Cardano Updates

Flake lock file updates:

• Updated input 'CHaP':
    'github:intersectmbo/cardano-haskell-packages/4a6a3769c8cc8297ae8722e51fa5a4700b2db759?narHash=sha256-RQpTHF6VDPWELM4MHQahZrpEtv6ZxSx8oceWGAzJKco%3D' (2025-07-01)
  → 'github:intersectmbo/cardano-haskell-packages/ccbe0a4ee4fbe9a5898984c308230a9d6d05c66f?narHash=sha256-r4LnUtT5gwy7hKaVTfbuSRLuD4eits4ukCVc79MLCHc%3D' (2025-08-22)
• Updated input 'hackageNix':
    'github:input-output-hk/hackage.nix/1df55daef81b543cf3ccab4b1a5a536e32d8ce2a?narHash=sha256-DwjXWJqd3%2BUhvx1OewJDMGxtny20vQvRF4iB%2BH8a3fs%3D' (2025-06-26)
  → 'github:input-output-hk/hackage.nix/cfa32e44ce00b6b641a08aa26bcf1908540dd1e0?narHash=sha256-NH4UcZgr5E%2BHRfAaWfhrOY/RmaSoGtoUVOibJRhMWtA%3D' (2025-08-23)

Co-authored-by: Marcin Wójtowicz <[email protected]>

Co-authored-by: Marcin Wójtowicz <[email protected]>

Better GSM tracing and metrics

Since `createTestnetEnv` is now responsible for creating the sandbox
environment, `cardanoTestnet` no longer needs Genesis information. This
commit removes the dependency, and gets the needed information from the
sandbox environment instead.

Rename `--mainnet` option to `--params-mainnet`

Starting a testnet in an era different than Conway has not been possible
for a while, since the options to do so have been removed from
`cardano-cli`. This commit therefore removes those options from
`cardano-testnet` as well, along wih their respective code paths.

This commit also removes leftover golden files.

Starting a testnet in an era different than Conway has not been possible
for a while, since the options to do so have been removed from
`cardano-cli`. This commit therefore removes those options from
`cardano-testnet` as well, along wih their respective code paths.

Better GSM tracing and metrics

Rename `--mainnet` option to `--params-mainnet`

Better GSM tracing and metrics