Update release draft model and preserve breaking changes

[koxudaxi]

Summary

• update Release Draft to use claude-opus-4-6
• preserve existing breaking changes content when a draft is upgraded from patch to minor

Verification

• ran YAML parse for .github/workflows/release-draft.yaml
• ran git diff --check
• pre-commit hooks passed during commit

Summary by CodeRabbit

• Chores
  • Refined release draft workflow with improved tag and body retrieval handling
  • Updated Claude AI model version used in release generation

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Walkthrough

The pull request modifies the release-draft GitHub Actions workflow to introduce a new variable BC_SOURCE_TAG_RAW that separates draft tag tracking from breaking changes source tracking. Additionally, the Claude AI model used in the workflow is updated from claude-opus-4-5-20251101 to claude-opus-4-6.

Changes

Cohort / File(s)	Summary
Release Workflow Configuration .github/workflows/release-draft.yaml	Introduces BC_SOURCE_TAG_RAW variable to track the source tag for fetching breaking changes content separately from DRAFT_TAG_RAW. Updates Claude model version from claude-opus-4-5-20251101 to claude-opus-4-6.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• ci: add release draft workflow with Claude Code Action #2749 — Directly related PR that introduces the same BC_SOURCE_TAG_RAW refactoring and Claude model update to the release-draft workflow.
• fix: improve release-draft workflow configuration #2750 — Related PR that modifies release-draft workflow's draft/version detection and breaking-changes handling logic in similar areas.

Poem

🐰 A tag by any other name would source the same,
BC_SOURCE_TAG_RAW now handles the breaking-change fame,
Claude-Opus-4-6 arrives with grace,
Workflows refactored, logic in place! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately captures the two main changes: updating the Claude model and preserving breaking changes in draft releases.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch release-draft-opus-46

📝 Coding Plan

• Generate coding plan for human review comments

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[github-actions]

📚 Docs Preview: https://pr-3057.datamodel-code-generator.pages.dev

[codspeed-hq]

Merging this PR will not alter performance

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

✅ 11 untouched benchmarks
⏩ 98 skipped benchmarks¹

---

_{Comparing release-draft-opus-46 (60e3376) with main (5bd8eab)}

Footnotes

1. 98 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[github-actions]

Breaking Change Analysis

Result: No breaking changes detected

Reasoning: This PR only modifies the GitHub Actions workflow file (.github/workflows/release-draft.yaml) to update the Claude model version and fix breaking changes preservation logic in the release draft process. No library source code, CLI, API, templates, defaults, or error handling are affected.

---

This analysis was performed by Claude Code Action

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (5bd8eab) to head (60e3376).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #3057   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           86        86           
  Lines        18011     18011           
  Branches      2075      2075           
=========================================
  Hits         18011     18011           

Flag	Coverage Δ
unittests	100.00% <ø> (ø)

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[github-actions]

🎉 Released in 0.56.0

This PR is now available in the latest release. See the release notes for details.