Probe target
  repo: https://github.com/txpipe/pallas
  git HEAD: cdee91d931132338570e6e6fef3191a61586d61b
  workspace version: 1.1.1
  method: bundled docs plus shallow upstream API inspection

Inspected API
  pallas-txbuilder/src/conway.rs
    BuildConway::build_conway_raw(self) -> BuiltTransaction
    Documentation: "Raw means no balancing: fees, collateral, and execution
    units must be provided by the caller" and "no automatic fee/ex-units
    calculation."
  pallas-txbuilder/src/transaction/model.rs
    StagingTransaction::fee(u64), output(Output), add_*_redeemer(...)

Conclusion
  pallas-txbuilder is an ergonomic raw assembler, not a balancing surface. The
  four balancing/fixpoint capability questions are therefore NOT-APPLICABLE to
  this API rather than unsupported guesses. A caller must supply a separate
  balancing/fixpoint algorithm.