Cardano Updates

Signed-off-by: Sasha Bogicevic <[email protected]>

Signed-off-by: Sasha Bogicevic <[email protected]>

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

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

The "Always: Commands finish with zero exit code" property has been
flagging tx-generator/parallel_driver_refill.sh at ~0.12% in recent
Antithesis runs (6/4908 on the 2026-05-11 Cardano Foundation Test
run). Every failing example shows the SDK's antithesis_random Rust
binary writing
  Error: Os { code: 32, kind: BrokenPipe, message: "Broken pipe" }
to the script's stderr immediately before the script exits non-zero —
the parent bash interpreter receives SIGPIPE and dies with 141.

Install sdk_install_signal_trap (from the now-shared composer-sdk
helper) at the top of every tx-generator composer script. The trap
converts in-bash SIGPIPE/SIGTERM/SIGINT into a Sometimes-optional
observation + exit 0, mirroring the defense asteria-game has carried
since df7ef80.

Extract emit + signal-handling helpers into
components/composer-sdk/helper_sdk_common.sh, wired into both
component subflakes as a path: input. asteria-game/helper_sdk.sh and
tx-generator/helper_sdk_lib.sh become thin shims that source the
shared file alongside any component-specific helpers
(control_socket_request for tx-generator).

No behavior change for asteria-game; tx-generator gains the
sdk_install_signal_trap / sdk_run_signal_safe[_fn] /
sdk_sometimes_optional primitives previously available only on the
asteria side. Callers of those primitives in tx-generator are added in
the follow-up commit.

Replace the deprecated getTxBody/getTxId chain in
Cardano.Rpc.Server.Internal.UtxoRpc.Submit with a direct ledger projection:
pattern-match the API Tx, then compute the TxId via Cardano.Ledger.Core.txIdTx
(which is bodyTxL composed with txIdTxBody) and lift back through
fromShelleyTxId.

Deprecates the old-API transaction body surface (the type, its
constructor, and direct producers/consumers) so users are pointed at
'Cardano.Api.Experimental'. Internal modules that still use these
symbols are annotated with -Wno-deprecations to keep -Werror green;
they will be migrated in a follow-up along with the setter family.

Deprecations:
- TxBody (data type), ShelleyTxBody (constructor)
- TxBodyContent (type/constructor)
- createTransactionBody, defaultTxBodyContent
- getTxBody, getTxBodyContent
- BalancedTxBody

The existing pattern-synonym TxBody deprecation message is updated for
consistency with the new messages.

Migrates Cardano.CLI.Compatible.Json.Friendly off the old-API
Tx / TxBody / TxBodyContent onto Exp.SignedTx / Exp.UnsignedTx, with
the public renderer functions (friendlyTx, friendlyTxBody,
friendlyTxImpl, friendlyTxBodyImpl) now taking Exp.Era era instead of
ShelleyBasedEra era. This is the last consumer of old-API
TxBodyContent in cardano-cli.

Behaviour change: 'cardano-cli debug transaction view' and
'cardano-cli transaction view' now only accept Conway and Dijkstra
tx / tx-body files. Pre-Conway files (Shelley, Allegra, Mary, Alonzo,
Babbage) fail with a DeprecatedEra error. The corresponding pre-Conway
golden tests have been removed.

This will use the correct package database

This reverts commit 196f5bc92ce7697ffaf30d7ce7fd2a9720d1a1bb.

Migrate the union level once the merging tree is completed

- /governance/committee: current committee snapshot with members, quorum,
  and source NewCommittee governance action (null for the Conway-genesis
  committee).
- /governance/committee/votes: paged history of all CC member votes.
- /governance/committee/{cc_id}/votes: paged votes filtered by CIP-129 hot
  or cold credential; cold queries aggregate across hot-key rotations.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

- /governance/committee: current committee snapshot with members, quorum,
  and source NewCommittee governance action (null for the Conway-genesis
  committee).
- /governance/committee/votes: paged history of all CC member votes.
- /governance/committee/{cc_id}/votes: paged votes filtered by CIP-129 hot
  or cold credential; cold queries aggregate across hot-key rotations.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

Adds three endpoints for surfacing constitutional committee state and votes:

- GET /governance/committee — current committee snapshot with members,
  quorum, members count, and source NewCommittee gov action (genesis
  committee returns proposal fields as null and `is_genesis: true`).
- GET /governance/committee/votes — paged list of all CC votes ever cast.
- GET /governance/committee/:cc_id/votes — paged list of votes filtered
  by CIP-129 hot (cc_hot1...) or cold (cc_cold1...) credential.
  Cold queries aggregate across every hot key the cold has authorized.

Per-vote shape includes the voting anchor (metadata_url / metadata_hash),
governance_type, block height/time, and the voter's CIP-129 hot id.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>