feat(ios): cache native compilation with ccache

[krozniata]

Summary

Test Plan

What's required for testing (prerequisites)?

What are the steps to reproduce (after prerequisites)?

Compatibility

OS	Implemented
iOS	✅❌
Android	✅❌

Checklist

• I have tested this on a device and a simulator
• I added the documentation in README.md
• I updated the typed files (TS and Flow)

[Copilot]

🟡 Changes recommended

The cache must be scoped by Xcode version to prevent stale objects after SDK updates.

1 open finding

• Namespace ccache by the selected Xcode version · New

What changed in this PR

Adds ccache to accelerate repeated iOS native builds in CI.

Changes:

• Installs and persists a 2 GB ccache.
• Routes Xcode compilation through ccache.
• Reports cache statistics after builds.

File	Description
.github/​workflows/​ios.yml	Configures and uses ccache for iOS CI builds.

🧠 Review effort: Balanced

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[github-actions]

🟢 e2e: 1 flaky, 12 passed

⚠️ 1 flaky test passed on a retry

⚠️ nested horizontal and vertical pagers scroll independently
tests/nested-pager-view.e2e.ts:38

ASSERTION_FAILED at step 14 of 14: expect.toBeVisible getByText("Vertical page number 1"), after 10.2s

• Expected: visible
• Observed: no node (0 matches)
• Screen: com.pagerviewexample / Nested PagerView Example

Evidence: screenshot, log

All 13 tests in 11 files

	Test	Time
⚠️	tests/nested-pager-view.e2e.ts · 1 flaky	15.2s
⚠️	nested horizontal and vertical pagers scroll independently (1 failed attempt first)	15.2s
🟢	tests/basic-pager.e2e.ts · 3 passed	1m 48s
🟢	basic pager › in LTR › pages horizontally	32.4s
🟢	basic pager › in LTR › pages vertically	30.2s
🟢	basic pager › in RTL › pages horizontally with the reversed gesture	45.2s
🟢	tests/issues/issue-1083-modal-set-page.e2e.ts · 1 passed	15.6s
🟢	setPage called behind a native-stack modal lands on the requested page	15.6s
🟢	tests/issues/issue-1096-keyboard-shrink.e2e.ts · 1 passed	17.3s
🟢	keyboard avoidance does not shrink the page under the keyboard	17.3s
🟢	tests/issues/issue-1098-nested-pager.e2e.ts · 1 passed	14.9s
🟢	outer pager stays responsive after its page count changes around a nested pager	14.9s
🟢	tests/issues/issue-1142-search-bar-inset.e2e.ts · 1 passed	13.8s
🟢	FlatList inside the pager gets the search bar safe-area insets	13.8s
🟢	tests/material-top-bar.e2e.ts · 1 passed	15.4s
🟢	material top tabs survive a native-stack push and pop	15.4s
🟢	tests/on-page-selected.e2e.ts · 1 passed	13.8s
🟢	onPageSelected fires an alert for every page change	13.8s
🟢	tests/scrollable-pager-view.e2e.ts · 1 passed	22.8s
🟢	pager inside a ScrollView keeps its page across vertical scrolls	22.8s
🟢	tests/smoke.e2e.ts · 1 passed	10.4s
🟢	horizontal pager pages with the panel buttons	10.4s
🟢	tests/tab-view-inside-scroll-view.e2e.ts · 1 passed	18.3s
🟢	TabView inside a ScrollView swipes tabs and scrolls the page	18.3s

_{e2e 0.18.0 · 4m 52s · ios · run artifacts}