Validates long-running task state transitions per the new MCP spec state machine. Each transition is checked against legal edges. Returns VALID or INVALID with any illegal transitions flagged. Terminal node of the agent-authorization-lifecycle chain.
New MCP SpecTask LifecycleState MachineZero PIIW3C VC §13.11
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Scope
Terminal node of the agent-authorization-lifecycle chain (art-150→151→152). Validates long-running task state transitions per the new MCP spec state machine. Each {from, to} transition is checked for legality.