t("login.setupPassword") }}</NButton>
+    </div>
+
+    <!-- Configured -->
+    <div v-else class="configured-section">
+      <div class="action-row">
+        <span class="action-label">{{ t("login.passwordLoginConfigured", { username }) }}</span>
+        <div class="action-buttons">
+          <NButton @click="openChangePasswordModal">{{ t("login.changePassword") }}</NButton>
+          <NButton @click="openChangeUsernameModal">{{ t("login.changeUsername") }}</NButton>
+          <NPopconfirm @positive-click="handleRemove">
+            <template #trigger>
+              <NButton type="error" ghost :loading="loading">{{ t("login.removePasswordLogin") }}</NButton>
+            </template>
+            {{ t("login.removeConfirm") }}
+          </NPopconfirm>
+        </div>
+      </div>
+    </div>
+
+    <!-- Setup modal -->
+    <NModal v-model:show="showSetupModal" preset="dialog" :title="t('login.setupPassword')">
+      <NForm label-placement="top">
+        <NFormItem :label="t('login.username')">
+          <NInput v-model:value="setupUsername" :placeholder="t('login.usernamePlaceholder')" />
+        </NFormItem>
+        <NFormItem :label="t('login.newPassword')">
+          <NInput v-model:value="setupPasswordVal" type="password" show-password-on="click" :placeholder="t('login.passwordPlaceholder')" />
+        </NFormItem>
+        <NFormItem :label="t('login.confirmPassword')">
+          <NInput v-model:value="setupPasswordConfirm" type="password" show-password-on="click" :placeholder="t('login.confirmPassword')" @keyup.enter="handleSetup" />
+        </NFormItem>
+      </NForm>
+      <template #action>
+        <NButton @click="showSetupModal = false">{{ t("common.cancel") }}</NButton>
+        <NButton type="primary" :loading="loading" @click="handleSetup">{{ t("common.save") }}</NButton>
+      </template>
+    </NModal>
+
+    <!-- Change password modal -->
+    <NModal v-model:show="showChangePasswordModal" preset="dialog" :title="t('login.changePassword')">
+      <NForm label-placement="top">
+        <NFormItem :label="t('login.currentPassword')">
+          <NInput v-model:value="currentPasswordForPwd" type="password" show-password-on="click" :placeholder="t('login.currentPassword')" />
+        </NFormItem>
+        <NFormItem :label="t('login.newPassword')">
+          <NInput v-model:value="newPasswordVal" type="password" show-password-on="click" :placeholder="t('login.newPassword')" />
+        </NFormItem>
+        <NFormItem :label="t('login.confirmPassword')">
+          <NInput v-model:value="newPasswordConfirm" type="password" show-password-on="click" :placeholder="t('login.confirmPassword')" @keyup.enter="handleChangePassword" />
+        </NFormItem>
+      </NForm>
+      <template #action>
+        <NButton @click="showChangePasswordModal = false">{{ t("common.cancel") }}</NButton>
+        <NButton type="primary" :loading="loading" @click="handleChangePassword">{{ t("common.save") }}</NButton>
+      </template>
+    </NModal>
+
+    <!-- Change username modal -->
+    <NModal v-model:show="showChangeUsernameModal" preset="dialog" :title="t('login.changeUsername')">
+      <NForm label-placement="top">
+        <NFormItem :label="t('login.currentPassword')">
+          <NInput v-model:value="currentPasswordForName" type="password" show-password-on="click" :placeholder="t('login.currentPassword')" />
+        </NFormItem>
+        <NFormItem :label="t('login.newUsername')">
+          <NInput v-model:value="newUsernameVal" :placeholder="t('login.usernamePlaceholder')" @keyup.enter="handleChangeUsername" />
+        </NFormItem>
+      </NForm>
+      <template #action>
+        <NButton @click="showChangeUsernameModal = false">{{ t("common.cancel") }}</NButton>
+        <NButton type="primary" :loading="loading" @click="handleChangeUsername">{{ t("common.save") }}</NButton>
+      </template>
+    </NModal>
+  </div>
+</template>
+
+<style scoped lang="scss">
+@use "@/styles/variables" as *;
+
+.account-settings {
+  padding: 8px 0;
+}
+
+.section-desc {
+  font-size: 13px;
+  color: $text-muted;
+  margin: 0 0 20px;
+  line-height: 1.6;
+}
+
+.action-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 16px;
+}
+
+.action-label {
+  font-size: 14px;
+  color: $text-secondary;
+}
+
+.action-buttons {
+  display: flex;
+  gap: 8px;
+  flex-shrink: 0;
+}
+</style>
diff --git a/packages/client/src/components/layout/AppSidebar.vue b/packages/client/src/components/layout/AppSidebar.vue
index b2f6a6a0..bcf4425e 100644
--- a/packages/client/src/components/layout/AppSidebar.vue
+++ b/packages/client/src/components/layout/AppSidebar.vue
@@ -1,8 +1,8 @@
 <script setup lang="ts">
-import { computed, reactive } from "vue";
+import { computed, reactive, ref } from "vue";
 import { useRoute, useRouter } from "vue-router";
 import { useI18n } from "vue-i18n";
-import { NButton, useMessage } from "naive-ui";
+import { NButton, NModal, useMessage } from "naive-ui";
 import { useAppStore } from "@/stores/hermes/app";
 import ModelSelector from "./ModelSelector.vue";
 import ProfileSelector from "./ProfileSelector.vue";
@@ -13,6 +13,8 @@ import danceVideoLight from "@/assets/dance-light.mp4";
 import danceVideoDark from "@/assets/dance-dark.mp4";
 
 import { useTheme } from "@/composables/useTheme";
+import { clearApiKey } from "@/api/client";
+import { changelog } from "@/data/changelog";
 
 const { t } = useI18n();
 const { isDark } = useTheme();
@@ -46,6 +48,18 @@ async function handleUpdate() {
     message.error(t('sidebar.updateFailed'));
   }
 }
+
+function handleLogout() {
+  clearApiKey();
+  router.replace({ name: 'login' });
+}
+
+// Changelog
+const showChangelog = ref(false);
+
+function openChangelog() {
+  showChangelog.value = true;
+}
 </script>
 
 <template>
@@ -219,6 +233,14 @@ async function handleUpdate() {
     <ModelSelector />
 
     <div class="sidebar-footer">
+      <button class="nav-item logout-item" @click="handleLogout">
+        <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
+          <path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4" />
+          <polyline points="16 17 21 12 16 7" />
+          <line x1="21" y1="12" x2="9" y2="12" />
+        </svg>
+        <span>{{ t("sidebar.logout") }}</span>
+      </button>
       <div class="status-row">
         <div
           class="status-indicator"
@@ -240,13 +262,28 @@ async function handleUpdate() {
         <a class="github-link" href="https://github.com/EKKOLearnAI/hermes-web-ui" target="_blank" rel="noopener noreferrer" title="GitHub">
           <svg width="14" height="14" viewBox="0 0 24 24" fill="currentColor"><path d="M12 0C5.37 0 0 5.37 0 12c0 5.31 3.435 9.795 8.205 11.385.6.105.825-.255.825-.57 0-.285-.015-1.23-.015-2.235-3.015.555-3.795-.735-4.035-1.41-.135-.345-.72-1.41-1.23-1.695-.42-.225-1.02-.78-.015-.795.945-.015 1.62.87 1.845 1.23 1.08 1.815 2.805 1.305 3.495.99.105-.78.42-1.305.765-1.605-2.67-.3-5.46-1.335-5.46-5.925 0-1.305.465-2.385 1.23-3.225-.12-.3-.54-1.53.12-3.18 0 0 1.005-.315 3.3 1.23.96-.27 1.98-.405 3-.405s2.04.135 3 .405c2.295-1.56 3.3-1.23 3.3-1.23.66 1.65.24 2.88.12 3.18.765.84 1.23 1.905 1.23 3.225 0 4.605-2.805 5.625-5.475 5.925.435.375.81 1.095.81 2.22 0 1.605-.015 2.895-.015 3.3 0 .315.225.69.825.57A12.02 12.02 0 0024 12c0-6.63-5.37-12-12-12z"/></svg>
         </a>
-        <span>Hermes Web UI v{{ appStore.serverVersion || "0.1.0" }}</span>
+        <span class="version-text" @click="openChangelog">Hermes Web UI v{{ appStore.serverVersion || "0.1.0" }}</span>
         <ThemeSwitch />
       </div>
       <NButton v-if="appStore.updateAvailable" type="primary" size="tiny" block class="update-btn" :loading="appStore.updating" @click="handleUpdate">
         {{ appStore.updating ? t('sidebar.updating') : t('sidebar.updateVersion', { version: appStore.latestVersion }) }}
       </NButton>
     </div>
+
+    <!-- Changelog modal -->
+    <NModal v-model:show="showChangelog" preset="dialog" :title="t('sidebar.changelog')" style="width: 520px;">
+      <div class="changelog-list">
+        <div v-for="entry in changelog" :key="entry.version" class="changelog-version-block">
+          <div class="changelog-version-header">
+            <span class="changelog-version-tag">v{{ entry.version }}</span>
+            <span class="changelog-date">{{ entry.date }}</span>
+          </div>
+          <ul class="changelog-changes">
+            <li v-for="(change, idx) in entry.changes" :key="idx">{{ t(change) }}</li>
+          </ul>
+        </div>
+      </div>
+    </NModal>
   </aside>
 </template>
 
@@ -396,10 +433,23 @@ async function handleUpdate() {
 }
 
 .sidebar-footer {
-  padding-top: 16px;
+  padding-top: 8px;
   border-top: 1px solid $border-color;
 }
 
+.logout-item {
+  margin: 0 -12px;
+  padding: 10px 12px;
+  border-radius: 0;
+  font-size: 13px;
+  color: $text-muted;
+
+  &:hover {
+    color: $error;
+    background: rgba(var(--error-rgb, 239, 68, 68), 0.06);
+  }
+}
+
 .status-row {
   display: flex;
   align-items: center;
@@ -461,6 +511,66 @@ async function handleUpdate() {
   border-radius: 4px;
 }
 
+.version-text {
+  cursor: pointer;
+  transition: color 0.2s;
+
+  &:hover {
+    color: $accent-primary;
+  }
+}
+
+.changelog-list {
+  max-height: 400px;
+  overflow-y: auto;
+}
+
+.changelog-version-block {
+  margin-bottom: 20px;
+
+  &:last-child {
+    margin-bottom: 0;
+  }
+}
+
+.changelog-version-header {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  margin-bottom: 8px;
+}
+
+.changelog-version-tag {
+  font-weight: 600;
+  font-size: 14px;
+  color: $text-primary;
+  font-family: $font-code;
+}
+
+.changelog-changes {
+  list-style: none;
+  padding: 0;
+  margin: 0;
+
+  li {
+    font-size: 13px;
+    color: $text-secondary;
+    padding: 4px 0 4px 16px;
+    position: relative;
+
+    &::before {
+      content: '';
+      position: absolute;
+      left: 0;
+      top: 12px;
+      width: 6px;
+      height: 6px;
+      border-radius: 50%;
+      background: $text-muted;
+    }
+  }
+}
+
 @media (max-width: $breakpoint-mobile) {
   .logo-dance {
     display: none;
diff --git a/packages/client/src/data/changelog.ts b/packages/client/src/data/changelog.ts
new file mode 100644
index 00000000..da412146
--- /dev/null
+++ b/packages/client/src/data/changelog.ts
@@ -0,0 +1,23 @@
+export interface ChangelogEntry {
+  version: string
+  date: string
+  changes: string[]
+}
+
+export const changelog: ChangelogEntry[] = [
+  {
+    version: '0.4.3',
+    date: '2026-04-22',
+    changes: ['changelog.new_0_4_3_1', 'changelog.new_0_4_3_2', 'changelog.new_0_4_3_3', 'changelog.new_0_4_3_4'],
+  },
+  {
+    version: '0.4.2',
+    date: '2026-03-20',
+    changes: ['changelog.new_0_4_2_1', 'changelog.new_0_4_2_2', 'changelog.new_0_4_2_3', 'changelog.new_0_4_2_4', 'changelog.new_0_4_2_5'],
+  },
+  {
+    version: '0.4.1',
+    date: '2026-04-21',
+    changes: ['changelog.new_0_4_1_1'],
+  },
+]
diff --git a/packages/client/src/i18n/locales/de.ts b/packages/client/src/i18n/locales/de.ts
index 13accb09..1c3ab253 100644
--- a/packages/client/src/i18n/locales/de.ts
+++ b/packages/client/src/i18n/locales/de.ts
@@ -8,6 +8,32 @@ export default {
     tokenRequired: 'Bitte geben Sie Ihren Zugangs-Token ein',
     invalidToken: 'Ungultiger Token',
     connectionFailed: 'Verbindung zum Server nicht moglich',
+    passwordLogin: 'Passwort',
+    tokenLogin: 'Token',
+    usernamePlaceholder: 'Benutzername',
+    passwordPlaceholder: 'Passwort',
+    credentialsRequired: 'Bitte Benutzername und Passwort eingeben',
+    invalidCredentials: 'Ungultiger Benutzername oder Passwort',
+    passwordMismatch: 'Passworter stimmen nicht uberein',
+    passwordTooShort: 'Passwort muss mindestens 6 Zeichen lang sein',
+    setupSuccess: 'Passwort-Login erfolgreich konfiguriert',
+    passwordChanged: 'Passwort erfolgreich geandert',
+    passwordRemoved: 'Passwort-Login entfernt',
+    setupPassword: 'Passwort-Login einrichten',
+    changePassword: 'Passwort andern',
+    changeUsername: 'Benutzername andern',
+    removePasswordLogin: 'Entfernen',
+    username: 'Benutzername',
+    currentPassword: 'Aktuelles Passwort',
+    newPassword: 'Neues Passwort',
+    confirmPassword: 'Passwort bestatigen',
+    newUsername: 'Neuer Benutzername',
+    usernameChanged: 'Benutzername erfolgreich geandert',
+    usernameTooShort: 'Benutzername muss mindestens 2 Zeichen lang sein',
+    setupDescription: 'Richten Sie Benutzername und Passwort fur bequemes Login ein. Der Zugangs-Token bleibt als Backup verfugbar.',
+    removeConfirm: 'Mochten Sie das Passwort-Login wirklich entfernen? Sie mussen dann den Zugangs-Token verwenden.',
+    passwordLoginNotConfigured: 'Passwort-Login ist nicht konfiguriert',
+    passwordLoginConfigured: 'Passwort-Login aktiviert ({username})',
   },
 
   // Common
@@ -57,6 +83,9 @@ export default {
     updating: 'Aktualisierung...',
     updateSuccess: 'Aktualisierung abgeschlossen, bitte Server neu starten',
     updateFailed: 'Aktualisierung fehlgeschlagen',
+    logout: 'Abmelden',
+    changelog: 'Anderungsprotokoll',
+    noChangelog: 'Kein Anderungsprotokoll verfugbar',
   },
 
   // Chat
@@ -291,6 +320,7 @@ export default {
     saveFailed: 'Speichern fehlgeschlagen',
     tabs: {
       display: 'Anzeige',
+      account: 'Konto',
       agent: 'Agent',
       memory: 'Gedachtnis',
       session: 'Sitzung',
@@ -470,4 +500,18 @@ export default {
     cost: 'Kosten',
     noData: 'Keine Nutzungsdaten',
   },
+
+  // Anderungsprotokoll
+  changelog: {
+    new_0_4_3_1: 'Benutzername/Passwort-Login neben Token-Authentifizierung hinzugefugt',
+    new_0_4_3_2: 'Kontoeinstellungen fur Anmeldeinformationen hinzugefugt',
+    new_0_4_3_3: 'Abmelden-Schaltflache in der Seitenleiste hinzugefugt',
+    new_0_4_3_4: 'Anderungsprotokoll-Popup durch Klick auf Versionsnummer hinzugefugt',
+    new_0_4_2_1: 'Token-Nutzungsverfolgung und dynamische Kontextlange hinzugefugt',
+    new_0_4_2_2: 'Sitzungssuche-Modal hinzugefugt',
+    new_0_4_2_3: 'Gruppenchat-System mit Socket.IO und SQLite wiederhergestellt',
+    new_0_4_2_4: 'Angeheftete Sitzungen und Live-Monitor hinzugefugt',
+    new_0_4_2_5: 'Eingebaute Provider-Erkennung und Modellabgleich behoben',
+    new_0_4_1_1: 'Authentifizierungsumgehung und SPA-Bereitstellung behoben',
+  },
 }
diff --git a/packages/client/src/i18n/locales/en.ts b/packages/client/src/i18n/locales/en.ts
index 7b6da14c..b1858f63 100644
--- a/packages/client/src/i18n/locales/en.ts
+++ b/packages/client/src/i18n/locales/en.ts
@@ -8,6 +8,32 @@ export default {
     tokenRequired: 'Please enter your access token',
     invalidToken: 'Invalid token',
     connectionFailed: 'Cannot connect to server',
+    passwordLogin: 'Password',
+    tokenLogin: 'Token',
+    usernamePlaceholder: 'Username',
+    passwordPlaceholder: 'Password',
+    credentialsRequired: 'Please enter username and password',
+    invalidCredentials: 'Invalid username or password',
+    passwordMismatch: 'Passwords do not match',
+    passwordTooShort: 'Password must be at least 6 characters',
+    setupSuccess: 'Password login configured successfully',
+    passwordChanged: 'Password changed successfully',
+    passwordRemoved: 'Password login removed',
+    setupPassword: 'Set Up Password Login',
+    changePassword: 'Change Password',
+    changeUsername: 'Change Username',
+    removePasswordLogin: 'Remove',
+    username: 'Username',
+    currentPassword: 'Current Password',
+    newPassword: 'New Password',
+    confirmPassword: 'Confirm Password',
+    newUsername: 'New Username',
+    usernameChanged: 'Username changed successfully',
+    usernameTooShort: 'Username must be at least 2 characters',
+    setupDescription: 'Set up a username and password for convenient login. The access token will continue to work as a backup.',
+    removeConfirm: 'Are you sure you want to remove password login? You will need to use the access token to log in.',
+    passwordLoginNotConfigured: 'Password login is not configured',
+    passwordLoginConfigured: 'Password login enabled ({username})',
   },
 
   // Common
@@ -69,6 +95,9 @@ export default {
     updating: 'Updating...',
     updateSuccess: 'Update complete, please restart the server',
     updateFailed: 'Update failed',
+    logout: 'Sign Out',
+    changelog: 'Changelog',
+    noChangelog: 'No changelog available',
   },
 
   // Chat
@@ -324,6 +353,7 @@ export default {
     saveFailed: 'Save failed',
     tabs: {
       display: 'Display',
+      account: 'Account',
       agent: 'Agent',
       memory: 'Memory',
       session: 'Session',
@@ -511,4 +541,18 @@ export default {
     cost: 'Cost',
     noData: 'No usage data',
   },
+
+  // Changelog
+  changelog: {
+    new_0_4_3_1: 'Add username/password login alongside token authentication',
+    new_0_4_3_2: 'Add account settings for managing credentials (setup, change password, change username)',
+    new_0_4_3_3: 'Add logout button to sidebar',
+    new_0_4_3_4: 'Add version changelog popup (click version number)',
+    new_0_4_2_1: 'Add token usage tracking, context display, and dynamic context length',
+    new_0_4_2_2: 'Add session search modal',
+    new_0_4_2_3: 'Restore group chat system with Socket.IO and SQLite persistence',
+    new_0_4_2_4: 'Add pinned sessions and live monitor in Chat page',
+    new_0_4_2_5: 'Fix builtin provider detection and model matching',
+    new_0_4_1_1: 'Fix auth bypass, SPA serving, and provider improvements',
+  },
 }
diff --git a/packages/client/src/i18n/locales/es.ts b/packages/client/src/i18n/locales/es.ts
index 1ed68ab5..fc521b18 100644
--- a/packages/client/src/i18n/locales/es.ts
+++ b/packages/client/src/i18n/locales/es.ts
@@ -8,6 +8,32 @@ export default {
     tokenRequired: 'Por favor, introduce tu token de acceso',
     invalidToken: 'Token invalido',
     connectionFailed: 'No se puede conectar al servidor',
+    passwordLogin: 'Contrasena',
+    tokenLogin: 'Token',
+    usernamePlaceholder: 'Nombre de usuario',
+    passwordPlaceholder: 'Contrasena',
+    credentialsRequired: 'Por favor, introduzca nombre de usuario y contrasena',
+    invalidCredentials: 'Nombre de usuario o contrasena incorrectos',
+    passwordMismatch: 'Las contrasenas no coinciden',
+    passwordTooShort: 'La contrasena debe tener al menos 6 caracteres',
+    setupSuccess: 'Login con contrasena configurado correctamente',
+    passwordChanged: 'Contrasena cambiada correctamente',
+    passwordRemoved: 'Login con contrasena eliminado',
+    setupPassword: 'Configurar login con contrasena',
+    changePassword: 'Cambiar contrasena',
+    changeUsername: 'Cambiar nombre de usuario',
+    removePasswordLogin: 'Eliminar',
+    username: 'Nombre de usuario',
+    currentPassword: 'Contrasena actual',
+    newPassword: 'Nueva contrasena',
+    confirmPassword: 'Confirmar contrasena',
+    newUsername: 'Nuevo nombre de usuario',
+    usernameChanged: 'Nombre de usuario cambiado correctamente',
+    usernameTooShort: 'El nombre de usuario debe tener al menos 2 caracteres',
+    setupDescription: 'Configure un nombre de usuario y contrasena para un inicio de sesion rapido. El token de acceso seguira funcionando.',
+    removeConfirm: 'Esta seguro de eliminar el login con contrasena? Necesitara usar el token de acceso.',
+    passwordLoginNotConfigured: 'Login con contrasena no configurado',
+    passwordLoginConfigured: 'Login con contrasena habilitado ({username})',
   },
 
   // Common
@@ -57,6 +83,9 @@ export default {
     updating: 'Actualizando...',
     updateSuccess: 'Actualizacion completa, por favor reinicia el servidor',
     updateFailed: 'Error al actualizar',
+    logout: 'Cerrar sesion',
+    changelog: 'Registro de cambios',
+    noChangelog: 'No hay registro de cambios',
   },
 
   // Chat
@@ -291,6 +320,7 @@ export default {
     saveFailed: 'Error al guardar',
     tabs: {
       display: 'Pantalla',
+      account: 'Cuenta',
       agent: 'Agente',
       memory: 'Memoria',
       session: 'Sesion',
@@ -470,4 +500,18 @@ export default {
     cost: 'Costo',
     noData: 'Sin datos de uso',
   },
+
+  // Registro de cambios
+  changelog: {
+    new_0_4_3_1: 'Agregar inicio de sesion con usuario/contrasena junto a autenticacion por token',
+    new_0_4_3_2: 'Agregar configuracion de cuenta para gestionar credenciales',
+    new_0_4_3_3: 'Agregar boton de cerrar sesion en la barra lateral',
+    new_0_4_3_4: 'Agregar popup de registro de cambios al hacer clic en el numero de version',
+    new_0_4_2_1: 'Agregar seguimiento de uso de tokens y longitud de contexto dinamico',
+    new_0_4_2_2: 'Agregar modal de busqueda de sesiones',
+    new_0_4_2_3: 'Restaurar sistema de chat grupal con Socket.IO y SQLite',
+    new_0_4_2_4: 'Agregar sesiones fijas y monitor en vivo en la pagina de chat',
+    new_0_4_2_5: 'Corregir deteccion de proveedores integrados y coincidencia de modelos',
+    new_0_4_1_1: 'Corregir bypass de autenticacion y servicio de archivos SPA',
+  },
 }
diff --git a/packages/client/src/i18n/locales/fr.ts b/packages/client/src/i18n/locales/fr.ts
index 584f2bc1..539d0c53 100644
--- a/packages/client/src/i18n/locales/fr.ts
+++ b/packages/client/src/i18n/locales/fr.ts
@@ -8,6 +8,32 @@ export default {
     tokenRequired: 'Veuillez entrer votre jeton d\'acces',
     invalidToken: 'Jeton invalide',
     connectionFailed: 'Impossible de se connecter au serveur',
+    passwordLogin: 'Mot de passe',
+    tokenLogin: 'Jeton',
+    usernamePlaceholder: 'Nom d\'utilisateur',
+    passwordPlaceholder: 'Mot de passe',
+    credentialsRequired: 'Veuillez entrer le nom d\'utilisateur et le mot de passe',
+    invalidCredentials: 'Nom d\'utilisateur ou mot de passe incorrect',
+    passwordMismatch: 'Les mots de passe ne correspondent pas',
+    passwordTooShort: 'Le mot de passe doit contenir au moins 6 caracteres',
+    setupSuccess: 'Login par mot de passe configure avec succes',
+    passwordChanged: 'Mot de passe change avec succes',
+    passwordRemoved: 'Login par mot de passe supprime',
+    setupPassword: 'Configurer le login par mot de passe',
+    changePassword: 'Changer le mot de passe',
+    changeUsername: 'Changer le nom d\'utilisateur',
+    removePasswordLogin: 'Supprimer',
+    username: 'Nom d\'utilisateur',
+    currentPassword: 'Mot de passe actuel',
+    newPassword: 'Nouveau mot de passe',
+    confirmPassword: 'Confirmer le mot de passe',
+    newUsername: 'Nouveau nom d\'utilisateur',
+    usernameChanged: 'Nom d\'utilisateur change avec succes',
+    usernameTooShort: 'Le nom d\'utilisateur doit contenir au moins 2 caracteres',
+    setupDescription: 'Configurez un nom d\'utilisateur et un mot de passe pour un login rapide. Le jeton d\'acces reste disponible.',
+    removeConfirm: 'Voulez-vous vraiment supprimer le login par mot de passe? Vous devrez utiliser le jeton d\'acces.',
+    passwordLoginNotConfigured: 'Login par mot de passe non configure',
+    passwordLoginConfigured: 'Login par mot de passe active ({username})',
   },
 
   // Common
@@ -57,6 +83,9 @@ export default {
     updating: 'Mise a jour...',
     updateSuccess: 'Mise a jour terminee, veuillez redemarrer le serveur',
     updateFailed: 'Echec de la mise a jour',
+    logout: 'Deconnexion',
+    changelog: 'Journal des modifications',
+    noChangelog: 'Aucun journal disponible',
   },
 
   // Chat
@@ -291,6 +320,7 @@ export default {
     saveFailed: 'Echec de l\'enregistrement',
     tabs: {
       display: 'Affichage',
+      account: 'Compte',
       agent: 'Agent',
       memory: 'Memoire',
       session: 'Session',
@@ -470,4 +500,18 @@ export default {
     cost: 'Cout',
     noData: 'Aucune donnee d\'utilisation',
   },
+
+  // Journal des modifications
+  changelog: {
+    new_0_4_3_1: 'Ajouter la connexion par nom d\'utilisateur/mot de passe en plus du token',
+    new_0_4_3_2: 'Ajouter les parametres de compte pour gerer les identifiants',
+    new_0_4_3_3: 'Ajouter le bouton de deconnexion dans la barre laterale',
+    new_0_4_3_4: 'Ajouter un popup de journal des modifications en cliquant sur le numero de version',
+    new_0_4_2_1: 'Ajouter le suivi de l\'utilisation des tokens et la longueur de contexte dynamique',
+    new_0_4_2_2: 'Ajouter la modal de recherche de sessions',
+    new_0_4_2_3: 'Restaurer le systeme de chat de groupe avec Socket.IO et SQLite',
+    new_0_4_2_4: 'Ajouter les sessions epinglees et le moniteur en direct',
+    new_0_4_2_5: 'Corriger la detection des fournisseurs integres et l\'appariement des modeles',
+    new_0_4_1_1: 'Corriger le contournement d\'authentification et le service de fichiers SPA',
+  },
 }
diff --git a/packages/client/src/i18n/locales/ja.ts b/packages/client/src/i18n/locales/ja.ts
index 124b562d..36cdb4fe 100644
--- a/packages/client/src/i18n/locales/ja.ts
+++ b/packages/client/src/i18n/locales/ja.ts
@@ -8,6 +8,32 @@ export default {
     tokenRequired: 'アクセストークンを入力してください',
     invalidToken: '無効なトークンです',
     connectionFailed: 'サーバーに接続できません',
+    passwordLogin: 'パスワード',
+    tokenLogin: 'トークン',
+    usernamePlaceholder: 'ユーザー名',
+    passwordPlaceholder: 'パスワード',
+    credentialsRequired: 'ユーザー名とパスワードを入力してください',
+    invalidCredentials: 'ユーザー名またはパスワードが正しくありません',
+    passwordMismatch: 'パスワードが一致しません',
+    passwordTooShort: 'パスワードは6文字以上必要です',
+    setupSuccess: 'パスワードログインが設定されました',
+    passwordChanged: 'パスワードが変更されました',
+    passwordRemoved: 'パスワードログインが削除されました',
+    setupPassword: 'パスワードログインを設定',
+    changePassword: 'パスワードを変更',
+    changeUsername: 'ユーザー名を変更',
+    removePasswordLogin: '削除',
+    username: 'ユーザー名',
+    currentPassword: '現在のパスワード',
+    newPassword: '新しいパスワード',
+    confirmPassword: 'パスワード確認',
+    newUsername: '新しいユーザー名',
+    usernameChanged: 'ユーザー名が変更されました',
+    usernameTooShort: 'ユーザー名は2文字以上必要です',
+    setupDescription: 'ユーザー名とパスワードを設定して、簡単にログインできるようにします。アクセストークンは引き続きバックアップとして使用できます。',
+    removeConfirm: 'パスワードログインを削除しますか？アクセストークンを使用してログインする必要があります。',
+    passwordLoginNotConfigured: 'パスワードログイン未設定',
+    passwordLoginConfigured: 'パスワードログイン有効（{username}）',
   },
 
   // 共通
@@ -57,6 +83,9 @@ export default {
     updating: '更新中...',
     updateSuccess: '更新が完了しました。サーバーを再起動してください',
     updateFailed: '更新に失敗しました',
+    logout: 'ログアウト',
+    changelog: '更新履歴',
+    noChangelog: '更新履歴はありません',
   },
 
   // チャット
@@ -291,6 +320,7 @@ export default {
     saveFailed: '保存に失敗しました',
     tabs: {
       display: '表示',
+      account: 'アカウント',
       agent: 'エージェント',
       memory: 'メモリ',
       session: 'セッション',
@@ -470,4 +500,18 @@ export default {
     cost: 'コスト',
     noData: '使用データがありません',
   },
+
+  // 更新履歴
+  changelog: {
+    new_0_4_3_1: 'トークン認証に加えてユーザー名/パスワードログインを追加',
+    new_0_4_3_2: '資格情報管理のためのアカウント設定を追加',
+    new_0_4_3_3: 'サイドバーにログアウトボタンを追加',
+    new_0_4_3_4: 'バージョン番号クリックで更新履歴ポップアップを追加',
+    new_0_4_2_1: 'トークン使用量追跡と動的コンテキスト長を追加',
+    new_0_4_2_2: 'セッション検索モーダルを追加',
+    new_0_4_2_3: 'Socket.IOとSQLiteによるグループチャットシステムを復元',
+    new_0_4_2_4: 'チャットページにピン留めセッションとライブモニターを追加',
+    new_0_4_2_5: '組み込みプロバイダー検出とモデルマッチングを修正',
+    new_0_4_1_1: '認証バイパスとSPAファイル配信を修正',
+  },
 }
diff --git a/packages/client/src/i18n/locales/ko.ts b/packages/client/src/i18n/locales/ko.ts
index a0c42c19..01c8a2a0 100644
--- a/packages/client/src/i18n/locales/ko.ts
+++ b/packages/client/src/i18n/locales/ko.ts
@@ -8,6 +8,32 @@ export default {
     tokenRequired: '액세스 토큰을 입력해 주세요',
     invalidToken: '유효하지 않은 토큰입니다',
     connectionFailed: '서버에 연결할 수 없습니다',
+    passwordLogin: '비밀번호',
+    tokenLogin: '토큰',
+    usernamePlaceholder: '사용자 이름',
+    passwordPlaceholder: '비밀번호',
+    credentialsRequired: '사용자 이름과 비밀번호를 입력해 주세요',
+    invalidCredentials: '사용자 이름 또는 비밀번호가 올바르지 않습니다',
+    passwordMismatch: '비밀번호가 일치하지 않습니다',
+    passwordTooShort: '비밀번호는 6자 이상이어야 합니다',
+    setupSuccess: '비밀번호 로그인이 설정되었습니다',
+    passwordChanged: '비밀번호가 변경되었습니다',
+    passwordRemoved: '비밀번호 로그인이 제거되었습니다',
+    setupPassword: '비밀번호 로그인 설정',
+    changePassword: '비밀번호 변경',
+    changeUsername: '사용자 이름 변경',
+    removePasswordLogin: '제거',
+    username: '사용자 이름',
+    currentPassword: '현재 비밀번호',
+    newPassword: '새 비밀번호',
+    confirmPassword: '비밀번호 확인',
+    newUsername: '새 사용자 이름',
+    usernameChanged: '사용자 이름이 변경되었습니다',
+    usernameTooShort: '사용자 이름은 2자 이상이어야 합니다',
+    setupDescription: '사용자 이름과 비밀번호를 설정하여 편리하게 로그인하세요. 액세스 토큰은 백업으로 계속 사용할 수 있습니다.',
+    removeConfirm: '비밀번호 로그인을 제거하시겠습니까? 액세스 토큰을 사용하여 로그인해야 합니다.',
+    passwordLoginNotConfigured: '비밀번호 로그인 미설정',
+    passwordLoginConfigured: '비밀번호 로그인 활성화됨 ({username})',
   },
 
   // 공통
@@ -57,6 +83,9 @@ export default {
     updating: '업데이트 중...',
     updateSuccess: '업데이트 완료, 서버를 재시작해 주세요',
     updateFailed: '업데이트 실패',
+    logout: '로그아웃',
+    changelog: '변경 이력',
+    noChangelog: '변경 이력이 없습니다',
   },
 
   // 채팅
@@ -291,6 +320,7 @@ export default {
     saveFailed: '저장 실패',
     tabs: {
       display: '표시',
+      account: '계정',
       agent: '에이전트',
       memory: '메모리',
       session: '세션',
@@ -470,4 +500,18 @@ export default {
     cost: '비용',
     noData: '사용량 데이터 없음',
   },
+
+  // 변경 이력
+  changelog: {
+    new_0_4_3_1: '토큰 인증과 함께 사용자 이름/비밀번호 로그인 추가',
+    new_0_4_3_2: '자격 증명 관리를 위한 계정 설정 추가',
+    new_0_4_3_3: '사이드바에 로그아웃 버튼 추가',
+    new_0_4_3_4: '버전 번호 클릭으로 변경 이력 팝업 추가',
+    new_0_4_2_1: '토큰 사용량 추적 및 동적 컨텍스트 길이 추가',
+    new_0_4_2_2: '세션 검색 모달 추가',
+    new_0_4_2_3: 'Socket.IO 및 SQLite로 그룹 채팅 시스템 복원',
+    new_0_4_2_4: '채팅 페이지에 고정 세션 및 라이브 모니터 추가',
+    new_0_4_2_5: '내장 프로바이더 감지 및 모델 매칭 수정',
+    new_0_4_1_1: '인증 우회 및 SPA 파일 서비스 수정',
+  },
 }
diff --git a/packages/client/src/i18n/locales/pt.ts b/packages/client/src/i18n/locales/pt.ts
index 630097a1..24d2b8ef 100644
--- a/packages/client/src/i18n/locales/pt.ts
+++ b/packages/client/src/i18n/locales/pt.ts
@@ -8,6 +8,32 @@ export default {
     tokenRequired: 'Por favor, insira seu token de acesso',
     invalidToken: 'Token invalido',
     connectionFailed: 'Nao foi possivel conectar ao servidor',
+    passwordLogin: 'Senha',
+    tokenLogin: 'Token',
+    usernamePlaceholder: 'Nome de usuario',
+    passwordPlaceholder: 'Senha',
+    credentialsRequired: 'Por favor, insira nome de usuario e senha',
+    invalidCredentials: 'Nome de usuario ou senha incorretos',
+    passwordMismatch: 'As senhas nao conferem',
+    passwordTooShort: 'A senha deve ter pelo menos 6 caracteres',
+    setupSuccess: 'Login por senha configurado com sucesso',
+    passwordChanged: 'Senha alterada com sucesso',
+    passwordRemoved: 'Login por senha removido',
+    setupPassword: 'Configurar login por senha',
+    changePassword: 'Alterar senha',
+    changeUsername: 'Alterar nome de usuario',
+    removePasswordLogin: 'Remover',
+    username: 'Nome de usuario',
+    currentPassword: 'Senha atual',
+    newPassword: 'Nova senha',
+    confirmPassword: 'Confirmar senha',
+    newUsername: 'Novo nome de usuario',
+    usernameChanged: 'Nome de usuario alterado com sucesso',
+    usernameTooShort: 'O nome de usuario deve ter pelo menos 2 caracteres',
+    setupDescription: 'Configure um nome de usuario e senha para login conveniente. O token de acesso continuara funcionando como backup.',
+    removeConfirm: 'Tem certeza de que deseja remover o login por senha? Voce precisara usar o token de acesso.',
+    passwordLoginNotConfigured: 'Login por senha nao configurado',
+    passwordLoginConfigured: 'Login por senha habilitado ({username})',
   },
 
   // Common
@@ -57,6 +83,9 @@ export default {
     updating: 'Atualizando...',
     updateSuccess: 'Atualizacao concluida, por favor reinicie o servidor',
     updateFailed: 'Falha na atualizacao',
+    logout: 'Sair',
+    changelog: 'Registro de alteracoes',
+    noChangelog: 'Nenhum registro disponivel',
   },
 
   // Chat
@@ -291,6 +320,7 @@ export default {
     saveFailed: 'Falha ao salvar',
     tabs: {
       display: 'Exibicao',
+      account: 'Conta',
       agent: 'Agente',
       memory: 'Memoria',
       session: 'Sessao',
@@ -470,4 +500,18 @@ export default {
     cost: 'Custo',
     noData: 'Sem dados de uso',
   },
+
+  // Registro de alteracoes
+  changelog: {
+    new_0_4_3_1: 'Adicionar login por usuario/senha junto com autenticacao por token',
+    new_0_4_3_2: 'Adicionar configuracoes de conta para gerenciar credenciais',
+    new_0_4_3_3: 'Adicionar botao de sair na barra lateral',
+    new_0_4_3_4: 'Adicionar popup de registro de alteracoes ao clicar no numero da versao',
+    new_0_4_2_1: 'Adicionar rastreamento de uso de tokens e comprimento de contexto dinamico',
+    new_0_4_2_2: 'Adicionar modal de busca de sessoes',
+    new_0_4_2_3: 'Restaurar sistema de chat em grupo com Socket.IO e SQLite',
+    new_0_4_2_4: 'Adicionar sessoes fixas e monitor ao vivo na pagina de chat',
+    new_0_4_2_5: 'Corrigir deteccao de provedores integrados e combinacao de modelos',
+    new_0_4_1_1: 'Corrigir bypass de autenticacao e servico de arquivos SPA',
+  },
 }
diff --git a/packages/client/src/i18n/locales/zh.ts b/packages/client/src/i18n/locales/zh.ts
index 45c87767..6b917a8f 100644
--- a/packages/client/src/i18n/locales/zh.ts
+++ b/packages/client/src/i18n/locales/zh.ts
@@ -8,6 +8,32 @@ export default {
     tokenRequired: '请输入访问令牌',
     invalidToken: '令牌无效',
     connectionFailed: '无法连接到服务器',
+    passwordLogin: '密码登录',
+    tokenLogin: '令牌登录',
+    usernamePlaceholder: '用户名',
+    passwordPlaceholder: '密码',
+    credentialsRequired: '请输入用户名和密码',
+    invalidCredentials: '用户名或密码错误',
+    passwordMismatch: '两次密码不一致',
+    passwordTooShort: '密码长度至少 6 个字符',
+    setupSuccess: '密码登录配置成功',
+    passwordChanged: '密码修改成功',
+    passwordRemoved: '密码登录已移除',
+    setupPassword: '设置密码登录',
+    changePassword: '修改密码',
+    changeUsername: '修改用户名',
+    removePasswordLogin: '移除',
+    username: '用户名',
+    currentPassword: '当前密码',
+    newPassword: '新密码',
+    confirmPassword: '确认密码',
+    newUsername: '新用户名',
+    usernameChanged: '用户名修改成功',
+    usernameTooShort: '用户名至少 2 个字符',
+    setupDescription: '设置用户名和密码以便快速登录。访问令牌仍可继续使用。',
+    removeConfirm: '确定要移除密码登录吗？移除后需要使用访问令牌登录。',
+    passwordLoginNotConfigured: '密码登录未配置',
+    passwordLoginConfigured: '密码登录已启用（{username}）',
   },
 
   // 通用
@@ -69,6 +95,9 @@ export default {
     updating: '正在更新...',
     updateSuccess: '更新完成，请重启服务',
     updateFailed: '更新失败',
+    logout: '退出登录',
+    changelog: '更新日志',
+    noChangelog: '暂无更新日志',
   },
 
   // 对话
@@ -316,6 +345,7 @@ export default {
     saveFailed: '保存失败',
     tabs: {
       display: '显示',
+      account: '账户',
       agent: '代理',
       memory: '记忆',
       session: '会话',
@@ -513,4 +543,18 @@ export default {
     cost: '费用',
     noData: '暂无用量数据',
   },
+
+  // 更新日志
+  changelog: {
+    new_0_4_3_1: '新增用户名/密码登录，支持与令牌认证并存',
+    new_0_4_3_2: '新增账户设置：配置密码、修改密码、修改用户名',
+    new_0_4_3_3: '侧边栏新增退出登录按钮',
+    new_0_4_3_4: '点击版本号查看更新日志弹窗',
+    new_0_4_2_1: '新增 Token 用量追踪、上下文显示和动态上下文长度',
+    new_0_4_2_2: '新增会话搜索弹窗',
+    new_0_4_2_3: '恢复群聊系统（Socket.IO + SQLite 持久化）',
+    new_0_4_2_4: 'Chat 页面新增固定会话和实时监控',
+    new_0_4_2_5: '修复内置 Provider 检测和模型匹配问题',
+    new_0_4_1_1: '修复认证绕过、SPA 静态文件服务和 Provider 改进',
+  },
 }
diff --git a/packages/client/src/views/LoginView.vue b/packages/client/src/views/LoginView.vue
index ebfe6d81..c40bbbe8 100644
--- a/packages/client/src/views/LoginView.vue
+++ b/packages/client/src/views/LoginView.vue
@@ -1,8 +1,9 @@
 <script setup lang="ts">
-import { ref } from "vue";
+import { ref, onMounted } from "vue";
 import { useRouter } from "vue-router";
 import { useI18n } from "vue-i18n";
 import { setApiKey, hasApiKey } from "@/api/client";
+import { fetchAuthStatus, loginWithPassword } from "@/api/auth";
 
 const { t } = useI18n();
 const router = useRouter();
@@ -11,14 +12,41 @@ const router = useRouter();
 const urlToken = (window as any).__LOGIN_TOKEN__ || "";
 
 const token = ref(urlToken);
+const username = ref("");
+const password = ref("");
 const loading = ref(false);
 const errorMsg = ref("");
+
+// Login method: 'token' or 'password'
+const loginMethod = ref<"token" | "password">("token");
+const hasPasswordLogin = ref(false);
+
 // If already has a key, try to go to main page
 if (hasApiKey()) {
   router.replace("/hermes/chat");
 }
 
+onMounted(async () => {
+  try {
+    const status = await fetchAuthStatus();
+    hasPasswordLogin.value = status.hasPasswordLogin;
+    if (status.hasPasswordLogin && !urlToken) {
+      loginMethod.value = "password";
+    }
+  } catch {
+    // Fallback to token-only
+  }
+});
+
 async function handleLogin() {
+  if (loginMethod.value === "token") {
+    await handleTokenLogin();
+  } else {
+    await handlePasswordLogin();
+  }
+}
+
+async function handleTokenLogin() {
   const key = token.value.trim();
   if (!key) {
     errorMsg.value = t("login.tokenRequired");
@@ -29,7 +57,6 @@ async function handleLogin() {
   errorMsg.value = "";
 
   try {
-    // Validate token by calling an auth-required endpoint
     const res = await fetch("/api/sessions", {
       headers: { Authorization: `Bearer ${key}` },
     });
@@ -48,6 +75,26 @@ async function handleLogin() {
     loading.value = false;
   }
 }
+
+async function handlePasswordLogin() {
+  if (!username.value.trim() || !password.value) {
+    errorMsg.value = t("login.credentialsRequired");
+    return;
+  }
+
+  loading.value = true;
+  errorMsg.value = "";
+
+  try {
+    const sessionToken = await loginWithPassword(username.value.trim(), password.value);
+    setApiKey(sessionToken);
+    router.replace("/hermes/chat");
+  } catch (err: any) {
+    errorMsg.value = err.message || t("login.invalidCredentials");
+  } finally {
+    loading.value = false;
+  }
+}
 </script>
 
 <template>
@@ -56,17 +103,53 @@ async function handleLogin() {
       <div class="login-logo">
         <img src="/logo.png" alt="Hermes" width="80" height="80" />
       </div>
-      <h1 class="login-title">{{ t('login.title') }}</h1>
+      <h1 class="login-title">{{ t("login.title") }}</h1>
       <p class="login-desc">{{ t("login.description") }}</p>
 
+      <!-- Method toggle -->
+      <div v-if="hasPasswordLogin" class="login-method-toggle">
+        <button
+          class="toggle-btn"
+          :class="{ active: loginMethod === 'password' }"
+          @click="loginMethod = 'password'"
+        >{{ t("login.passwordLogin") }}</button>
+        <button
+          class="toggle-btn"
+          :class="{ active: loginMethod === 'token' }"
+          @click="loginMethod = 'token'"
+        >{{ t("login.tokenLogin") }}</button>
+      </div>
+
       <form class="login-form" @submit.prevent="handleLogin">
-        <input
-          v-model="token"
-          type="password"
-          class="login-input"
-          :placeholder="t('login.placeholder')"
-          autofocus
-        />
+        <!-- Token login -->
+        <template v-if="loginMethod === 'token'">
+          <input
+            v-model="token"
+            type="password"
+            class="login-input"
+            :placeholder="t('login.placeholder')"
+            autofocus
+          />
+        </template>
+
+        <!-- Password login -->
+        <template v-if="loginMethod === 'password'">
+          <input
+            v-model="username"
+            type="text"
+            class="login-input"
+            :placeholder="t('login.usernamePlaceholder')"
+            autofocus
+          />
+          <input
+            v-model="password"
+            type="password"
+            class="login-input"
+            :placeholder="t('login.passwordPlaceholder')"
+            @keyup.enter="handleLogin"
+          />
+        </template>
+
         <div v-if="errorMsg" class="login-error">{{ errorMsg }}</div>
         <button type="submit" class="login-btn" :disabled="loading">
           {{ loading ? "..." : t("login.submit") }}
@@ -115,10 +198,38 @@ async function handleLogin() {
 .login-desc {
   font-size: 14px;
   color: $text-muted;
-  margin: 0 0 40px;
+  margin: 0 0 32px;
   line-height: 1.6;
 }
 
+.login-method-toggle {
+  display: flex;
+  margin-bottom: 24px;
+  border: 1px solid $border-color;
+  border-radius: $radius-sm;
+  overflow: hidden;
+
+  .toggle-btn {
+    flex: 1;
+    padding: 10px;
+    border: none;
+    background: transparent;
+    color: $text-muted;
+    font-size: 13px;
+    cursor: pointer;
+    transition: all $transition-fast;
+
+    &.active {
+      background: $text-primary;
+      color: var(--text-on-accent);
+    }
+
+    &:not(.active):hover {
+      background: rgba(var(--accent-primary-rgb), 0.06);
+    }
+  }
+}
+
 .login-form {
   display: flex;
   flex-direction: column;
diff --git a/packages/client/src/views/hermes/SettingsView.vue b/packages/client/src/views/hermes/SettingsView.vue
index e4662dc1..a58693b7 100644
--- a/packages/client/src/views/hermes/SettingsView.vue
+++ b/packages/client/src/views/hermes/SettingsView.vue
@@ -13,6 +13,7 @@ import MemorySettings from "@/components/hermes/settings/MemorySettings.vue";
 import SessionSettings from "@/components/hermes/settings/SessionSettings.vue";
 import PrivacySettings from "@/components/hermes/settings/PrivacySettings.vue";
 import ModelSettings from "@/components/hermes/settings/ModelSettings.vue";
+import AccountSettings from "@/components/hermes/settings/AccountSettings.vue";
 
 const settingsStore = useSettingsStore();
 const { t } = useI18n();
@@ -35,6 +36,9 @@ onMounted(() => {
         :description="t('common.loading')"
       >
         <NTabs type="line" animated>
+          <NTabPane name="account" :tab="t('settings.tabs.account')">
+            <AccountSettings />
+          </NTabPane>
           <NTabPane name="display" :tab="t('settings.tabs.display')">
             <DisplaySettings />
           </NTabPane>
diff --git a/packages/server/src/controllers/auth.ts b/packages/server/src/controllers/auth.ts
new file mode 100644
index 00000000..2f1d63ef
--- /dev/null
+++ b/packages/server/src/controllers/auth.ts
@@ -0,0 +1,152 @@
+import type { Context } from 'koa'
+import { getCredentials, setCredentials, verifyCredentials, deleteCredentials } from '../services/credentials'
+import { getToken } from '../services/auth'
+
+/**
+ * GET /api/auth/status
+ * Check if username/password login is configured (public).
+ */
+export async function authStatus(ctx: Context) {
+  const cred = await getCredentials()
+  ctx.body = {
+    hasPasswordLogin: !!cred,
+    username: cred?.username || null,
+  }
+}
+
+/**
+ * POST /api/auth/login
+ * Authenticate with username/password (public).
+ * Returns the static token on success.
+ */
+export async function login(ctx: Context) {
+  const { username, password } = ctx.request.body as { username?: string; password?: string }
+  if (!username || !password) {
+    ctx.status = 400
+    ctx.body = { error: 'Username and password are required' }
+    return
+  }
+
+  const valid = await verifyCredentials(username, password)
+  if (!valid) {
+    ctx.status = 401
+    ctx.body = { error: 'Invalid username or password' }
+    return
+  }
+
+  const token = await getToken()
+  if (!token) {
+    ctx.status = 500
+    ctx.body = { error: 'Auth is disabled on this server' }
+    return
+  }
+
+  ctx.body = { token }
+}
+
+/**
+ * POST /api/auth/setup
+ * Set up username/password (protected).
+ */
+export async function setupPassword(ctx: Context) {
+  const { username, password } = ctx.request.body as { username?: string; password?: string }
+  if (!username || !password) {
+    ctx.status = 400
+    ctx.body = { error: 'Username and password are required' }
+    return
+  }
+  if (username.length < 2) {
+    ctx.status = 400
+    ctx.body = { error: 'Username must be at least 2 characters' }
+    return
+  }
+  if (password.length < 6) {
+    ctx.status = 400
+    ctx.body = { error: 'Password must be at least 6 characters' }
+    return
+  }
+
+  await setCredentials(username, password)
+  ctx.body = { success: true }
+}
+
+/**
+ * POST /api/auth/change-password
+ * Change password (protected).
+ */
+export async function changePassword(ctx: Context) {
+  const { currentPassword, newPassword } = ctx.request.body as { currentPassword?: string; newPassword?: string }
+  if (!currentPassword || !newPassword) {
+    ctx.status = 400
+    ctx.body = { error: 'Current password and new password are required' }
+    return
+  }
+  if (newPassword.length < 6) {
+    ctx.status = 400
+    ctx.body = { error: 'New password must be at least 6 characters' }
+    return
+  }
+
+  const cred = await getCredentials()
+  if (!cred) {
+    ctx.status = 400
+    ctx.body = { error: 'Password login not configured' }
+    return
+  }
+
+  // Verify current password — use the username from stored credentials
+  const valid = await verifyCredentials(cred.username, currentPassword)
+  if (!valid) {
+    ctx.status = 400
+    ctx.body = { error: 'Current password is incorrect' }
+    return
+  }
+
+  await setCredentials(cred.username, newPassword)
+  ctx.body = { success: true }
+}
+
+/**
+ * POST /api/auth/change-username
+ * Change username (protected).
+ */
+export async function changeUsername(ctx: Context) {
+  const { currentPassword, newUsername } = ctx.request.body as { currentPassword?: string; newUsername?: string }
+  if (!currentPassword || !newUsername) {
+    ctx.status = 400
+    ctx.body = { error: 'Current password and new username are required' }
+    return
+  }
+  if (newUsername.length < 2) {
+    ctx.status = 400
+    ctx.body = { error: 'Username must be at least 2 characters' }
+    return
+  }
+
+  const cred = await getCredentials()
+  if (!cred) {
+    ctx.status = 400
+    ctx.body = { error: 'Password login not configured' }
+    return
+  }
+
+  const valid = await verifyCredentials(cred.username, currentPassword)
+  if (!valid) {
+    ctx.status = 400
+    ctx.body = { error: 'Current password is incorrect' }
+    return
+  }
+
+  // Update username, keep the same password
+  await setCredentials(newUsername, currentPassword)
+  ctx.body = { success: true }
+}
+
+/**
+ * DELETE /api/auth/password
+ * Remove username/password login (protected).
+ */
+export async function removePassword(ctx: Context) {
+  await deleteCredentials()
+  ctx.body = { success: true }
+}
diff --git a/packages/server/src/routes/auth.ts b/packages/server/src/routes/auth.ts
new file mode 100644
index 00000000..56931e4f
--- /dev/null
+++ b/packages/server/src/routes/auth.ts
@@ -0,0 +1,14 @@
+import Router from '@koa/router'
+import * as ctrl from '../controllers/auth'
+
+// Public routes (no auth required)
+export const authPublicRoutes = new Router()
+authPublicRoutes.get('/api/auth/status', ctrl.authStatus)
+authPublicRoutes.post('/api/auth/login', ctrl.login)
+
+// Protected routes (auth required)
+export const authProtectedRoutes = new Router()
+authProtectedRoutes.post('/api/auth/setup', ctrl.setupPassword)
+authProtectedRoutes.post('/api/auth/change-password', ctrl.changePassword)
+authProtectedRoutes.post('/api/auth/change-username', ctrl.changeUsername)
+authProtectedRoutes.delete('/api/auth/password', ctrl.removePassword)
diff --git a/packages/server/src/routes/index.ts b/packages/server/src/routes/index.ts
index b81ac35c..088e4355 100644
--- a/packages/server/src/routes/index.ts
+++ b/packages/server/src/routes/index.ts
@@ -5,6 +5,7 @@ import { healthRoutes } from './health'
 import { webhookRoutes } from './webhook'
 import { uploadRoutes } from './upload'
 import { updateRoutes } from './update'
+import { authPublicRoutes, authProtectedRoutes } from './auth'
 
 // Hermes route modules
 import { sessionRoutes } from './hermes/sessions'
@@ -29,11 +30,13 @@ export function registerRoutes(app: any, requireAuth: (ctx: Context, next: Next)
   // --- Public routes (no auth required) ---
   app.use(healthRoutes.routes())
   app.use(webhookRoutes.routes())
+  app.use(authPublicRoutes.routes())
 
   // --- Auth middleware: all routes below require authentication ---
   app.use(requireAuth)
 
   // --- Protected routes (auth required) ---
+  app.use(authProtectedRoutes.routes())
   app.use(uploadRoutes.routes())
   app.use(updateRoutes.routes())           // Must be before proxy (proxy catch-all matches everything)
   app.use(sessionRoutes.routes())
diff --git a/packages/server/src/services/credentials.ts b/packages/server/src/services/credentials.ts
new file mode 100644
index 00000000..53714d0e
--- /dev/null
+++ b/packages/server/src/services/credentials.ts
@@ -0,0 +1,59 @@
+import { readFile, writeFile, mkdir, unlink } from 'fs/promises'
+import { existsSync } from 'fs'
+import { join } from 'path'
+import { homedir } from 'os'
+import { scryptSync, randomBytes } from 'node:crypto'
+
+const APP_HOME = join(homedir(), '.hermes-web-ui')
+const CREDENTIALS_FILE = join(APP_HOME, '.credentials')
+
+export interface Credentials {
+  username: string
+  password_hash: string
+  salt: string
+  created_at: number
+}
+
+const SCRYPT_OPTIONS = { N: 16384, r: 8, p: 1, maxmem: 64 * 1024 * 1024 }
+
+function hashPassword(password: string, salt: string): string {
+  return scryptSync(password, salt, 64, SCRYPT_OPTIONS).toString('hex')
+}
+
+export async function getCredentials(): Promise<Credentials | null> {
+  try {
+    const data = await readFile(CREDENTIALS_FILE, 'utf-8')
+    return JSON.parse(data)
+  } catch {
+    return null
+  }
+}
+
+export async function setCredentials(username: string, password: string): Promise<Credentials> {
+  const salt = randomBytes(16).toString('hex')
+  const password_hash = hashPassword(password, salt)
+  const cred: Credentials = { username, password_hash, salt, created_at: Date.now() }
+  await mkdir(APP_HOME, { recursive: true })
+  await writeFile(CREDENTIALS_FILE, JSON.stringify(cred, null, 2), { mode: 0o600 })
+  return cred
+}
+
+export async function deleteCredentials(): Promise<void> {
+  try {
+    await unlink(CREDENTIALS_FILE)
+  } catch {
+    // File may not exist
+  }
+}
+
+export async function verifyCredentials(username: string, password: string): Promise<boolean> {
+  const cred = await getCredentials()
+  if (!cred) return false
+  if (cred.username !== username) return false
+  const computed = hashPassword(password, cred.salt)
+  return computed === cred.password_hash
+}
+
+export function credentialsFileExists(): boolean {
+  return existsSync(CREDENTIALS_FILE)
+}