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Changelog

All notable changes to this project are documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

Added

  • ARCP v1.1 feature coverage for session.list_jobs / session.jobs, versioned name@version tool resolution, job.result_chunk, and cost.budget enforcement.
  • Arcp\Errors\BudgetExhaustedException and Arcp\Errors\AgentVersionNotAvailableException mapped to their v1.1 canonical wire codes.
  • Arcp\Errors\ARCPExceptionInterface — root marker for every exception the SDK can throw. Implemented by the existing abstract Arcp\Errors\ARCPException (no migration needed for existing catch blocks). See UPGRADE.md.
  • Arcp\Errors\TransportClosedException — typed replacement for the bare \RuntimeException('… closed') previously thrown by stdio, memory, and WebSocket transports. Maps to ErrorCode::Unavailable.
  • Arcp\Internal\… namespace housing the runtime and client collaborators that were split out of ARCPRuntime / ARCPClient / EnvelopeSerializer. Marked @internal; not part of the BC promise.
  • Toolchain: rector/rector, infection/infection, tools/size-check.php gate enforcing PHP_SDK_GUIDE §14 hard limits. New composer scripts rector, rector:fix, infection, size-check, audit, all.

Changed

  • Envelope, Id, and ErrorPayload validation paths now throw Arcp\Errors\InvalidArgumentException instead of the SPL \InvalidArgumentException. Migration in UPGRADE.md.
  • Every src/ file is wrapped to ≤ 100 chars, every method body ≤ 30 lines, every file ≤ 400 lines, every class ≤ 300 lines.

Fixed

  • Psalm errorLevel: 1 now reports zero errors on test code.

[0.1.0] - 2026-05-10

Added

  • Initial reference SDK release aligned with ARCP protocol v1.1 (see README status).