Fix changesets workflow - Remove duplicate tag creation and update job dependencies

[Copilot]

The changesets workflow job was failing because changeset.js attempted to create a git tag that the release job had already created, resulting in fatal: tag already exists.

Workflow sequence

The release workflow now runs jobs in the following order:

1. release job: Computes version → creates tag → builds binaries → creates GitHub release
2. agent job: Generates release highlights
3. changesets job: Runs changeset.js → updates CHANGELOG → commits

Changes

Script Changes

• Removed git tag -a command from changeset.js
• Removed git push origin <tag> command from changeset.js
• Updated error recovery instructions to exclude tag operations
• Added documentation note that tags must be pre-created by caller

The script now only updates CHANGELOG.md, deletes changeset files, commits changes, and pushes to main—no tag operations.

Workflow Changes

• Updated changesets job dependencies to include agent job
• The changesets job now runs after the agent job completes, ensuring release highlights are generated before the CHANGELOG is updated

Custom agent used: agentic-workflows
GitHub Agentic Workflows (gh-aw) - Create, debug, and upgrade AI-powered workflows with intelligent prompt routing

Original prompt

Fix the failing GitHub Actions workflow changesets
Analyze the workflow logs, identify the root cause of the failure, and implement a fix.

The script changeset.js SHOULD NOT TRY TO CREATE A TAG. It receives a tag that already exists.

Job ID: 62405913951
Job URL: https://github.com/github/gh-aw/actions/runs/21648017836/job/62405913951

Custom agent used: agentic-workflows
GitHub Agentic Workflows (gh-aw) - Create, debug, and upgrade AI-powered workflows with intelligent prompt routing

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[pelikhan]

Copilot, update the needs for the changelog job so it runs after the agent job and depends on the agent job.

[pelikhan]

@copilot, update the needs for the changelog job so it runs after the agent job and depends on the agent job.

[Copilot]

Pull request overview

This PR fixes a workflow failure by removing duplicate git tag creation from the changeset.js script. The release workflow was failing because the changesets job attempted to create a git tag that the release job had already created, resulting in a "fatal: tag already exists" error.

Changes:

• Removed git tag creation and push operations from changeset.js
• Updated documentation to clarify that tags must be pre-created by the caller
• Updated error recovery instructions to reflect the removal of tag operations

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[Copilot]

Copilot, update the needs for the changelog job so it runs after the agent job and depends on the agent job.

Updated in cc494d8. The changesets job now depends on the agent job and runs after it completes.