feat: 实现 AIO 容器部署

apps/server/tests/pdf-engine.test.ts

@@ -8,6 +8,7 @@ import {
   PdfRenderTimeoutError,
   PlaywrightPdfGenerator,
   isAllowedPdfRequestUrl,
+  readPdfEngineRuntimeLimits,
   type PdfRenderPayload
 } from "../src/pdf-engine.js";
 
@@ -102,6 +103,41 @@ describe("PDF 并发控制", () => {
   });
 });
 
+describe("PDF 运行参数", () => {
+  it("读取容器环境变量", () => {
+    expect(
+      readPdfEngineRuntimeLimits({
+        PDF_CONCURRENCY: "1",
+        PDF_MAX_QUEUE: "4",
+        PDF_TIMEOUT_MS: "120000"
+      })
+    ).toEqual({
+      concurrency: 1,
+      maxQueue: 4,
+      timeoutMs: 120_000
+    });
+  });
+
+  it("缺少环境变量时使用默认值", () => {
+    expect(readPdfEngineRuntimeLimits({})).toEqual({
+      concurrency: 2,
+      maxQueue: 8,
+      timeoutMs: 60_000
+    });
+  });
+
+  it.each([
+    ["PDF_CONCURRENCY", "0"],
+    ["PDF_MAX_QUEUE", "-1"],
+    ["PDF_TIMEOUT_MS", "999"],
+    ["PDF_CONCURRENCY", "1.5"]
+  ])("拒绝无效的 %s", (name, value) => {
+    expect(() =>
+      readPdfEngineRuntimeLimits({ [name]: value })
+    ).toThrow(name);
+  });
+});
+
 describe("PDF 网络策略", () => {
   it("只允许渲染同源和内嵌资源", () => {
     const origin = "http://127.0.0.1:5173";