test(cockpit): verify camera flight on real timers not only injected frames

.scratch/cockpit-shell-panel-layout/verify/t52-camera-flight.mjs

@@ -76,3 +76,33 @@ viewer.destroy()
 clock = 999
 assert.equal(frames.length, 0)
 console.log('PASS 镜头定位为逐帧缓动飞行：受理不瞬移/半程插值/到期正对设备/拖拽接管取消/销毁停止')
+
+// ---- 生产默认路径（不注入 scheduleFrame/now，用真实计时器）----
+// 注入接缝只能证明「插值逻辑对」，还要证明**默认路径真的会跑**：用户看到的就是这条。
+{
+    const plan2 = planPipeEnhancement({ selected: { kind: 'pipe', code: 'P' }, visiblePipes: [
+        { code: 'P', industry: 'WATER_SUPPLY', diameter: 400, positions: [[110, 28], [110.001, 28]] },
+    ] })
+    Object.assign(plan2, planEnhancementDevices(plan2, [
+        { code: 'D', name: '测试流量计', industry: 'WATER_SUPPLY', pointCode: 'MP', longitude: 110.0005, latitude: 28, coordinate: { renderable: true } },
+    ]))
+    let sc2, cam2
+    const v2 = mountPipeEnhancement(host, plan2, {
+        rendererFactory: () => ({ domElement: canvas, setSize() {}, dispose() {}, render(s2, c2) { sc2 = s2; cam2 = c2 } }),
+        iconResolver: async (d) => ({ url: 'mock://' + d.code, width: 26.7, height: 33.5 }),
+        loadTexture: (url, onLoad) => { const t = new THREE.Texture(); t.image = { data: new Uint8Array([255, 255, 255, 255]), width: 1, height: 1 }; onLoad(t) },
+    })
+    sc2.updateMatrixWorld(true)
+    const body2 = sc2.getObjectByName('device:D').getObjectByName('device-body')
+    const before2 = cam2.position.clone()
+    assert.equal(v2.focusDevice('D'), true)
+    // 真实计时器推进：等待超过动画时长。
+    await new Promise((r) => setTimeout(r, 900))
+    const moved = cam2.position.distanceTo(before2)
+    assert.ok(moved > 1e-3, '生产默认路径（真实 rAF/timer）必须真的移动相机')
+    const dir = new THREE.Vector3(0, 0, -1).applyQuaternion(cam2.quaternion)
+    const toTarget = body2.getWorldPosition(new THREE.Vector3()).sub(cam2.position).normalize()
+    assert.ok(dir.dot(toTarget) > 0.99, '真实计时器下飞行结束也应正对设备')
+    v2.destroy()
+    console.log('PASS 生产默认路径（真实计时器）下镜头确实飞行并正对设备')
+}