kwf-fix: proof-8616e7e-2

kwf-fix-pr: #6535

Prove the behaviour of PR #6535 with a live end-to-end run, and make no code change.
The pull request description carries no evidence: the '## E2E proof' section carries no log excerpt, so nothing shows the change was driven end to end.

Run the pull request's own scenarios on a device or a simulator, for every platform its diff touches. Capture the decisive log lines always, and a screenshot as well for a user-visible change. Never a recording: they are gone (owner, 2026-09-16).
Write the evidence under a '## E2E proof' heading in your own pull request description. Never run gh: the driver publishes.
If a scenario fails, name it and say why, and still change no product code: this section proves what the branch already carries.

The pull request description as it stands now

This is the live body; you never need to fetch it, and you must not edit it. The driver merges what your final summary says into it.

## Changelog for users

- The quick tour's all-caps eyebrow now sits centred with the tour's icon, title, cards and Skip action.
- The custom answer field's placeholder stays readable when the field takes its active fill.

## Changelog for maintainers

- `apps/mobile/src/components/tour/tour-screen.tsx` — Finding 3 accepted: the modal tour header now passes `centerTitle`, so the eyebrow centres with the centred fork body; `tour-screen.mounted.test.tsx` asserts `centerTitle: true`.
- `apps/mobile/src/components/agents/question-card.tsx` — Finding 10 accepted: the custom answer field's `placeholderTextColor` follows the fill (`primaryForeground` when the field is active, `mutedForeground` otherwise); `question-card.mounted.test.tsx` pins both colours.
- `apps/mobile/src/components/agents/model-picker-content.mounted.test.tsx` — Finding 5 rejected: the row for the bridge's `currentValue` already carries `selected` and renders the trailing Check; the new test asserts exactly the bridged id is selected.
- `apps/mobile/src/components/consent/consent-card.mounted.test.tsx` — Finding 2 rejected: the privacy sentence is the last child of the `ScrollView` and the pinned actions are a following sibling, not an overlay; the new test asserts the line is inside the scroller and the accept button is outside it.
- Finding 8 (repo-selected) rejected: the branch selector already renders a loading placeholder with an accessibility label, plus empty, retryable and permanent states; existing repository-branch-selector coverage, unchanged here.
- Findings 1, 4, 6, 7 and 9 were already fixed at the base revision and are unchanged: the dev-client tool button is off, the mode reads "Orchestrator", inline-code markers are stripped, RTL text drops Latin letter tracking, and the web dev overlay is off.
- Review the two production edits first — the tour header flag and the answer-field placeholder colour; the other four files are tests. The placeholder colour keys off the same `isCustomActive` flag that drives the fill, so the two cannot drift.

## E2E proof

![e5-model-picker.png](https://github.com/user-attachments/assets/c2619e2a-340d-434c-a57d-1c359bc8a85f)

![e7 — explorer-10-unlabeled-defects-on-ios-an-icon-is-announced-3e564/e7-preferences-ar.png](https://github.com/user-attachments/assets/f8b2fd42-27cb-4cc9-a20e-a4ab123d05a2)


## Open findings (not fixed here)
- th placeholder 'Type your own answer\u2026' and 37 key nodes after the tap prove focus; the dark olive fill and placeholder legibility are the visual reviewer's judgement (e10-answer-focused.png)."}],"_vendor":"kilo"}

--- shard 2 ---
VERDICT {"verdict":"passed","scenarios":[{"name":"e2 …[truncated]
- iOS verification failed (rc=1). --- shard 1 ---
VERDICT {"verdict":"passed","scenarios":[{"name":"e1","result":"pass","evidence":"evidence/e1-voiceover.log","note":"ios Home a11y tree (130 elements, 14 human labels) has no raw SF Symbol name and no developer-tool button; the floating-button look is

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