feat: add SyncAll periodic sync pipeline and wire Navidrome client into App

cmd/naviwatcher/main_test.go

@@ -12,6 +12,7 @@ import (
 
 	"naviwatcher/internal/config"
 	"naviwatcher/internal/database"
+	"naviwatcher/internal/navidrome"
 )
 
 func TestAppRun_ScanLogsMissingReleases(t *testing.T) {
@@ -135,6 +136,13 @@ func TestNewApp_CreatesMusicBrainzClient(t *testing.T) {
 		},
 	}
 
+	// Inject an unauthenticated Navidrome client so the test needs no live server.
+	prevFactory := navidromeClientFactory
+	navidromeClientFactory = func(c config.NavidromeConfig) (*navidrome.NavidromeClient, error) {
+		return navidrome.NewClientUnauthenticated(c), nil
+	}
+	defer func() { navidromeClientFactory = prevFactory }()
+
 	ctx := context.Background()
 	app, err := NewApp(ctx, cfg, ":memory:")
 	if err != nil {
@@ -145,6 +153,9 @@ func TestNewApp_CreatesMusicBrainzClient(t *testing.T) {
 	if app.mbClient == nil {
 		t.Fatal("expected MusicBrainz client to be initialized, got nil")
 	}
+	if app.ndClient == nil {
+		t.Fatal("expected Navidrome client to be initialized, got nil")
+	}
 	if app.db == nil {
 		t.Fatal("expected database to be initialized, got nil")
 	}
@@ -170,6 +181,12 @@ func TestNewApp_GracefulShutdown(t *testing.T) {
 		},
 	}
 
+	prevFactory := navidromeClientFactory
+	navidromeClientFactory = func(c config.NavidromeConfig) (*navidrome.NavidromeClient, error) {
+		return navidrome.NewClientUnauthenticated(c), nil
+	}
+	defer func() { navidromeClientFactory = prevFactory }()
+
 	ctx := context.Background()
 	app, err := NewApp(ctx, cfg, ":memory:")
 	if err != nil {
@@ -197,6 +214,12 @@ func TestAppRun_GracefulShutdown(t *testing.T) {
 		},
 	}
 
+	prevFactory := navidromeClientFactory
+	navidromeClientFactory = func(c config.NavidromeConfig) (*navidrome.NavidromeClient, error) {
+		return navidrome.NewClientUnauthenticated(c), nil
+	}
+	defer func() { navidromeClientFactory = prevFactory }()
+
 	ctx, cancel := context.WithCancel(context.Background())
 
 	app, err := NewApp(ctx, cfg, ":memory:")