style: apply gofmt across Go sources

Repo-wide gofmt sweep: const-block alignment, doc-comment spacing,
statement-after-brace fix in media.go, trailing blank lines. No
semantic changes — whitespace-insensitive diff is empty for every
file in this commit.

cmd/server/tests/sync_integration_test.go

@@ -95,7 +95,7 @@ func createSyncTestMedia(t *testing.T, db *database.Queries, libraryID pgtype.UU
 	media, err := db.CreateMediaItem(ctx, database.CreateMediaItemParams{
 		LibraryID: libraryID,
 		Title:     "Sync Test Book",
-		Authors:  []string{"Test Author"},
+		Authors:   []string{"Test Author"},
 		FilePath:  "/tmp/test.epub",
 		FileSize:  pgtype.Int8{Int64: 1024, Valid: true},
 		MimeType:  pgtype.Text{String: "application/epub+zip", Valid: true},
@@ -235,7 +235,7 @@ func TestSyncConflictDetection(t *testing.T) {
 	// Verify both exist (conflict detection would happen during processing)
 	items, err := db.ListPendingSyncQueueItems(ctx, database.ListPendingSyncQueueItemsParams{
 		DeviceID: deviceID,
-		RowLimit:    int32(10),
+		RowLimit: int32(10),
 	})
 	require.NoError(t, err)
 	assert.Equal(t, 1, len(items), "Should have one queue item")