Phase 005: vendor ArkScope, land the Arco style baseline, and fix bridge interpreter resolution

- Vendor ArkScope decorative layers (ScrambleTitle / IsometricWave) with provenance notes; decorative-only per AGENTS.md red lines
- Migrate theme tokens to Arco, register the Arco theme, and add hook adapter composables (useMessage / useDialog / useNotification) with matching signatures
- Sample pages: LoginView and AppSidebar on the new baseline; docs/arco-mapping.md and docs/ui-baseline.md land
- agent-bridge: prefer the PM-selected venv from facts.json over legacy in-tree venvs (legacy lacks the mcp extra, so every MCP server showed 0 tools / not connected)
- agent-bridge python (vendored, deliberate deviation): MCP discovery import fallback and pyyaml -> hermes_yaml so plugins and MCP work under the PM env; install the mcp extra via `hermes pm install --extra mcp`
- Chat-chain fragment: docs/chat-chain-changes/2026-10-17-phase005-arkscope-baseline.md

Verified: harness:check, test (2020 passed), test:e2e (30 passed), build all green; manual: plugins 100/0 warnings, MCP 6/6 servers connected with 104 tools.

packages/client/src/components/layout/AppSidebar.vue

@@ -2,7 +2,7 @@
 import { computed, ref } from "vue";
 import { useRoute, useRouter } from "vue-router";
 import { useI18n } from "vue-i18n";
-import { NButton, NModal, useMessage, NTag } from "naive-ui";
+import { useMessage } from "@/composables/useMessage";
 import { useAppStore } from "@/stores/hermes/app";
 import { usePersistentRecord } from '@/composables/usePersistentRecord'
 import RouteLinkItem from '@/components/common/RouteLinkItem.vue'
@@ -352,14 +352,14 @@ function handleUpdateClick() {
         </span>
         <ThemeSwitch />
       </div>
-      <NButton v-if="appStore.clientOutdated" type="warning" size="tiny" block class="update-btn" @click="handleReloadClient">
+      <a-button v-if="appStore.clientOutdated" type="primary" status="warning" size="mini" long class="update-btn" @click="handleReloadClient">
         {{ t('sidebar.reloadClientVersion', { version: appStore.serverVersion }) }}
-      </NButton>
-      <NButton
+      </a-button>
+      <a-button
         v-else-if="appStore.updateAvailable"
         type="primary"
-        size="tiny"
-        block
+        size="mini"
+        long
         class="update-btn"
         :loading="!isDockerRuntime && appStore.updating"
         @click="handleUpdateClick"
@@ -367,7 +367,7 @@ function handleUpdateClick() {
         {{ !isDockerRuntime && appStore.updating
           ? t('sidebar.updating')
           : t('sidebar.updateVersion', { version: appStore.latestVersion }) }}
-      </NButton>
+      </a-button>
     </div>
 
     <div class="sidebar-top-actions">
@@ -386,7 +386,7 @@ function handleUpdateClick() {
       </button>
     </div>
 
-    <NModal v-model:show="showChangelog" preset="dialog" :title="t('sidebar.changelog')" style="width: 520px;">
+    <a-modal v-model:visible="showChangelog" :title="t('sidebar.changelog')" :width="520" :footer="false">
       <div class="changelog-list">
         <div v-for="entry in changelog" :key="entry.version" class="changelog-version-block">
           <div class="changelog-version-header">
@@ -398,9 +398,9 @@ function handleUpdateClick() {
           </ul>
         </div>
       </div>
-    </NModal>
+    </a-modal>
 
-    <NModal v-model:show="showDockerUpdateTip" preset="dialog" :title="t('sidebar.dockerUpdateTitle')" style="width: 480px;">
+    <a-modal v-model:visible="showDockerUpdateTip" :title="t('sidebar.dockerUpdateTitle')" :width="480" :footer="false">
       <div class="docker-update-modal">
         <p>{{ t('sidebar.dockerUpdateGuide') }}</p>
         <div class="docker-update-commands">
@@ -408,10 +408,10 @@ function handleUpdateClick() {
           <code class="docker-command">docker compose up -d --force-recreate</code>
         </div>
         <p class="docker-update-note">
-          <NTag size="small" type="info" :bordered="false">{{ t('sidebar.dockerUpdateNote') }}</NTag>
+          <a-tag size="small" color="arcoblue" :bordered="false">{{ t('sidebar.dockerUpdateNote') }}</a-tag>
         </p>
       </div>
-    </NModal>
+    </a-modal>
   </aside>
 </template>