[0xadam-brown]

PR Stack (Nav3 Lifecycle)

• feat(android): LifecycleOwner support for Nav3 #6301
• ref(android): [Nav3 Lifecycle 1] Add NavLeaseCoordinator #6302
• ref(android): [Nav3 Lifecycle 2] Add lease-aware NavScopes facade #6304
• feat(android): [Nav3 Lifecycle 3] Coordinate SentryNavEffect access to current IScope #6305
• test(android): [Nav3 Lifecycle 4] Integration tests for lifecycle handoffs #6307
• feat(sample): [Nav3 Lifecycle 5] Add Nav3 lifecycle scenarios to sample app #6309

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📜 Description

Introduce a new CoordinatedBackStackObserver that lets SentryNavEffect make use of the state coordination code we added to .navigation3.lifecycle.

Each effect now stages nav data through the lease-aware NavScopes layer and only publishes it while its navigation root owns the lease to the shared Sentry IScope.

💡 Motivation and Context

Applications can host more than one Navigation 3 root at a time. Lifecycle coordination prevents an inactive root from clearing or overwriting the active root's navigation state.

addresses: JAVA-274

💚 How did you test it?

• Unit tests
• Integration tests (included in a later PR)
• New Nav3 sample app flows (also in a later PR) + having my clanker perform lots of thorough manual testing

📝 Checklist

• I added GH Issue ID & Linear ID
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.
• Public API changes reviewed by another Mobile SDK team member or implemented according to the develop docs spec.

🔮 Next steps

The next PR adds lifecycle integration coverage for overlapping Activities, Fragments, and ViewPager pages.

⚠️ Merge this PR using a merge commit (not squash). Only the collection branch is squash-merged into main.

[linear-code]

JAVA-274

[github-actions]

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📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

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📲 Install Builds

Android

🔗 App Name	App ID	Version	Configuration
SDK Size	io.sentry.tests.size	8.61.0 (1)	release

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