Improve composer 2 to composer 3 migration script with various optimizations#13840

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danieldeleo wants to merge 7 commits intoGoogleCloudPlatform:mainfrom

danieldeleo:main

Commits on Feb 18, 2026

refactor: Migrate ComposerClient from gcloud shell commands to direct API calls using Google Auth and Requests.
ddeleo
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feat: Add `pause_all_dags` method and update `main` to call it
ddeleo
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feat: modify `pause_dag` and `unpause_dag` to operate on all DAGs and optimize `restore_dags_state` to use bulk unpause when possible.
ddeleo
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feat: gracefully handle existing environments during creation and add a 10-second delay after listing target DAGs.
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feat: Log specific missing DAGs while waiting for all DAGs to appear in the target environment.
ddeleo
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Commits on Feb 19, 2026