桌面应用图标替换为 B-brackets 设计（深藏青 + 白/蓝花括号）

- icon.svg 取自 opsx-icon-options/api/B-brackets.svg，全套光栅重生成：
  icon.icns（iconutil）、icon.ico（PNG-in-ICO 6 尺寸）、16-1024 PNG、Windows Square*/StoreLogo
- 替换 Tauri 脚手架默认五角星图标；GUI 重启实测 Dock 图标已生效
- 服务全量重启：server 8787（官网/文档 200）+ web 5173 + 桌面 GUI

.ui-review/accept-2026-09-19/web-reg-result.json

@@ -0,0 +1,24 @@
+{
+  "verdict": "有缺陷",
+  "pass": [
+    "通道切换往返: 自动|Web 代理|浏览器直连|桌面直连",
+    "打开环境变量面板",
+    "集合树切换到回归 GET",
+    "URL 脏点已写入",
+    "脏点/保存相关 UI 可见或已 Cmd+S",
+    "发送 HTTP 以产生历史",
+    "新建 WebSocket",
+    "填写 WS URL",
+    "填写 Authorization Header",
+    "连接后出现状态文案",
+    "重放 toast: 重放成功 · HTTP 200 · 22ms"
+  ],
+  "fail": [
+    "WS流程: locator.click: Timeout 15000ms exceeded.\nCall log:\n  - waiting for getByRole('button', { name: /发送/ }).first()\n    - locator resolved to <button disabled class=\"ops-btn ops-btn-primary\">发送消息</button>\n  - attempting click action\n    2 × waiting for element to be visible, enabled and stable\n      - element is not enabled\n    - retrying click action\n    - waiting 20ms\n    2 × waiting for element to be visible, enabled and stable\n      - element is not enabled\n    - retrying click action\n      - waiting 100ms\n    28 × waiting for element to be visible, enabled and stable\n       - element is not enabled\n     - retrying click action\n       - waiting 500ms\n"
+  ],
+  "notes": [
+    "title=OpsxAPI · 接口工作台",
+    "selectCount=1",
+    "select0=自动/Web 代理/浏览器直连/桌面直连"
+  ]
+}