feat: add /flow/tickets fake API

backend/main.py

@@ -91,6 +91,26 @@ async def health_check():
         raise HTTPException(status_code=500, detail="Database connection failed")
 
 
+# Flow tickets (fake data)
+FAKE_TICKETS = [
+    {"id": 1, "title": "ticket 1", "detail": ""},
+    {"id": 2, "title": "ticket 2", "detail": ""},
+]
+
+
+@app.get("/flow/tickets")
+async def list_flow_tickets():
+    return [{"id": t["id"], "title": t["title"]} for t in FAKE_TICKETS]
+
+
+@app.get("/flow/tickets/{ticket_id}")
+async def get_flow_ticket(ticket_id: int):
+    for t in FAKE_TICKETS:
+        if t["id"] == ticket_id:
+            return t
+    raise HTTPException(status_code=404, detail="Ticket not found")
+
+
 @app.get("/api/pois")
 async def list_pois(city_id: Optional[int] = Query(None), district_id: Optional[int] = Query(None)):
     try: