fix: resolve sources listing display issue in GetProject API

cmd/nlm/main.go

@@ -286,6 +286,20 @@ func listSources(c *api.Client, notebookID string) error {
 		return fmt.Errorf("list sources: %w", err)
 	}
 
+	// Removed auth check that was masking beprotojson array nesting bug
+
+	// Debug: print project details
+	if debug {
+		fmt.Fprintf(os.Stderr, "=== Project Debug ===\n")
+		fmt.Fprintf(os.Stderr, "Project ID: %s\n", p.ProjectId)
+		fmt.Fprintf(os.Stderr, "Project Title: %s\n", p.Title)
+		fmt.Fprintf(os.Stderr, "Sources count: %d\n", len(p.Sources))
+		for i, src := range p.Sources {
+			fmt.Fprintf(os.Stderr, "Source %d: %+v\n", i, src)
+		}
+		fmt.Fprintf(os.Stderr, "=====================\n")
+	}
+
 	w := tabwriter.NewWriter(os.Stdout, 0, 4, 4, ' ', 0)
 	fmt.Fprintln(w, "ID\tTITLE\tTYPE\tSTATUS\tLAST UPDATED")
 	for _, src := range p.Sources {

internal/api/client.go

@@ -77,10 +77,38 @@ func (c *Client) GetProject(projectID string) (*Notebook, error) {
 		return nil, fmt.Errorf("get project: %w", err)
 	}
 
+	// Debug: Print raw response before unmarshaling
+	if c.rpc.Config.Debug {
+		fmt.Fprintf(os.Stderr, "=== GetProject Raw Response ===\n")
+		fmt.Fprintf(os.Stderr, "Response length: %d bytes\n", len(resp))
+		previewLen := 500
+		if len(resp) < previewLen {
+			previewLen = len(resp)
+		}
+		fmt.Fprintf(os.Stderr, "Response preview: %s\n", string(resp[:previewLen]))
+		fmt.Fprintf(os.Stderr, "================================\n")
+	}
+
+	// Sources nesting issue is now fixed in beprotojson package
+
 	var project pb.Project
 	if err := beprotojson.Unmarshal(resp, &project); err != nil {
 		return nil, fmt.Errorf("parse response: %w", err)
 	}
+
+	// Debug: Print parsed project after unmarshaling
+	if c.rpc.Config.Debug {
+		fmt.Fprintf(os.Stderr, "=== GetProject Parsed Result ===\n")
+		fmt.Fprintf(os.Stderr, "Project ID: '%s'\n", project.ProjectId)
+		fmt.Fprintf(os.Stderr, "Project Title: '%s'\n", project.Title)
+		fmt.Fprintf(os.Stderr, "Project Emoji: '%s'\n", project.Emoji)
+		fmt.Fprintf(os.Stderr, "Sources count: %d\n", len(project.Sources))
+		if len(project.Sources) > 0 {
+			fmt.Fprintf(os.Stderr, "First source: %+v\n", project.Sources[0])
+		}
+		fmt.Fprintf(os.Stderr, "=================================\n")
+	}
+
 	return &project, nil
 }
 

internal/beprotojson/beprotojson.go

@@ -55,6 +55,14 @@ func (o UnmarshalOptions) Unmarshal(b []byte, m proto.Message) error {
 func (o UnmarshalOptions) populateMessage(arr []interface{}, m proto.Message) error {
 	msg := m.ProtoReflect()
 	fields := msg.Descriptor().Fields()
+	msgName := string(msg.Descriptor().FullName())
+
+	// Special handling for Project message: unwrap extra nesting from GetProject API
+	if msgName == "notebooklm.v1alpha1.Project" && len(arr) == 1 {
+		if innerArr, ok := arr[0].([]interface{}); ok {
+			arr = innerArr
+		}
+	}
 
 	for i, value := range arr {
 		if value == nil {