Cardano Updates

Now that the friendly renderer covers Shelley through Babbage, those
tx bodies' update field is no longer just noise — it carries real
governance state (a ProposedPPUpdates map keyed by genesis-key hash and
an EpochNo). Render it directly from the ledger TxBody via
`updateTxBodyL`. Conway replaced update proposals with the new
governance system, so the field is absent (not null) in Conway+.

Adds `updateProposalPairFor` and `renderUpdate` helpers; the
per-era PParamsUpdate is rendered via its ledger ToJSON instance.

friendlyTx and friendlyTxBody now take ShelleyBasedEra era and accept
Exp.SignedTx era / Exp.UnsignedTx (ShelleyLedgerEra era). They are no
longer parameterised by Exp.Era era (which is Conway-only) — the
renderer works for Shelley through Conway tx and tx-body files,
unblocking transaction view for pre-Conway tx files.

friendlyTxBodyImpl reads every field directly from the ledger TxBody
via lenses, so the old API's TxBodyContent constructor and
getTxBodyContent are no longer used in this module.

The body composes a list of pairs from per-feature helpers
(validityRangePair, mintPairFor, collateralInputsPairFor,
requiredSignersPairFor, referenceInputsPairFor, totalCollateralPairFor,
returnCollateralPairFor, alonzoScriptWitnessPairsFor,
conwayBodyPairsFor). Era-gated helpers return [Aeson.Pair] and emit []
in eras that don't have the field, so JSON keys for absent-in-this-era
fields (e.g. "mint" in Shelley, "collateral inputs" in Mary) are
omitted from the output rather than rendered as null. The eon-based
dispatchers (forShelleyBasedEraInEon, AlonzoEraOnwards,
ConwayEraOnwards, ...) are no longer used in this module.

Also adds an Alonzo YAML golden test alongside the existing JSON
golden to cover the YAML output path for that era.

Relies on cardano-api 11.1.0.0 (PR IntersectMBO/cardano-api#1199),
which widened Exp.SignedTx / Exp.UnsignedTx to all Shelley-based eras.

Now that the friendly renderer covers Shelley through Babbage, those
tx bodies' update field is no longer just noise — it carries real
governance state (a ProposedPPUpdates map keyed by genesis-key hash and
an EpochNo). Render it directly from the ledger TxBody via
`updateTxBodyL`. Conway replaced update proposals with the new
governance system, so the field is absent (not null) in Conway+.

Adds `updateProposalPairFor` and `renderUpdate` helpers; the
per-era PParamsUpdate is rendered via its ledger ToJSON instance.

friendlyTx and friendlyTxBody now take ShelleyBasedEra era and accept
Exp.SignedTx era / Exp.UnsignedTx (ShelleyLedgerEra era). They are no
longer parameterised by Exp.Era era (which is Conway-only) — the
renderer works for Shelley through Conway tx and tx-body files,
unblocking transaction view for pre-Conway tx files.

friendlyTxBodyImpl reads every field directly from the ledger TxBody
via lenses, so the old API's TxBodyContent constructor and
getTxBodyContent are no longer used in this module.

The body composes a list of pairs from per-feature helpers
(validityRangePair, mintPairFor, collateralInputsPairFor,
requiredSignersPairFor, referenceInputsPairFor, totalCollateralPairFor,
returnCollateralPairFor, alonzoScriptWitnessPairsFor,
conwayBodyPairsFor). Era-gated helpers return [Aeson.Pair] and emit []
in eras that don't have the field, so JSON keys for absent-in-this-era
fields (e.g. "mint" in Shelley, "collateral inputs" in Mary) are
omitted from the output rather than rendered as null. The eon-based
dispatchers (forShelleyBasedEraInEon, AlonzoEraOnwards,
ConwayEraOnwards, ...) are no longer used in this module.

Also adds an Alonzo YAML golden test alongside the existing JSON
golden to cover the YAML output path for that era.

Relies on cardano-api 11.1.0.0 (PR IntersectMBO/cardano-api#1199),
which widened Exp.SignedTx / Exp.UnsignedTx to all Shelley-based eras.

Now that the friendly renderer covers Shelley through Babbage, those
tx bodies' update field is no longer just noise — it carries real
governance state (a ProposedPPUpdates map keyed by genesis-key hash and
an EpochNo). Render it directly from the ledger TxBody via
`updateTxBodyL`. Conway replaced update proposals with the new
governance system, so the field is absent (not null) in Conway+.

Adds `updateProposalPairFor` and `renderUpdate` helpers; the
per-era PParamsUpdate is rendered via its ledger ToJSON instance.

friendlyTx and friendlyTxBody now take ShelleyBasedEra era and accept
Exp.SignedTx era / Exp.UnsignedTx (ShelleyLedgerEra era). They are no
longer parameterised by Exp.Era era (which is Conway-only) — the
renderer works for Shelley through Conway tx and tx-body files,
unblocking transaction view for pre-Conway tx files.

friendlyTxBodyImpl reads every field directly from the ledger TxBody
via lenses, so the old API's TxBodyContent constructor and
getTxBodyContent are no longer used in this module.

The body composes a list of pairs from per-feature helpers
(validityRangePair, mintPairFor, collateralInputsPairFor,
requiredSignersPairFor, referenceInputsPairFor, totalCollateralPairFor,
returnCollateralPairFor, alonzoScriptWitnessPairsFor,
conwayBodyPairsFor). Era-gated helpers return [Aeson.Pair] and emit []
in eras that don't have the field, so JSON keys for absent-in-this-era
fields (e.g. "mint" in Shelley, "collateral inputs" in Mary) are
omitted from the output rather than rendered as null. The eon-based
dispatchers (forShelleyBasedEraInEon, AlonzoEraOnwards,
ConwayEraOnwards, ...) are no longer used in this module.

Also adds an Alonzo YAML golden test alongside the existing JSON
golden to cover the YAML output path for that era.

Relies on cardano-api 11.1.0.0 (PR IntersectMBO/cardano-api#1199),
which widened Exp.SignedTx / Exp.UnsignedTx to all Shelley-based eras.

The 7-way ShelleyBasedEra case duplicated body/mAuxData extraction and
a near-identical field list (with Null placeholders) in every branch.
Extract one helper per feature (validityRangePair, mintPair,
collateralInputsPair, requiredSignersPair, referenceInputsPair,
totalCollateralPair, returnCollateralPair) plus
alonzoScriptWitnessPairsFor / conwayBodyPairsFor. The top-level body
now extracts body/mAuxData once and composes a flat list of pairs.

No behaviour change: all golden outputs are unchanged.

Now that the friendly renderer covers Shelley through Babbage, those
tx bodies' update field is no longer just noise — it carries real
governance state (a ProposedPPUpdates map keyed by genesis-key hash and
an EpochNo). Render it directly from the ledger TxBody via
`updateTxBodyL`. Conway replaced update proposals with the new
governance system, so the field is absent (not null) in Conway+.

Adds `updateProposalPairFor` and `renderUpdate` helpers; the
per-era PParamsUpdate is rendered via its ledger ToJSON instance.

friendlyTx and friendlyTxBody now take ShelleyBasedEra era and accept
Exp.SignedTx era / Exp.UnsignedTx (ShelleyLedgerEra era). They are no
longer parameterised by Exp.Era era (which is Conway-only) — the
renderer works for Shelley through Conway tx and tx-body files,
unblocking transaction view for pre-Conway tx files.

friendlyTxBodyImpl reads every field directly from the ledger TxBody
via lenses, so the old API's TxBodyContent constructor and
getTxBodyContent are no longer used in this module.

The body dispatches on ShelleyBasedEra at the top level and each
branch renders its full body inline. Era-gated fields (mint,
collateral, reference inputs, governance actions, etc.) are present
only in branches whose era supports them. The eon-based dispatchers
(forShelleyBasedEraInEon, AlonzoEraOnwards, ConwayEraOnwards, ...) are
no longer used in this module.

Relies on cardano-api 11.1.0.0 (PR IntersectMBO/cardano-api#1199),
which widened Exp.SignedTx / Exp.UnsignedTx to all Shelley-based eras.

Bump CHaP index-state to pick up cardano-api 11.1.0.0, which contains
the widening of Exp.SignedTx to all Shelley-based eras (PR #1199) used
by the friendly rendering work in this branch.

The field was hardcoded to null across all eras since the
update-proposal handling was removed in #1372. Always-null fields
are noise; drop the key entirely and regenerate the goldens.

The 7-way ShelleyBasedEra case duplicated body/mAuxData extraction and
a near-identical field list (with Null placeholders) in every branch.
Extract one helper per feature (validityRangePair, mintPair,
collateralInputsPair, requiredSignersPair, referenceInputsPair,
totalCollateralPair, returnCollateralPair) plus
alonzoScriptWitnessPairsFor / conwayBodyPairsFor. The top-level body
now extracts body/mAuxData once and composes a flat list of pairs.

No behaviour change: all golden outputs are unchanged.

friendlyTx and friendlyTxBody now take ShelleyBasedEra era (instead of
Exp.Era era), accepting Exp.SignedTx era / Exp.UnsignedTx
(ShelleyLedgerEra era). This unblocks transaction view for pre-Conway
tx files.

friendlyTxBodyImpl dispatches on ShelleyBasedEra at the top level and
each branch renders its full body inline. Era-gated fields (mint,
collateral, reference inputs, governance actions, etc.) are present
only in branches whose era supports them.

The eon-based dispatchers (forShelleyBasedEraInEon, AlonzoEraOnwards,
ConwayEraOnwards, ...) are no longer used in this module.

friendlyTx and friendlyTxBody now take Exp.SignedTx / Exp.UnsignedTx
instead of the old Tx / TxBody. friendlyTxBodyImpl reads every field
directly from the ledger TxBody via lenses, so the old TxBodyContent
constructor and getTxBodyContent are no longer used in this module.

Bump CHaP index-state to pick up cardano-api 11.1.0.0, which contains
the widening of Exp.SignedTx to all Shelley-based eras (PR #1199) used
by the friendly rendering work in this branch.

The 7-way ShelleyBasedEra case duplicated body/mAuxData extraction and
a near-identical field list (with Null placeholders) in every branch.
Extract one helper per feature (validityRangePair, mintPair,
collateralInputsPair, requiredSignersPair, referenceInputsPair,
totalCollateralPair, returnCollateralPair) plus
alonzoScriptWitnessPairsFor / conwayBodyPairsFor. The top-level body
now extracts body/mAuxData once and composes a flat list of pairs.

No behaviour change: all golden outputs are unchanged.

The field was hardcoded to null across all eras since the
update-proposal handling was removed in #1372. Always-null fields
are noise; drop the key entirely and regenerate the goldens.

friendlyTx and friendlyTxBody now take ShelleyBasedEra era (instead of
Exp.Era era), accepting Exp.SignedTx era / Exp.UnsignedTx
(ShelleyLedgerEra era). This unblocks transaction view for pre-Conway
tx files.

friendlyTxBodyImpl dispatches on ShelleyBasedEra at the top level and
each branch renders its full body inline. Era-gated fields (mint,
collateral, reference inputs, governance actions, etc.) are present
only in branches whose era supports them.

The eon-based dispatchers (forShelleyBasedEraInEon, AlonzoEraOnwards,
ConwayEraOnwards, ...) are no longer used in this module.

Adds a temporary source-repository-package for cardano-api at the
widen-Exp.SignedTx-to-Shelley-based-eras branch (PR
IntersectMBO/cardano-api#1199). To be removed once that PR merges and
ships in CHaP.