fix: 修复大数据导致应用崩溃 + 图片上传冗余工具调用 + 预存类型错误

## 崩溃修复 (renderer OOM)
view_image 返回的 base64 dataUrl(~6.7MB/张)经 dataUrl 白名单跳过截断后,
在 IPC/store/DOM 链路被反复放大,累积撑爆渲染进程堆导致 OOM 崩溃退出。
- 新增 src/lib/tool-result-display.ts: toDisplayResult() 在显示边界剥离 dataUrl
- ToolResultBlock/TraceStep 渲染前套用,store 原始 result 不变(LLM 看图链路完整)
- data:export 剥离 dataUrl/preview + 每会话 2000 条消息上限 + truncated 标记

## 图片上传修复
用户上传图片并告知 AI 后,AI 仍调 view_image 去磁盘读取。
根因: 附件提示 "do NOT search in workspace" 与 view_image "Read an image file"
语义冲突,AI 认为"读取"≠"搜索"。强化提示明确禁止调用 view_image/read_file 读取已上传图片。

## 预存类型修复
- ConfirmationDialog: MUI v9 移除 disableEscapeKeyDown 顶层 prop,迁移到 onClose reason 拦截
- ContextMenu/Sidebar: TokenUsage 对象字面量补齐 lastInputTokens/lastCompressedSaved

## 依赖升级
- @metona-team/metona-toast 0.1.2 → 0.2.1 (TypeScript 重构,修复 0.1.2 版本号打包 bug)

## 其他
- 删除仓库根目录误生成的 nul 垃圾文件
- bump version to 0.3.22

package-lock.json

@@ -1,17 +1,17 @@
 {
   "name": "metona-ai-desktop",
-  "version": "0.3.21",
+  "version": "0.3.22",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "metona-ai-desktop",
-      "version": "0.3.21",
+      "version": "0.3.22",
       "license": "MIT",
       "dependencies": {
         "@emotion/react": "^11.14.0",
         "@emotion/styled": "^11.14.1",
-        "@metona-team/metona-toast": "^0.1.2",
+        "@metona-team/metona-toast": "^0.2.1",
         "@modelcontextprotocol/sdk": "^1.12.1",
         "@mui/icons-material": "^9.1.1",
         "@mui/material": "^9.1.2",
@@ -703,9 +703,9 @@
       }
     },
     "node_modules/@electron/universal/node_modules/fs-extra": {
-      "version": "11.3.6",
-      "resolved": "https://registry.npmmirror.com/fs-extra/-/fs-extra-11.3.6.tgz",
-      "integrity": "sha512-w8ZNZr2mKIc7qeNaQ9AVPT1+iFaI+Avd4xudVOvdDJ8VytREi1Ft5Ih7hd9jjehod8vAM5GMsfQ/TpPf4EyoEA==",
+      "version": "11.4.0",
+      "resolved": "https://registry.npmmirror.com/fs-extra/-/fs-extra-11.4.0.tgz",
+      "integrity": "sha512-EQsFzMUJkCKGr1ePqlYADkIUmHW1s3ZXr5Yqy6wbGrfUCphpl2maM/kyOIRA2HpP3AaFQTZXD4ldjek+nccddA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -779,9 +779,9 @@
       }
     },
     "node_modules/@electron/windows-sign/node_modules/fs-extra": {
-      "version": "11.3.6",
-      "resolved": "https://registry.npmmirror.com/fs-extra/-/fs-extra-11.3.6.tgz",
-      "integrity": "sha512-w8ZNZr2mKIc7qeNaQ9AVPT1+iFaI+Avd4xudVOvdDJ8VytREi1Ft5Ih7hd9jjehod8vAM5GMsfQ/TpPf4EyoEA==",
+      "version": "11.4.0",
+      "resolved": "https://registry.npmmirror.com/fs-extra/-/fs-extra-11.4.0.tgz",
+      "integrity": "sha512-EQsFzMUJkCKGr1ePqlYADkIUmHW1s3ZXr5Yqy6wbGrfUCphpl2maM/kyOIRA2HpP3AaFQTZXD4ldjek+nccddA==",
       "dev": true,
       "license": "MIT",
       "optional": true,
@@ -1871,9 +1871,9 @@
       }
     },
     "node_modules/@metona-team/metona-toast": {
-      "version": "0.1.2",
-      "resolved": "https://git.metona.cn/api/packages/MetonaTeam/npm/%40metona-team%2Fmetona-toast/-/0.1.2/metona-toast-0.1.2.tgz",
-      "integrity": "sha512-r8q9CYhtYbsz2hH3ffpqNeo7hV0f5qXWiL65boisc0VXFNht0ZDNn/ZbWneYM2/bOqC7Vh7dJlHe0GSVbPJ3Lg==",
+      "version": "0.2.1",
+      "resolved": "https://git.metona.cn/api/packages/MetonaTeam/npm/%40metona-team%2Fmetona-toast/-/0.2.1/metona-toast-0.2.1.tgz",
+      "integrity": "sha512-JPK+83T6pULRbMxZ67Baxsdnggl0aGCteY8A6mLg1ePK6dLfl2WBtxH0x4Q9CL/+Llbh5ozCVKPKcUurTRjAbw==",
       "license": "MIT"
     },
     "node_modules/@modelcontextprotocol/sdk": {