Revert the timeline optimistic and pagination rework (#2596)

* Add npm release track invariant and beta dist-tag procedure

* Revert "Keep older chat history and image previews stable (#2490)"

The timeline optimistic/pagination rework needs more work than main releases can wait for. Reverted together with #2484; both are reapplied on integration/timeline-optimistic-rework.

* Revert "Stop completed turns from appearing stuck (#2484)"

See the #2490 revert. #2490 built on this submission-authority change, so the two revert and reapply as a pair.
This commit is contained in:
Mohamed Boudra
2026-07-29 13:35:43 +02:00
committed by GitHub
parent ab24070075
commit acb8506d1f
81 changed files with 1721 additions and 7893 deletions
@@ -1,197 +1,46 @@
import { expect, test } from "./fixtures";
import { test } from "./fixtures";
import {
expectSameOlderHistoryLoadingOperation,
expectTimelineAtHistoryStart,
expectLoadedTimelineDoesNotScroll,
expectTimelinePromptNotMounted,
expectTimelinePromptPositionPreserved,
expectTimelinePromptVisible,
holdBootstrapTimelinePage,
holdDaemonHydration,
holdOlderHistoryPages,
holdNextOlderTimelinePage,
makeLoadedTimelineFitViewport,
openAgentTimeline,
rememberOlderHistoryLoadingOperation,
rememberTimelineViewport,
rememberTimelinePromptPosition,
reloadAgentTimelineFromPersistedReplica,
scrollTimelineUntilOlderHistoryIsReachable,
scrollTimelineToNewestLoadedEdge,
seedLongMockAgentTimeline,
sendLiveTurnBeforeHydration,
expectTimelineViewportAnchoredAfterPrepend,
userScrollsTimelineToHistoryStart,
} from "./helpers/timeline-pagination";
test.describe("Agent timeline pagination", () => {
test("loads one page each time the user returns to history start", async ({ page }) => {
test("loads older history when the user scrolls to the top of a long agent timeline", async ({
page,
}) => {
test.setTimeout(120_000);
const agent = await seedLongMockAgentTimeline({ turns: 80 });
try {
const history = await holdOlderHistoryPages(page, agent);
await openAgentTimeline(page, agent);
await expectTimelinePromptVisible(page, agent.newestPrompt);
await expectTimelinePromptNotMounted(page, agent.oldestPrompt);
await userScrollsTimelineToHistoryStart(page);
await history.expectRequestedPages(1);
history.releasePage(1);
await history.expectSettledWithRequestedPages(1);
await scrollTimelineUntilOlderHistoryIsReachable(page);
await userScrollsTimelineToHistoryStart(page);
await history.expectRequestedPages(2);
await expectTimelinePromptVisible(page, agent.oldestPrompt);
} finally {
await agent.cleanup();
}
});
test("keeps the visible timeline position anchored while prepending a page", async ({ page }) => {
test("loads older history when the initial page does not fill the viewport", async ({ page }) => {
test.setTimeout(120_000);
const agent = await seedLongMockAgentTimeline({ turns: 80 });
try {
const history = await holdOlderHistoryPages(page, agent);
await openAgentTimeline(page, agent);
await userScrollsTimelineToHistoryStart(page);
await history.expectRequestedPages(1);
const viewport = await rememberTimelineViewport(page);
history.releasePage(1);
await expectTimelineViewportAnchoredAfterPrepend(page, viewport);
} finally {
await agent.cleanup();
}
});
test("keeps visible history anchored when live output grows during a prepend", async ({
page,
}) => {
test.setTimeout(120_000);
const agent = await seedLongMockAgentTimeline({ turns: 80 });
try {
const history = await holdOlderHistoryPages(page, agent);
await openAgentTimeline(page, agent);
await userScrollsTimelineToHistoryStart(page);
await history.expectRequestedPages(1);
const position = await rememberTimelinePromptPosition(page, agent.initialTailOldestPrompt);
await agent.client.sendAgentMessage(
agent.agentId,
"timeline live during held older page: emit 20 coalesced agent stream updates",
);
await agent.client.waitForFinish(agent.agentId, 15_000);
history.releasePage(1);
await expectTimelinePromptPositionPreserved(page, position);
} finally {
await agent.cleanup();
}
});
test("finishes loading an older page while live output continues", async ({ page }) => {
test.setTimeout(120_000);
const agent = await seedLongMockAgentTimeline({ turns: 40 });
try {
const history = await holdOlderHistoryPages(page, agent);
await openAgentTimeline(page, agent);
await userScrollsTimelineToHistoryStart(page);
await history.expectRequestedPages(1);
await agent.client.sendAgentMessage(agent.agentId, "keep streaming while history settles");
await agent.client.waitForAgentUpsert(
agent.agentId,
(snapshot) => snapshot.status === "running",
);
history.releasePage(1);
await expect(page.getByTestId("load-older-history-spinner")).toBeHidden({ timeout: 5_000 });
const running = await agent.client.fetchAgents({ scope: "active" });
expect(running.entries.find((entry) => entry.agent.id === agent.agentId)?.agent.status).toBe(
"running",
);
} finally {
await agent.cleanup();
}
});
test("keeps the visible timeline anchored when the final page finishes", async ({ page }) => {
test.setTimeout(120_000);
const agent = await seedLongMockAgentTimeline({ turns: 40 });
try {
const history = await holdOlderHistoryPages(page, agent);
await openAgentTimeline(page, agent);
await userScrollsTimelineToHistoryStart(page);
await history.expectRequestedPages(1);
const position = await rememberTimelinePromptPosition(page, agent.initialTailOldestPrompt);
history.releasePage(1);
await expectTimelinePromptPositionPreserved(page, position);
await history.expectSettledWithRequestedPages(1);
} finally {
await agent.cleanup();
}
});
test("continues one loading operation while older pages still leave history start exposed", async ({
page,
}) => {
test.setTimeout(120_000);
const agent = await seedLongMockAgentTimeline({ turns: 80 });
const agent = await seedLongMockAgentTimeline({ turns: 30 });
try {
await makeLoadedTimelineFitViewport(page);
const history = await holdOlderHistoryPages(page, agent);
const olderPage = await holdNextOlderTimelinePage(page, agent);
await openAgentTimeline(page, agent);
await history.expectRequestedPages(1);
const loading = await rememberOlderHistoryLoadingOperation(page);
history.releasePage(1);
await history.expectRequestedPages(2);
await expectTimelineAtHistoryStart(page);
await expectSameOlderHistoryLoadingOperation(page, loading);
} finally {
await agent.cleanup();
}
});
test("keeps complete loaded history reachable after reload", async ({ page }) => {
test.setTimeout(120_000);
const agent = await seedLongMockAgentTimeline({ turns: 80 });
try {
await openAgentTimeline(page, agent);
await scrollTimelineUntilOlderHistoryIsReachable(page, agent.oldestPrompt);
await expectTimelinePromptVisible(page, agent.newestPrompt);
await expectLoadedTimelineDoesNotScroll(page);
await olderPage.expectLoading();
olderPage.release();
await expectTimelinePromptVisible(page, agent.oldestPrompt);
const hydration = await holdDaemonHydration(page);
await reloadAgentTimelineFromPersistedReplica(page, agent);
hydration.release();
await scrollTimelineUntilOlderHistoryIsReachable(page, agent.oldestPrompt);
await expectTimelinePromptVisible(page, agent.oldestPrompt);
} finally {
await agent.cleanup();
}
});
test("preserves a live row received before replica hydration", async ({ page }) => {
test.setTimeout(120_000);
const agent = await seedLongMockAgentTimeline({ turns: 80 });
try {
await openAgentTimeline(page, agent);
await scrollTimelineUntilOlderHistoryIsReachable(page, agent.oldestPrompt);
const hydration = await holdBootstrapTimelinePage(page, agent);
await reloadAgentTimelineFromPersistedReplica(page, agent);
await hydration.waitForDelayedResponse();
const livePrompt = await sendLiveTurnBeforeHydration(agent);
await expectTimelinePromptVisible(page, livePrompt);
hydration.release();
await hydration.waitForDelayedCatchUp();
await expectTimelinePromptVisible(page, livePrompt);
hydration.releaseCatchUp();
await scrollTimelineUntilOlderHistoryIsReachable(page, agent.oldestPrompt);
await expectTimelinePromptVisible(page, agent.oldestPrompt);
await scrollTimelineToNewestLoadedEdge(page);
await expectTimelinePromptVisible(page, livePrompt);
} finally {
await agent.cleanup();
}