fixed remove issue, made items avaiable for available view

trade-hub/backend/app/api.py

@@ -11,6 +11,7 @@ from fastapi.middleware.cors import CORSMiddleware
 
 from app import config
 from app.auth import router as auth_router
+from app.available import router as available_router
 from app.catalog import store
 from app.db import db_healthy, init_db
 from app.inventory import router as inventory_router
@@ -45,6 +46,7 @@ if config.CORS_ORIGINS:
 
 app.include_router(auth_router)
 app.include_router(inventory_router)
+app.include_router(available_router)
 
 VALID_CATEGORIES = {"ships", "ship-items", "fps-items"}