refactor: split modules and harden scraping workflows

internal/service/local_metadata_apply_test.go

@@ -0,0 +1,38 @@
+package service
+
+import (
+	"testing"
+
+	"github.com/ShukeBta/MediaStationGo/internal/model"
+)
+
+func TestApplyLocalMetadataPreservesPathHintAsPending(t *testing.T) {
+	media := &model.Media{Title: "原始标题", ScrapeStatus: "pending"}
+	applyLocalMetadata(media, &LocalMetadata{
+		Title:    "路径标题",
+		Year:     2026,
+		TMDbID:   12345,
+		PathHint: true,
+	})
+
+	if media.Title != "路径标题" || media.Year != 2026 || media.TMDbID != 12345 {
+		t.Fatalf("path hint metadata was not applied: %+v", media)
+	}
+	if media.ScrapeStatus != "pending" {
+		t.Fatalf("path hints alone must stay enrichable, got scrape_status=%q", media.ScrapeStatus)
+	}
+}
+
+func TestApplyLocalMetadataMarksNFOAndDescriptiveMetadataMatched(t *testing.T) {
+	nfoMedia := &model.Media{ScrapeStatus: "pending"}
+	applyLocalMetadata(nfoMedia, &LocalMetadata{HasNFO: true})
+	if nfoMedia.ScrapeStatus != "matched" {
+		t.Fatalf("NFO metadata should mark matched, got %q", nfoMedia.ScrapeStatus)
+	}
+
+	descriptiveMedia := &model.Media{ScrapeStatus: "pending"}
+	applyLocalMetadata(descriptiveMedia, &LocalMetadata{Overview: "剧情简介"})
+	if descriptiveMedia.ScrapeStatus != "matched" {
+		t.Fatalf("descriptive metadata should mark matched, got %q", descriptiveMedia.ScrapeStatus)
+	}
+}