Coordinating autonomous agents, humans, and automation in shared repositories

Move beyond Git to a ledger-based coordination system that: (1) Tracks all actions (agent, human, automation) with full provenance; (2) Implements explicit coordination rules for multi-actor interactions; (3) Provides clear accountability for each change; (4) Enables safe concurrent modification by different actor types; (5) Maintains audit trails for compliance and debugging; (6) Supports conflict resolution policies specific to agent-human-automation scenarios; (7) Integrates with agent orchestration and CI/CD systems; (8) Allows role-based access control for different actor types.