Release v1.27.0

[wangbill (YunchuWang)]

Summary

What changed?

• Prepare shared SDK version 1.27.0 and pin the published Microsoft.Azure.DurableTask.Core 3.11.1 package.
• Keep the aggregate 1.27.0 changelog and only the two directly relevant purge-package RELEASENOTES.md changes: Extensions.AzureBlobPayloads and LargePayloadPurge.Abstractions.
• Limit the final PR diff to five files. Restore the other twelve per-package release-note paths to their exact PR-base state, including removing notes introduced only by this PR.
• Preserve independent versions and existing preview suffixes. LargePayloadPurge.Abstractions inherits the shared 1.27.0 version; it does not introduce a separate contracts version.

Why is this change needed?

• The merged purge APIs require a new SDK release: published Client/Abstractions 1.26.0 do not contain the required Client models. A minor release accounts for the additive public APIs.
• Prepare the release against actual published Core bytes without refreshing unrelated package notes. No runtime source, project, protobuf, publication-pipeline, or workflow changes are included.

Issues / work items

• Resolves: N/A; this prepares already-merged changes for release.
• Related: #805, #758.

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Project checklist

• Release notes are not required for the next release
  • Otherwise: Notes added to release_notes.md
• Backport is not required
  • Otherwise: Backport tracked by issue/PR #issue_or_pr
• All required tests have been added/updated (unit tests, E2E tests)
• Breaking change?
  • If yes:
    • Impact: No API signatures or protobuf fields are edited by this release-preparation PR.
    • Migration guidance: Not applicable to this release-metadata and documentation correction; no independent package version is changed here.

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AI-assisted code disclosure (required)

Was an AI tool used? (select one)

• No
• Yes, AI helped write parts of this PR (e.g., GitHub Copilot)
• Yes, an AI agent generated most of this PR

If AI was used:

• Tool(s): GitHub Copilot.
• AI-assisted areas/files: Shared version and dependency metadata, changelog, the two purge-package release notes, restoration of unrelated note paths, and this description.
• What you changed after AI output: No subsequent human edits are claimed. Human review attestations remain unchecked.

AI verification (required if AI was used):

• I understand the code and can explain it
• I verified referenced APIs/types exist and are correct
• I reviewed edge cases/failure paths (timeouts, retries, cancellation, exceptions)
• I reviewed concurrency/async behavior
• I checked for unintended breaking or behavior changes

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Testing

Automated tests

• Result: Passed: focused documentation/metadata checks for this correction. The final PR has exactly the five approved paths; the twelve restored note paths match the base blobs or are absent when absent from the base.
• Verified shared version 1.27.0, published Core pin 3.11.1, both retained purge-package notes, and aggregate changelog are unchanged from the original candidate. Runtime/project/protobuf/workflow files and intentional version overrides are unchanged.
• git diff --check: passed.
• git -c core.whitespace=blank-at-eol,blank-at-eof,space-before-tab,cr-at-eol --no-pager diff --check origin/main...HEAD: passed. cr-at-eol recognizes the changelog's existing committed CRLF format without disabling the usual whitespace rules.
• git diff --name-only origin/main...HEAD: verified exactly CHANGELOG.md, Directory.Packages.props, eng/targets/Release.props, src/Extensions/AzureBlobPayloads/RELEASENOTES.md, and src/LargePayloadPurge.Abstractions/RELEASENOTES.md.
• Runtime tests, builds, restores, and packs were not rerun for this documentation-only trim. Earlier 696 passing tests and ten validation packs apply to the original fd69573eb919b56e3ffdca78afa9a0f16e092fb1 candidate, not new binaries or corrected-commit package provenance.
• Hosted CI remains separate; no hosted-pass claim is made. Unrelated feed/authentication failures were not retried or repaired. No emulator/cloud suites, official signing, or publication were performed for this correction.

Manual validation (only if runtime/behavior changed)

• Environment (OS, .NET version, components): Windows; .NET SDK 10.0.402; public Core 3.11.1.
• Steps + observed results:
  1. Not applicable to this documentation-only trim; exact source-restoration and metadata checks are recorded above.
  2. No cloud/service resources or release workflows were invoked.
  3. No release tags, publication, or GitHub release were created.
• Evidence (optional): Before/after source hashes, exact note-restoration checks, final five-file scope, patch hygiene, and push/PR-body readbacks were retained for review.

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Notes for reviewers

• Only the two directly relevant purge-package notes remain in the PR; unrelated per-package refreshes, including independent test-host notes, were removed. The root changelog retains the accurate aggregate release history.
• Release notes use this repository's actual CHANGELOG.md and RELEASENOTES.md convention; the checklist's generic release_notes.md path is not a new deliverable.
• Generators remains 2.1.0-preview.2; InProcessTestHost remains 0.2.3-preview.1; ScheduledTasks and ExportHistory retain preview.2 with the shared prefix.
• Direct public downloads confirmed both preserved independent versions already exist on NuGet. They cannot be overwritten; publishing the new test-host changes requires a separately approved independent version.
• Existing publication gates remain approval -> Client/Abstractions -> purge contracts -> Blob. Release operators must also confirm Worker, Grpc, Client.Grpc, and Worker.Grpc are published/restorable; those additional edges are validated locally but are not all enforced by the existing publication gate.
• Before the original push, all 16 proposed shared-version package downloads returned 404 from public NuGet. This was a point-in-time collision check, not a reservation or a new check for this documentation correction.
• This PR prepares source artifacts only. It does not authorize tagging, publishing, workflow dispatch, or merging.

[Copilot]

🔵 Needs a closer look

The SDK-wide Core dependency upgrade warrants hosted CI and maintainer validation beyond the reported focused local checks.

1 open issue

• Remove existing Interceptors feature from 1.27.0 release notes · New

What changed in this PR

Prepares SDK release 1.27.0 through version metadata and release notes, without changing runtime source or publication workflows.

Changes:

• Bumps the shared SDK version to 1.27.0 while preserving independent versions and preview suffixes.
• Updates Durable Task Core to 3.11.1.
• Consolidates release notes for purge support, scheduler authentication, shim restarts, and test-host fixes.

File	Description
src/​Worker/​Grpc/​RELEASENOTES.md	Documents worker transport, purge handling, and dependency updates.
src/​Worker/​Core/​RELEASENOTES.md	Records the transitive Core update.
src/​Worker/​AzureManaged/​RELEASENOTES.md	Removes obsolete initial-release text.
src/​Worker/​AzureManaged.Sandboxes/​RELEASENOTES.md	Documents sandbox authentication behavior.
src/​LargePayloadPurge.Abstractions/​RELEASENOTES.md	Names the shared purge contracts.
src/​InProcessTestHost/​RELEASENOTES.md	Summarizes test-host fixes and compatibility changes.
src/​Grpc/​RELEASENOTES.md	Documents purge service messages.
src/​Extensions/​AzureBlobPayloads/​RELEASENOTES.md	Summarizes auto-purge and host integration.
src/​Client/​OrchestrationServiceClientShim/​RELEASENOTES.md	Documents restart version preservation.
src/​Client/​Grpc/​RELEASENOTES.md	Records authenticated purge control.
src/​Client/​Core/​RELEASENOTES.md	Documents purge models and dependency updates.
src/​Client/​AzureManaged/​RELEASENOTES.md	Removes obsolete initial-release text.
src/​Client/​AzureManaged.Sandboxes/​RELEASENOTES.md	Documents sandbox token audiences.
src/​Abstractions/​RELEASENOTES.md	Records the Core dependency update.
eng/​targets/​Release.props	Sets shared version 1.27.0.
Directory.Packages.props	Sets Core dependency version 3.11.1.
CHANGELOG.md	Consolidates the 1.27.0 release entries.

_{Review effort: Balanced}

[Copilot]

🟢 Approval recommended

The five-file release-preparation changes match the stated scope, with no blocking issues identified.

No open issues 🎉

1 resolved since last review

• Remove existing Interceptors feature from 1.27.0 release notes

_{Review effort: Balanced}