[csd113]

Summary

Chromium can leave a traced background tab uninitialized after a modified quote-link click even though the destination returned HTTP 200. Open the native new tab in the foreground with Control/Command+Shift-click, keeping the destination, original search page, normal navigation, tracing, and video assertions intact. Independent Control and Meta event checks ensure Shift cannot hide a regression in the application’s modifier passthrough guards.

Impact

Browser regression tests only. Public UI, admin UI, storage/schema, media, moderation, backup/restore, TLS/proxy, Tor, deployment, and application behavior are unchanged.

Validation

• cargo fmt --all --check — passed.
• cargo clippy --workspace --all-targets --all-features -- -D warnings -D clippy::all -D clippy::pedantic -D clippy::nursery -D clippy::cargo — passed.
• cargo test --workspace --all-features — passed, 2,509 cases including doctests.
• python3 -m unittest discover -s tools -p test_update_package.py — passed, seven cases.
• npx playwright test tests/e2e/public-reading-polish.spec.ts --workers=2 --grep 'search post numbers and quotes' --repeat-each=3 — passed, 21 cases across seven local browser profiles, including no-JavaScript profiles.
• npx playwright test tests/e2e/public-reading-polish.spec.ts --project=chromium --workers=2 --grep 'search post numbers and quotes' --repeat-each=20 --max-failures=3 — passed, 20 cases with a Linux Chromium engine in the official Playwright container connected to disposable local fixtures. This supplemental run does not replace the native GitHub browser suite.
• git diff --check — passed.

Checklist

• This change is narrowly scoped and preserves unrelated behavior.
• No credentials, private keys, databases, backups, logs, media, runtime data, or generated artifacts are included.
• Tests cover changed behavior and modifier interception.
• Formatting, Clippy, Rust tests, and focused Playwright checks passed.
• No user behavior, configuration, deployment, or operator expectations changed; documentation and changelog changes are unnecessary.
• No schema changes.
• Route names, IDs, fields, hooks, and no-JS fallbacks are preserved.
• No new security-sensitive application changes.

Related issue

Follow-up to #112, preparing stable v1.6.0 publication.