Prepare 0.14.0-preview.1 release

[David Burg (daviburg)]

Description

Prepares the Azure.Connectors.Sdk 0.14.0-preview.1 prerelease using the repository's PR-first release flow.

This release includes the full connector regeneration since 0.13.0-preview.1, including generated contract corrections, the CloudConvert client, C# property-collision preservation, and invariant path/query formatting.

Changes

• Bump eng/build/Version.props from 0.13.0-preview.1 to 0.14.0-preview.1.
• Cut CHANGELOG.md [Unreleased] content into 0.14.0-preview.1 dated 2026-08-12 and update compare links.
• Finalize packaged release_notes.md for 0.14.0-preview.1, including the DocuSign discovery rename, CloudConvert client, and MailChimp collision fix that were missing from the rolling notes.

Validation

• Release build: 0 warnings, 0 errors
• SDK tests: 953 passed
• dotnet format --verify-no-changes: clean
• markdownlint-cli2 CHANGELOG.md release_notes.md README.md: 0 errors
• CHANGELOG.md and release_notes.md: all 30 release entries match after expected heading nesting
• Simulated public-release package: Azure.Connectors.Sdk.0.14.0-preview.1.nupkg
• Package metadata: clean version, v0.14.0-preview.1 release link, dated release heading, no stale Unreleased heading
• git diff --check: clean
• Adversarial release review: no blocking findings

Post-merge release sequence

1. Tag the merged main commit as v0.14.0-preview.1 and push the tag.
2. Create the GitHub prerelease from the finalized notes.
3. Verify connectors-sdk.code-mirror (1717) and connectors-sdk.official (1718) complete for the tag and produce the clean signed package.
4. Run connectors-sdk.release (1719) from main with isReleaseBranchOrTag=True and publishToNugetOrg=True.
5. Approve the release environment gate.

Checklist

• Code follows the project's coding conventions
• No generated source files are modified
• Changelog and packaged release notes are finalized
• Version is updated in eng/build/Version.props

[Copilot]

Pull request overview

Prepares the Azure.Connectors.Sdk 0.14.0-preview.1 prerelease artifacts (versioning + release documentation) following the repo’s PR-first release process.

Changes:

• Bumps the SDK version to 0.14.0 / preview.1 in eng/build/Version.props.
• Cuts the changelog into a 0.14.0-preview.1 release dated 2026-08-12 and updates compare links.
• Finalizes release_notes.md for 0.14.0-preview.1 (mirroring the release content for packaging).

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
release_notes.md	Renames the top release section to 0.14.0-preview.1 and includes finalized release entries.
eng/build/Version.props	Updates VersionPrefix to 0.14.0 for the prerelease.
CHANGELOG.md	Adds the 0.14.0-preview.1 release section and updates compare links.

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