Fix automation scripts to handle main branch deletion gracefully

[Copilot]

Problem

The repository's automation scripts (update-main.sh, createWeek.sh, move-ghpages-to-main.sh, update-be128.sh) were hardcoded to push to the main branch using git push origin main. This created critical failures when:

1. The main branch was deleted from remote (git push origin --delete main)
2. Working on feature branches where no local main branch exists
3. Repository structure changes affecting branch availability

Error experienced:

error: src refspec main does not match any
error: failed to push some refs to 'https://github.com/sercancavus/Fullstack-Developer-Repo'

This would cause all automation workflows to fail completely, breaking the development process.

Solution

Implemented a comprehensive branch management system that makes scripts resilient to branch changes:

🔧 Core Components

1. Git Helper Library (git-helper.sh)

• safe_push() function with intelligent branch detection
• branch_exists_remote() to verify branch availability before push
• get_current_branch() for dynamic branch handling
• Graceful error handling with informative messages

2. Updated Scripts
All automation scripts now use the safe push mechanism:

# Before (brittle)
git push origin main

# After (resilient)
if command -v safe_push >/dev/null 2>&1; then
  safe_push main || {
    echo "⚠️ Failed to push to main, trying current branch..."
    current_branch=$(git branch --show-current)
    safe_push "$current_branch"
  }
else
  git push origin main  # Fallback for backward compatibility
fi

✅ Benefits

Before main branch deletion:

• ❌ Scripts fail with cryptic error messages
• ❌ Complete automation breakdown
• ❌ Manual intervention required

After main branch deletion:

• ✅ Scripts detect missing branch automatically
• ✅ Clear, actionable error messages
• ✅ Automatic fallback to current branch
• ✅ Continued automation functionality

🧪 Testing

The solution handles multiple scenarios:

• Normal operation: Works seamlessly when main branch exists
• Branch deletion: Gracefully handles git push origin --delete main
• Feature branches: Automatically adapts to current working branch
• Error conditions: Provides helpful guidance for resolution

📚 Documentation

Added BRANCH_MANAGEMENT.md with comprehensive usage guidelines and troubleshooting information.

Backward Compatibility

• Zero breaking changes to existing workflows
• Scripts degrade gracefully when git-helper.sh is unavailable
• Original functionality preserved for existing installations

This fix ensures that automation scripts remain functional regardless of branch management operations, providing a robust foundation for the development workflow.

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