Cardano Updates

Only block producers have these credentials set and relays should just
have a Nothing voting key

cardano-mpfs-cage's library and e2e-test use only the pure
Cardano.Tx.{Build,Balance,Ledger} surface, which now lives in the
cross-target `cardano-tx-tools:tx-build` sub-library. Depend on it
directly instead of the full cardano-tx-tools library, so the cage
package's transaction-building closure is free of the node/IO surface
(http-client-tls, haskeline, chain-follower, …).

Bump the cardano-tx-tools pin to 631f1341 (where tx-build is exposed)
and set -build-node-tools so the solver does not pull tx-tools' node
components (which require ouroboros 3.x, conflicting with this project's
ouroboros-consensus ==1.0.0.0 pin).

Enables the MPFS cage-helper wasm cross-target build
(cardano-mpfs-offchain#258).

cardano-mpfs-cage's library and e2e-test use only the pure
Cardano.Tx.{Build,Balance,Ledger} surface, which now lives in the
cross-target `cardano-tx-tools:tx-build` sub-library. Depend on it
directly instead of the full cardano-tx-tools library, so the cage
package's transaction-building closure is free of the node/IO surface
(http-client-tls, haskeline, chain-follower, …).

Bump the cardano-tx-tools pin to 631f1341 (where tx-build is exposed)
and set -build-node-tools so the solver does not pull tx-tools' node
components (which require ouroboros 3.x, conflicting with this project's
ouroboros-consensus ==1.0.0.0 pin).

Enables the MPFS cage-helper wasm cross-target build
(cardano-mpfs-offchain#258).

Flake lock file updates:

• Updated input 'advisory-db':
    'github:rustsec/advisory-db/f2ae5fc' (2026-05-16)
  → 'github:rustsec/advisory-db/eaf48e7' (2026-05-29)
• Updated input 'blockfrost-tests':
    'github:blockfrost/blockfrost-tests/dac734c' (2026-05-15)
  → 'github:blockfrost/blockfrost-tests/72316a2' (2026-05-20)
• Updated input 'crane':
    'github:ipetkov/crane/6d015ea' (2026-05-06)
  → 'github:ipetkov/crane/0532eb1' (2026-05-30)
• Updated input 'fenix':
    'github:nix-community/fenix/ecd6d4f' (2026-05-16)
  → 'github:nix-community/fenix/2118601' (2026-05-30)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/1a68212' (2026-05-15)
  → 'github:rust-lang/rust-analyzer/5ebf65c' (2026-05-29)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/d7a713c' (2026-05-14)
  → 'github:nixos/nixpkgs/25f5383' (2026-05-26)

  Replace the hardcoded 300s worker cooldown with an optional top-level
  "cooldown_seconds" JSON field, defaulting to 0 (no wait). The cooldown
  was added to give multi-node benchmark clusters time to stabilise
  before traffic begins; for single-node ops / iterative testing it's a
  5-minute tax with no benefit. Cluster runs opt back in explicitly.

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

  Companion to the previous SRP pin: adapts the local consumers to the
  shape of consensus / ouroboros-network on the Leios prototype remake
  forks (which differ from CHAP).

  cardano-node/src/Cardano/Node/Run.hs
    - RunNodeArgs gained 'rnLeiosDb :: LeiosDbHandle m' on the
      leios-remake consensus. Initialise it with 'newLeiosDBInMemory' —
      tx-centrifuge has no need for persistence, the Leios DB is just
      bookkeeping for EB notifications.

  bench/tx-centrifuge/lib/tx-centrifuge/.../Tracing/Orphans.hs
    - 'TraceSendMsg' / 'TraceRecvMsg' (from Ouroboros.Network.Driver.
      Simple / Stateful) gained a mux-bearer-time field. Discard it
      with '_' in the local LogFormatting and MetaTrace orphans; we
      don't surface mux timestamps from these instances.

  bench/tx-centrifuge/lib/tx-centrifuge/.../NodeToNode.hs
    - 'NetN2N.Codecs' gained two ByteString slots for the new Peras
      cert/vote diffusion mini-protocols (PerasCertDiffusion,
      PerasVoteDiffusion). Add the slots to the four module-level
      Codecs signatures and the one in 'connect''s where-clause; we
      pass 'BSL.ByteString' for them like every other slot.

    - 'byteLimitsKeepAlive' dropped its size-measurer argument. Drop
      '(const 0)' from the call site accordingly.

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

  Mirrors the SRP set on jl/leios-prototype-remake (the node branch
  carrying the Dijkstra wiring). CHAP's cardano-api 11.0.0.0 ships TODO
  stubs for Dijkstra in caseByronOrShelleyBasedEra, shelleyBasedEra-
  Constraints, etc. — at runtime that surfaces as:

    "TODO Dijkstra: caseByronOrShelleyBasedEra: era not supported"

  ouroboros-consensus / cardano-ledger / ouroboros-network are pinned
  together with cardano-api / cardano-cli because the Leios prototype
  changes are coupled across the set; CHAP versions of any one would
  conflict with sibling APIs (e.g. ouroboros-network needs MkReception
  from network-mux, which isn't on CHAP yet).

  Pin selection trade-offs:

  - cardano-ledger: only libs/cardano-ledger-core + eras/dijkstra/impl
    are pinned. Pinning eras/conway/impl would force cardano-ledger-
    conway 1.22.0.0 (the SRP version), conflicting with cardano-node
    11.0.1's >= 1.22.1.0 requirement which CHAP satisfies.

  - ouroboros-network: all five touched subdirs (ouroboros-network,
    cardano-diffusion, cardano-ping, network-mux, ntp-client) are
    pinned together — ouroboros-network's framework sublibrary uses
    MkReception introduced in network-mux on this branch.

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