diff --git a/src/engines/hermes/pages/config.js b/src/engines/hermes/pages/config.js
index 982c641..264fc94 100644
--- a/src/engines/hermes/pages/config.js
+++ b/src/engines/hermes/pages/config.js
@@ -4,6 +4,7 @@
 import { t } from '../../../lib/i18n.js'
 import { api } from '../../../lib/tauri-api.js'
 import { toast } from '../../../components/toast.js'
+import { humanizeError } from '../../../lib/humanize-error.js'
 
 export function render() {
   const el = document.createElement('div')
@@ -61,7 +62,7 @@ export function render() {
       const data = await api.hermesConfigRawRead()
       yaml = data?.yaml || ''
     } catch (err) {
-      error = String(err?.message || err).replace(/^Error:\s*/, '')
+      error = humanizeError(err, t('engine.hermesConfigLoadFailed') || 'Load config failed')
     } finally {
       loading = false
       draw()
@@ -78,7 +79,7 @@ export function render() {
       await api.hermesConfigRawWrite(yaml)
       toast(t('engine.hermesConfigSaveSuccess'), 'success')
     } catch (err) {
-      error = String(err?.message || err).replace(/^Error:\s*/, '')
+      error = humanizeError(err, t('engine.hermesConfigSaveFailed') || 'Save failed')
       toast(error, 'error')
     } finally {
       saving = false
diff --git a/src/engines/hermes/pages/env-editor.js b/src/engines/hermes/pages/env-editor.js
index e906ad4..b369c19 100644
--- a/src/engines/hermes/pages/env-editor.js
+++ b/src/engines/hermes/pages/env-editor.js
@@ -9,6 +9,7 @@
  */
 import { api } from '../../../lib/tauri-api.js'
 import { toast } from '../../../components/toast.js'
+import { humanizeError } from '../../../lib/humanize-error.js'
 
 // NOTE: i18n keys for this page are not yet wired up in src/locales; using
 // inline Chinese copy (with occasional English fallback) for now. When the
@@ -214,7 +215,7 @@ export function render() {
           row.revealed = true
           renderList()
         } catch (err) {
-          toast(String(err).replace(/^Error:\s*/, ''), 'error')
+          toast(humanizeError(err, '读取失败'), 'error')
         }
       })
       rowEl.querySelector('.env-cancel-btn')?.addEventListener('click', () => {
@@ -249,7 +250,7 @@ export function render() {
           toast('已保存', 'success')
           renderList()
         } catch (err) {
-          toast(String(err).replace(/^Error:\s*/, ''), 'error')
+          toast(humanizeError(err, '保存失败'), 'error')
         }
       })
       rowEl.querySelector('.env-delete-btn')?.addEventListener('click', async () => {
@@ -260,7 +261,7 @@ export function render() {
           toast('已删除', 'success')
           renderList()
         } catch (err) {
-          toast(String(err).replace(/^Error:\s*/, ''), 'error')
+          toast(humanizeError(err, '删除失败'), 'error')
         }
       })
     })
@@ -282,7 +283,7 @@ export function render() {
         isNew: false,
       }))
     } catch (err) {
-      loadError = String(err).replace(/^Error:\s*/, '')
+      loadError = humanizeError(err, '加载失败')
       const errEl = el.querySelector('#env-error')
       if (errEl) {
         errEl.textContent = loadError
diff --git a/src/engines/hermes/pages/extensions.js b/src/engines/hermes/pages/extensions.js
index 935713f..7e93b5b 100644
--- a/src/engines/hermes/pages/extensions.js
+++ b/src/engines/hermes/pages/extensions.js
@@ -2,6 +2,7 @@ import { api } from '../../../lib/tauri-api.js'
 import { icon } from '../../../lib/icons.js'
 import { toast } from '../../../components/toast.js'
 import { t } from '../../../lib/i18n.js'
+import { humanizeError } from '../../../lib/humanize-error.js'
 
 function esc(value) {
   return String(value || '')
@@ -137,14 +138,14 @@ export function render() {
         const probe = await api.hermesDashboardProbe().catch(() => ({ running: false, port: 9119 }))
         if (probe?.running) {
           try { await openWith(probe.port || 9119) }
-          catch (err) { toast(t('engine.dashNativePanelOpenFail') + ': ' + (err?.message || err), 'error') }
+          catch (err) { toast(humanizeError(err, t('engine.dashNativePanelOpenFail')), 'error') }
           return
         }
         // 2. auto-start
         const r = await api.hermesDashboardStart().catch(() => ({ started: false, kind: 'spawn_failed', port: probe?.port || 9119 }))
         if (r?.started) {
           try { await openWith(r.port || 9119) }
-          catch (err) { toast(t('engine.dashNativePanelOpenFail') + ': ' + (err?.message || err), 'error') }
+          catch (err) { toast(humanizeError(err, t('engine.dashNativePanelOpenFail')), 'error') }
           return
         }
         // 3. 失败 → toast（dashboard 页面有完整安装流程，这里只引导）
@@ -166,7 +167,7 @@ export function render() {
           toast(t('engine.extensionsThemeSaved'), 'success')
           draw()
         } catch (err) {
-          toast(String(err?.message || err).replace(/^Error:\s*/, ''), 'error')
+          toast(humanizeError(err, t('engine.extensionsThemeSaveFailed') || 'Save theme failed'), 'error')
         }
       })
     })
@@ -187,7 +188,7 @@ export function render() {
       plugins = Array.isArray(pluginData) ? pluginData : []
       analytics = usageData || null
     } catch (err) {
-      error = String(err?.message || err).replace(/^Error:\s*/, '')
+      error = humanizeError(err, t('engine.extensionsLoadFailed') || 'Load failed')
     } finally {
       loading = false
       draw()
@@ -200,7 +201,7 @@ export function render() {
       await load()
       toast(t('engine.extensionsPluginsRescanned'), 'success')
     } catch (err) {
-      toast(String(err?.message || err).replace(/^Error:\s*/, ''), 'error')
+      toast(humanizeError(err, t('engine.extensionsRescanFailed') || 'Rescan failed'), 'error')
     }
   }
 
diff --git a/src/engines/hermes/pages/lazy-deps.js b/src/engines/hermes/pages/lazy-deps.js
index 3c1fa10..4681021 100644
--- a/src/engines/hermes/pages/lazy-deps.js
+++ b/src/engines/hermes/pages/lazy-deps.js
@@ -71,7 +71,7 @@ async function loadAndRender(page) {
   try {
     featuresResp = await api.hermesLazyDepsFeatures()
   } catch (e) {
-    content.innerHTML = `<div style="color:var(--error);padding:20px">${escapeHtml(t('hermesLazyDeps.loadFailed'))}: ${escapeHtml(String(e))}</div>`
+    content.innerHTML = `<div style="color:var(--error);padding:20px">${escapeHtml(humanizeError(e, t('hermesLazyDeps.loadFailed')))}</div>`
     return
   }
 
diff --git a/src/engines/hermes/pages/sessions.js b/src/engines/hermes/pages/sessions.js
index ae58bae..725bc98 100644
--- a/src/engines/hermes/pages/sessions.js
+++ b/src/engines/hermes/pages/sessions.js
@@ -4,6 +4,7 @@ import { toast } from '../../../components/toast.js'
 import { showConfirm } from '../../../components/modal.js'
 import { icon } from '../../../lib/icons.js'
 import { getChatStore, getSourceLabel } from '../lib/chat-store.js'
+import { humanizeError } from '../../../lib/humanize-error.js'
 
 function escHtml(value) {
   return String(value ?? '')
@@ -163,7 +164,7 @@ export function render() {
       selected = new Set([...selected].filter(key => rows.some(s => sessionKey(s) === key)))
       selectedKey = selectedKey && rows.some(s => sessionKey(s) === selectedKey) ? selectedKey : (visible[0] ? sessionKey(visible[0]) : null)
     } catch (err) {
-      toast(String(err?.message || err), 'error')
+      toast(humanizeError(err, t('engine.sessionsLoadFailed') || 'Load sessions failed'), 'error')
     } finally {
       loading = false
       draw()
@@ -184,7 +185,7 @@ export function render() {
       session.source = session.source || detail?.source || ''
       session.messageCount = session.messageCount || session.messages.length
     } catch (err) {
-      toast(t('engine.sessionsDetailLoadFailed') + ': ' + (err?.message || err), 'error')
+      toast(humanizeError(err, t('engine.sessionsDetailLoadFailed')), 'error')
     } finally {
       detailLoadingKey = null
       if (redraw) draw()
@@ -342,7 +343,7 @@ export function render() {
       await store.switchSession(session.id)
       window.location.hash = '#/h/chat'
     } catch (err) {
-      toast(String(err?.message || err), 'error')
+      toast(humanizeError(err, t('engine.sessionsSwitchFailed') || 'Switch failed'), 'error')
     } finally {
       busy = false
       draw()
@@ -364,7 +365,7 @@ export function render() {
       if (session.profile === store.state.activeProfile) await store.loadSessions()
       toast(t('engine.chatSessionDeleted'), 'success')
     } catch (err) {
-      toast(t('engine.chatDeleteFailed') + ': ' + (err?.message || err), 'error')
+      toast(humanizeError(err, t('engine.chatDeleteFailed')), 'error')
     }
     draw()
   }
@@ -475,7 +476,7 @@ export function render() {
         URL.revokeObjectURL(url)
         toast(t('engine.sessionsExportSuccess'), 'success')
       } catch (err) {
-        toast(t('engine.sessionsExportFailed') + ': ' + (err?.message || err), 'error')
+        toast(humanizeError(err, t('engine.sessionsExportFailed')), 'error')
       } finally {
         btn.disabled = false
       }
diff --git a/src/engines/hermes/pages/usage.js b/src/engines/hermes/pages/usage.js
index 5b1a507..f3f8237 100644
--- a/src/engines/hermes/pages/usage.js
+++ b/src/engines/hermes/pages/usage.js
@@ -1,6 +1,7 @@
 import { api } from '../../../lib/tauri-api.js'
 import { t } from '../../../lib/i18n.js'
 import { icon } from '../../../lib/icons.js'
+import { humanizeError } from '../../../lib/humanize-error.js'
 
 const DAY_MS = 24 * 60 * 60 * 1000
 
@@ -374,8 +375,8 @@ export function render() {
         if (!alive) return
         sessions = Array.isArray(rows) ? rows : []
         analytics = null
-      } catch (_) {
-        error = err?.message || String(err)
+      } catch (err) {
+        error = humanizeError(err, t('engine.usageLoadFailed') || 'Load usage failed')
       }
     } finally {
       if (!alive) return
diff --git a/src/engines/hermes/style/hermes.css b/src/engines/hermes/style/hermes.css
index 7ab790a..5f1107d 100644
--- a/src/engines/hermes/style/hermes.css
+++ b/src/engines/hermes/style/hermes.css
@@ -5265,6 +5265,7 @@ body[data-active-engine="hermes"][data-theme="dark"] {
   margin-bottom: 6px;
   display: -webkit-box;
   -webkit-line-clamp: 2;
+  line-clamp: 2;
   -webkit-box-orient: vertical;
   overflow: hidden;
 }
diff --git a/src/locales/modules/engine.js b/src/locales/modules/engine.js
index 64835ca..38e1632 100644
--- a/src/locales/modules/engine.js
+++ b/src/locales/modules/engine.js
@@ -614,6 +614,15 @@ export default {
   hermesGroupChatRunFailed: _('运行失败', 'Run failed', '執行失敗'),
   hermesGroupChatNoOutput: _('（无输出）', '(no output)', '（無輸出）'),
   hermesGroupChatWebUnsupported: _('Web 模式不支持群聊（依赖 hermesAgentRun，需桌面端事件桥）。请用桌面客户端。', 'Group chat is not supported in Web mode (requires desktop event bridge). Use the desktop app.', 'Web 模式不支援群聊（依賴 hermesAgentRun，需桌面端事件橋）。請用桌面客戶端。'),
+  // Hermes UX 小白化：补齐 humanizeError fallback 用到的 i18n
+  sessionsLoadFailed: _('加载会话失败', 'Load sessions failed', '載入會話失敗'),
+  sessionsSwitchFailed: _('切换会话失败', 'Switch session failed', '切換會話失敗'),
+  usageLoadFailed: _('加载用量失败', 'Load usage failed', '載入用量失敗'),
+  extensionsThemeSaveFailed: _('保存主题失败', 'Save theme failed', '儲存主題失敗'),
+  extensionsLoadFailed: _('加载扩展失败', 'Load extensions failed', '載入擴充功能失敗'),
+  extensionsRescanFailed: _('重新扫描失败', 'Rescan failed', '重新掃描失敗'),
+  hermesConfigLoadFailed: _('加载配置失败', 'Load config failed', '載入設定失敗'),
+  hermesConfigSaveFailed: _('保存配置失败', 'Save config failed', '儲存設定失敗'),
   // Web 模式（远程浏览器）下流式聊天暂不可用
   chatWebModeStreamingUnsupported: _(
     'Web 模式暂不支持 Hermes 实时流式聊天（依赖桌面端事件桥）。请打开桌面客户端使用此功能。',