[0.42-r2 L3] local playwright retries mask flakes — set retries to 0 outside CI

[SisyphusZheng]

Severity: low · Category: test hygiene

Evidence. __fixtures__/request-time/e2e/playwright.config.ts: retries: process.env.CI ? 2 : 1 — local retries can mask flakes (a #548-adjacent flake was observed once during alpha.5).

Fix. retries: process.env.CI ? 2 : 0.

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Filed from the 0.42 round-2 review (docs/audit/2026-07-28-alpha5-round2-review.md). Target line: 0.42.0-alpha.6.

[SisyphusZheng]

Fixed and shipped in v0.42.0-alpha.6 (npm dist-tags latest/alpha at 0.42.0-alpha.6, tag ccc9407). The fix and its regression test landed via PR #594 (fixture suite 49 tests × 3 engines = 147 green, including the new round-2 specs; unit + parity suites green).