feat(iroh): introduce endpoint presets

[dignifiedquire]

Description

Closes #3470

Breaking Changes

• removed
  • iroh::endpoint::Builder::n0_discovery
  • iroh::endpoint::Builder::discovery_dht
  • iroh::endpoint::Builder::discovery_local_network
  • iroh::endpoint::Builder::discovery
  • iroh::discovery::DiscoveryContext
  • iroh::endpoint::Builder::default
• added
  • iroh::Endpoint::bind - this allows to immediately create an Endpoint with the defaults and binds it
  • iroh::endpoint::Endpoint::empty_builder
  • iroh::endpoint::presets - new module, defining a trait on how to preconfigure and Endpoint
  • iroh::endpoint::Builder::new - creates a new builder with the N0 preset
  • iroh::endpoint::Builder::preset
  • iroh::endpoint::Builder::empty - creates a new builder, completely empty (no discovery, no relay map)
• changed
  • iroh::'Endpoint::add_discovery is now called just discovery
  • iroh::discovery::IntoDiscovery now takes an Endpoint instead of a DiscoveryContext

[github-actions]

Documentation for this PR has been generated and is available at: https://n0-computer.github.io/iroh/pr/3523/docs/iroh/

Last updated: 2025-10-14T09:04:49Z

[github-actions]

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Last updated for commit: 981c63e

[rklaehn]

Any reason for preset to take self and not &self?

Imagine you had a complex preset, you would have to clone it to apply it.

[dignifiedquire]

Nothing specific, I was just expecting them to be use once only