Stabilize generated E2E identity width

[Chris0Jeky]

Purpose

Take the first independent visual-stability residual from #2764. The shared E2E auth helper emitted a random username segment between one and six digits, so otherwise identical account text changed width between runs and consumed screenshot-diff tolerance.

The implementation zero-pads that random segment to six digits. Timestamp entropy and the existing scope prefix remain unchanged, so worker/test isolation is preserved.

Red → green evidence

The original test harness commit 638bf177effce0395d05634e2e99aed5d527cd35 imported an E2E-only module into the browser tsconfig and failed typechecking on process; that was a fixture defect and is not counted as the behavior red.

RED — exact corrected test-only head. Commit 485bbf46d532773d92fe1fa3b9140d020041cebb reads the helper as raw source, keeping production untouched. CI run 34913155677 passed frontend lint, typecheck, build, and PWA validation, then both frontend operating-system jobs (104205621086, 104205621146) failed the focused assertion. The archived JUnit receipt identifies only e2eAuthIdentity.spec.ts: the source still contained Math.floor(Math.random() * 1_000_000) and lacked the required .padStart(6, '0') contract.

GREEN — exact hosted head. Commit 6ec09d5e7e5412f23d4f3cec2e9b17e45ec8cf6d changes the shared helper by one expression.

• Smart CI Self-Test run 34914006798: success.
• CI Extended run 34914006984: success.
• Main CI run 34914006968: success.
• The exact-head matrix covers frontend tests on Ubuntu and Windows, E2E smoke, API integration on both operating systems, backend and CLI tests, container/backup verification, migrations, security, architecture, docs governance, production/PWA build, and source-launcher checks.

Scope

• Shared generated E2E username/email geometry only.
• No production bundle, authentication endpoint, user schema, password, timestamp, API origin, session attachment, Playwright worker, or baseline threshold changes.
• This addresses [Testing][Visual] Baseline-suite residuals: identity width, no toast coverage, silent bootstrap seams, label-gated drift #2764 item 1 only; toast coverage, bootstrap diagnostics/verification, label-gated drift, locale/timezone hardening, and optional .gitattributes work remain open.

Refs #2764

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-15T01:26:07.262081Z	6ec09d5	Draft marked ready

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