[adinauer]

PR Stack (Scope-Based Deduplication)

• feat(core): Scope-based duplicate event detection #6428
• feat(core): [Scope-Based Deduplication 1] Add event processor fork semantics #6429
• feat(core): [Scope-Based Deduplication 2] Add scope-based duplicate event processor #6430
• feat(core): [Scope-Based Deduplication 3] Add scope-based deduplication option #6431

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📜 Description

Expose experimental scope-based duplicate event detection through SentryOptions, external properties, Android manifest metadata, and all supported Spring Boot property binders. Install the processor only on the root isolation scope and warn when legacy deduplication remains enabled.

Use the new behavior with:

enable-deduplication=false
enable-scope-based-deduplication=true

💡 Motivation and Context

Reusable or singleton exception instances can occur repeatedly across requests, but global throwable identity deduplication can suppress every occurrence after the first. Isolation-scope state preserves same-request cross-integration deduplication without suppressing unrelated requests.

refs: #6365

💚 How did you test it?

• Full ./gradlew :sentry:test
• Logback, Log4j2, and JUL integration tests
• Spring MVC and WebFlux integration tests
• Spring Boot 2, 3, and 4 property and installation tests
• Android manifest and initialization tests
• ./gradlew spotlessApply :sentry:updateKotlinAbi

📝 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

Evaluate the experimental mode with affected integrations before considering it as the default deduplication behavior.

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

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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	8.62.0 (1)	release

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