Fix CI failures from missing bulk-delete route and duplicate release tags.

Restore DELETE /chat-sessions for unit tests, and skip GitHub release creation when the version tag already exists so non-version main merges do not fail.

Co-authored-by: Cursor <cursoragent@cursor.com>

.github/workflows/publish_release.yml

@@ -29,3 +29,6 @@ jobs:
           token: ${{ secrets.GITHUB_TOKEN }}
           tag: ${{ env.VERSION }}
           generateReleaseNotes: true
+          # Branding-only or other non-version main merges should not fail
+          # when the current __version__ already has a release/tag.
+          skipIfReleaseExists: true

multi_llm_chatbot_backend/app/api/routes/chat_sessions.py

@@ -258,6 +258,36 @@ async def save_message_to_session(
     
 
 
+@router.delete("/chat-sessions")
+async def delete_all_chat_sessions(
+    current_user: User = Depends(get_current_active_user)
+):
+    """Soft-delete all active chat sessions for the current user"""
+    try:
+        db = get_database()
+
+        result = await db.chat_sessions.update_many(
+            {
+                "user_id": current_user.id,
+                "is_active": True,
+            },
+            {"$set": {"is_active": False, "updated_at": datetime.utcnow()}},
+        )
+
+        deleted_count = result.modified_count
+        return {
+            "deleted_count": deleted_count,
+            "message": f"Successfully deleted {deleted_count} chat sessions",
+        }
+
+    except Exception as e:
+        logger.error(f"Error deleting all chat sessions for user {current_user.id}: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail="Could not delete chat sessions",
+        )
+
+
 @router.delete("/chat-sessions/{session_id}")
 async def delete_chat_session(
     session_id: str,