remove the desktop-pet system

The pet feature was three loosely coupled subsystems that no core flow
depended on: the Petdex catalog page, the pet install/preference store, and
the pet-state socket. All three are removed.

The only cross-boundary touch point was a try/catch-wrapped observer that
mapped chat-run events to pet animations. Removing it leaves the /chat-run
event contract unchanged: no event name, field name, field type, or emission
timing changed.

Removing petdexPublicRoutes also closes the unauthenticated outbound proxy
at /api/hermes/petdex/asset, which shrinks the SSRF surface.

docs/cyber-theme-plan.md

@@ -66,7 +66,7 @@ CYBER 是本项目**唯一**的视觉语言。`docs/ui-baseline.md` 是它的**
 | --- | --- | --- |
 | **已落地** | `SettingsView.vue` | `cy-*` 骨架 + 令牌 |
 | **已落地（无骨架）** | `LoginView.vue` | 令牌密度最高（24 处），装饰位面合规 |
-| **部分落地** | `ChatView` / `GroupChatView` / `GlobalAgentView` / `HistoryView` / `JourneyView` / `WorkflowView` / `LogsView` / `PerformanceView` / `PluginsView` / `McpManagerView` / `MemoryView` / `PetdexView` / `TerminalView` / `SkillsView` / `SkillsUsageView` / `DevicesView` / `KanbanView` / `FilesView` / `HermesMissingView` | 用了基础令牌，但布局仍是 Arco 原生（`a-card` / `a-tabs`） |
+| **部分落地** | `ChatView` / `GroupChatView` / `GlobalAgentView` / `HistoryView` / `JourneyView` / `WorkflowView` / `LogsView` / `PerformanceView` / `PluginsView` / `McpManagerView` / `MemoryView` / `TerminalView` / `SkillsView` / `SkillsUsageView` / `DevicesView` / `KanbanView` / `FilesView` / `HermesMissingView` | 用了基础令牌，但布局仍是 Arco 原生（`a-card` / `a-tabs`） |
 | **未落地** | `JobsView` / `ModelsView` / `ProfilesView` / `UsageView` / `ChannelsView` / `VersionPreviewView` | style 块几乎没有色值，也没有语义色 |
 
 **CYBER 目前是「孤岛式」的**：设置页 + 聊天链是两块完整的岛，其余 20+ 页面停留在迁移前原样。
@@ -170,7 +170,7 @@ CYBER 主题**完成**的定义是下面五条同时成立：
 2. 按页面分批改，每批 3-5 个页面：
    - **批次 A（数据展示型）**：`UsageView` / `JobsView` / `LogsView` / `ModelsView` / `ProfilesView`
    - **批次 B（配置型）**：`DevicesView` / `ChannelsView` / `PluginsView` / `McpManagerView`
-   - **批次 C（内容型）**：`FilesView` / `MemoryView` / `PetdexView` / `SkillsView` / `SkillsUsageView`
+   - **批次 C（内容型）**：`FilesView` / `MemoryView` / `SkillsView` / `SkillsUsageView`
    - **批次 D（复杂型）**：`WorkflowView` / `KanbanView` / `JourneyView` / `PerformanceView` / `HistoryView` / `HermesMissingView` / `VersionPreviewView`
 3. 每批的替换模式：**Arco 结构 → `.cy-panel` 外壳**，但**保留** Arco 组件本身
    （`a-table` / `a-form` / `a-select` 都不动）。Arco 组件的外观已经被
@@ -192,7 +192,7 @@ CYBER 主题**完成**的定义是下面五条同时成立：
 | --- | --- | --- |
 | A | `UsageView` / `JobsView` / `LogsView` / `ModelsView` / `ProfilesView` | 大部分已合规；`JobsView` 补 `cy-sec-t` 分节标题 + i18n key `jobs.sectionList` |
 | B | `DevicesView` / `ChannelsView` / `PluginsView` / `McpManagerView` | `ChannelsView` 内容区包进 `cy-panel`；`McpManagerView` 已合规（modal 内列表保留自定义边框，避免卡片套卡片） |
-| C | `FilesView` / `MemoryView` / `PetdexView` / `SkillsView` / `SkillsUsageView` | 已合规；`PetdexView` 棋盘格 `rgba(127,127,127,0.08)` → `rgba(var(--text-muted-rgb), 0.08)` |
+| C | `FilesView` / `MemoryView` / `SkillsView` / `SkillsUsageView` | 已合规 |
 | D | `WorkflowView` / `KanbanView` / `JourneyView` / `PerformanceView` / `HistoryView` / `HermesMissingView` / `VersionPreviewView` / `TerminalView` / `GlobalAgentView` | **全部已是令牌驱动**。这些是专用布局（画布 / 看板 / 终端 / 聊天流），原型的 `panel` 结构不适用，不需要套骨架类 |
 
 **批次 D 的判定依据**：「cy-* 计数为 0」是**误报**。判断标准应是
@@ -274,7 +274,6 @@ CYBER 主题**完成**的定义是下面五条同时成立：
 
 | 位置 | 问题 | 修法 |
 | --- | --- | --- |
-| `views/hermes/PetdexView.vue` | 棋盘格 `rgba(127,127,127,0.08)` | → `rgba(var(--text-muted-rgb), 0.08)` |
 | `utils/hermes/kanban-status-colors.ts` | 分类色 `#c084fc` + `rgba(192,132,252,0.14)` 字面量 | 新增令牌 `--kanban-review` / `--kanban-review-rgb`；灰阶改走 `--text-muted-rgb` |
 | `components/hermes/chat/MessageList.vue` | 浅色主题遗留阴影 `rgba(15,23,42,0.05)` | → `var(--shadow-sm)` |