Fix version stripping workflow to auto-merge and skip tests

[neuromechanist]

Problem

The ensure-stable-version.yml workflow has issues that cause dev suffix stripping commits to appear in feature branches:

1. Manual PR merge required: The workflow creates a PR to strip dev suffix, but requires manual merge. This delays releases and creates manual work.

2. Test overhead: The version-only change runs full test suite unnecessarily, wasting CI resources.

3. Version leakage: When these PRs (chore: strip dev suffix for stable release 0.5.3 #109, etc.) merge to main → develop → feature branches, the stripped version leaks into development branches where it shouldn't be.

Current Workflow

.github/workflows/ensure-stable-version.yml:

• Triggers on push to main when src/version.py changes
• Creates branch bot/strip-dev-suffix-X.Y.Z
• Strips dev suffix
• Creates PR to main
• Requires manual review and merge ❌
• Runs full test suite ❌

Proposed Solution

Modify the workflow to:

1. Create PR with version strip
2. Add comment explaining tests aren't needed (version-only change)
3. Skip CI tests or mark as not required for this automated change
4. Auto-merge the PR using --admin flag or enabling auto-merge on the repo
5. Close issue Auto-select Anthropic provider for Anthropic models #116 automatically after merge

Implementation Details

Option 1: Skip Tests for Bot PRs

Add to .github/workflows/test.yml:

on:
  pull_request:
    branches: [main, develop]

jobs:
  test:
    if: github.actor \!= 'github-actions[bot]' || \!contains(github.head_ref, 'bot/strip-dev-suffix')

Option 2: Auto-merge with Admin Override

In ensure-stable-version.yml:

- name: Auto-merge PR
  run: |
    gh pr merge $PR_NUMBER --squash --admin --delete-branch

Option 3: Use Auto-merge Feature

Enable auto-merge on the repo and use:

- name: Enable auto-merge
  run: |
    gh pr merge $PR_NUMBER --squash --auto --delete-branch

Expected Outcome

• ✅ Version stripping happens automatically
• ✅ No manual intervention required
• ✅ Tests skipped for version-only changes
• ✅ No version leakage into develop/feature branches
• ✅ Faster release process

References

• Current workflow: .github/workflows/ensure-stable-version.yml
• Example PR: chore: strip dev suffix for stable release 0.5.3 #109
• Related issue: Auto-select Anthropic provider for Anthropic models #116 (closed by PR feat: auto-select Anthropic provider for Anthropic models #117)
• Branch protection: Requires PR review for main

[neuromechanist]

Fixed in PR #122. The workflow now pushes directly to main using CI_ADMIN_TOKEN with comprehensive error handling:

✅ No PR creation needed
✅ Tests skip automatically for bot commits
✅ All error conditions validated
✅ Remote push verified

The workflow will be tested on the next version bump to main.