Update GaugeManager and SessionManager to separate app state changes and PerfSession changes

[tejasd]

No description provided.

[github-actions]

📝 PRs merging into main branch

Our main branch should always be in a releasable state. If you are working on a larger change, or if you don't want this change to see the light of the day just yet, consider using a feature branch first, and only merge into the main branch when the code complete and ready to be released.

[github-actions]

Vertex AI Mock Responses Check ⚠️

A newer major version of the mock responses for Vertex AI unit tests is available. update_responses.sh should be updated to clone the latest version of the responses: v10.0

[google-oss-bot]

	1 Warning
⚠️	Did you forget to add a changelog entry? (Add the 'no-changelog' label to the PR to silence this warning.)

Generated by 🚫 Danger

[github-actions]

Test Results

0 tests   0 ✅  0s ⏱️
0 suites  0 💤
0 files    0 ❌

Results for commit 3120db5.

♻️ This comment has been updated with latest results.

[google-oss-bot]

Coverage Report ¹

Affected Products

No changes between base commit (009c1c1) and merge commit (659bf32).

Test Logs

• Merge (659bf32): https://github.com/firebase/firebase-android-sdk/actions/runs/14666734129

1. https://storage.googleapis.com/firebase-sdk-metric-reports/IvmcrDHPoP.html

[google-oss-bot]

Size Report ¹

Affected Products

• base

  Type	Base (8fe1383)	Merge (efa78d8)	Diff
  apk (aggressive)	?	8.80 kB	? (?)
  apk (release)	?	9.77 kB	? (?)

• firebase-perf

  Type	Base (8fe1383)	Merge (efa78d8)	Diff
  aar	?	321 kB	? (?)
  apk (aggressive)	?	1.71 MB	? (?)
  apk (release)	?	10.7 MB	? (?)

• firebase-sessions

  Type	Base (8fe1383)	Merge (efa78d8)	Diff
  aar	?	202 kB	? (?)
  apk (aggressive)	?	645 kB	? (?)
  apk (release)	?	6.31 MB	? (?)

• protolite-well-known-types

  Type	Base (8fe1383)	Merge (efa78d8)	Diff
  aar	?	1.02 MB	? (?)
  apk (aggressive)	?	134 kB	? (?)
  apk (release)	?	1.71 MB	? (?)

Test Logs

• Merge (efa78d8): https://github.com/firebase/firebase-android-sdk/actions/runs/14480565118

1. https://storage.googleapis.com/firebase-sdk-metric-reports/2wSUREELpY.html

[google-oss-bot]

Startup Time Report ¹

Note: Layout is sometimes suboptimal due to limited formatting support on GitHub. Please check this report on GCS.

Startup time comparison between the CI merge commit (acbffec) and the base commit (5aff679) are not available.

No macrobenchmark data found for the base commit (5aff679). Analysis for the CI merge commit (acbffec) can be found at:

• https://storage.googleapis.com/firebase-sdk-metric-reports/AuuY1pZ2G9/index.html

1. https://storage.googleapis.com/firebase-sdk-metric-reports/AKpZVN4Px5/index.html