chore: 保存工作副本——客户端授权新契约(双端点/验签/令牌/周检)与桌面会话可靠性改进

test/utils/desktopResolution.test.ts

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+import { describe, expect, it } from 'vitest'
+import { desktopCanvasDisplaySize, resolutionFromPane } from '../../src/utils/desktopResolution'
+
+describe('desktopCanvasDisplaySize', () => {
+  it('lets RDP fill a taller pane instead of letterboxing 1280×800', () => {
+    expect(desktopCanvasDisplaySize('rdp', 1100, 980, 1280, 800)).toEqual({
+      width: 1100,
+      height: 980,
+    })
+  })
+
+  it('keeps VNC aspect ratio so the framebuffer is not stretched', () => {
+    expect(desktopCanvasDisplaySize('vnc', 1100, 980, 1280, 800)).toEqual({
+      width: 1100,
+      height: 687,
+    })
+  })
+})
+
+describe('resolutionFromPane', () => {
+  it('uses the pane when it is large enough for a desktop session', () => {
+    expect(resolutionFromPane(1420, 900, { width: 1280, height: 800 })).toEqual({
+      width: 1420,
+      height: 900,
+    })
+  })
+
+  it('falls back when the pane is still collapsing or hidden', () => {
+    expect(resolutionFromPane(0, 0, { width: 1280, height: 800 })).toEqual({
+      width: 1280,
+      height: 800,
+    })
+  })
+})