feat(playback): Implement listEntries for chat summary

- Implement a new 'listEntries' function that provides a one-line
  summary for each entry within a chat topic.
- The 'showChat' function (triggered by 'playback --uuid') now
  calls this new summary view.

doPlayback.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"strings"
 
 	"go.wit.com/lib/protobuf/chatpb"
 	"go.wit.com/log"
@@ -22,8 +23,7 @@ func showChat(uuid string) {
 		log.Info("unknown uuid", uuid)
 		return
 	}
-	// Call the new, dedicated formatting function.
-	prettyFormatChat(chat)
+	listEntries(chat)
 }
 
 func listChats(chats *chatpb.Chats) {
@@ -46,13 +46,37 @@ func listChats(chats *chatpb.Chats) {
 			formattedTime,
 			chat.GetUuid(),
 		)
-		if argv.Playback.Long != nil {
-			listEntries(chat)
-		}
 	}
 	fmt.Println("-------------------------------------------------")
 }
 
 // print out one line for each chat entry
 func listEntries(chat *chatpb.Chat) {
+	fmt.Printf("\n--- Entries for Topic: %s ---\n", chat.GetChatName())
+	for i, entry := range chat.GetEntries() {
+		author := entry.GetFrom().String()
+		var formattedTime string
+		if ctime := entry.GetCtime(); ctime != nil {
+			t := ctime.AsTime()
+			formattedTime = t.Format("15:04:05") // Just the time for entry summary
+		} else {
+			formattedTime = "No Time"
+		}
+
+		// Create a short preview of the content
+		contentPreview := strings.TrimSpace(entry.GetContent())
+		if len(contentPreview) > 60 {
+			contentPreview = contentPreview[:57] + "..."
+		}
+		// Replace newlines with spaces for a clean one-line view
+		contentPreview = strings.ReplaceAll(contentPreview, "\n", " ")
+
+		fmt.Printf("  %2d. [%s] (%s): %s\n",
+			i+1,
+			author,
+			formattedTime,
+			contentPreview,
+		)
+	}
+	fmt.Println("-------------------------------------------------")
 }