CI/CD Test Pipeline Configuration

Generate a CI/CD pipeline configuration for running our mobile test suite.

TEST FRAMEWORK: [XCUITest / Espresso / Appium / Detox]
CI TOOL: [GitHub Actions / Bitrise / CircleCI / Jenkins / Azure DevOps]
PLATFORMS: iOS and Android

CURRENT SETUP:
- Build system: [Xcode / Gradle]
- Test device/simulator strategy: [Local simulators / Firebase Test Lab / AWS Device Farm / BrowserStack]
- Test suite size: [Number of tests, approximate runtime]

Generate a pipeline that:
1. Triggers on [PR / merge to main / nightly / manual]
2. Builds the app for testing
3. Runs unit tests first (fast feedback)
4. Runs UI/E2E tests on [simulators/real devices]
5. Generates test reports (JUnit XML / HTML)
6. Uploads test artifacts (screenshots, logs, videos)
7. Posts results to [Slack / PR comment / dashboard]
8. Fails the build if [criteria — test failures, coverage threshold]

Include separate jobs for iOS and Android where needed.