fix: update test paths for new DefaultBaseDir and improve path handling

Author: satococoa

cmd/wtp/remove_test.go

@@ -374,7 +374,7 @@ func TestRemoveCommand_WorktreeNotFound_ShowsConsistentNames(t *testing.T) {
 		results: []command.Result{
 			{
 				Output: "worktree /repo\nHEAD abc123\nbranch refs/heads/main\n\n" +
-					"worktree /repo/.worktrees/feat/hogehoge\nHEAD def456\nbranch refs/heads/feat/hogehoge\n\n",
+					"worktree /somewhere/else/feat/hogehoge\nHEAD def456\nbranch refs/heads/feat/hogehoge\n\n",
 				Error: nil,
 			},
 		},
@@ -392,7 +392,7 @@ func TestRemoveCommand_WorktreeNotFound_ShowsConsistentNames(t *testing.T) {
 }
 
 func TestRemoveCommand_FailsWhenRemovingCurrentWorktree(t *testing.T) {
-	targetPath := "/worktrees/feature/foo"
+	targetPath := "/worktrees/repo/feature/foo"
 	mockWorktreeList := fmt.Sprintf(
 		"worktree /repo\nHEAD abc123\nbranch refs/heads/main\n\n"+
 			"worktree %s\nHEAD def456\nbranch refs/heads/feature/foo\n\n",

cmd/wtp/worktree_managed.go

@@ -26,14 +26,23 @@ func isWorktreeManagedCommon(worktreePath string, cfg *config.Config, mainRepoPa
 	baseDir := cfg.ResolveWorktreePath(mainRepoPath, "")
 	baseDir = strings.TrimSuffix(baseDir, string(filepath.Separator))
 
-	absWorktreePath, err := filepath.Abs(worktreePath)
-	if err != nil {
-		return false
+	// Convert to absolute paths only if they're not already absolute
+	absWorktreePath := worktreePath
+	if !filepath.IsAbs(worktreePath) {
+		var err error
+		absWorktreePath, err = filepath.Abs(worktreePath)
+		if err != nil {
+			return false
+		}
 	}
 
-	absBaseDir, err := filepath.Abs(baseDir)
-	if err != nil {
-		return false
+	absBaseDir := baseDir
+	if !filepath.IsAbs(baseDir) {
+		var err error
+		absBaseDir, err = filepath.Abs(baseDir)
+		if err != nil {
+			return false
+		}
 	}
 
 	relPath, err := filepath.Rel(absBaseDir, absWorktreePath)