Lower minSdk from 26 → 24

[joshpensky]

Summary

• Lowers `minSdk` from 26 (Android 8.0 Oreo) to 24 (Android 7.0 Nougat) across all modules: `evervault-core`, `evervault-cages`, `evervault-enclaves`, `evervault-inputs`, `sampleapplication`, and `examples/shared`
• Lowers `minCompileSdk` in AAR metadata from 26 to 24 for all library modules — consumers of the library now only need `compileSdk >= 24`
• Replaces `java.time.*` usage (`LocalDate`, `YearMonth`) with `java.util.Calendar` in `CreditCardExpirationDateValidator` — `java.time` is only available on API 26+
• Upgrades `evervault-pay` dependency to v0.0.30, which includes the same minSdk reduction

Breaking changes

None. This widens the range of supported devices without removing any APIs.

Device coverage

Raises Google Play coverage from ~94% to ~97% of active Android devices.

Test plan

• Build all modules and confirm no lint warnings about API level usage
• Run existing instrumented tests on an API 24 emulator/device

🤖 Generated with Claude Code

[changeset-bot]

🦋 Changeset detected

Latest commit: fe12e89

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
evervault-android	Minor

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[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	maven/​io.netty/​netty-codec-http2@​4.1.133.Final ⏵ 4.1.135.Final		+4

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[socket-security]

Warning

Review the following alerts detected in dependencies.

According to your organization's Security Policy, it is recommended to resolve "Warn" alerts. Learn more about Socket for GitHub.

Action	Severity	Alert  (click "▶" to expand/collapse)
Warn		Obfuscated code: maven io.netty:netty-codec is 90.0% likely obfuscated Confidence: 0.90 Location: Package overview From: evervault-cages/gradle.lockfile → maven/io.netty/netty-codec-http2@4.1.135.Final → maven/io.netty/netty-codec@4.1.135.Final ℹ Read more on: This package | This alert | What is obfuscated code? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: Packages should not obfuscate their code. Consider not using packages with obfuscated code. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity ignore maven/io.netty/netty-codec@4.1.135.Final. You can also ignore all packages with @SocketSecurity ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.
Warn		Obfuscated code: maven io.netty:netty-codec is 90.0% likely obfuscated Confidence: 0.90 Location: Package overview From: evervault-cages/gradle.lockfile → maven/io.netty/netty-codec-http2@4.1.135.Final → maven/io.netty/netty-codec@4.1.135.Final ℹ Read more on: This package | This alert | What is obfuscated code? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: Packages should not obfuscate their code. Consider not using packages with obfuscated code. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity ignore maven/io.netty/netty-codec@4.1.135.Final. You can also ignore all packages with @SocketSecurity ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.

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