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/hermes/chat/ChatInput.vue

@@ -7,7 +7,8 @@ import { useSettingsStore } from '@/stores/hermes/settings'
 import { fetchContextLength } from '@/api/hermes/sessions'
 import { setModelContext } from '@/api/hermes/model-context'
 import { fetchSkills, type SkillCategory, type SkillInfo } from '@/api/hermes/skills'
-import { NButton, NTooltip, NModal, NInputNumber, NPopselect, NDropdown, useMessage, type DropdownOption } from 'naive-ui'
+import { NButton, NTooltip, NModal, NInputNumber, NPopselect, NDropdown, type DropdownOption } from 'naive-ui'
+import { useMessage } from '@/composables/useMessage'
 import { computed, ref, nextTick, onMounted, onUnmounted, watch, h } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useToolTraceVisibility } from '@/composables/useToolTraceVisibility'

packages/client/src/components/hermes/chat/ChatPanel.vue

@@ -4,19 +4,8 @@ import { useChatStore, type Session } from "@/stores/hermes/chat";
 import { useAppStore } from "@/stores/hermes/app";
 import { useProfilesStore } from "@/stores/hermes/profiles";
 import { useSessionBrowserPrefsStore } from "@/stores/hermes/session-browser-prefs";
-import {
-  NButton,
-  NDrawer,
-  NDrawerContent,
-  NDropdown,
-  NInput,
-  NModal,
-  NSelect,
-  NTooltip,
-  NPopconfirm,
-  useMessage,
-  type DropdownOption,
-} from "naive-ui";
+import { NButton, NDrawer, NDrawerContent, NDropdown, NInput, NModal, NSelect, NTooltip, NPopconfirm, type DropdownOption } from "naive-ui";
+import { useMessage } from "@/composables/useMessage";
 import { computed, nextTick, onMounted, onUnmounted, ref, watch } from "vue";
 import { useRouter } from "vue-router";
 import { useI18n } from "vue-i18n";

packages/client/src/components/hermes/chat/FolderPicker.vue

@@ -1,6 +1,8 @@
 <script setup lang="ts">
 import { ref, computed, nextTick, onMounted, watch } from 'vue'
-import { NButton, NDropdown, NInput, NModal, NSpace, NSpin, useDialog, useMessage } from 'naive-ui'
+import { NButton, NDropdown, NInput, NModal, NSpace, NSpin } from 'naive-ui'
+import { useDialog } from '@/composables/useDialog'
+import { useMessage } from '@/composables/useMessage'
 import { useI18n } from 'vue-i18n'
 import { request } from '@/api/client'
 import { copyToClipboard } from '@/utils/clipboard'

packages/client/src/components/hermes/chat/MarkdownRenderer.vue

@@ -1,7 +1,8 @@
 <script setup lang="ts">
 import { computed, nextTick, onBeforeUnmount, onMounted, ref, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
-import { NDrawer, NDrawerContent, NSpin, useMessage } from 'naive-ui'
+import { NDrawer, NDrawerContent, NSpin } from 'naive-ui'
+import { useMessage } from '@/composables/useMessage'
 import type MarkdownIt from 'markdown-it'
 import MarkdownItConstructor from 'markdown-it'
 import katex from 'katex'

packages/client/src/components/hermes/chat/MessageItem.vue

@@ -2,7 +2,8 @@
 import type { Message, ContentBlock } from "@/stores/hermes/chat";
 import { computed, defineAsyncComponent, onBeforeUnmount, onMounted, ref, watchEffect } from "vue";
 import { useI18n } from "vue-i18n";
-import { NButton, NDrawer, NDrawerContent, NSpin, useMessage } from "naive-ui";
+import { NButton, NDrawer, NDrawerContent, NSpin } from "naive-ui";
+import { useMessage } from "@/composables/useMessage";
 import { downloadFile, getDownloadUrl } from "@/api/hermes/download";
 import { copyToClipboard } from "@/utils/clipboard";
 import MarkdownRenderer from "./MarkdownRenderer.vue";

packages/client/src/components/hermes/chat/SessionSearchModal.vue

@@ -1,7 +1,8 @@
 <script setup lang="ts">
 import { computed, nextTick, onMounted, onUnmounted, ref, watch } from 'vue'
 import { useRouter } from 'vue-router'
-import { NButton, NInput, NModal, NSpin, useMessage } from 'naive-ui'
+import { NButton, NInput, NModal, NSpin } from 'naive-ui'
+import { useMessage } from '@/composables/useMessage'
 import { useI18n } from 'vue-i18n'
 import { fetchSessions, searchSessions, type SessionSearchResult, type SessionSummary } from '@/api/hermes/sessions'
 import { useChatStore } from '@/stores/hermes/chat'

packages/client/src/components/hermes/chat/TerminalPanel.vue

@@ -5,7 +5,8 @@ import { FitAddon } from "@xterm/addon-fit";
 import { WebLinksAddon } from "@xterm/addon-web-links";
 import "@xterm/xterm/css/xterm.css";
 import { getApiKey, getBaseUrlValue } from "@/api/client";
-import { NButton, NPopconfirm, NTooltip, NSelect, useMessage } from "naive-ui";
+import { NButton, NPopconfirm, NTooltip, NSelect } from "naive-ui";
+import { useMessage } from "@/composables/useMessage";
 import { useI18n } from "vue-i18n";
 import type { ITheme } from "@xterm/xterm";