feat: add output package with Formatter interface (#537)

* docs: add RFC-004 for CLI (cobra) and output design
* feat: add output package with Formatter interface and BrowserData.Each
* fix: golangci config array syntax + add output package tests
* refactor: encapsulated Output as Writer, collect-then-write pattern
* refactor: unified row type with reflection-based CSV/JSON output
* fix: ProfileName empty guard, writeFile close error check, sync RFC-004

browser/chromium/chromium_new.go

@@ -14,7 +14,6 @@ import (
 // Browser represents a single Chromium profile ready for extraction.
 type Browser struct {
 	cfg         types.BrowserConfig
-	name        string                               // display name: "Chrome-Default"
 	profileDir  string                               // absolute path to profile directory
 	sources     map[types.Category][]sourcePath      // Category → candidate paths (priority order)
 	extractors  map[types.Category]categoryExtractor // Category → custom extract function override
@@ -41,7 +40,6 @@ func NewBrowsers(cfg types.BrowserConfig) ([]*Browser, error) {
 		}
 		browsers = append(browsers, &Browser{
 			cfg:         cfg,
-			name:        cfg.Name + "-" + filepath.Base(profileDir),
 			profileDir:  profileDir,
 			sources:     sources,
 			extractors:  extractors,
@@ -51,8 +49,12 @@ func NewBrowsers(cfg types.BrowserConfig) ([]*Browser, error) {
 	return browsers, nil
 }
 
-func (b *Browser) Name() string {
-	return b.name
+func (b *Browser) BrowserName() string { return b.cfg.Name }
+func (b *Browser) ProfileName() string {
+	if b.profileDir == "" {
+		return ""
+	}
+	return filepath.Base(b.profileDir)
 }
 
 // Extract copies browser files to a temp directory, retrieves the master key,
@@ -68,7 +70,7 @@ func (b *Browser) Extract(categories []types.Category) (*types.BrowserData, erro
 
 	masterKey, err := b.getMasterKey(session)
 	if err != nil {
-		log.Debugf("get master key for %s: %v", b.name, err)
+		log.Debugf("get master key for %s: %v", b.BrowserName()+"/"+b.ProfileName(), err)
 	}
 
 	data := &types.BrowserData{}
@@ -134,7 +136,7 @@ func (b *Browser) getMasterKey(session *filemanager.Session) ([]byte, error) {
 func (b *Browser) extractCategory(data *types.BrowserData, cat types.Category, masterKey []byte, path string) {
 	if ext, ok := b.extractors[cat]; ok {
 		if err := ext.extract(masterKey, path, data); err != nil {
-			log.Debugf("extract %s for %s: %v", cat, b.name, err)
+			log.Debugf("extract %s for %s: %v", cat, b.BrowserName()+"/"+b.ProfileName(), err)
 		}
 		return
 	}
@@ -161,7 +163,7 @@ func (b *Browser) extractCategory(data *types.BrowserData, cat types.Category, m
 		data.SessionStorage, err = extractSessionStorage(path)
 	}
 	if err != nil {
-		log.Debugf("extract %s for %s: %v", cat, b.name, err)
+		log.Debugf("extract %s for %s: %v", cat, b.BrowserName()+"/"+b.ProfileName(), err)
 	}
 }
 

browser/chromium/chromium_new_test.go

@@ -369,7 +369,6 @@ func TestExtractCategory_DefaultFallback(t *testing.T) {
 	)
 
 	b := &Browser{
-		name:       "Test",
 		extractors: nil, // no custom extractors
 	}