test: align Library navigation and pause the search clock

CHANGELOG.md

@@ -25,6 +25,8 @@ All notable changes to Allthing are recorded here. The format follows [Keep a Ch
 
 ### Development
 
+- Pause the search fixture's clock before navigation so an old real-time timer cannot move it backward; preserve the exact timer-cancellation and 250 ms debounce checks.
+- Keep the live front-page check's exact navigation contract in step with the Home and Library links; first-paint, layout and interaction limits remain unchanged.
 - Library Back checks compare with the card position at the actual click, after browser actionability scrolling, while retaining the two-pixel restoration limit and exact cached-page checks.
 
 - Move build orchestration, Brotli compression, repository validation, asset-credit checks, deployment waiting, isolated database-module checks, audit handling and browser fixture orchestration into native Rust `xtask` commands. Retain official Playwright tests and independent cryptography, SQL and SDK codec checks.

e2e/allthing.spec.ts

@@ -146,10 +146,10 @@ test.describe("front page", () => {
     await expect(page.locator(".cast-card .origin").first()).toContainText("via ");
     await expect(page.locator(".score")).toHaveCount(0);
 
-    // 0.3: no backend badges, intro, ranking or keyboard boxes; a Home button,
+    // No backend badges, intro, ranking or keyboard boxes; Home and Library links,
     // and a one-line footer with the version.
     await expect(page.locator(".backend")).toHaveCount(0);
-    await expect(page.locator(".main-nav a")).toHaveText(["Home"]);
+    await expect(page.locator(".main-nav a")).toHaveText(["Home", "Library"]);
     // No sidebar: the feed is one centered column.
     await expect(page.locator(".side")).toHaveCount(0);
     const feed = await page.locator(".columns .content").boundingBox();

e2e/search-typeahead.fixture.spec.ts

@@ -27,7 +27,11 @@ async function serve(page: Page) {
 
 /** Playwright's 1e12 timer IDs must survive the browser's WebIDL i32 ABI. */
 async function browserClock(page: Page) {
-  await page.clock.install({ time: Date.now() });
+  const at = Date.now();
+  await page.clock.install({ time: at });
+  // Pause before navigation: an in-flight real-time clock callback from the
+  // mounted app can otherwise finish after pauseAt and move ticks backward.
+  await page.clock.pauseAt(at + 1000);
   await page.addInitScript(() => {
     // Native browser handles fit i32. Without aliases, web-sys truncates the
     // clock's 1e12 handles and cancellation silently leaves old timers live.
@@ -70,7 +74,6 @@ test("suggestions appear as you type: people, channels and posts", async ({ page
   const box = page.getByRole("combobox", { name: "Search casts, people and channels", exact: true });
   // Keep real keyboard/input events, but control the gaps: a busy host can
   // otherwise turn a requested 40 ms gap into a genuine 250 ms pause.
-  await page.clock.pauseAt(await page.evaluate(() => Date.now() + 1000));
   const handles = await page.evaluate(() => {
     (window as any).__clockProbe = [];
     const note = (...args: unknown[]) => (window as any).__clockProbe.push(args);