feat: check for mainbranch

01-essentials/05-cherry-pick/setup.ps1

@@ -26,7 +26,8 @@ git init | Out-Null
 git config user.name "Workshop User" | Out-Null
 git config user.email "user@workshop.local" | Out-Null
 
-# Create initial commits on main branch
+# Detect the default branch name (could be main, master, etc.)
+# First commit creates the branch, so we detect it after the first commit below
 $app = @"
 class App:
     def __init__(self):
@@ -40,6 +41,14 @@ Set-Content -Path "app.py" -Value $app
 git add app.py
 git commit -m "Initial app implementation" | Out-Null
 
+# Detect the main branch name after first commit
+$mainBranch = git branch --show-current
+if (-not $mainBranch) {
+    $mainBranch = git config --get init.defaultBranch
+    if (-not $mainBranch) { $mainBranch = "main" }
+}
+Write-Host "Default branch detected: $mainBranch" -ForegroundColor Yellow
+
 $readme = @"
 # Application
 
@@ -164,12 +173,13 @@ Write-Host "========================================" -ForegroundColor Green
 Write-Host "`nYou are on the 'development' branch with multiple commits:" -ForegroundColor Cyan
 Write-Host "- Experimental features (not ready for production)" -ForegroundColor Yellow
 Write-Host "- Critical bug fixes (needed in production NOW)" -ForegroundColor Green
+Write-Host "`nDetected main branch: $mainBranch" -ForegroundColor Cyan
 Write-Host "`nYour task:" -ForegroundColor Yellow
 Write-Host "1. Navigate to the challenge directory: cd challenge" -ForegroundColor White
 Write-Host "2. View the development branch commits: git log --oneline" -ForegroundColor White
 Write-Host "3. Identify which commits are bug fixes (look for 'Fix' in messages)" -ForegroundColor White
-Write-Host "4. Switch to main branch: git checkout main" -ForegroundColor White
-Write-Host "5. Cherry-pick ONLY the bug fix commits to main" -ForegroundColor White
-Write-Host "6. Do NOT bring the experimental features to main" -ForegroundColor White
+Write-Host "4. Switch to $mainBranch branch: git checkout $mainBranch" -ForegroundColor White
+Write-Host "5. Cherry-pick ONLY the bug fix commits to $mainBranch" -ForegroundColor White
+Write-Host "6. Do NOT bring the experimental features to $mainBranch" -ForegroundColor White
 Write-Host "`nHint: Look for commits mentioning 'security' and 'performance' fixes" -ForegroundColor Cyan
 Write-Host "Run '../verify.ps1' from the challenge directory to check your solution.`n" -ForegroundColor Cyan