fix: stderr tokens are no longer injected when in development mode

[cacieprins]

• Closes webpack info logs less readable with CYPRESS.STDERR annotations #32569

Additional details

Most notably in CT, when running Cypress in development mode, the STDERR marking tokens were appearing in the final cli output. This:

• Ensures that we are not adding tokens when we shouldn't (e.g., debugging electron, internal development mode for Cypress)
• Ensures that we are not stripping tokens when we aren't adding them
• Refactors to make this distinction easier to determine

Steps to test

Check out and build; run cypress:run --component --project ./packages/driver, ensure no tokens exist in the output

How has the user experience changed?

PR Tasks

• Have tests been added/updated?
• [NA] Has a PR for user-facing changes been opened in cypress-documentation?
• [NA] Have API changes been updated in the type definitions?

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Note

Disable stderr tag injection when ELECTRON_ENABLE_LOGGING=1 or in Cypress development mode, with refactors and tests updated accordingly.

• stderr filtering:
  • Tag control: Introduce tagsDisabled() to centralize when tags are suppressed (ELECTRON_ENABLE_LOGGING=1 or CYPRESS_INTERNAL_ENV=development).
  • Filter (packages/stderr-filtering/lib/Filter.ts): remove disableTags arg; conditionally pipe through FilterTaggedContent only when tags are enabled.
  • TagStream (packages/stderr-filtering/lib/TagStream.ts): use tagsDisabled() to skip adding START_TAG/END_TAG; improve Buffer handling and move verbose logs to cypress-verbose:*.
  • logError (packages/stderr-filtering/lib/logError.ts): use tagsDisabled() to decide tagging; minor comment fix.
  • New: packages/stderr-filtering/lib/tagsDisabled.ts.
  • Tests: Update specs to stub env vars and validate tag suppression/enabling paths; adjust expectations for Buffer outputs and pipeline.
• Docs:
  • Changelog: note reduced verbose bracketing of stderr messages in dev/ELECTRON logging.

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[cypress]

cypress    Run #66387

Run Properties:   Failed #66387  •  fdf7608cd9: Merge branch 'develop' into fix/stderr-tokens-dev-mode

Project	cypress
Branch Review	fix/stderr-tokens-dev-mode
Run status	Failed #66387
Run duration	20m 16s
Commit	fdf7608cd9: Merge branch 'develop' into fix/stderr-tokens-dev-mode
Committer	Cacie Prins
View all properties for this run ↗︎

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Test results
Failures	2
Flaky	12
Pending	1102
Skipped	4
Passing	26729
View all changes introduced in this branch ↗︎

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Warning

Partial Report: The results for the Application Quality reports may be incomplete.

UI Coverage  45.27%
Untested elements	186
Tested elements	158

Accessibility  97.97%
Failed rules	4 critical   8 serious   2 moderate   2 minor
Failed elements	101

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Tests for review

  commands/files.cy.js • 1 failed test • 5x-driver-firefox

View Output

Test		Artifacts
src/cy/commands/files > #readFile > retries assertions until they pass		</td> </tr></table>   studio/studio.cy.ts • 1 failed test • app-e2e View Output Test Artifacts Cypress Studio > updates an existing test with assertions Test Replay Screenshots   commands/files.cy.js • 1 flaky test • 5x-driver-electron View Output Test Artifacts ... > has implicit existence assertion and throws a specific error when file does not exist Test Replay   issues/28527.cy.ts • 1 flaky test • 5x-driver-electron View Output Test Artifacts issue 28527 > fails and then retries and verifies about:blank is not displayed Test Replay Screenshots   e2e/origin/config_env.cy.ts • 1 flaky test • 5x-driver-inject-document-domain-chrome:beta View Output Test Artifacts cy.origin- Cypress.config() > serializable > overwrites different values in secondary if one exists in the primary Test Replay   e2e/origin/config_env.cy.ts • 1 flaky test • 5x-driver-chrome View Output Test Artifacts cy.origin- Cypress.config() > serializable > overwrites different values in secondary if one exists in the primary Test Replay   issues/28527.cy.ts • 1 flaky test • 5x-driver-chrome View Output Test Artifacts issue 28527 > fails and then retries and verifies about:blank is not displayed Test Replay Screenshots The first 5 flaky specs are shown, see all 12 specs in Cypress Cloud.