ci: stabilize E2E tests, speed up Android CI, pin actions

[artus9033]

Summary

This PR:

• stabilizes flaky E2E tests by scrolling the embedded RN surface into view and reloading with Detox sync disabled, so recovery doesn’t hang until the Jest timeout while waiting for an idle app that never settles due to RN debug animations
• adds ccache to speed up Android CXX build times
• builds only one variant (x86_64) of the Android app in CI to speed up the build
• pins SHA checksums of GH Actions
• upgrade outdated actions causing warnings
• disables cache in release workflows for security (both Android cache for BGP release workflow & Node cache for NPM publish workflow)
• do not show alert in e2e tests on both platforms to stabilize flaky E2E tests
  
• improves broken local E2E suite by:
  • running Detox postinstall from the app directory (matches CI’s AppleApp step)
  • adding ci_local_e2e_apply_brownfield_debug_pod_settings Podfile func to turn off Swift module interface emission for Debug on the three Brownfield pods
  • (follow-up issue fixes will follow) - on Expo locally without Metro, with Detox, crashes due to injected Metro-specific debug-only code appear, which may be a bigger issue with the (debug + expo + include prebuilt JS bundle) scenario - CC @adamTrz / @alpharius-ck
• disable Detox sync on Expo app startup to conserve time (otherwise, same E2E on vanilla take ~15 mins while on Expo: ~40 mins)

Test plan

CI green (few consecutive re-runs of E2E succeed).

[Copilot]

Pull request overview

This PR aims to reduce flakiness in Detox E2E tests by centralizing timing budgets, adding a “reload RN with sync disabled” recovery helper, and using those utilities in AppleApp E2E flows to avoid hangs when RN debug surfaces keep the app non-idle.

Changes:

• Added shared Detox timing constants (DETOX_TIMING) and reused them for polling/timeout budgets.
• Introduced reloadReactNativeIgnoringSync() to reload RN without waiting for app idleness.
• Refactored AppleApp Detox helpers to scroll embedded RN into view and use the new reload + timing utilities.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
apps/brownfield-example-shared-tests/e2e/detoxUtils.cjs	Adds sync-ignoring RN reload helper and replaces hardcoded polling delay with shared timing constant.
apps/brownfield-example-shared-tests/e2e/detoxTiming.cjs	Introduces centralized timing constants for E2E waits/polling/timeouts.
apps/brownfield-example-shared-tests/e2e/createDetoxJestConfig.cjs	Uses centralized test timeout from DETOX_TIMING.
apps/brownfield-example-shared-tests/e2e/appleAppDetoxUtils.cjs	Updates AppleApp E2E utilities to scroll + wait using shared timeouts and reload with sync disabled.

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[Copilot]

Pull request overview

Copilot reviewed 7 out of 8 changed files in this pull request and generated 4 comments.

[Copilot]

Pull request overview

Copilot reviewed 42 out of 43 changed files in this pull request and generated 5 comments.

[Copilot]

Pull request overview

Copilot reviewed 51 out of 52 changed files in this pull request and generated 2 comments.

[artus9033]

False positive, actions/cache needs this permission to write caches

[Copilot]

Pull request overview

Copilot reviewed 52 out of 53 changed files in this pull request and generated 2 comments.