fix: correct handling of ./ scan target prefix (#93)

When the scan target is specified with a `./` prefix, we currently
incorrectly build relative file paths within the project directory.

Also ensure that we correctly handle the cases where a trailing
slash is either present or absent, on a directory path specified
as scan target.

pkg/commands/process/balancer/filelist/filelist.go

@@ -2,6 +2,7 @@ package filelist
 
 import (
 	"io/fs"
+	"os"
 	"path/filepath"
 	"strings"
 
@@ -16,6 +17,19 @@ import (
 func Discover(projectPath string, config settings.Config) ([]work.File, error) {
 	var files []work.File
 
+	haveDir, statErr := isDir(projectPath)
+	if statErr != nil {
+		return files, statErr
+	}
+
+	if haveDir {
+		projectPath = strings.TrimPrefix(projectPath, "./")
+		projectPath = strings.TrimSuffix(projectPath, "/")
+		if projectPath != "." {
+			projectPath += "/"
+		}
+	}
+
 	ignore := fileignore.New(projectPath, config)
 
 	err := filepath.WalkDir(projectPath, func(filePath string, d fs.DirEntry, err error) error {
@@ -31,6 +45,7 @@ func Discover(projectPath string, config settings.Config) ([]work.File, error) {
 		}
 
 		relativePath := strings.TrimPrefix(filePath, projectPath)
+		relativePath = "/" + relativePath
 
 		if ignore.Ignore(projectPath, filePath, d) {
 			log.Debug().Msgf("skipping file due to file skip rules: %s", relativePath)
@@ -50,3 +65,12 @@ func Discover(projectPath string, config settings.Config) ([]work.File, error) {
 
 	return files, err
 }
+
+func isDir(path string) (bool, error) {
+	fileInfo, err := os.Stat(path)
+	if err != nil {
+		return false, err
+	}
+
+	return fileInfo.IsDir(), nil
+}