[0.1.0] - 2026-02-19

Added

• Initial public release of a2a-spec.
• SnapshotStore with path-traversal protection.
• DiffEngine for structural and semantic diff of agent outputs.
• PipelineExecutor for DAG-based multi-agent pipeline testing.
• CLI commands: record, test, diff, pipeline, init.
• Frozen dataclasses for FieldDiff, SemanticComparison, PolicyResult.
• Structured logging via logging.getLogger(__name__) in all modules.
• CI matrix across Python 3.11, 3.12, 3.13.
• Trusted Publishing workflow for PyPI releases.