feat(queue): 增加非文本模型分布式准入队列

使用 PostgreSQL 统一同步与异步非文本任务的并发准入、持久化等待和 Worker 容量分配，并将生产 API 与独立 Worker 角色拆分。

补充策略管理、共享契约、OpenAPI、Kubernetes 双节点 Worker 清单及跨节点验收脚本；未默认启用任何生产 queue_size 策略。

已在原基线完成 Go、前端、迁移、Shell、Kustomize 与长任务容量验收；合入最新主干后将重新执行发布门禁。

apps/web/src/pages/admin/platform-form.test.ts

@@ -1,6 +1,6 @@
 import type { BaseModelCatalogItem } from '@easyai-ai-gateway/contracts';
 import { describe, expect, it } from 'vitest';
-import { createEmptyPlatformForm, platformModelPayloads } from './platform-form';
+import { createEmptyPlatformForm, platformModelPayloads, platformPayload, validatePlatformForm } from './platform-form';
 
 const baseModel = {
   id: 'model-1',
@@ -53,4 +53,78 @@ describe('platform model rate limit payload', () => {
     expect(payload.rateLimitPolicyMode).toBe('override');
     expect(payload.rateLimitPolicy).toEqual({ rules: [] });
   });
+
+  it('serializes queue length and defaults maximum wait to 600 seconds', () => {
+    const form = {
+      ...selectedForm(),
+      name: 'Queue platform',
+      baseUrl: 'https://example.test',
+      testMode: true,
+      queueSize: '12',
+      queueMaxWaitSeconds: '',
+      modelOverrideRateLimit: true,
+      modelRateLimitOverrideTouched: true,
+      modelQueueSize: '4',
+      modelQueueMaxWaitSeconds: '90',
+    };
+
+    expect(platformPayload(form).rateLimitPolicy).toEqual({
+      rules: [{ metric: 'queue_size', limit: 12, maxWaitSeconds: 600 }],
+    });
+    expect(platformModelPayloads([baseModel], form)[0].rateLimitPolicy).toEqual({
+      rules: [{ metric: 'queue_size', limit: 4, maxWaitSeconds: 90 }],
+    });
+  });
+
+  it('rejects queue values outside the shared policy bounds', () => {
+    const form = {
+      ...selectedForm(),
+      name: 'Queue platform',
+      baseUrl: 'https://example.test',
+      testMode: true,
+      queueSize: '10001',
+    };
+    expect(validatePlatformForm(form, 1)).toContain('1–10000');
+    expect(validatePlatformForm({ ...form, queueSize: '2', queueMaxWaitSeconds: '3601' }, 1)).toContain('1–3600');
+  });
+
+  it('preserves unknown policy fields and non-editable rules', () => {
+    const form = {
+      ...selectedForm(),
+      name: 'Compatible platform',
+      baseUrl: 'https://example.test',
+      testMode: true,
+      concurrencyLimit: '3',
+      queueSize: '6',
+      rateLimitPolicyExtra: { extensionMode: 'legacy' },
+      rateLimitRuleExtras: {
+        concurrent: { consume: 'lease', vendorHint: 'keep' },
+        queue_size: { vendorQueueMode: 'shared' },
+      },
+      rateLimitPreservedRules: [
+        { metric: 'tpm_input', limit: 1234, vendorWindow: true },
+      ],
+    };
+
+    expect(platformPayload(form).rateLimitPolicy).toEqual({
+      extensionMode: 'legacy',
+      rules: [
+        { metric: 'tpm_input', limit: 1234, vendorWindow: true },
+        {
+          consume: 'lease',
+          vendorHint: 'keep',
+          metric: 'concurrent',
+          limit: 3,
+          windowSeconds: 60,
+          leaseTtlSeconds: 120,
+        },
+        {
+          vendorQueueMode: 'shared',
+          metric: 'queue_size',
+          limit: 6,
+          maxWaitSeconds: 600,
+        },
+      ],
+    });
+  });
 });