fix(workbench): expose session list titles (#1957)

internal/workbenchruntime/service.go

@@ -1486,15 +1486,16 @@ func (s *Server) querySessionSummariesAttempt(ctx context.Context, stage string,
 		}
 		defer rows.Close()
 		for rows.Next() {
-			var sessionID, ownerUserID, projectID, conversationID, threadID, status, lastTraceID sql.NullString
+			var sessionID, ownerUserID, projectID, conversationID, threadID, status, lastTraceID, sessionJSON sql.NullString
 			var projectedSeq sql.NullInt64
 			var createdAt, updatedAt sql.NullString
-			if err := rows.Scan(&sessionID, &ownerUserID, &projectID, &conversationID, &threadID, &status, &lastTraceID, &projectedSeq, &createdAt, &updatedAt); err != nil {
+			if err := rows.Scan(&sessionID, &ownerUserID, &projectID, &conversationID, &threadID, &status, &lastTraceID, &projectedSeq, &createdAt, &updatedAt, &sessionJSON); err != nil {
 				return err
 			}
 			if !sessionID.Valid || strings.TrimSpace(sessionID.String) == "" {
 				continue
 			}
+			sessionPayload := sessionJSONMap(sessionJSON)
 			item := map[string]any{
 				"id":             sessionID.String,
 				"sessionId":      sessionID.String,
@@ -1507,6 +1508,7 @@ func (s *Server) querySessionSummariesAttempt(ctx context.Context, stage string,
 				"projectedSeq":   nullableInt(projectedSeq),
 				"createdAt":      nullableTimeText(createdAt),
 				"updatedAt":      first(nullableTimeText(updatedAt), nullableTimeText(createdAt)),
+				"sessionJson":    sessionPayload,
 				"valuesPrinted":  false,
 				"valuesRedacted": true,
 			}
@@ -1887,9 +1889,21 @@ func sessionSummarySelectClause() string {
 		"projected_seq",
 		"created_at",
 		"updated_at",
+		"session_json",
 	}, ", ")
 }
 
+func sessionJSONMap(raw sql.NullString) map[string]any {
+	if !raw.Valid || strings.TrimSpace(raw.String) == "" {
+		return map[string]any{}
+	}
+	var payload map[string]any
+	if err := json.Unmarshal([]byte(raw.String), &payload); err != nil {
+		return map[string]any{}
+	}
+	return payload
+}
+
 func providerProfileFromSessionJSON(raw sql.NullString) string {
 	if !raw.Valid || strings.TrimSpace(raw.String) == "" {
 		return ""
@@ -1969,7 +1983,19 @@ func sessionSummary(session map[string]any, facts map[string][]any) map[string]a
 	if len(turn) > 0 {
 		turnSummary = map[string]any{"turnId": first(text(turn["turnId"]), traceID), "traceId": traceID, "status": status, "running": isRunning(status), "terminal": isTerminal(status), "eventCount": projection["lastProjectedSeq"], "projection": projection, "projectionStatus": projection["projectionStatus"], "projectionHealth": projection["projectionHealth"], "staleMs": projection["staleMs"], "blocker": projection["blocker"], "timing": timing, "startedAt": timing["startedAt"], "lastEventAt": timing["lastEventAt"], "finishedAt": timing["finishedAt"], "durationMs": timing["durationMs"], "updatedAt": updatedAt(turn)}
 	}
-	return map[string]any{"sessionId": sid, "threadId": nullableText(session["threadId"]), "agentId": first(text(session["agentId"]), "hwlab-code-agent"), "status": status, "running": isRunning(status), "terminal": isTerminal(status), "lastTraceId": nullableText(traceID), "projection": projection, "projectionStatus": projection["projectionStatus"], "projectionHealth": projection["projectionHealth"], "staleMs": projection["staleMs"], "blocker": projection["blocker"], "providerProfile": nullableText(first(text(session["providerProfile"]), text(objectMap(session["sessionJson"])["providerProfile"]))), "messageCount": messageCount, "firstUserMessagePreview": firstUserMessagePreview, "updatedAt": updatedAt(session), "turnSummary": turnSummary, "valuesRedacted": true}
+	title := sessionDisplayTitle(session, firstUserMessagePreview)
+	return map[string]any{"sessionId": sid, "threadId": nullableText(session["threadId"]), "agentId": first(text(session["agentId"]), "hwlab-code-agent"), "title": title, "name": title, "status": status, "running": isRunning(status), "terminal": isTerminal(status), "lastTraceId": nullableText(traceID), "projection": projection, "projectionStatus": projection["projectionStatus"], "projectionHealth": projection["projectionHealth"], "staleMs": projection["staleMs"], "blocker": projection["blocker"], "providerProfile": nullableText(first(text(session["providerProfile"]), text(objectMap(session["sessionJson"])["providerProfile"]))), "messageCount": messageCount, "firstUserMessagePreview": firstUserMessagePreview, "updatedAt": updatedAt(session), "turnSummary": turnSummary, "valuesRedacted": true}
+}
+
+func sessionDisplayTitle(session map[string]any, firstUserMessagePreview any) string {
+	sessionJSON := objectMap(session["sessionJson"])
+	if title := first(text(session["title"]), text(session["name"]), text(session["displayName"]), text(sessionJSON["title"]), text(sessionJSON["name"]), text(sessionJSON["displayName"])); title != "" {
+		return title
+	}
+	if preview := text(firstUserMessagePreview); preview != "" {
+		return preview
+	}
+	return "新建会话"
 }
 
 func messageSummaryForSession(facts map[string][]any, sid string) map[string]any {