[APPS-2792] Add: v3 to v4 migration guide entry - #511

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tyffical wants to merge 2 commits into

tiffany.trinh/apps-2792-custom-credentials-local-resolutionfrom

tiffany.trinh/apps-2792-migrations-v3-to-v4

Commits on Sep 10, 2026

docs(apps): add v3 to v4 migration guide for local execution changes
tyffical
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docs: cover Custom Credentials and identity hydration in v3-to-v4 migration guide
tyffical
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3e35c51