chore: ci workflow for app size analysis

[buenaflor]

📜 Description

Adds a CI workflow to enable Sentry Size Analysis for the flutter/example app. This workflow builds production iOS (XCArchive) and Android (AAB) artifacts and uploads them to Sentry for size trend monitoring.

Additionally, the Android example app's application/package ID was renamed from io.sentry.samples.flutter to io.sentry.flutter.sample for consistency with Sentry's SDK naming conventions. This includes updating the Kotlin MainActivity package declaration, AndroidManifest.xml, build.gradle, proguard rules, and related test files.

💡 Motivation and Context

This change implements Sentry's Size Analysis feature to proactively monitor the sentry-flutter example app's size in CI. The goal is to track build size trends. This follows the official Sentry documentation for integrating Size Analysis into CI.

Example of how it looks like:

Android

iOS

Closes #3323

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• No new PII added or SDK only sends newly added PII if sendDefaultPii is enabled
• I updated the docs if needed
• All tests passing
• No breaking changes

🔮 Next steps

Monitor initial workflow runs to ensure successful uploads and correct data visibility in Sentry's Size Analysis feature. Consider adding size budget checks in future iterations.

#skip-changelog

[cursor]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.33%. Comparing base (20faa47) to head (1b45278).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3368      +/-   ##
==========================================
+ Coverage   88.31%   90.33%   +2.01%     
==========================================
  Files         291       95     -196     
  Lines        9957     3198    -6759     
==========================================
- Hits         8794     2889    -5905     
+ Misses       1163      309     -854     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[github-actions]

Android Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	423.94 ms	430.68 ms	6.74 ms
Size	14.31 MiB	15.49 MiB	1.19 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
2d34233	470.54 ms	558.90 ms	88.36 ms
67de70c	375.88 ms	356.11 ms	-19.77 ms
a909995	383.55 ms	370.78 ms	-12.77 ms
73dca78	476.53 ms	522.21 ms	45.68 ms
640ad0c	466.00 ms	552.67 ms	86.67 ms
a10aff4	488.19 ms	515.02 ms	26.83 ms
c97f488	502.43 ms	492.47 ms	-9.97 ms
396cb30	405.70 ms	427.56 ms	21.86 ms
cf443d2	464.64 ms	479.04 ms	14.40 ms
bbdbcb9	400.81 ms	409.12 ms	8.31 ms

App size

Revision	Plain	With Sentry	Diff
2d34233	6.54 MiB	7.55 MiB	1.01 MiB
67de70c	14.31 MiB	15.49 MiB	1.19 MiB
a909995	14.09 MiB	15.28 MiB	1.19 MiB
73dca78	6.54 MiB	7.69 MiB	1.15 MiB
640ad0c	6.54 MiB	7.69 MiB	1.15 MiB
a10aff4	13.93 MiB	15.06 MiB	1.13 MiB
c97f488	14.31 MiB	15.49 MiB	1.19 MiB
396cb30	13.93 MiB	15.06 MiB	1.13 MiB
cf443d2	13.93 MiB	15.00 MiB	1.06 MiB
bbdbcb9	13.93 MiB	15.18 MiB	1.25 MiB

Previous results on branch: cursor/add-ci-workflow-for-app-size-analysis-claude-4.5-opus-high-thinking-5fe5

Startup times

Revision	Plain	With Sentry	Diff
474a041	391.70 ms	377.71 ms	-13.99 ms
7c194a8	382.81 ms	376.65 ms	-6.16 ms
32c38b5	380.15 ms	365.10 ms	-15.04 ms
5432a8c	437.59 ms	429.08 ms	-8.51 ms

App size

Revision	Plain	With Sentry	Diff
474a041	14.31 MiB	15.49 MiB	1.19 MiB
7c194a8	14.31 MiB	15.49 MiB	1.19 MiB
32c38b5	14.31 MiB	15.49 MiB	1.19 MiB
5432a8c	14.31 MiB	15.49 MiB	1.19 MiB

[github-actions]

iOS Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1242.42 ms	1250.74 ms	8.32 ms
Size	5.73 MiB	6.17 MiB	455.44 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
fd88186	1255.06 ms	1252.76 ms	-2.30 ms
114239b	1225.74 ms	1230.17 ms	4.43 ms
a10aff4	1241.67 ms	1255.02 ms	13.35 ms
5a95d04	1263.17 ms	1265.37 ms	2.20 ms
e45c0e1	1269.08 ms	1278.83 ms	9.75 ms
f872f8e	1253.29 ms	1250.49 ms	-2.80 ms
2cf9161	1248.33 ms	1266.55 ms	18.22 ms
75284dc	1254.81 ms	1262.28 ms	7.46 ms
7cfbbd6	1270.63 ms	1285.36 ms	14.72 ms
cf443d2	1255.79 ms	1248.38 ms	-7.40 ms

App size

Revision	Plain	With Sentry	Diff
fd88186	5.53 MiB	6.00 MiB	479.94 KiB
114239b	5.53 MiB	5.96 MiB	444.85 KiB
a10aff4	5.53 MiB	6.00 MiB	486.71 KiB
5a95d04	5.53 MiB	6.01 MiB	487.81 KiB
e45c0e1	7.86 MiB	9.44 MiB	1.58 MiB
f872f8e	5.53 MiB	5.96 MiB	444.81 KiB
2cf9161	7.86 MiB	9.44 MiB	1.58 MiB
75284dc	5.53 MiB	5.97 MiB	453.77 KiB
7cfbbd6	7.86 MiB	9.44 MiB	1.58 MiB
cf443d2	5.53 MiB	6.00 MiB	479.99 KiB

Previous results on branch: cursor/add-ci-workflow-for-app-size-analysis-claude-4.5-opus-high-thinking-5fe5

Startup times

Revision	Plain	With Sentry	Diff
7c194a8	1257.20 ms	1264.68 ms	7.48 ms
474a041	1214.49 ms	1213.51 ms	-0.98 ms
5432a8c	1249.52 ms	1252.86 ms	3.33 ms
32c38b5	1268.33 ms	1257.51 ms	-10.82 ms

App size

Revision	Plain	With Sentry	Diff
7c194a8	5.73 MiB	6.17 MiB	455.44 KiB
474a041	5.73 MiB	6.17 MiB	455.46 KiB
5432a8c	5.73 MiB	6.17 MiB	455.45 KiB
32c38b5	5.73 MiB	6.17 MiB	455.44 KiB

[sentry]

Sentry Build Distribution

App Name	App ID	Version	Configuration	Install Page
sentry_flutter_example	io.sentry.flutter.sample	9.15.0 (1)	Release	Install Build

[Copilot]

Pull request overview

Adds a GitHub Actions workflow to build release Android/iOS artifacts for the Flutter example app and upload them to Sentry Size Analysis, while also aligning the Android example app id/package with iOS and updating affected tests/fixtures.

Changes:

• Add Size Analysis CI workflow (Android AAB + iOS XCArchive) and a shared composite setup action (Flutter install, Sentry CLI install, build version env).
• Rename the Flutter example Android package/applicationId from io.sentry.samples.flutter to io.sentry.flutter.sample.
• Update integration + JVM parsing tests/fixtures to match the new Android package name.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
packages/flutter/test/jvm/jvm_frame_test.dart	Update expected JVM frame class/package strings for renamed Android package.
packages/flutter/test/jvm/jvm_exception_test.dart	Update JVM stack trace fixtures to use the new package name.
packages/flutter/test/android_platform_exception_event_processor_test.dart	Update JVM stack trace fixture for platform exception processing to use the new package name.
packages/flutter/example/integration_test/integration_test.dart	Align expected app id to the unified io.sentry.flutter.sample.
packages/flutter/example/android/app/src/main/kotlin/io/sentry/flutter/sample/MainActivity.kt	Update Kotlin package declaration to match the new namespace/app id.
packages/flutter/example/android/app/src/main/AndroidManifest.xml	Update manifest package to the new app id.
packages/flutter/example/android/app/proguard-rules.pro	Update ProGuard keep rules to the new package namespace.
packages/flutter/example/android/app/build.gradle	Update namespace and applicationId to io.sentry.flutter.sample.
.github/workflows/size-analysis.yml	New workflow to build and upload Android/iOS artifacts for size analysis.
.github/actions/size-analysis-setup/action.yml	New composite action to set up Flutter, install sentry-cli, and derive build version env.

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[cursor]

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