feat: check for mainbranch

01-essentials/07-reset/setup.ps1

@@ -33,6 +33,9 @@ git init | Out-Null
 git config user.name "Workshop Student"
 git config user.email "student@example.com"
 
+# Detect the default branch name after first commit (created below)
+# Will be detected after the initial commit
+
 # ============================================================================
 # Create initial commit (shared by all scenarios)
 # ============================================================================
@@ -45,6 +48,14 @@ Set-Content -Path "README.md" -Value $readmeContent
 git add .
 git commit -m "Initial commit" | 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
+
 # ============================================================================
 # SCENARIO 1: Soft Reset (--soft)
 # ============================================================================
@@ -155,7 +166,7 @@ Write-Host "[CREATED] soft-reset branch with commit to reset --soft" -Foreground
 Write-Host "`nScenario 2: Creating mixed-reset branch..." -ForegroundColor Cyan
 
 # Switch back to initial commit and create mixed-reset branch
-git switch main | Out-Null
+git switch $mainBranch | Out-Null
 git switch -c mixed-reset | Out-Null
 
 # Build up scenario 2 commits
@@ -256,7 +267,7 @@ Write-Host "[CREATED] mixed-reset branch with commits to reset --mixed" -Foregro
 Write-Host "`nScenario 3: Creating hard-reset branch..." -ForegroundColor Cyan
 
 # Switch back to main and create hard-reset branch
-git switch main | Out-Null
+git switch $mainBranch | Out-Null
 git switch -c hard-reset | Out-Null
 
 # Reset to basic state