v0.1.0

Changelog

0.1.0

First tagged version.

What exists

• CLI: run --from X --to Y, list-scenarios, validate. Exit codes: 0 same or costs
  changed, 1 behavior changed or broke, 2 tool failure.
• Scenarios in preflight.config.yml (contract, function, typed arguments, optional submit,
  per-scenario cost threshold).
• Two real stellar/quickstart networks, one per protocol version, the same scenarios on both,
  and a diff with five verdicts: SAME, COSTS_CHANGED, BEHAVIOR_CHANGED, BROKE, ERROR.
• A check that each network's ledger reports the requested protocol before any scenario runs.
• Per-network contract and account identities normalized before diffing, so only real
  differences are reported.
• Markdown and JSON reports; a composite GitHub Action (action/action.yml).
• Four small example contracts with checked-in wasm and checksums.

Verified

• Unit tests for the diff engine, normalization, config loading, argument encoding and reports.
• A real 27 to 28 run, reproduced twice with identical numbers (see the README).

Known limitations

• The automated CI integration test boots one network. The two-network path runs only in the
  manual Real cross-version diff workflow.
• The example contracts are tiny; their cost figures are RPC simulation estimates and should not
  be extrapolated.
• The roughly 6% to 9% instruction drop from 27 to 28 has not been traced to a cause.
• The GitHub Action wrapper is not yet verified end to end.
• Requires Docker. Networks use stellar/quickstart:latest with --protocol-version.