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/App.vue

@@ -1,9 +1,7 @@
 <script setup lang="ts">
 import { onUnmounted, computed, watch } from 'vue'
 import { useRoute } from 'vue-router'
-import { darkTheme, NConfigProvider, NMessageProvider, NDialogProvider, NNotificationProvider } from 'naive-ui'
 import { useI18n } from 'vue-i18n'
-import { getThemeOverrides } from '@/styles/theme'
 import { useTheme } from '@/composables/useTheme'
 import AppSidebar from '@/components/layout/AppSidebar.vue'
 import { useKeyboard } from '@/composables/useKeyboard'
@@ -12,14 +10,11 @@ import SessionSearchModal from '@/components/hermes/chat/SessionSearchModal.vue'
 import AuthEventListener from '@/components/auth/AuthEventListener.vue'
 import DefaultCredentialPrompt from '@/components/auth/DefaultCredentialPrompt.vue'
 
-const { isDark, isComic } = useTheme()
+const { isDark } = useTheme()
 const { t } = useI18n()
 const appStore = useAppStore()
 const route = useRoute()
 
-const themeOverrides = computed(() => getThemeOverrides(isDark.value, isComic.value))
-const naiveTheme = computed(() => isDark.value ? darkTheme : null)
-
 const isLoginPage = computed(() => route.name === 'login')
 const usesPageSidebar = computed(() =>
   ['hermes.chat', 'hermes.session', 'hermes.history', 'hermes.historySession', 'hermes.globalAgent', 'hermes.globalAgentSession', 'hermes.groupChat', 'hermes.groupChatRoom', 'hermes.workflow'].includes(route.name as string),
@@ -60,32 +55,26 @@ useKeyboard()
 </script>
 
 <template>
-  <NConfigProvider :theme="naiveTheme" :theme-overrides="themeOverrides">
-    <NMessageProvider>
-      <AuthEventListener />
-      <NDialogProvider>
-        <NNotificationProvider>
-          <div class="app-shell">
-            <div v-if="nodeVersionLow" class="node-warning-bar">
-              {{ t('sidebar.nodeVersionWarning', { version: appStore.nodeVersion }) }}
-            </div>
-            <div class="app-layout" :class="{ 'no-sidebar': isLoginPage || !showAppSidebar }">
-              <button v-if="showMobileMenuButton" class="hamburger-btn" @click="handleMobileMenuClick">
-                <img src="/logo.png" alt="Menu" style="width: 24px; height: 24px;" />
-              </button>
-              <div v-if="!isLoginPage && showAppSidebar && appStore.sidebarOpen" class="mobile-backdrop" @click="appStore.closeSidebar" />
-              <AppSidebar v-if="!isLoginPage && showAppSidebar" />
-              <main class="app-main">
-                <router-view />
-              </main>
-            </div>
-          </div>
-          <SessionSearchModal />
-          <DefaultCredentialPrompt />
-        </NNotificationProvider>
-      </NDialogProvider>
-    </NMessageProvider>
-  </NConfigProvider>
+  <div class="app-root" :class="{ dark: isDark }">
+    <AuthEventListener />
+    <div class="app-shell">
+      <div v-if="nodeVersionLow" class="node-warning-bar">
+        {{ t('sidebar.nodeVersionWarning', { version: appStore.nodeVersion }) }}
+      </div>
+      <div class="app-layout" :class="{ 'no-sidebar': isLoginPage || !showAppSidebar }">
+        <button v-if="showMobileMenuButton" class="hamburger-btn" @click="handleMobileMenuClick">
+          <img src="/logo.png" alt="Menu" style="width: 24px; height: 24px;" />
+        </button>
+        <div v-if="!isLoginPage && showAppSidebar && appStore.sidebarOpen" class="mobile-backdrop" @click="appStore.closeSidebar" />
+        <AppSidebar v-if="!isLoginPage && showAppSidebar" />
+        <main class="app-main">
+          <router-view />
+        </main>
+      </div>
+    </div>
+    <SessionSearchModal />
+    <DefaultCredentialPrompt />
+  </div>
 </template>
 
 <style scoped lang="scss">