Storage - Stg104 MD5/CRC64 Combined Return

[browndav-msft]

This change enables the service to return both MD5 and CRC64 checksum values for blob upload APIs when the client provides a Content-MD5 header, instead of returning only MD5.

The behavior is gated behind API version 2026-10-06+, and is designed to support ODSP’s migration from MD5 → CRC64 without requiring additional read-backs.

Goal of this change:

Allow clients to obtain both checksums in a single request
Simplify MD5 → CRC64 migration
Eliminate unnecessary blob reads

[Copilot]

Pull request overview

This PR adds CRC64 exposure alongside existing MD5 information for blob upload-related responses in azure-storage-blob, with tests gated for service version 2026-10-06+.

Changes:

• Adds getContentCrc64() to append, block, and page blob item models.
• Maps x-ms-content-crc64 response headers into those models for selected upload operations.
• Updates tests and recordings to validate CRC64 response mapping for several sync/async upload paths.

Reviewed changes

Copilot reviewed 19 out of 19 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
sdk/storage/azure-storage-blob/swagger/README.md	Updates swagger input file source/version.
sdk/storage/azure-storage-blob/assets.json	Updates test asset recording tag.
sdk/storage/azure-storage-blob/src/main/java/com/azure/storage/blob/models/AppendBlobItem.java	Adds CRC64 storage and getter.
sdk/storage/azure-storage-blob/src/main/java/com/azure/storage/blob/models/BlockBlobItem.java	Adds CRC64 storage and getter.
sdk/storage/azure-storage-blob/src/main/java/com/azure/storage/blob/models/PageBlobItem.java	Adds CRC64 storage and getter.
sdk/storage/azure-storage-blob/src/main/java/com/azure/storage/blob/implementation/accesshelpers/AppendBlobItemConstructorProxy.java	Adds internal constructor accessor for append blob CRC64.
sdk/storage/azure-storage-blob/src/main/java/com/azure/storage/blob/implementation/accesshelpers/BlockBlobItemConstructorProxy.java	Adds internal constructor accessor for block blob CRC64.
sdk/storage/azure-storage-blob/src/main/java/com/azure/storage/blob/implementation/accesshelpers/PageBlobItemConstructorProxy.java	Adds internal constructor accessor for page blob CRC64.
sdk/storage/azure-storage-blob/src/main/java/com/azure/storage/blob/implementation/models/BlockBlobsUploadHeaders.java	Parses x-ms-content-crc64 for block blob upload responses.
sdk/storage/azure-storage-blob/src/main/java/com/azure/storage/blob/implementation/models/BlockBlobsPutBlobFromUrlHeaders.java	Parses x-ms-content-crc64 for block blob upload-from-URL responses.
sdk/storage/azure-storage-blob/src/main/java/com/azure/storage/blob/specialized/AppendBlobAsyncClient.java	Maps append upload CRC64 headers into AppendBlobItem.
sdk/storage/azure-storage-blob/src/main/java/com/azure/storage/blob/specialized/BlockBlobAsyncClient.java	Maps block upload CRC64 headers into BlockBlobItem.
sdk/storage/azure-storage-blob/src/main/java/com/azure/storage/blob/specialized/PageBlobAsyncClient.java	Maps page upload CRC64 headers into PageBlobItem.
sdk/storage/azure-storage-blob/src/test/java/com/azure/storage/blob/specialized/AppendBlobApiTests.java	Adds sync append CRC64 assertions.
sdk/storage/azure-storage-blob/src/test/java/com/azure/storage/blob/specialized/AppendBlobAsyncApiTests.java	Adds async append CRC64 assertions.
sdk/storage/azure-storage-blob/src/test/java/com/azure/storage/blob/specialized/BlockBlobApiTests.java	Adds sync block CRC64 assertions.
sdk/storage/azure-storage-blob/src/test/java/com/azure/storage/blob/specialized/BlockBlobAsyncApiTests.java	Adds async block CRC64 assertions.
sdk/storage/azure-storage-blob/src/test/java/com/azure/storage/blob/specialized/PageBlobApiTests.java	Adds sync page CRC64 assertions.
sdk/storage/azure-storage-blob/src/test/java/com/azure/storage/blob/specialized/PageBlobAsyncApiTests.java	Adds async page CRC64 assertions.

[ibrandes]

looks good! just a couple nits / questions.