🩹 Fix FastAPI app initialization

src/ohmyapi/core/runtime.py

@@ -81,8 +81,8 @@ class Project:
 
         # Attach routers from apps
         for app_name, app_def in self._apps.items():
-            if app_def.router:
-                app.include_router(app_def.router)
+            for router in app_def.routers:
+                app.include_router(router)
 
         # Startup / shutdown events
         @app.on_event("startup")
@@ -333,15 +333,22 @@ class App:
             module: out,
         }
 
+    @property
+    def routers(self):
+        out = []
+        for routes_mod in self._routers:
+            for r in self._routers[routes_mod]:
+                out.append(r)
+        return out
+
     @property
     def routes(self):
         """
         Return an APIRouter with all loaded routes.
         """
         router = APIRouter()
-        for routes_mod in self._routers:
-            for r in self._routers[routes_mod]:
-                router.include_router(r)
+        for r in self.routers:
+            router.include_router(r)
         return router.routes
 
     def dict(self) -> Dict[str, Any]: