Fix Windows test failures

- Add sanitizeTestName() to handle Windows-invalid path characters (colons)
- Skip Unix executable permission checks on Windows (Windows uses file extensions)
- TestBuildConstraintAnalysis: Use sanitized directory names
- TestHookManager_InstallHook: Only check executable bit on Unix platforms

All tests now pass on Windows, macOS, and Linux.

Author: ChronosMasterOfAllTime

internal/sbom/enhancer_test.go

@@ -11,6 +11,22 @@ import (
 	"github.com/go-nv/goenv/internal/manager"
 )
 
+// sanitizeTestName replaces characters invalid in Windows paths
+func sanitizeTestName(name string) string {
+	replacer := strings.NewReplacer(
+		":", "_",
+		"<", "_",
+		">", "_",
+		"\"", "_",
+		"/", "_",
+		"\\", "_",
+		"|", "_",
+		"?", "_",
+		"*", "_",
+	)
+	return replacer.Replace(name)
+}
+
 func TestComputeSBOMDigest(t *testing.T) {
 	tempDir := t.TempDir()
 	sbomPath := filepath.Join(tempDir, "sbom.json")
@@ -268,7 +284,7 @@ func TestBuildConstraintAnalysis(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			testDir := filepath.Join(tempDir, tt.name)
+			testDir := filepath.Join(tempDir, sanitizeTestName(tt.name))
 			os.MkdirAll(testDir, 0755)
 
 			if err := os.WriteFile(filepath.Join(testDir, tt.filename), []byte(tt.content), 0644); err != nil {

internal/sbom/hooks_test.go

@@ -4,6 +4,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"testing"
 )
@@ -128,14 +129,16 @@ func TestHookManager_InstallHook(t *testing.T) {
 					return
 				}
 
-				// Verify hook is executable
-				info, err := os.Stat(hookPath)
-				if err != nil {
-					t.Errorf("failed to stat hook: %v", err)
-					return
-				}
-				if info.Mode()&0111 == 0 {
-					t.Error("hook is not executable")
+				// Verify hook is executable (Unix only - Windows uses extensions)
+				if runtime.GOOS != "windows" {
+					info, err := os.Stat(hookPath)
+					if err != nil {
+						t.Errorf("failed to stat hook: %v", err)
+						return
+					}
+					if info.Mode()&0111 == 0 {
+						t.Error("hook is not executable")
+					}
 				}
 
 				// Verify hook content