fix(mobile): keep the PR review repository eyebrow on one line

[iscekic]

Changelog for users

• The pull-request header keeps the owner/repo label on a single line.
• A long repository slug shortens in the middle with an ellipsis instead of wrapping.
• The pull-request number stays directly beneath the label on the second line.
• The Share and Submit review controls stay fully visible and tappable.
• Headers that do not opt into the cap keep showing their full label text.

Changelog for maintainers

• ScreenHeader gains an optional eyebrowNumberOfLines prop; leaving it undefined keeps the previous behavior, so instructional eyebrows are never truncated.
• When the cap is set, the eyebrow ellipsizes in the middle because the repository name is the distinguishing tail of the path.
• The PR review screen opts its owner/repo eyebrow into a one-line cap.
• Tests cover the capped eyebrow, the uncapped default, the reserved placeholder line, and the screen passing the cap.
• Review the Eyebrow render first; the only behavior change is the opt-in cap.

E2E proof

e1 — kwf-fix-proof-cdf867e-1119/e1.png (capture not retained)

Owner request

## Follow-ups (not changed here) - not proved live: [e1] needs:seed (github-stub.sh start , fixture kilo-stub/discussion-mixed#1) — open that PR by URL and land on the PR review screen: the repository eyebrow KILO-STUB/DISCUSSION-MIXED sits on ONE line, the title '#1' directly beneath it, and Share + Submit review are not crowded; the screen renders without the finding's defect — reported not_applicable: the iOS bridge cannot run this scenario kind (needs:seed) - not proved live: [e2] happy regression — the standing PR review state (#6054, needs:seed the pr-review GitHub token) still renders with the eyebrow on one line above '#6054', the Overview/Files/Discussion tabs, and Share + Submit review in the header row — reported not_applicable: the iOS bridge cannot run this scenario kind (needs:seed) - not proved live: [e4] non-retryable unhappy (needs:seed — github-stub.sh start so the entry screen has a GitHub token and the stub answers 404): open a PR that cannot be resolved; the body shows 'Pull request unavailable' with the 'Install the Kilo GitHub App' CTA and no Retry, and the header keeps the eyebrow on one line with Share + Submit review rendered inert — reported not_applicable: the iOS bridge cannot run this scenario kind (needs:seed)

Open findings (not fixed here)

• .xml, evidence/e3-run.log","note":"ios: e3-hierarchy.xml shows the one-line eyebrow [42,70][214,84] clear of Share pull request [224,72][259,108] and Submit review [262,72][389,108], both enabled/visible; e3-run.log line 1 'SCENE e3 OK', and the taps opened the share sheet (e3-share.xml …[truncated]
• rc=1). --- shard 1 ---
  VERDICT {"verdict":"passed","scenarios":[{"name":"e2","result":"pass","evidence":"/Users/igor/.local/share/kwf/ios/runs/explorer-pr-open-by-url-the-uppercase-repository-slug-wra-afba1-7e56/evidence/e2-hierarchy.txt","note":"iOS, pr-open-by-url (docs: auto-sync cloud-mobile with merged PRs (through 2026-09-21) kilocode#14198): eyebro
• not proved live: e2-hierarchy.png is no longer on the host that took it, so no publish can carry it
• not proved live: e4-hierarchy.png is no longer on the host that took it, so no publish can carry it
• not proved live: e6-hierarchy.png is no longer on the host that took it, so no publish can carry it
• not proved live: pr-open-by-url.png is no longer on the host that took it, so no publish can carry it
• the '## E2E proof' section carries no log excerpt, so nothing shows the change was driven end to end

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (4 files)

• apps/mobile/src/components/screen-header.tsx
• apps/mobile/src/components/pr-review/pr-review-screen.tsx
• apps/mobile/src/components/screen-header.mounted.test.tsx
• apps/mobile/src/components/pr-review/pr-review-screen.test.tsx

Verified the opt-in eyebrowNumberOfLines cap: ScreenHeader forwards numberOfLines/ellipsizeMode through Eyebrow/Text, the uncapped default is preserved for every other caller, and the middle ellipsis matches the existing pattern in kv-row.tsx. No memory leaks, security, or logic regressions found in the changed lines.

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_{Reviewed by deepseek-v4.1-flash · Input: 0 · Output: 0 · Cached: 0}

_{Review guidance: REVIEW.md from base branch main}