Cardano Updates

- Extract shared TxBody fields into encodeSharedTxBody
- Add encodeSubTx and encodeSubTxBody for Tx SubTx DijkstraEra
- Encode requiredTopLevelGuards in sub-transaction bodies
- Pass MetadataFormat through encodeTxBody for sub-tx metadata

Co-Authored-By: Claude <[email protected]>

- Replace downgradePParamsHKD with native encoder exposing real
  Dijkstra ref-script parameters (refScriptCostStride,
  refScriptCostMultiplier, maxRefScriptSizePerTx,
  maxRefScriptSizePerBlock)
- Wire up guards field via guardsTxBodyL replacing reqSignerHashesTxBodyL
- Wire up directDeposits and accountBalanceIntervals TxBody fields
- Fix DijkstraUnRegCert incorrectly mapped to ConwayRegCert
- Fix stale module comment referencing CBOR roundtrip

Co-Authored-By: Claude <[email protected]>

The GetDRepDelegations patch history note is better suited to
commit message than an inline comment that will lack context over time.

The SRPs were removed and are now obtained directly from CHaP.

Co-Authored-By: Claude <[email protected]>

Babbage is old enough to be removed per era rotation policy.
Route Babbage transactions to unsupportedEra, keeping only
Conway and Dijkstra as active evaluation eras.

Co-Authored-By: Claude <[email protected]>

Remove babbageToConway and babbageToDijkstra translation paths,
keeping only sameEra and conwayToDijkstra as suggested in review.

Co-Authored-By: Claude <[email protected]>

Align with the two-letter era alias convention used throughout
the codebase (Sh, Al, Ba, Cn). Also qualify Cardano.Ledger.Core
as Ledger.Core for clarity.

Co-Authored-By: Claude <[email protected]>

Add encodePParams, encodeUtxo, encodeGovActionState, and govProposals
to Dijkstra.hs. Replace all unsafeCoerce in Query.hs with these
proper Dijkstra-era encoders.

Co-Authored-By: Claude <[email protected]>

Add ~400 lines of Dijkstra-era encoding functions (encodeTxOut,
encodeNativeScript, encodeDelegCert, encodeScriptPurpose, etc.)
so PredicateFailure.hs can use them instead of unsafeCoercing
through Conway encoders.

Co-Authored-By: Claude <[email protected]>

Add encodeMempoolFailure for Dijkstra era and two new predicate
failures (PointerAddressInCollateralReturn, SpendingOutputFromSubTransaction)
rather than unsafeCoercing through Conway's encodeLedgerFailure.

Co-Authored-By: Claude <[email protected]>

Use upgradeTxOut and fmap upgrade for BabbageTxOut and UTxO
Dijkstra era translations instead of unsafeCoerce.

Co-Authored-By: Claude <[email protected]>

Update test generators, specs, and orphan instances to include
Dijkstra era patterns. Add Dijkstra entry to deserialization failure
test data. Fix BootstrapVote voter schema to use ExtendedVerificationKey.
Update all test vector JSON files for the new era.

Co-Authored-By: Claude <[email protected]>

Add ShelleyBasedEraDijkstra and QueryIfCurrentDijkstra pattern matches
across all encoding, decoding, query, and predicate failure modules.
Introduce Ogmios.Data.Json.Dijkstra with CBOR bridge functions for
type conversion between the nominally distinct Dijkstra and Conway
ledger types. Update era indices, codec configs, and the Prelude era
list. Adapt Rewards module to new ledger API types (NonZero,
ChainAccountState, StakeWithDelegation). Re-enable GetDRepDelegations
query now that NodeToClientV_23 is available in cardano-node 11.0.1.

Co-Authored-By: Claude <[email protected]>

Update cabal.project constraints, index-state, and dependency bounds
for cardano-node 11.0.1 (ouroboros-consensus 3.0.1, cardano-ledger-conway
>= 1.22.1). Update Dockerfile, CI workflows, and JSON schemas to
reference the new node version and include the Dijkstra era.

Co-Authored-By: Claude <[email protected]>

The GetDRepDelegations patch history note is better suited to
commit message than an inline comment that will lack context over time.

The SRPs were removed and are now obtained directly from CHaP.

Babbage is old enough to be removed per era rotation policy.
Route Babbage transactions to unsupportedEra, keeping only
Conway and Dijkstra as active evaluation eras.

Remove babbageToConway and babbageToDijkstra translation paths,
keeping only sameEra and conwayToDijkstra as suggested in review.

Align with the two-letter era alias convention used throughout
the codebase (Sh, Al, Ba, Cn). Also qualify Cardano.Ledger.Core
as Ledger.Core for clarity.

Add encodePParams, encodeUtxo, encodeGovActionState, and govProposals
to Dijkstra.hs. Replace all unsafeCoerce in Query.hs with these
proper Dijkstra-era encoders.

Add ~400 lines of Dijkstra-era encoding functions (encodeTxOut,
encodeNativeScript, encodeDelegCert, encodeScriptPurpose, etc.)
so PredicateFailure.hs can use them instead of unsafeCoercing
through Conway encoders.

Add encodeMempoolFailure for Dijkstra era and two new predicate
failures (PointerAddressInCollateralReturn, SpendingOutputFromSubTransaction)
rather than unsafeCoercing through Conway's encodeLedgerFailure.

Use upgradeTxOut and fmap upgrade for BabbageTxOut and UTxO
Dijkstra era translations instead of unsafeCoerce.

Update test generators, specs, and orphan instances to include
Dijkstra era patterns. Add Dijkstra entry to deserialization failure
test data. Fix BootstrapVote voter schema to use ExtendedVerificationKey.
Update all test vector JSON files for the new era.