docs: restore blog posts and workflow improvements

[JaegerCaiser]

📝 Blog Posts Restoration:

• CI/CD Saga: Complete guide about debugging CI/CD workflows and race conditions
• Merge vs Rebase: Comprehensive analysis of Git merge strategies

🔧 Workflow Improvements:

• Enhanced conditional deploy logic
• Fixed preview URL links in PR comments
• Improved workflow job naming to prevent conflicts

📚 Documentation:

• Updated tutorial-github-actions-schema.md with comprehensive GitHub Actions guidance
• Enhanced copilot-instructions.md with workflow best practices

🏗️ Infrastructure Changes:

• Streamlined deployment workflows with better error handling

This PR restores the blog posts that were previously reverted and includes additional workflow improvements for better CI/CD reliability.

[github-actions]

🚀 Vercel Preview Deployment

A pré-visualização para este PR foi atualizada.

Recurso	Link
🔗 URL de Preview	URL de Preview
📜 Logs do Deploy	Ver logs da Action

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Commit: b5b0e41ff9ed6c6d6160e0ed0f8284ec169b50f1

[JaegerCaiser]

Closing PR as the blog posts restoration is no longer needed. The paths-filter has been updated to exclude documentation files from triggering workflows, so future blog additions won't require special handling.