Prepare azd core 1.29.0 release

[Copilot]

Adds the changelog entry and version bump for the azd core 1.29.0 release, mirroring the 1.28.1 release prep (#9262).

Changes

• cli/azd/CHANGELOG.md — new ## 1.28.2 (2026-07-29) section below the 1.29.0-beta.1 (Unreleased) header:
  • Features Added: [Auto-enable no-prompt mode in CI environments #9125] auto-enable no-prompt mode in CI/CD and AI-agent environments (AZD_NON_INTERACTIVE=false opts out); confirmation prompts honor defaults when stdin is exhausted.
  • Bugs Fixed: [Preserve App Service container configuration during deploy #9281] container-based App Service deploys no longer clobber unrelated site configuration; [fix(ai-agents): preserve service fields during container defaults #9211] serialized extension writes to azure.yaml so service fields aren't lost.
  • Other Changes: [fix: distinguish GitHub Copilot App execution environment #9288] GitHub Copilot app reported separately from Copilot CLI in execution.environment telemetry.
• cli/version.txt and cli/azd/pkg/azdext/version.go — 1.29.0-beta.1 → 1.28.2 (the post-release pipeline increments them back).

Commit range coverage

Cutoff is 3cf6db588 (the 1.28.1 changelog commit) through f91b4c4a2: 32 commits, 4 included. Excluded — extension-only (#9328, #9314, #9327, #9291, #9290, #9292, #9212, #9280, #9237, #9264, #9254, #9277, #9267), registry/generated testdata (#9138, #9278, #9276, #9273, #9274), CI/engsys (#9282, #9294, #9233, #9241), dependency bumps (#9240, #9269, #9272), test-only (#9313), docs-only (#9165), and the post-release version increment (#9265).

Reviewers may want to confirm the scope call on #9211 (core change is a mutex around extension-driven project config mutations) and whether #9125 belongs in a patch release.

• Fixes Create changelog for v1.28.2 release #9358

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[github-actions]

📋 Prioritization Note

Thanks for the contribution! The linked issue isn't in the current milestone yet.
Thank you for logging this issue; our team is reviewing it. If you need urgent prioritization, tag @RickWinter and @kristenwomack to let us know.

[azure-pipelines]

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[Copilot]

Pull request overview

Prepares the azd core 1.28.2 release with synchronized version metadata and release notes.

Changes:

• Adds the 1.28.2 changelog covering four user-facing changes.
• Sets the CLI and azdext SDK versions to 1.28.2.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
cli/azd/CHANGELOG.md	Adds the 1.28.2 release notes.
cli/version.txt	Sets the CLI release version.
cli/azd/pkg/azdext/version.go	Synchronizes the azdext SDK version.

[kristenwomack]

Do we want to cut this release as 1.29.0 because the "Auto-enable no-prompt mode in CI environments" that is a user-visible default-behavior change (CI/AI-agent runs now auto-enable no-prompt)? Versus v1.28.2

[JeffreyCA]

@copilot can you please add #9218 to the list?

[Copilot]

@copilot can you please add #9218 to the list?

Added #9218 under Bugs Fixed in the 1.28.2 changelog in bc1cbd8.

[hemarina]

@copilot Agree with #9359 (comment). Use 1.29.0 as version number.

[Copilot]

@copilot Agree with #9359 (comment). Use 1.29.0 as version number.

Updated the release to 1.29.0 in 4abf106: changelog heading is now ## 1.29.0 (2026-07-29), Unreleased advanced to 1.30.0-beta.1, and cli/version.txt / cli/azd/pkg/azdext/version.go are set to 1.29.0.

[hemarina]

/check-enforcer override