fix library deletion and strm path handling

internal/service/strm_svc_test.go

@@ -232,6 +232,21 @@ func TestSTRMLibraryOutputSubdirUsesLibraryCategoryPath(t *testing.T) {
 	}
 }
 
+func TestSTRMLibrarySpecificOutputDirStripsPreviousLibraryCategory(t *testing.T) {
+	base := filepath.Join(t.TempDir(), "strm", "电影", "演唱会")
+	lib := model.Library{
+		Name: "国产剧",
+		Path: BuildCloudLibraryPath("openlist", "/电视剧/国产剧", "/电视剧/国产剧"),
+		Type: "tv",
+	}
+
+	got := strmLibrarySpecificOutputDir(base, &lib)
+	want := filepath.Join(filepath.Dir(filepath.Dir(base)), "电视剧", "国产剧")
+	if got != want {
+		t.Fatalf("strmLibrarySpecificOutputDir() = %q, want %q", got, want)
+	}
+}
+
 func TestGenerateSTRMForLibraryUsesCategoryDefaultOutputDir(t *testing.T) {
 	db := newServiceTestDB(t, &model.Library{}, &model.Media{}, &model.STRMRecord{}, &model.Setting{})
 	repos := repository.New(db)