AgentLedger v1.0.0 - Stable Python Runtime-Core

AgentLedger v1.0.0 is the first stable Python runtime-core release.

Stable:

• durable local execution
• Tool Ledger and idempotency semantics
• event-level evidence and replay
• policy, approval, sandbox, budget, and failure boundaries
• worker lease/fencing/cancellation semantics
• runtime contract export
• conformance and release gates

Preview / optional:

• Postgres StateStore adapter
• S3/MinIO BlobStore adapter
• media/stream contracts
• framework adapter facades
• sandbox infrastructure adapters

Not in core:

• planning/workflow engine
• full eval system
• RAG/vector memory
• hosted sandbox infrastructure
• SaaS/multi-tenant product