chore: sync workflow templates

[stranske]

Sync Summary

Files Updated

• autofix.yml: Autofix workflow - automatically fixes lint/format issues
• issue_optimizer.py: Issue optimizer - analyzes issues and suggests improvements
• pr_verifier.py: PR verifier - validates PR changes against acceptance criteria
• followup_issue_generator.py: Follow-up issue generator - creates issues from verification feedback

Files Skipped

• pr-00-gate.yml: File exists and sync_mode is create_only
• ci.yml: File exists and sync_mode is create_only
• dependabot.yml: File exists and sync_mode is create_only
• llm_slots.json: None

---

Review Checklist

• CI passes with updated workflows
• No repo-specific customizations were overwritten

Source: stranske/Workflows
Manifest: .github/sync-manifest.yml

[stranske-keepalive]

⚠️ Action Required: Unable to determine source issue for PR #122. The PR title, branch name, or body must contain the issue number (e.g. #123, branch: issue-123, or the hidden marker ).

[agents-workflows-bot]

🤖 Keepalive Loop Status

PR #122 | Agent: Codex | Iteration 0/5

Current State

Metric	Value
Iteration progress	[----------] 0/5
Action	wait (missing-agent-label)
Disposition	skipped (transient)
Gate	success
Tasks	0/8 complete
Timeout	45 min (default)
Timeout usage	10m elapsed (24%, 35m remaining)
Keepalive	❌ disabled
Autofix	❌ disabled

🔍 Failure Classification

| Error type | infrastructure |
| Error category | resource |
| Suggested recovery | Confirm the referenced resource exists (repo, PR, branch, workflow, or file). |

[Copilot]

Pull request overview

This PR synchronizes workflow templates and scripts from the stranske/Workflows repository. The changes introduce improved error handling for optional dependencies and enhanced failure detection logic in the autofix workflow.

Changes:

• Removed blank lines after pydantic imports in two Python files for consistency
• Enhanced followup_issue_generator.py to handle optional langchain_core dependency with graceful fallback
• Improved autofix workflow to prefer job-based failure detection over check-based detection with fallback logic

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
scripts/langchain/pr_verifier.py	Removed blank line after pydantic import for style consistency
scripts/langchain/issue_optimizer.py	Removed blank line after pydantic import for style consistency
scripts/langchain/followup_issue_generator.py	Added optional langchain_core dependency handling with multi-level fallback
.github/workflows/autofix.yml	Added job-based failure detection as primary method with check-based fallback

[github-actions]

Autofix updated these files:

• scripts/langchain/issue_optimizer.py
• scripts/langchain/pr_verifier.py
• tests/test_validate_release_workflow_yaml.py

[stranske]

Superseded by merged sync PR #124.