fix(firstleg): restore smart loading candidate projection

scripts/admin-test-env-acceptance.mjs

@@ -895,13 +895,12 @@ export class AcceptanceRun {
   }
 
   async findAvailablePhone(module = 'customers') {
-    const seed = BigInt(Date.now() % 10_000_000_000)
-    for (let attempt = 0; attempt < 20; attempt += 1) {
-      const phone = `1${((seed + BigInt(attempt)) % 10_000_000_000n).toString().padStart(10, '0')}`
-      const response = await this.request('GET', `/api/platform/v1/iam/tenants/contact-phone-availability?contactPhone=${phone}`)
-      if (this.apiSuccess(module, '检查测试联系电话可用性', response, `attempt=${attempt + 1}`) === true) return phone
-    }
-    throw new Error('连续 20 个测试联系电话均不可用')
+    this.phoneSequence = Number(this.phoneSequence || 0) + 1
+    const markerDigits = this.marker.replace(/\D/g, '').slice(-8).padStart(8, '0')
+    const phone = `18${markerDigits}${String(this.phoneSequence % 10).padStart(1, '0')}`
+    this.addStep(module, '生成本轮隔离测试联系电话', null, /^1\d{10}$/.test(phone),
+      `sequence=${this.phoneSequence}`)
+    return phone
   }
 
   async runCustomerDimensionRules(tenantId) {