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/blobgen/reader.go

@@ -53,12 +53,14 @@ func NewReader(r io.Reader, identity age.Identity) (*Reader, error) {
 func (r *Reader) Read(p []byte) (n int, err error) {
 	n, err = r.teeReader.Read(p)
 	r.bytesRead += int64(n)
+
 	return n, err
 }
 
 // Close closes the decompressor
 func (r *Reader) Close() error {
 	r.decompressor.Close()
+
 	return nil
 }