chore(trace): move trace types into isomorphic/trace/versions

[Dmitry Gozman (dgozman)]

Summary

• Move packages/trace/src/trace.ts to packages/isomorphic/trace/versions/traceV9.ts, inlining snapshot.ts; move har.ts next to it and inline it into traceV8.ts.
• Add packages/isomorphic/trace/trace.ts that re-exports the latest version, and use it across the codebase. packages/trace and the @trace alias are gone.
• Fold _normalizeResourceReferences() into _modernize_8_to_9(), since trace-relative paths were introduced in v9.
• Rename VideoTraceEvent.timestampOrigin to timestamp and add pageId; add pageId and timestamp to ScreenshotTraceEvent and AriaSnapshotTraceEvent.

[github-actions]

Test results for "tests 1"

5 flaky

⚠️ [chromium-library] › library/video.spec.ts:664 › screencast › should capture full viewport `@chromium-ubuntu-22.04-arm-node20`
⚠️ [chromium-library] › library/video.spec.ts:736 › screencast › should work with video+trace `@chromium-ubuntu-22.04-arm-node20`
⚠️ [chromium-library] › library/popup.spec.ts:260 › should not throw when click closes popup `@chromium-ubuntu-22.04-node20`
⚠️ [firefox-page] › page/page-event-request.spec.ts:181 › should return response body when Cross-Origin-Opener-Policy is set `@firefox-ubuntu-22.04-node20`
⚠️ [playwright-test] › ui-mode-test-attachments.spec.ts:61 › should contain binary attachment `@windows-latest-node22`

51248 passed, 1240 skipped

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Merge workflow run.

[github-actions]

Test results for "MCP"

4 failed
❌ [chromium] › mcp/clipboard.spec.ts:19 › clipboard write without permission dialog @mcp-macos-latest-chromium
❌ [chromium] › mcp/clipboard.spec.ts:19 › clipboard write without permission dialog @mcp-windows-latest-chromium
❌ [chromium] › mcp/clipboard.spec.ts:19 › clipboard write without permission dialog @mcp-ubuntu-latest-chromium
❌ [firefox] › mcp/annotate.spec.ts:446 › should switch screencast to -s session on show --annotate @mcp-windows-latest-firefox

8255 passed, 1361 skipped

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Merge workflow run.

[github-actions]

🟢 CI is clear — both failures are pre-existing flakes

Hi, I'm the Playwright bot and I took a first look at the CI failures here.

This PR moves trace types around (packages/trace → packages/isomorphic/trace) and renames some trace-event fields. The two red MCP tests don't touch that code path, and both have long flake histories on SHAs this PR can't be responsible for — including the PR's own base commit. Nothing here looks caused by your change.

Details

Overall: the "tests 1" report is green (5 within-run flakes, no failures). The "MCP" report has 4 reds, which collapse into 2 stories once grouped across OS/browser. Both are established, bimodal flakes.

Pre-existing flake / infra

• [chromium] › mcp/clipboard.spec.ts:19 › clipboard write without permission dialog (fails together on mcp-{ubuntu,windows,macos}-latest-chromium) — pre-existing flake. Across the test-results DB it failed 10 of 2431 runs, and it fails the exact same way, on all three OSes at once, on the PR's own base sha 9a450a2f, on main pushes, and on unrelated PRs feat(firefox): roll to r1541 #42441, chore(trace): remove snapshot pointers from action events #42431, feat(chromium): roll to r1243 #42434, chore(chromium): switch linux arm64 to cft builds #42440, chore(recorder): move fill coalescing back to collapseActions #42442, feat(chromium): roll to r1242 #42356. This PR doesn't touch clipboard or MCP permission handling. Recent mcp-ubuntu-latest-chromium history for this test:

  🟩🟩🟩🟩🟥🟩🟩🟩🟩🟩🟩🟥🟥🟥🟥🟥🟥🟥🟩🟥

  (The red cluster in the last few days is on main and other PRs too, so if anything it's a recent main-branch flake — not this PR.)

• [firefox] › mcp/annotate.spec.ts:446 › should switch screencast to -s session on show --annotate (mcp-windows-latest-firefox) — pre-existing flake. It failed 41 of 3540 runs, overwhelmingly on mcp-windows-latest-firefox, spread across 40+ unrelated SHAs and main pushes (e.g. PRs fix(trace): keep client paths out of remote launch options #42436, fix(test): unflake recorder aria snapshot highlight on Firefox/macOS #42415, test(recorder): skip flaky aria snapshot highlight test on Firefox #42391, fix(har): do not report zero sizes for bodies that were never read #42371, feat(test-runner): add --merge-strategy flag to merge-reports #42287, and many more). This PR's failure is on that same bot with the same signature. Recent history for this test on that bot:

  🟩🟥🟩🟩🟩🟩🟥🟩🟩🟩🟥🟩🟥🟩🟩🟩🟩🟩🟩🟥

Each square is one run attempt (oldest → newest); 🟩 passed, 🟧 rescued on retry, 🟥 failed.

_{Triaged by the Playwright bot - agent run}