Add explicit migration support to dotnetup install#53909

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dsplaisted wants to merge 12 commits intodotnet:release/dnupfrom

dsplaisted:fix/dotnetup-migrate

Commits on Apr 23, 2026

Add dotnetup migration support

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Commits on Apr 24, 2026

Fix style errors
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Commits on May 1, 2026

Merge branch 'release/dnup' into fix/dotnetup-migrate
nagilson
authored

Commits on May 6, 2026

Apply PR feedback: forward args, two-phase migration, runtime-install starter channel

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Resolve runtime migration channels before checking on-disk dedup

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Collapse onboarding branches in InstallWorkflow.Execute

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Share two-phase migration request building between init and install workflows

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Unify install failure handling and dedup migration options

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Share two-phase migration runner between init and install workflows

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Extract MigrationWorkflow from InitWorkflows

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Drop no-op ExecuteInstallRequests call on empty migration batch

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Split MigrationWorkflow tests into separate test class

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