fix(deploy): pin distinct image tags per compose (booklib/{api,web}:{dev,prod}); same project name shared default tags so dev up without --build ran the prod image

frontend/test/progress.test.ts

@@ -0,0 +1,42 @@
+import { afterEach, beforeEach, expect, it, vi } from "vitest";
+import { createProgressSaver } from "../src/lib/progress";
+
+type Sent = [Record<string, unknown>, number, boolean];
+
+beforeEach(() => vi.useFakeTimers());
+afterEach(() => vi.useRealTimers());
+
+it("leading 立即发;间隔内多次 report 合并成一次 trailing", () => {
+  const sent: Sent[] = [];
+  const s = createProgressSaver((l, p, ka) => {
+    sent.push([l, p, ka]);
+    return Promise.resolve();
+  });
+  s.report({ page: 1 }, 0.1);
+  expect(sent.length).toBe(1);
+  s.report({ page: 2 }, 0.2);
+  s.report({ page: 3 }, 0.3);
+  expect(sent.length).toBe(1);
+  vi.advanceTimersByTime(4999);
+  expect(sent.length).toBe(1);
+  vi.advanceTimersByTime(1);
+  expect(sent.length).toBe(2);
+  expect(sent[1]).toEqual([{ page: 3 }, 0.3, false]);
+});
+
+it("flush 立刻尾随发送且 keepalive=true;重复值去重;清空挂起", () => {
+  const sent: Sent[] = [];
+  const s = createProgressSaver((l, p, ka) => {
+    sent.push([l, p, ka]);
+    return Promise.resolve();
+  });
+  s.report({ page: 0 }, 0);
+  s.report({ page: 5 }, 0.5);
+  s.flush();
+  expect(sent.length).toBe(2);
+  expect(sent[1]).toEqual([{ page: 5 }, 0.5, true]);
+  s.flush();
+  expect(sent.length).toBe(2);
+  vi.advanceTimersByTime(10_000);
+  expect(sent.length).toBe(2); // 挂起已被 flush 消费,定时器不再补发
+});