Cardano Updates

Signed-off-by: Chris Gianelloni <[email protected]>

Use pkgsJs.stdenv.mkDerivation instead of pkgs.stdenv.mkDerivation for
the node_modules derivation on Darwin. This ensures the entire build
environment (compiler, linker, and build tools) comes from nixpkgs-22.11,
avoiding both clang enum compatibility issues and linker errors with
native node modules.

Also consolidate darwin.cctools, xcbuild, and python3 to use pkgsJs for
consistency.

Use pkgsJs (nixpkgs-22.11) instead of pkgs (nixpkgs-25.11) for:
- Darwin: darwin.cctools, xcbuild, python3 to avoid clang compatibility
  issues with node-addon-api (enum value -1 error)
- Windows: haskell.lib.justStaticExecutables to avoid disallowGhcReference
  argument incompatibility in Haskell generic-builder

These components require the older toolchain from nixpkgs-22.11 to build
successfully after the nixpkgs-25.11 upgrade.

GHC 8.10.7 (ghc8107) was removed in nixpkgs-25.11, so the Windows
installer build needs to use pkgsJs (nixpkgs-22.11) where it still exists.

GHC 8.10.7 (ghc8107) was removed in nixpkgs-25.11, so the Windows
installer build needs to use pkgsJs (nixpkgs-22.11) where it still exists.

This error surfaced in the flake-parts branch because Windows installers
are now exposed in packages.x86_64-linux (for cross-compilation), which
causes eager evaluation. On the mithril branch, they were only in hydraJobs.

Signed-off-by: Chris Gianelloni <[email protected]>

Signed-off-by: Chris Gianelloni <[email protected]>

in this commit we have tidied long standing expected changes:

1.1 Removed dead crates** — `netsim-ffi/`, `netsim-async/`, `wrappers/` deleted. Workspace updated to `["netsim-core", "netsim"]`.

**1.2 Fixed `set_download_bandwidth` bug** — `netsim-core/src/network/mod.rs:119` was calling `set_upload_bandwidth` instead of `set_download_bandwidth`. Fixed.

**1.3 Fixed `Vec<u8>` / `String` `bytes_size`** — Were returning `capacity + 24` (heap overhead). Now return `len()` — the actual bytes that would travel over a network.

**1.4 Stabilised multiplexer timing** — Removed the `dbg!` macro, fixed the unused variable warning, changed the timing test from exact-equality to `>= 5ms` (which is the correct semantic for a wall-clock test).

**1.5 Drop counters** — `SenderBufferFull` is no longer silently swallowed. Each node now has an `Arc<AtomicU64>` drop counter incremented on each dropped packet. `SimSocket::packets_dropped()` exposes it.

2.1 `configure_link` API** — Full stack: `Network::configure_link(a, b)` in core → `Command::ConfigureLink` → `SimContext::configure_link(a, b)` in netsim. Returns a `SimLinkBuilder` / `LinkBuilder` with `.set_latency()`, `.set_bandwidth()`, `.set_packet_loss()`, `.apply()`.

**2.2 `PacketLoss`** — New `PacketLoss` enum (`None` / `Rate(f64)`) in `netsim-core/src/measure/packet_loss.rs`. Wired into `Link` and checked in `Network::send()` before any routing work is done for dropped packets.

**2.3 `SimStats` observability** — `Network::stats()` returns a `NetworkStats` snapshot. `SimContext::stats()` sends a synchronous `Command::Stats` to the multiplexer and returns a `SimStats` with per-node stats (buffer usage, bandwidth, drop count) and per-link stats (latency, bandwidth, packet loss, bytes in transit).

**2.4 Examples rewritten**:
- `netsim/examples/basic.rs` — two nodes, custom latency/bandwidth/packet loss, send and receive
- `netsim/examples/congestion.rs` — narrow link, flood with packets, observe drop counter
- `netsim/examples/monitoring.rs` — multi-node network, print live `SimContext::stats()` snapshot

Bumps [github.com/blinklabs-io/adder](https://github.com/blinklabs-io/adder) from 0.35.0 to 0.37.0.
- [Release notes](https://github.com/blinklabs-io/adder/releases)
- [Commits](https://github.com/blinklabs-io/adder/compare/v0.35.0...v0.37.0)

---
updated-dependencies:
- dependency-name: github.com/blinklabs-io/adder
  dependency-version: 0.37.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [filippo.io/edwards25519](https://github.com/FiloSottile/edwards25519) from 1.1.0 to 1.1.1.
- [Commits](https://github.com/FiloSottile/edwards25519/compare/v1.1.0...v1.1.1)

---
updated-dependencies:
- dependency-name: filippo.io/edwards25519
  dependency-version: 1.1.1
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [github.com/ethereum/go-ethereum](https://github.com/ethereum/go-ethereum) from 1.16.8 to 1.17.0.
- [Release notes](https://github.com/ethereum/go-ethereum/releases)
- [Commits](https://github.com/ethereum/go-ethereum/compare/v1.16.8...v1.17.0)

---
updated-dependencies:
- dependency-name: github.com/ethereum/go-ethereum
  dependency-version: 1.17.0
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Signed-off-by: Chris Gianelloni <[email protected]>