Persist and Resume Runs

let paused_json = serde_json::to_string_pretty(&paused)?;
std::fs::write("paused-run.json", paused_json)?;

use phaseo_agent::RunResult;

let saved = std::fs::read_to_string("paused-run.json")?;
let paused: RunResult = serde_json::from_str(&saved)?;

use phaseo_agent::{AgentDefinition, HumanReviewRequest};
use serde_json::json;

let definition = AgentDefinition::new(
    "review-agent",
    "openai/gpt-5.6-sol",
)
.human_review(|context| {
    if context.response.message.content.contains("needs approval") {
        Some(HumanReviewRequest {
            reason: "Review the proposed action".to_string(),
            payload: json!({
                "draft": context.response.message.content
            }),
        })
    } else {
        None
    }
});

use phaseo_agent::ContinueOptions;

let mut options = ContinueOptions::new(paused);
options.human_input = Some(
    "Approved. Continue and return the final result.".to_string(),
);

let completed = agent.continue_run(&mut client, options)?;