Apply mechanical lint fixes for golangci-lint v2.12.2 rollout

Auto-remediate style-only findings (wsl_v5, nlreturn, noinlineerr,
modernize, intrange, perfsprint, usetesting, unconvert, errorlint,
gocritic, testifylint) and rename printf-style helpers to f-suffixed
names (goprintffuncname): ui.Writer message methods, cli.ReportErrorf,
database.Fatalf, vaultik stdoutf.

internal/database/uploads.go

@@ -53,6 +53,7 @@ func (r *UploadRepository) GetByBlobHash(ctx context.Context, blobHash string) (
 	`
 
 	var upload Upload
+
 	err := r.conn.QueryRowContext(ctx, query, blobHash).Scan(
 		&upload.BlobHash,
 		&upload.UploadedAt,
@@ -63,6 +64,7 @@ func (r *UploadRepository) GetByBlobHash(ctx context.Context, blobHash string) (
 	if err == sql.ErrNoRows {
 		return nil, nil
 	}
+
 	if err != nil {
 		return nil, err
 	}
@@ -84,17 +86,22 @@ func (r *UploadRepository) GetRecentUploads(ctx context.Context, limit int) ([]*
 		return nil, err
 	}
 	defer func() {
-		if err := rows.Close(); err != nil {
+		err := rows.Close()
+		if err != nil {
 			log.Error("failed to close rows", "error", err)
 		}
 	}()
 
 	var uploads []*Upload
+
 	for rows.Next() {
 		var upload Upload
-		if err := rows.Scan(&upload.BlobHash, &upload.UploadedAt, &upload.Size, &upload.DurationMs); err != nil {
+
+		err := rows.Scan(&upload.BlobHash, &upload.UploadedAt, &upload.Size, &upload.DurationMs)
+		if err != nil {
 			return nil, err
 		}
+
 		uploads = append(uploads, &upload)
 	}
 
@@ -115,6 +122,7 @@ func (r *UploadRepository) GetUploadStats(ctx context.Context, since time.Time)
 	`
 
 	var stats UploadStats
+
 	err := r.conn.QueryRowContext(ctx, query, since).Scan(
 		&stats.Count,
 		&stats.TotalSize,
@@ -138,10 +146,13 @@ type UploadStats struct {
 // GetCountBySnapshot returns the count of uploads for a specific snapshot
 func (r *UploadRepository) GetCountBySnapshot(ctx context.Context, snapshotID string) (int64, error) {
 	query := `SELECT COUNT(*) FROM uploads WHERE snapshot_id = ?`
+
 	var count int64
+
 	err := r.conn.QueryRowContext(ctx, query, snapshotID).Scan(&count)
 	if err != nil {
 		return 0, err
 	}
+
 	return count, nil
 }