The first time https://pubky.app is opened, it fetches certain data to bootstrap the app, using /v0/bootstrap/{user_id} in the Nexus API.

The same data can be fetched by firing different other calls, like "fetch posts" + "fetch hot tags" + "fetch user details" + "fetch tag counts" etc, but the goal of this endpoint is to avoid this and simplify the bootstrapping of the app.

The issue is described in this TODO:

However there is a better and simpler solution than the proposed batching, namely limiting the max number (in this case of UserViews).

Please address the above TODO by limiting the max number of users and posts a Bootstrap object can contain.

The idea is the Bootstrap payload should not be allowed to be that big that a few simple DB lookups cannot handle, but still big enough that it is useful for bootstrapping Pubky App.

To achieve this, introduce some limits, similarly to how it's done for other API endpoints, like