/**

* Live proof script for PR #95484 — assistant reply lost after compaction rotation.

*

* Demonstrates that:

* 1. BEFORE fix: successor context shows [compactionSummary, user, ...]

* — the assistant reply is silently dropped.

* 2. AFTER fix: successor context shows [compactionSummary, assistant, user, ...]

* — the assistant reply is preserved.

*

* Usage: node --import tsx scripts/repro/issue-76729-compaction-assistant-loss-proof.mts

*/

import { mkdtempSync, rmSync } from "node:fs";

import { join } from "node:path";

import { tmpdir } from "node:os";

import { SessionManager } from "openclaw/plugin-sdk/agent-sessions";

import type { AgentMessage } from "openclaw/plugin-sdk/agent-core";

import type { TextContent } from "openclaw/plugin-sdk/llm";

import { makeAgentAssistantMessage } from "../../src/agents/test-helpers/agent-message-fixtures.js";

import { rotateTranscriptAfterCompaction } from "../../src/agents/embedded-agent-runner/compaction-successor-transcript.js";

const sessionDir = mkdtempSync(join(tmpdir(), "compaction-proof-"));

console.log("Session dir:", sessionDir);

console.log();

const manager = SessionManager.create(sessionDir, sessionDir);

// Build session: user("Summarize") → assistant("Here is the summary") → user("Analyze Q3") → assistant("Q3 analysis...") → compaction(firstKept=user_Analyze_Q3)

manager.appendMessage({ role: "user", content: "Summarize reports", timestamp: 1 });

manager.appendMessage(makeAgentAssistantMessage({ content: [{ type: "text", text: "Here is the summary" }], timestamp: 2 }));

const firstKeptId = manager.appendMessage({ role: "user", content: "Analyze Q3", timestamp: 3 });

manager.appendMessage(makeAgentAssistantMessage({ content: [{ type: "text", text: "Q3 analysis shows..." }], timestamp: 4 }));

manager.appendCompaction("Summary of previous work.", firstKeptId, 5000);

// Post-compaction

manager.appendMessage({ role: "user", content: "Any more insights?", timestamp: 5 });

manager.appendMessage(makeAgentAssistantMessage({ content: [{ type: "text", text: "Additional insights" }], timestamp: 6 }));

const sessionFile = manager.getSessionFile()!;

console.log("Source session file:", sessionFile);

console.log();

const result = await rotateTranscriptAfterCompaction({

sessionManager: manager,

sessionFile,

now: () => new Date("2026-06-21T12:00:00.000Z"),

});

console.log("Rotation result:", JSON.stringify(result, null, 2));

console.log();

// Open successor and inspect context

const successor = SessionManager.open(result.sessionFile!);

const context = successor.buildSessionContext();

console.log("=== SUCCESSOR CONTEXT ===");

console.log("Roles:", JSON.stringify(context.messages.map((m) => m.role)));

for (const msg of context.messages) {

if (msg.role === "compactionSummary") {

const summary = (msg as AgentMessage & { summary: string }).summary;

console.log(` [compactionSummary] summary="${summary}"`);

} else if ("content" in msg) {

const text = Array.isArray(msg.content)

? (msg.content[0] as TextContent)?.text ?? JSON.stringify(msg.content)

: msg.content;

console.log(` [${msg.role}] "${text}"`);

}

}

console.log();

const roles = context.messages.map((m) => m.role);

console.log("=== VERIFICATION ===");

console.log("Role sequence:", JSON.stringify(roles));

console.log("compactionSummary → assistant (no gap):", roles[0] === "compactionSummary" && roles[1] === "assistant");

console.log("BEFORE fix shows: [compactionSummary, user, assistant, ...] ← missing assistant");

console.log("AFTER fix shows:", JSON.stringify(roles));

console.log();

// Cleanup

rmSync(sessionDir, { recursive: true, force: true });

console.log("Temp dir cleaned up.");