co-primitives 0.1.0

COKIT Primitives used throughout the `co-sdk` and `co-api` and Core implementations.
Documentation 
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// SPDX-License-Identifier: AGPL-3.0-only
// Copyright (C) 2026 1io BRANDGUARDIAN GmbH

use crate::{Date, Did};
use ipld_core::{
	ipld::Ipld,
	serde::{from_ipld, to_ipld},
};
use serde::{de::DeserializeOwned, Deserialize, Serialize};

#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub struct ReducerAction<T> {
	/// Sender.
	#[serde(rename = "f")]
	pub from: Did,

	/// Time when the event occured.
	///
	/// Note: The time from the dispatching device is used.
	#[serde(rename = "t")]
	pub time: Date,

	/// COre affected by this action.
	#[serde(rename = "c")]
	pub core: String,

	/// Action payload.
	#[serde(rename = "p")]
	pub payload: T,
}
impl ReducerAction<Ipld> {
	pub fn set_payload<T: Serialize>(&mut self, value: &T) -> Result<(), String> {
		self.payload = to_ipld(value).map_err(|e| e.to_string())?;
		Ok(())
	}

	pub fn get_payload<T: DeserializeOwned>(&self) -> Result<T, String> {
		from_ipld(self.payload.clone()).map_err(|e| e.to_string())
	}
}