Phase 007: migrate every remaining view from naive-ui to Arco Design Vue

The project now has exactly one UI library. Every naive-ui component in
packages/client/src is replaced by its Arco equivalent across 24 views and
roughly 80 components, and naive-ui is dropped from package.json along with
its transitive vueuc / @css-render / vdirs / seemly dependencies.

The migration is rendering-layer only. No store logic, no API contract, and
no /chat-run payload was touched.

Three classes of leftover were invisible to `grep naive-ui` and are now
covered by tests/client/no-naive-ui.test.ts, which asserts all three:
  - dead .n-* class names in style blocks
  - dead --n-* custom properties
  - naive-ui in package.json

Notable behavioural traps handled along the way, recorded in
docs/arco-migration-rules.md:
  - a-input-password defaults to masked; passing default-visibility="false"
    would have exposed API keys in clear text
  - a-upload fires a real XHR unless auto-upload is false
  - nested Trigger components fight over the first element child, so the
    group-chat settings dropdown was flattened
  - Arco renders tooltip default-slot text inline, which was silently
    collapsing the chat and group-chat toolbars

packages/client/src/components/hermes/settings/SessionSettings.vue

@@ -1,5 +1,4 @@
 <script setup lang="ts">
-import { NInputNumber, NSelect, NSwitch } from "naive-ui";
 import { useMessage } from "@/composables/useMessage";
 import { useI18n } from "vue-i18n";
 import { useSettingsStore } from "@/stores/hermes/settings";
@@ -15,7 +14,7 @@ const { t } = useI18n();
 const debounceTimers: Record<string, ReturnType<typeof setTimeout>> = {};
 
 function save(values: Record<string, any>) {
-  // NSelect/NSwitch 等一次性操作，直接保存，不需要防抖
+  // 下拉/开关等一次性操作，直接保存，不需要防抖
   settingsStore.updateLocal('session_reset', values)
   settingsStore.saveSection('session_reset', values).then(() => {
     message.success(t("settings.saved"));
@@ -66,32 +65,32 @@ async function toggleWriteApproval(section: "memory" | "skills", value: boolean)
       :label="t('settings.session.requireAuth')"
       :hint="t('settings.session.requireAuthHint')"
     >
-      <NSwitch :value="settingsStore.approvals.mode === 'manual'" @update:value="toggleRequireAuth" />
+      <a-switch :model-value="settingsStore.approvals.mode === 'manual'" @update:model-value="(v) => toggleRequireAuth(v as boolean)" />
     </SettingRow>
     <SettingRow
       :label="t('settings.session.memoryWriteApproval')"
       :hint="t('settings.session.memoryWriteApprovalHint')"
     >
-      <NSwitch
-        :value="settingsStore.memory.write_approval === true"
-        @update:value="(value) => toggleWriteApproval('memory', value)"
+      <a-switch
+        :model-value="settingsStore.memory.write_approval === true"
+        @update:model-value="(value) => toggleWriteApproval('memory', value as boolean)"
       />
     </SettingRow>
     <SettingRow
       :label="t('settings.session.skillsWriteApproval')"
       :hint="t('settings.session.skillsWriteApprovalHint')"
     >
-      <NSwitch
-        :value="settingsStore.skills.write_approval === true"
-        @update:value="(value) => toggleWriteApproval('skills', value)"
+      <a-switch
+        :model-value="settingsStore.skills.write_approval === true"
+        @update:model-value="(value) => toggleWriteApproval('skills', value as boolean)"
       />
     </SettingRow>
     <SettingRow
       :label="t('settings.session.mode')"
       :hint="t('settings.session.modeHint')"
     >
-      <NSelect
-        :value="settingsStore.sessionReset.mode || 'both'"
+      <a-select
+        :model-value="settingsStore.sessionReset.mode || 'both'"
         :options="[
           { label: t('settings.session.modeBoth'), value: 'both' },
           { label: t('settings.session.modeIdle'), value: 'idle' },
@@ -100,44 +99,44 @@ async function toggleWriteApproval(section: "memory" | "skills", value: boolean)
         ]"
         size="small"
         class="input-md"
-        @update:value="(v) => save({ mode: v })"
+        @update:model-value="(v) => save({ mode: v })"
       />
     </SettingRow>
     <SettingRow
       :label="t('settings.session.idleMinutes')"
       :hint="t('settings.session.idleMinutesHint')"
     >
-      <NInputNumber
-        :value="settingsStore.sessionReset.idle_minutes"
+      <a-input-number
+        :model-value="settingsStore.sessionReset.idle_minutes"
         :min="10"
         :max="10080"
         :step="30"
         size="small"
         class="input-sm"
-        @update:value="(v) => v != null && debouncedSave('idle_minutes', v)"
+        @update:model-value="(v) => v != null && debouncedSave('idle_minutes', v)"
       />
     </SettingRow>
     <SettingRow
       :label="t('settings.session.atHour')"
       :hint="t('settings.session.atHourHint')"
     >
-      <NInputNumber
-        :value="settingsStore.sessionReset.at_hour"
+      <a-input-number
+        :model-value="settingsStore.sessionReset.at_hour"
         :min="0"
         :max="23"
         :step="1"
         size="small"
         class="input-sm"
-        @update:value="(v) => v != null && debouncedSave('at_hour', v)"
+        @update:model-value="(v) => v != null && debouncedSave('at_hour', v)"
       />
     </SettingRow>
     <SettingRow
       :label="t('settings.session.liveMonitorHumanOnly')"
       :hint="t('settings.session.liveMonitorHumanOnlyHint')"
     >
-      <NSwitch
-        :value="sessionBrowserPrefsStore.humanOnly"
-        @update:value="(value) => sessionBrowserPrefsStore.setHumanOnly(value)"
+      <a-switch
+        :model-value="sessionBrowserPrefsStore.humanOnly"
+        @update:model-value="(value) => sessionBrowserPrefsStore.setHumanOnly(value as boolean)"
       />
     </SettingRow>
   </section>