feat: lock when loading profile + improvements to terminal settings

Documents/PowerShell/Microsoft.PowerShell_profile.ps1

@@ -2,16 +2,32 @@ $CurrentDir = if ($PSScriptRoot) { $PSScriptRoot } else { Split-Path -Parent $PR
 $ProfileDir = Join-Path -Path $CurrentDir -ChildPath "Profile"
 
 if (Test-Path -Path $ProfileDir) {
-    $ProfileScripts = Get-ChildItem -Path $ProfileDir -Filter "*.ps1" | Sort-Object Name
-    
-    foreach ($Script in $ProfileScripts) {
-        try {
-            . $Script.FullName
+    $mutexName = "Global\PowerShellProfileInit"
+    $mutex = [System.Threading.Mutex]::new($false, $mutexName)
+    $acquired = $false
+
+    try {
+        $acquired = $mutex.WaitOne(10000)
+        if ($acquired) {
+            $ProfileScripts = Get-ChildItem -Path $ProfileDir -Filter "*.ps1" | Sort-Object Name
+            foreach ($Script in $ProfileScripts) {
+                try {
+                    . $Script.FullName
+                }
+                catch {
+                    Write-Warning "Failed to load profile module: $($Script.Name). Error: $($_.Exception.Message)"
+                }
+            }
         }
-        catch {
-            Write-Warning "Failed to load profile module: $($Script.Name). Error: $($_.Exception.Message)"
+        else {
+            Write-Warning "Profile initialization lock timed out — another terminal may be loading."
         }
     }
-} else {
+    finally {
+        if ($acquired) { $mutex.ReleaseMutex() }
+        $mutex.Dispose()
+    }
+}
+else {
     Write-Warning "Profile directory not found at: $ProfileDir"
 }