cpex-core 0.2.2

CPEX plugin runtime core — PluginManager, executor, hooks, and config.
Documentation 
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// Location: ./crates/cpex-core/src/extensions/provenance.rs
// Copyright 2025
// SPDX-License-Identifier: Apache-2.0
// Authors: Teryl Taylor
//
// ProvenanceExtension — origin and message threading.
// Mirrors cpex/framework/extensions/provenance.py.

use serde::{Deserialize, Serialize};

/// Origin and message threading.
///
/// Immutable — set by the host.
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct ProvenanceExtension {
    /// Source system or service.
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub source: Option<String>,

    /// Unique message identifier.
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub message_id: Option<String>,

    /// Parent message ID (for threading).
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub parent_id: Option<String>,
}