v3.0.0

What's Changed

• Remove support for PHP <8.2 by @hschimpf in #27

🚀 Highlights

• Requires PHP 8.2+ – leverages readonly properties, promoted params, improved typing.
• New exception hierarchy (*Exception.php) + ParallelException DTO.
• Refactored Scheduler, Runner, Task for stricter types and cleaner error propagation.
• GitHub Actions now test on 8.2 · 8.3 · 8.4.

⚠️ Breaking Change

Raising the minimum runtime from 8.0 to 8.2 is a SemVer-major change.
Projects on older PHP versions must stay on the 2.x line.

🆕 Added

• Domain-specific exceptions:
  ActionNotImplementedException, InvalidMessageReceivedException, NoWorkerDefinedException,
  WorkerAlreadyDefinedException, WorkerNotDefinedException, TaskExecutionFailedException.
• ParallelException object to serialise worker-side throwables.
• Modern PHP 8.2 syntax throughout (readonly props, precise return types).

🔄 Changed

• Scheduler::using() now throws WorkerAlreadyDefinedException when attempting to re-register a worker with constructor args.
• Scheduler::runTask() surfaces worker errors via TaskExecutionFailedException.
• Numerous PSR-12 / coding-style fixes and micro-optimisations.

🗑 Removed

• CI workflows for PHP 8.0 / 8.1.
• Generic RuntimeException branches – replaced by specific exceptions.

🧭 Upgrade Guide

1. Ensure your runtime is PHP 8.2+ with ZTS and parallel ≥ 1.2.5 installed.
2. Update composer constraint to "hds-solutions/parallel-sdk": "^3.0".
3. Replace any catch (RuntimeException) blocks for task failures with catch (TaskExecutionFailedException).
4. Avoid re-registering workers with new ctor args; if needed, call Scheduler::removeAllTasks() first.

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Full Changelog: v2.1.4...v3.0.0