feat(guardian): 强化Gateway守护与Windows启停安全

tests/gateway-guardian-policy.test.js

@@ -0,0 +1,69 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+
+import {
+  MAX_AUTO_RESTART,
+  RESTART_COOLDOWN,
+  STABLE_RUNNING_MS,
+  evaluateAutoRestartAttempt,
+  shouldResetAutoRestartCount,
+} from '../src/lib/gateway-guardian-policy.js'
+
+test('短暂恢复运行不应立即清零自动重启计数', () => {
+  assert.equal(
+    shouldResetAutoRestartCount({
+      autoRestartCount: 2,
+      runningSince: 10_000,
+      now: 10_000 + STABLE_RUNNING_MS - 1,
+    }),
+    false,
+  )
+})
+
+test('稳定运行超过阈值后才允许清零自动重启计数', () => {
+  assert.equal(
+    shouldResetAutoRestartCount({
+      autoRestartCount: 2,
+      runningSince: 10_000,
+      now: 10_000 + STABLE_RUNNING_MS,
+    }),
+    true,
+  )
+})
+
+test('达到最大自动重启次数后必须停止守护', () => {
+  assert.deepEqual(
+    evaluateAutoRestartAttempt({
+      now: 90_000,
+      lastRestartTime: 0,
+      autoRestartCount: MAX_AUTO_RESTART,
+    }),
+    { action: 'give_up' },
+  )
+})
+
+test('冷却时间内不应重复自动重启', () => {
+  assert.deepEqual(
+    evaluateAutoRestartAttempt({
+      now: RESTART_COOLDOWN - 1,
+      lastRestartTime: 0,
+      autoRestartCount: 1,
+    }),
+    { action: 'cooldown' },
+  )
+})
+
+test('满足条件时应增加自动重启计数并记录重启时间', () => {
+  assert.deepEqual(
+    evaluateAutoRestartAttempt({
+      now: 120_000,
+      lastRestartTime: 0,
+      autoRestartCount: 1,
+    }),
+    {
+      action: 'restart',
+      autoRestartCount: 2,
+      lastRestartTime: 120_000,
+    },
+  )
+})