Add Verbose log level between Info and Debug

Implemented full log level hierarchy: Fatal, Error, Warn, Info, Verbose, Debug.
- Verbose level (-v) shows detailed operations like file changes (M/A/D)
- Debug level (-vv) shows low-level tracing with caller info
- Quiet mode (-q) sets level to Error, suppressing Info messages
- Banner and summary output now use log levels for filtering

internal/cli/check.go

@@ -140,7 +140,6 @@ func (mfa *CLIApp) checkManifestOperation(ctx *cli.Context) error {
 		<-extraDone
 	}
 
-	if !ctx.Bool("quiet") {
 	elapsed := time.Since(mfa.startupTime).Seconds()
 	rate := float64(chk.TotalBytes()) / elapsed / 1e6
 	if failures == 0 {
@@ -148,7 +147,6 @@ func (mfa *CLIApp) checkManifestOperation(ctx *cli.Context) error {
 	} else {
 		log.Infof("checked %d files (%.1f MB) in %.1fs (%.1f MB/s): %d failed", chk.FileCount(), float64(chk.TotalBytes())/1e6, elapsed, rate, failures)
 	}
-	}
 
 	if failures > 0 {
 		mfa.exitCode = 1

internal/cli/entry_test.go

@@ -173,10 +173,10 @@ func TestBannerOutput(t *testing.T) {
 	exitCode := RunWithOptions(opts)
 	assert.Equal(t, 0, exitCode)
 
-	// Banner ASCII art should be in stdout
-	stdout := opts.Stdout.(*bytes.Buffer).String()
-	assert.Contains(t, stdout, "___")
-	assert.Contains(t, stdout, "\\")
+	// Banner ASCII art should be in stderr (via log.Info)
+	stderr := opts.Stderr.(*bytes.Buffer).String()
+	assert.Contains(t, stderr, "___")
+	assert.Contains(t, stderr, "\\")
 }
 
 func TestUnknownCommand(t *testing.T) {

internal/cli/fetch.go

@@ -125,8 +125,7 @@ func (mfa *CLIApp) fetchManifestOperation(ctx *cli.Context) error {
 	close(progress)
 	<-done
 
-	// Print summary if not quiet
-	if !ctx.Bool("quiet") {
+	// Print summary
 	elapsed := time.Since(startTime)
 	avgBytesPerSec := float64(totalBytes) / elapsed.Seconds()
 	avgRate := formatBitrate(avgBytesPerSec * 8)
@@ -135,7 +134,6 @@ func (mfa *CLIApp) fetchManifestOperation(ctx *cli.Context) error {
 		float64(totalBytes)/1e6,
 		elapsed.Seconds(),
 		avgRate)
-	}
 
 	return nil
 }

internal/cli/freshen.go

@@ -149,7 +149,7 @@ func (mfa *CLIApp) freshenManifestOperation(ctx *cli.Context) error {
 			existingMtime := time.Unix(existing.Mtime.Seconds, int64(existing.Mtime.Nanos))
 			if existing.Size != info.Size() || !existingMtime.Equal(info.ModTime()) {
 				changed++
-				log.Debugf("M %s", relPath)
+				log.Verbosef("M %s", relPath)
 				entries = append(entries, &freshenEntry{
 					path:      relPath,
 					size:      info.Size(),
@@ -170,7 +170,7 @@ func (mfa *CLIApp) freshenManifestOperation(ctx *cli.Context) error {
 			delete(existingByPath, relPath)
 		} else {
 			added++
-			log.Debugf("A %s", relPath)
+			log.Verbosef("A %s", relPath)
 			entries = append(entries, &freshenEntry{
 				path:      relPath,
 				size:      info.Size(),
@@ -198,7 +198,7 @@ func (mfa *CLIApp) freshenManifestOperation(ctx *cli.Context) error {
 	// Remaining entries in existingByPath are removed files
 	removed = int64(len(existingByPath))
 	for path := range existingByPath {
-		log.Debugf("D %s", path)
+		log.Verbosef("D %s", path)
 	}
 
 	scanDuration := time.Since(startScan)
@@ -305,7 +305,6 @@ func (mfa *CLIApp) freshenManifestOperation(ctx *cli.Context) error {
 	}
 
 	// Print summary
-	if !ctx.Bool("quiet") {
 	totalDuration := time.Since(mfa.startupTime)
 	var hashRate float64
 	if hashedBytes > 0 {
@@ -319,7 +318,6 @@ func (mfa *CLIApp) freshenManifestOperation(ctx *cli.Context) error {
 			float64(hashedBytes)/1e6, totalDuration.Seconds(), hashRate)
 	}
 	log.Infof("wrote %d files to %s", len(entries), manifestPath)
-	}
 
 	return nil
 }

internal/cli/gen.go

@@ -115,11 +115,9 @@ func (mfa *CLIApp) generateManifestOperation(ctx *cli.Context) error {
 		return fmt.Errorf("failed to generate manifest: %w", err)
 	}
 
-	if !ctx.Bool("quiet") {
 	elapsed := time.Since(mfa.startupTime).Seconds()
 	rate := float64(s.TotalBytes()) / elapsed / 1e6
 	log.Infof("wrote %d files (%.1f MB) to %s in %.1fs (%.1f MB/s)", s.FileCount(), float64(s.TotalBytes())/1e6, outputPath, elapsed, rate)
-	}
 
 	return nil
 }

internal/cli/mfer.go

@@ -41,7 +41,7 @@ const banner = `
     \__\/         \__\/       \__\/         \__\/`
 
 func (mfa *CLIApp) printBanner() {
-	_, _ = fmt.Fprintln(mfa.Stdout, banner)
+	log.Info(banner)
 }
 
 // VersionString returns the version and git revision formatted for display.
@@ -49,10 +49,12 @@ func (mfa *CLIApp) VersionString() string {
 	return fmt.Sprintf("%s (%s)", mfa.version, mfa.gitrev)
 }
 
-func (mfa *CLIApp) setVerbosity(v int) {
+func (mfa *CLIApp) setVerbosity(quiet bool, v int) {
 	_, present := os.LookupEnv("MFER_DEBUG")
 	if present {
 		log.EnableDebugLogging()
+	} else if quiet {
+		log.SetLevel(log.ErrorLevel)
 	} else {
 		log.SetLevelFromVerbosity(v)
 	}
@@ -98,10 +100,8 @@ func (mfa *CLIApp) run(args []string) {
 				Aliases: []string{"gen"},
 				Usage:   "Generate manifest file",
 				Action: func(c *cli.Context) error {
-					if !c.Bool("quiet") {
+					mfa.setVerbosity(c.Bool("quiet"), verbosity)
 					mfa.printBanner()
-					}
-					mfa.setVerbosity(verbosity)
 					return mfa.generateManifestOperation(c)
 				},
 				Flags: []cli.Flag{
@@ -138,10 +138,8 @@ func (mfa *CLIApp) run(args []string) {
 				Usage:     "Validate files using manifest file",
 				ArgsUsage: "[manifest file]",
 				Action: func(c *cli.Context) error {
-					if !c.Bool("quiet") {
+					mfa.setVerbosity(c.Bool("quiet"), verbosity)
 					mfa.printBanner()
-					}
-					mfa.setVerbosity(verbosity)
 					return mfa.checkManifestOperation(c)
 				},
 				Flags: []cli.Flag{
@@ -167,10 +165,8 @@ func (mfa *CLIApp) run(args []string) {
 				Usage:     "Update manifest with changed, new, and removed files",
 				ArgsUsage: "[manifest file]",
 				Action: func(c *cli.Context) error {
-					if !c.Bool("quiet") {
+					mfa.setVerbosity(c.Bool("quiet"), verbosity)
 					mfa.printBanner()
-					}
-					mfa.setVerbosity(verbosity)
 					return mfa.freshenManifestOperation(c)
 				},
 				Flags: []cli.Flag{
@@ -209,10 +205,8 @@ func (mfa *CLIApp) run(args []string) {
 				Name:  "fetch",
 				Usage: "fetch manifest and referenced files",
 				Action: func(c *cli.Context) error {
-					if !c.Bool("quiet") {
+					mfa.setVerbosity(c.Bool("quiet"), verbosity)
 					mfa.printBanner()
-					}
-					mfa.setVerbosity(verbosity)
 					return mfa.fetchManifestOperation(c)
 				},
 			},

internal/log/log.go

@@ -13,16 +13,53 @@ import (
 	"github.com/pterm/pterm"
 )
 
-// Level is an alias for apex/log.Level for use by callers without importing apex/log.
-type Level = log.Level
+// Level represents log severity levels.
+// Lower values are more verbose.
+type Level int
+
+const (
+	// DebugLevel is for low-level tracing and structure inspection
+	DebugLevel Level = iota
+	// VerboseLevel is for detailed operational info (file listings, etc)
+	VerboseLevel
+	// InfoLevel is for operational summaries (default)
+	InfoLevel
+	// WarnLevel is for warnings
+	WarnLevel
+	// ErrorLevel is for errors
+	ErrorLevel
+	// FatalLevel is for fatal errors
+	FatalLevel
+)
+
+func (l Level) String() string {
+	switch l {
+	case DebugLevel:
+		return "debug"
+	case VerboseLevel:
+		return "verbose"
+	case InfoLevel:
+		return "info"
+	case WarnLevel:
+		return "warn"
+	case ErrorLevel:
+		return "error"
+	case FatalLevel:
+		return "fatal"
+	default:
+		return "unknown"
+	}
+}
 
 var (
-	// mu protects the output writers
+	// mu protects the output writers and level
 	mu sync.RWMutex
 	// stdout is the writer for progress output
 	stdout io.Writer = os.Stdout
 	// stderr is the writer for log output
 	stderr io.Writer = os.Stderr
+	// currentLevel is our log level (includes Verbose)
+	currentLevel Level = InfoLevel
 )
 
 // SetOutput configures the output writers for the log package.
@@ -67,31 +104,105 @@ func Init() {
 	w := stderr
 	mu.RUnlock()
 	log.SetHandler(acli.New(w))
-	log.SetLevel(log.InfoLevel)
+	log.SetLevel(log.DebugLevel) // Let apex/log pass everything; we filter ourselves
+}
+
+// isEnabled returns true if messages at the given level should be logged.
+func isEnabled(l Level) bool {
+	mu.RLock()
+	defer mu.RUnlock()
+	return l >= currentLevel
+}
+
+// Fatalf logs a formatted message at fatal level.
+func Fatalf(format string, args ...interface{}) {
+	if isEnabled(FatalLevel) {
+		log.Fatalf(format, args...)
+	}
+}
+
+// Fatal logs a message at fatal level.
+func Fatal(arg string) {
+	if isEnabled(FatalLevel) {
+		log.Fatal(arg)
+	}
+}
+
+// Errorf logs a formatted message at error level.
+func Errorf(format string, args ...interface{}) {
+	if isEnabled(ErrorLevel) {
+		log.Errorf(format, args...)
+	}
+}
+
+// Error logs a message at error level.
+func Error(arg string) {
+	if isEnabled(ErrorLevel) {
+		log.Error(arg)
+	}
+}
+
+// Warnf logs a formatted message at warn level.
+func Warnf(format string, args ...interface{}) {
+	if isEnabled(WarnLevel) {
+		log.Warnf(format, args...)
+	}
+}
+
+// Warn logs a message at warn level.
+func Warn(arg string) {
+	if isEnabled(WarnLevel) {
+		log.Warn(arg)
+	}
 }
 
 // Infof logs a formatted message at info level.
 func Infof(format string, args ...interface{}) {
+	if isEnabled(InfoLevel) {
 		log.Infof(format, args...)
+	}
 }
 
 // Info logs a message at info level.
 func Info(arg string) {
+	if isEnabled(InfoLevel) {
 		log.Info(arg)
+	}
+}
+
+// Verbosef logs a formatted message at verbose level.
+func Verbosef(format string, args ...interface{}) {
+	if isEnabled(VerboseLevel) {
+		log.Infof(format, args...)
+	}
+}
+
+// Verbose logs a message at verbose level.
+func Verbose(arg string) {
+	if isEnabled(VerboseLevel) {
+		log.Info(arg)
+	}
 }
 
 // Debugf logs a formatted message at debug level with caller location.
 func Debugf(format string, args ...interface{}) {
+	if isEnabled(DebugLevel) {
 		DebugReal(fmt.Sprintf(format, args...), 2)
+	}
 }
 
 // Debug logs a message at debug level with caller location.
 func Debug(arg string) {
+	if isEnabled(DebugLevel) {
 		DebugReal(arg, 2)
+	}
 }
 
 // DebugReal logs at debug level with caller info from the specified stack depth.
 func DebugReal(arg string, cs int) {
+	if !isEnabled(DebugLevel) {
+		return
+	}
 	_, callerFile, callerLine, ok := runtime.Caller(cs)
 	if !ok {
 		return
@@ -102,25 +213,27 @@ func DebugReal(arg string, cs int) {
 
 // Dump logs a spew dump of the arguments at debug level.
 func Dump(args ...interface{}) {
+	if isEnabled(DebugLevel) {
 		DebugReal(spew.Sdump(args...), 2)
+	}
 }
 
 // EnableDebugLogging sets the log level to debug.
 func EnableDebugLogging() {
-	SetLevel(log.DebugLevel)
+	SetLevel(DebugLevel)
 }
 
 // VerbosityStepsToLogLevel converts a -v count to a log level.
-// 0 returns InfoLevel, 1+ returns DebugLevel.
-func VerbosityStepsToLogLevel(l int) log.Level {
+// 0 returns InfoLevel, 1 returns VerboseLevel, 2+ returns DebugLevel.
+func VerbosityStepsToLogLevel(l int) Level {
 	switch l {
 	case 0:
-		return log.InfoLevel
+		return InfoLevel
 	case 1:
-		return log.DebugLevel
+		return VerboseLevel
+	default:
+		return DebugLevel
 	}
-	// -vv or more
-	return log.DebugLevel
 }
 
 // SetLevelFromVerbosity sets the log level based on -v flag count.
@@ -129,26 +242,22 @@ func SetLevelFromVerbosity(l int) {
 }
 
 // SetLevel sets the global log level.
-func SetLevel(arg log.Level) {
-	log.SetLevel(arg)
-}
-
-// GetLogger returns the underlying apex/log Logger.
-func GetLogger() *log.Logger {
-	if logger, ok := log.Log.(*log.Logger); ok {
-		return logger
-	}
-	panic("unable to get logger")
+func SetLevel(l Level) {
+	mu.Lock()
+	defer mu.Unlock()
+	currentLevel = l
 }
 
 // GetLevel returns the current log level.
-func GetLevel() log.Level {
-	return GetLogger().Level
+func GetLevel() Level {
+	mu.RLock()
+	defer mu.RUnlock()
+	return currentLevel
 }
 
 // WithError returns a log entry with the error attached.
 func WithError(e error) *log.Entry {
-	return GetLogger().WithError(e)
+	return log.Log.WithError(e)
 }
 
 // Progressf prints a progress message that overwrites the current line.