Edge actions api 2025 12 01 preview - Remove addAttachment and deleteAttachment operations from the public EdgeActions API

[tundwed]

ARM (Control Plane) API Specification Update Pull Request

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Purpose of this PR

Introduce 2025-12-01-preview API version to remove addAttachment and deleteAttachment operations from the public EdgeActions API, as these attachment operations are internal to the AFD resource provider and will only be accessible through AFD endpoints.

• New resource provider.
• [x ] New API version for an existing resource provider. (If API spec is not defined in TypeSpec, the PR should have been created in adherence to OpenAPI specs PR creation guidance).
• Update existing version for a new feature. (This is applicable only when you are revising a private preview API version.)
• Update existing version to fix OpenAPI spec quality issues in S360.
• Convert existing OpenAPI spec to TypeSpec spec (do not combine this with implementing changes for a new API version).
• Other, please clarify:
  • edit this with your clarification

Due diligence checklist

To merge this PR, you must go through the following checklist and confirm you understood
and followed the instructions by checking all the boxes:

• [ x] I confirm this PR is modifying Azure Resource Manager (ARM) related specifications, and not data plane related specifications.
• [ x] I have reviewed following Resource Provider guidelines, including
  ARM resource provider contract and
  REST guidelines (estimated time: 4 hours).
  I understand this is required before I can proceed to the diagram Step 2, "ARM API changes review", for this PR.
• A release plan has been created. If not, please create one as it will help guide you through the REST API and SDK creation process.

Additional information

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[github-actions]

Next Steps to Merge

Next steps that must be taken to merge this PR:

• ❌ This PR targets either the main branch of the public specs repo or the RPSaaSMaster branch of the private specs repo. These branches are not intended for iterative development. Therefore, you must acknowledge you understand that after this PR is merged, the APIs are considered shipped to Azure customers. Any further attempts at in-place modifications to the APIs will be subject to Azure's versioning and breaking change policies. Additionally, for control plane APIs, you must acknowledge that you are following all the best practices documented by ARM at aka.ms/armapibestpractices. If you do intend to release the APIs to your customers by merging this PR, add the PublishToCustomers label to your PR in acknowledgement of the above. Otherwise, retarget this PR onto a feature branch, i.e. with prefix release- (see aka.ms/azsdk/api-versions#release--branches).
• ❌ This PR is in purview of the ARM review (label: ARMReview). This PR must get ARMSignedOff label from an ARM reviewer.
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• ❌ The required check named TypeSpec Validation has failed. Refer to the check in the PR's 'Checks' tab for details on how to fix it and consult the aka.ms/ci-fix guide

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[github-actions]

API Change Check

APIView identified API level changes in this PR and created the following API reviews

Language	API Review for Package
Swagger	Microsoft.Cdn-EdgeActions
TypeSpec	Microsoft.Cdn
Go	sdk/resourcemanager/edgeactions/armedgeactions
Python	azure-mgmt-edgeactions
C#	Azure.ResourceManager.EdgeActions
JavaScript	@azure/arm-edgeactions
Java	com.azure.resourcemanager:azure-resourcemanager-edgeactions

[sandipsh]

please address swagger lintdiff and avocado and typespec errors.