diff --git a/src/modules/rag-chat/rag-chat.service.ts b/src/modules/rag-chat/rag-chat.service.ts
index c2d3f9a..b740f94 100644
--- a/src/modules/rag-chat/rag-chat.service.ts
+++ b/src/modules/rag-chat/rag-chat.service.ts
@@ -15,6 +15,7 @@ export interface CreateSessionParams {
   parentKnowledgeBaseId?: string | null;
   createdFrom?: string;
   title?: string;
+  forceCreate?: boolean;
 }
 
 export interface CreateSessionResult {
@@ -33,7 +34,7 @@ export class RagChatService {
   ) {}
 
   async createSession(userId: string, params: CreateSessionParams): Promise<CreateSessionResult> {
-    const { scopeType, scopeId, parentKnowledgeBaseId, createdFrom, title } = params;
+    const { scopeType, scopeId, parentKnowledgeBaseId, createdFrom, title, forceCreate } = params;
 
     if (!VALID_SCOPE_TYPES.includes(scopeType)) {
       throw new BadRequestException(`scopeType must be one of: ${VALID_SCOPE_TYPES.join(', ')}`);
@@ -44,8 +45,8 @@ export class RagChatService {
 
     const derivedKbId = this.deriveParentKbId(scopeType, scopeId, parentKnowledgeBaseId);
 
-    // open-or-create: for non-global scopes, try to find an existing active session
-    if (scopeType !== 'global' && scopeId) {
+    // open-or-create: for non-global scopes, skip lookup when forceCreate
+    if (!forceCreate && scopeType !== 'global' && scopeId) {
       const existing = await this.prisma.chatSession.findFirst({
         where: {
           userId,