v0.7.0-preview.1

Added

• Added a workflow engine and Vue/React interfaces for design, organization-leader and branched approvals, delegation, timeouts, CC, monitoring, and history.
• Added idempotent workflow commands and replay, operation receipts, extensible node handlers, leased execution and retry history, an outbox, and Webhook nodes.
• Added shadow-only AI decision nodes and an OpenAI-compatible provider; decisions are evaluated and audited but never approve automatically. Added expense-decision evaluation and sample-collection tools.

Fixed

• Hardened workflow approval concurrency, participant isolation, stale Webhook results, and MySQL outbox replay; an unset outbox transport now fails explicitly.
• Fixed job-capacity reservation, unique WorkerId allocation and dead-process lease recovery, session revocation and cache atomicity, Markdown rendering, and asynchronous frontend interactions.