Добавил выбор из кандидатов, если LLM не уверена в раскладке

internal/store/recognition_test.go

@@ -159,6 +159,67 @@ func TestFileLinks_BatchLifecycle(t *testing.T) {
 	}
 }
 
+func TestCandidates_Lifecycle(t *testing.T) {
+	st := newTestStore(t)
+	ctx := context.Background()
+	dl := seedDownload(t, st)
+	recID, err := st.CreateRecognition(ctx, &Recognition{DownloadID: dl}, nil)
+	if err != nil {
+		t.Fatalf("create recognition: %v", err)
+	}
+
+	cands := []MetadataCandidate{
+		{RecognitionID: recID, Provider: "tvdb", ProviderID: "269613",
+			Title: NullString("Fargo"), Year: sql.NullInt64{Int64: 2014, Valid: true}},
+		{RecognitionID: recID, Provider: "tmdb", ProviderID: "60622",
+			Title: NullString("Fargo")},
+	}
+	if err := st.CreateCandidates(ctx, cands); err != nil {
+		t.Fatalf("create candidates: %v", err)
+	}
+
+	got, err := st.ListCandidatesByRecognition(ctx, recID)
+	if err != nil {
+		t.Fatalf("list: %v", err)
+	}
+	if len(got) != 2 || got[0].Provider != "tvdb" || got[0].ProviderID != "269613" {
+		t.Fatalf("candidates = %+v", got)
+	}
+
+	chosenID := got[0].ID
+	if err := st.SetCandidateChosen(ctx, recID, chosenID); err != nil {
+		t.Fatalf("set chosen: %v", err)
+	}
+	got, _ = st.ListCandidatesByRecognition(ctx, recID)
+	for _, c := range got {
+		want := c.ID == chosenID
+		if c.Chosen != want {
+			t.Errorf("candidate %d chosen = %v, want %v", c.ID, c.Chosen, want)
+		}
+	}
+
+	// GetCandidate + переотметка.
+	single, err := st.GetCandidate(ctx, got[1].ID)
+	if err != nil || single == nil || single.Provider != "tmdb" {
+		t.Fatalf("get candidate = %+v, %v", single, err)
+	}
+	if err := st.SetCandidateChosen(ctx, recID, got[1].ID); err != nil {
+		t.Fatal(err)
+	}
+	got, _ = st.ListCandidatesByRecognition(ctx, recID)
+	if got[0].Chosen || !got[1].Chosen {
+		t.Errorf("re-choose failed: %+v", got)
+	}
+}
+
+func TestGetCandidate_None(t *testing.T) {
+	st := newTestStore(t)
+	c, err := st.GetCandidate(context.Background(), 999)
+	if err != nil || c != nil {
+		t.Errorf("want nil,nil; got %+v, %v", c, err)
+	}
+}
+
 func TestLatestBatchID_None(t *testing.T) {
 	st := newTestStore(t)
 	dl := seedDownload(t, st)