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fips/docs
Johnathan Corgan d69325a2a3 Merge maint into master
Brings up the four test-harness fixes, the two guard fixes on top of
them, the documentation corrections and the rebuilt changelog block.

Two conflicts, both in files each line had edited independently.

The readme conflicted on the badge pair. Resolved by taking maint's Rust
badge, which no longer asserts a version now that rust-toolchain.toml is
the only place that states one, and keeping this line's own v0.5.0-dev
status badge.

The changelog conflicted because both lines had rebuilt their unreleased
block and git tried to interleave the two. They are kept apart instead:
this line's work stays under Unreleased, and the maint work sits below it
under its own 0.4.2 heading, which is where it will live once that
release is tagged and saves splitting one interleaved block apart again
then. The heading carries no date; that is set at the tag. Both bodies
are carried through unmodified and everything from 0.4.1 down is
unchanged on both.

No Rust or Cargo file is touched by this merge, so the quartet run on
aa6661c still covers the code.
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FIPS Documentation

FIPS (Free Internetworking Peering System) is a self-organizing encrypted mesh network built on Nostr identities, capable of operating over arbitrary transports — local networks, the public internet, Tor, Bluetooth, or point-to-point links — without central infrastructure.

With FIPS, your machine becomes a node in the mesh with a self-generated cryptographic identity. There are two ways to deploy it.

As an overlay on top of existing IP networks, FIPS lets your node reach any other FIPS node wherever it sits — behind a NAT, on a different ISP, on a phone over cellular, on a laptop with only Bluetooth in range, or behind a Tor onion. The mesh forwards IPv6 traffic transparently and end-to-end encrypted, with no central VPN concentrator or coordinating server.

From the ground up over raw Ethernet, WiFi, or Bluetooth, FIPS provides a complete permissionless network without any pre-existing IP infrastructure, ISP, or DNS. Any node that joins the link gets routable IPv6 addresses, peer discovery, and a path to every other node automatically.

Either way, existing networking software runs over it unchanged: SSH, HTTP servers, file transfer, anything IPv6-native works the same way it would on a local network.

New to FIPS? Start with the Getting Started guide.

Documentation Sections

Tutorials

If you are starting from scratch and want a guided path to a working mesh, go here.

How-To Guides

If you have a specific task in mind — enabling a feature, deploying a component, diagnosing a problem — go here.

Reference

If you need to look up wire formats, configuration keys, command flags, or counter inventories, go here.

Design

If you want to understand how the mesh self-organizes, why FIPS makes the choices it does, or how the pieces fit together, go here.