// Chinese Whispers: 5 agents pass a value through a chain.
// Each agent receives from the previous, freezes, passes to next.
// Tardygrada guarantees: the value at agent_5 == the value at agent_1.
// No other framework can prove this.

agent Pipeline @sovereign {
    invariant(trust_min: @verified)
    invariant(non_empty)

    // Agent 1 commits the original value
    let agent_1: Fact = receive("original message from source") @sovereign

    // Each subsequent agent receives and must match
    let agent_2: Fact = receive("message passed from agent 1") @verified
    let agent_3: Fact = receive("message passed from agent 2") @verified
    let agent_4: Fact = receive("message passed from agent 3") @verified
    let agent_5: Fact = receive("message passed from agent 4") @verified

    // Metadata
    let chain_length: int = 5
    let name: str = "chinese-whispers-test" @sovereign
}