fix port issue

Dockerfile

@@ -8,7 +8,7 @@ RUN pip install --no-cache-dir -r requirements.txt
 COPY backend/ ./backend/
 COPY frontend/ ./frontend/
 
-EXPOSE 7860 7862
+EXPOSE 7860
 
-CMD uvicorn backend.main:app --host 0.0.0.0 --port 7860 --app-dir /app & \
+CMD uvicorn backend.main:app --host 0.0.0.0 --port 8000 --app-dir /app & \
     python frontend/app.py

frontend/app.py

@@ -4,7 +4,7 @@ import matplotlib.pyplot as plt
 import matplotlib
 matplotlib.use('Agg')  # non-interactive backend for servers
 
-BACKEND_URL = "http://localhost:7860"
+BACKEND_URL = "http://localhost:8000"
 
 def classify_intent(text):
     if not text.strip():