fix: normalize path separators for Windows compatibility

Use forward slashes in DOT graph output so list command produces
portable, consistent output across platforms. Convert gitRoot to
OS-native separators so boundary checks in dependent discovery
work correctly on Windows (git returns forward slashes, but
filesystem walks return backslashes).

Author: diofeher

internal/cli/commands/list/list.go

@@ -507,10 +507,12 @@ func renderDot(opts *Options, components dag.ListedComponents) error {
 			style = "[color=red]"
 		}
 
-		fmt.Fprintf(&buf, "\t\"%s\" %s;\n", component.Path, style)
+		componentPath := filepath.ToSlash(component.Path)
+
+		fmt.Fprintf(&buf, "\t\"%s\" %s;\n", componentPath, style)
 
 		for _, dep := range component.Dependencies {
-			fmt.Fprintf(&buf, "\t\"%s\" -> \"%s\";\n", component.Path, dep.Path)
+			fmt.Fprintf(&buf, "\t\"%s\" -> \"%s\";\n", componentPath, filepath.ToSlash(dep.Path))
 		}
 	}
 

internal/discovery/discovery.go

@@ -47,7 +47,7 @@ func (d *Discovery) Discover(
 	if d.classifier.HasGraphFilters() {
 		if d.classifier.HasDependentFilters() && d.gitRoot == "" {
 			if gitRootPath, gitErr := shell.GitTopLevelDir(ctx, l, opts.Env, d.workingDir); gitErr == nil {
-				d.gitRoot = gitRootPath
+				d.gitRoot = filepath.FromSlash(gitRootPath)
 				l.Debugf("Set gitRoot for dependent discovery: %s", d.gitRoot)
 			}
 		}