Click a workspace tab by a test id, not by its localized label (BL-16799)

[hatton]

TopBar.tsx rendered each tab as an with a localized label and no
id, class or data-testid, so automation had to match the English text. Two
costs, both already paid. src/BloomE2E/helpers/workspace.ts mapped tab ids to
"Collections", "Edit" and "Publish", so the suite silently only worked in an
English UI, which rules out automating the UI-language cases. And the
component-tester's bloomExeCdp.ts drove "#main-tabs button", a selector that
exists nowhere in the source, so bloom-exe-tabs.uitest.ts cannot have worked
for some time: it needs a Bloom the developer already has running, and nothing
ran it.

Each tab now carries data-testid="workspace-tab-", built from Bloom's own
API name for the tab, and the tab strip carries data-testid="workspace-tabs".
So switchTab and clickWorkspaceTab both take a tab id and need no map, and
neither reads a label.

Retires the AUTOMATION-DEBT.md entry "The top bar has no stable test ids, so
tests match on localized text". Its "seen again" note stays: the Edit tab's
page thumbnail menu still has no test ids, and that is not fixed here.

This is one of eleven stacked pull requests (BL-16799)

Each one pays down one entry of src/BloomE2E/AUTOMATION-DEBT.md, and each branches off the one before it. Base: BL-16799-shell-document. Review only this pull request's own commit; the ones below it are reviewed in their own pull requests. The first six change test and tooling code only; the last five also change product code.

1. BL-16799-automation-scripts — Make the bloom-automation scripts safe to ask for help
2. BL-16799-vr-collect-failures — Report every failed image comparison in a visual-regression case, not the first
3. BL-16799-component-tests-in-ci — Run the component-tester Playwright suites nightly
4. BL-16799-vite-port — Let an e2e run test the working tree's front end
5. BL-16799-type-in-one-call — Type into a text box in one call, not one key press per character
6. BL-16799-page-screenshot — Capture a whole book page from a test
7. BL-16799-toolbox-registration — Register the toolbox tools from one list both callers share
8. BL-16799-shell-document — Stop a test attaching to a shell document Bloom does not drive
9. BL-16799-tab-test-ids — Click a workspace tab by a test id, not by its localized label
10. BL-16799-page-change — Refuse a page change the Edit tab cannot do, and wait before asking
11. BL-16799-collection-languages — Set a collection's languages through an e2e hook, not by writing XML

Replaces #8276, which did all of this in one pull request.

Verification of the whole stack, at its tip: the C# suite passes (3338 passed, 13 skipped), the front-end vitest suite passes (781 passed, 5 skipped), and the src/BloomE2E suite passes against a Vite dev server on the working tree (36 passed, 0 skipped, 8.2 minutes). Each pull request also has its own type check and lint.

🤖 Generated with Claude Code

Devin review

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This change is 

[hatton]

[Claude Opus 5 from Hatton's machine during devin-review]

Consulted Devin on 2026-09-03 22:45 UTC up to commit 1c917af290c286fcb15d5c77438b64f9033d7489.