refactor: improve progress bar logic and update display (#14)

* fix: Revise progress tracking mechanism

* chore: remove unused getDependencies func

* chore: removed unused property & add fetcher check

* Update pkg/wrapper/npm_base.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Sahil Bansal <bansalsahil315@gmail.com>

* refactor: make SetProgressTracker common for all fetchers

---------

Signed-off-by: Sahil Bansal <bansalsahil315@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

pkg/registry/npm_fetcher.go

@@ -5,9 +5,11 @@ import (
 	"encoding/json"
 	"fmt"
 	"sync"
+	"sync/atomic"
 	"time"
 
 	"github.com/safedep/dry/log"
+	"github.com/safedep/pmg/internal/ui"
 	"github.com/safedep/pmg/pkg/common/utils"
 	"github.com/safedep/pmg/pkg/models"
 )
@@ -17,6 +19,14 @@ type NpmFetcher struct {
 	*BaseFetcher
 }
 
+func (nf *NpmFetcher) incrementProgress() {
+	if nf.progressTracker != nil {
+		atomic.AddInt32(&nf.fetchedDeps, 1)
+		// Update progress message to show number of packages fetched
+		ui.SetPinnedMessageOnProgressWriter(fmt.Sprintf("Fetched %d packages", atomic.LoadInt32(&nf.fetchedDeps)))
+	}
+}
+
 // NewNpmFetcher creates a new NPM registry fetcher
 func NewNpmFetcher(timeout time.Duration) *NpmFetcher {
 	client := NewHttpRegistryClient(
@@ -92,6 +102,8 @@ func (nf *NpmFetcher) fetchDependenciesConcurrent(ctx context.Context, pkg model
 		return nil, fmt.Errorf("failed to fetch package info for %s: %w", pkg.Name, err)
 	}
 
+	nf.incrementProgress()
+
 	dependencies := packageInfo.Dependencies
 	node := &models.DependencyNode{
 		Name:         pkg.Name,