Cardano Updates

Flake lock file updates:

• Updated input 'CHaP':
    'github:intersectmbo/cardano-haskell-packages/e8a483522ee73c8c9493ea6055553e5c2532e66b?narHash=sha256-ZzXz2vOhqethlqPgBExPXEnKWvaTbidsIxh5MGv%2BpwE%3D' (2026-05-02)
  → 'github:intersectmbo/cardano-haskell-packages/bc93f1caabfdc4d38c5b44e6eea8f5b8f535775a?narHash=sha256-3YDsDhjAcm5QatdluTKuQ9WeDdwrxZMnKH587pVyv9o%3D' (2026-06-02)
• Updated input 'hackageNix':
    'github:input-output-hk/hackage.nix/ba6ab6f3b781c8f308cba4fa384eafa48033f3cc?narHash=sha256-cPUF8%2Bl1ej7x4UZcuuf6IDsxU1WWmGWC0vFBH%2B6jXZk%3D' (2026-05-06)
  → 'github:input-output-hk/hackage.nix/4c597d96d9b7c971b245af8a2d196fa873e95137?narHash=sha256-9Pz5ZTTMDtz7qxOPWXgF77VQgfzx0lfiRjpU9x3gl7w%3D' (2026-06-06)

Based on a mainnet db-sync and mainnet genesis files we reconstructed the timeline with no cardano-profile implementation specifics

Going forward, the only way to inject cost models with any number of parameters is through Alonzo genesis "extraConfig" field.

- Structure: Separates cost models from the rest of the parameters.
- Consistency: Shelley genesis is the full object, no only the "protocolParams" field.
- Consistency: Uses everywhere an object for the cost model, no arrays.
- Cost model names are updated.

- Structure: Separates cost models from the rest of the parameters.
- Consistency: Shelley genesis is the full object, no only the "protocolParams" field.
- Consistency: Uses everywhere an object for the cost model, no arrays.
- Cost model names are updated.

Were removed when the node started only considering valid what mainnet shipped with

The pool relays were wrote into the Shelley genesis (via `pool-relays.json` and `cardano-cli ... --relays` / `--relay-specification-file`) are only consumed by ledger-peer discovery.

With ledger peers off and `publicRoots` empty, the relay records in genesis are never read.

Every workbench topology disables it:
- the supervisor (local / 127.0.0.1) backend gets `useLedgerAfterSlot: -1` from `cardano-topology projection-for`.
- the Nomad backend hardcodes the same value (nix/workbench/backend/nomad-job.nix).

Was converging to `create-staked` output, keep `create-testnet-data` layout:
- pools-keys/poolN/{cold,kes,vrf,opcert}.{skey,vkey,cert,counter}
- stake-delegators/delegatorN/{payment,staking}.{skey,vkey}
- drep-keys/drepN/drep.{skey,vkey}
- utxo-keys/utxoN/utxo.{skey,vkey}
- genesis-keys/genesisN/key.{skey,vkey}
- delegate-keys/delegateN/{key,kes,vrf,opcert}.{skey,vkey,cert,counter}
- byron-gen-command/

Normalises genesis files names. Every era's genesis file is now genesis.<era>.json everywhere:
- genesis.byron.json
- genesis.shelley.json
- genesis.alonzo.json
- genesis.conway.json
- genesis.dijkstra.json

Details:
- create-testnet-data drops its symlink-creation block and the `link_keys` helper (no longer needed under the native layout).
- Removes `Massage_the_key_file_layout_to_match_AWS`, `key_depl` and `key_genesis`.

Genesis file names are unchanged here.

Replaces 'cardano-cli byron genesis genesis'.

This introduces changes to the cache output so the directory entry now has the "v2" suffix.

Removes genesis-byron-{jq,modular} and the genesis-byron dispatcher.

ci: improve github actions