From 86530931fe1dbb792887f32a572dccf716787073 Mon Sep 17 00:00:00 2001
From: euvre <93761161+euvre@users.noreply.github.com>
Date: Fri, 24 Jul 2026 11:36:20 +0800
Subject: [PATCH] fix(agent): set exp_user_id and name on session creation so
 exploration shows session titles (#17327)

---
 internal/service/agent.go          | 20 ++++++++++++++++++--
 internal/service/agent_sessions.go |  1 +
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/internal/service/agent.go b/internal/service/agent.go
index cb1536feab..3f94df99a8 100644
--- a/internal/service/agent.go
+++ b/internal/service/agent.go
@@ -1032,7 +1032,7 @@ func (s *AgentService) RunAgent(ctx context.Context, userID, canvasID, sessionID
 		}
 	}
 	if newSession && len(dsl) > 0 {
-		if err = s.createAgentRunSession(ctx, sessionID, userID, canvasID, dsl, versionRow); err != nil {
+		if err = s.createAgentRunSession(ctx, sessionID, userID, canvasID, dsl, versionRow, userInput); err != nil {
 			return nil, fmt.Errorf("RunAgent: create session %q: %w: %w", sessionID, err, ErrAgentStorageError)
 		}
 	}
@@ -1528,15 +1528,19 @@ func (s *AgentService) createAgentRunSession(
 	sessionID, userID, agentID string,
 	runDSL map[string]any,
 	versionRow *entity.UserCanvasVersion,
+	userInput any,
 ) error {
 	if s == nil || s.api4ConversationDAO == nil {
 		return errors.New("agent session storage is not configured")
 	}
 	source := "agent"
+	name := deriveAgentSessionName(userInput)
 	session := &entity.API4Conversation{
 		ID:        sessionID,
+		Name:      &name,
 		DialogID:  agentID,
 		UserID:    userID,
+		ExpUserID: &userID,
 		Message:   json.RawMessage(`[]`),
 		Reference: json.RawMessage(`[]`),
 		Source:    &source,
@@ -1548,7 +1552,19 @@ func (s *AgentService) createAgentRunSession(
 	return s.api4ConversationDAO.Create(ctx, dao.DB, session)
 }
 
-// runIDFor builds the per-run CanvasState identifier: canvasID
+// deriveAgentSessionName mirrors Python's
+// `req.get("name") or (query[:250] if query else "") or ""` — the
+// session name defaults to the first 250 runes of the user's input
+// so the exploration sidebar shows a meaningful title.
+func deriveAgentSessionName(userInput any) string {
+	text := stringifyAgentUserInput(userInput)
+	runes := []rune(text)
+	if len(runes) > 250 {
+		runes = runes[:250]
+	}
+	return string(runes)
+}
+
 // alone for first-touch runs, canvasID + sessionID for resumed runs
 // (so two concurrent sessions on the same canvas don't collide in
 // the snapshot map).
diff --git a/internal/service/agent_sessions.go b/internal/service/agent_sessions.go
index 289a75b309..6c113e0d96 100644
--- a/internal/service/agent_sessions.go
+++ b/internal/service/agent_sessions.go
@@ -747,6 +747,7 @@ func (s *AgentService) CreateAgentSession(ctx context.Context, req *CreateAgentS
 		Name:      namePtr,
 		DialogID:  req.AgentID,
 		UserID:    req.UserID,
+		ExpUserID: &req.UserID,
 		Message:   messages,
 		Reference: reference,
 		Source:    sourcePtr,