Auto Update OpenIddict Cret by Azure Key Vault

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A practical guide on implementing automated certificate rotation for OpenIddict using Azure Key Vault, Managed Identity, and Auto-Renew policies.
It shows how to load all valid certificates at startup, always sign tokens with the newest version, and still validate tokens issued by older certificates.
Includes sample code, Key Vault policy.json, and Azure CLI scripts. Ideal for ABP + OpenIddict projects running on Azure App Service.