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11 commits this week Apr 29, 2026 - May 06, 2026
Add HydraNodeConfig and update withHydraNode to use it
  Introduce HydraNodeConfig record type and smart constructors
  (mkSoloConfig, mkTwoPartyConfigs, mkThreePartyConfigs) to replace
  positional arguments in withHydraNode, withHydraNodeCatchingUp, and
  withUnsyncedHydraNode. Update all call sites in Scenarios, EndToEndSpec,
  ChainObserverSpec, TUISpec, and Bench/EndToEnd accordingly.

Signed-off-by: Sasha Bogicevic <[email protected]>
Sweep dead code and O(n²) anti-patterns in HeadLogic
  Three cleanups spotted while reviewing the newLocalUTxO removal:

  - waitApplyTx and waitOnApplicableDecommit no longer pass the validated
    UTxO to their continuations (the callers stopped using it after the
    newLocalUTxO removal). Validation still happens; only the unused
    continuation arg is dropped.

  - pruneTransactions: rewrite from foldl' with `txs <> [tx]` (O(n^2))
    to guarded recursion with `tx : go u' rest` (O(n)). Threading the
    running UTxO through `go` is still required for validity checks
    on dependent txs.

  - TransactionReceived aggregate: replace `allTxs <> fromList [(k,v)]`
    with `Map.insert k v allTxs`. Same big-O class but eliminates the
    intermediate singleton-Map allocation per ReqTx.

  No behavioural change. Constant-factor wins on the per-ReqTx hot path.

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