chore(go): inject stdin and pass rc force explicitly

internal/homesick/core/core.go

@@ -21,13 +21,15 @@ type App struct {
 	Stdin    io.Reader
 	Stdout   io.Writer
 	Stderr   io.Writer
-	Verbose  bool
 	Force    bool
 	Quiet    bool
 	Pretend  bool
 }
 
-func New(stdout io.Writer, stderr io.Writer) (*App, error) {
+func NewApp(stdin io.Reader, stdout io.Writer, stderr io.Writer) (*App, error) {
+	if stdin == nil {
+		return nil, errors.New("stdin reader cannot be nil")
+	}
 	if stdout == nil {
 		return nil, errors.New("stdout writer cannot be nil")
 	}
@@ -43,7 +45,7 @@ func New(stdout io.Writer, stderr io.Writer) (*App, error) {
 	return &App{
 		HomeDir:  home,
 		ReposDir: filepath.Join(home, ".homesick", "repos"),
-		Stdin:    os.Stdin,
+		Stdin:    stdin,
 		Stdout:   stdout,
 		Stderr:   stderr,
 	}, nil
@@ -845,7 +847,7 @@ func gitOutput(dir string, args ...string) (string, error) {
 // If a .homesickrc file exists in the castle root and no parity.rb wrapper
 // already exists in .homesick.d, a Ruby wrapper script named parity.rb is
 // written there before execution so that it sorts first.
-func (a *App) Rc(castle string) error {
+func (a *App) Rc(castle string, force bool) error {
 	castleRoot := filepath.Join(a.ReposDir, castle)
 	if _, err := os.Stat(castleRoot); err != nil {
 		if errors.Is(err, os.ErrNotExist) {
@@ -857,7 +859,7 @@ func (a *App) Rc(castle string) error {
 	homesickD := filepath.Join(castleRoot, ".homesick.d")
 	homesickRc := filepath.Join(castleRoot, ".homesickrc")
 
-	if _, err := os.Stat(homesickRc); err == nil && !a.Force {
+	if _, err := os.Stat(homesickRc); err == nil && !force {
 		return errors.New("refusing to run legacy .homesickrc without --force")
 	}