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Fix compaction turn prefix summarization (#738)

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vsabavat 2026-01-14 18:23:34 -08:00 • committed by GitHub
parent 537bdb6972
commit 72e29bce27
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1 changed files with 10 additions and 6 deletions
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16
packages/coding-agent/src/core/compaction/compaction.ts
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@ -7,7 +7,7 @@
import type { AgentMessage } from "@mariozechner/pi-agent-core";
import type { AssistantMessage, Model, Usage } from "@mariozechner/pi-ai";
import { complete, completeSimple } from "@mariozechner/pi-ai";
import { completeSimple } from "@mariozechner/pi-ai";
import { convertToLlm, createBranchSummaryMessage, createCustomMessage } from "../messages.js";
import type { CompactionEntry, SessionEntry } from "../session-manager.js";
import {
@ -719,18 +719,22 @@ async function generateTurnPrefixSummary(
signal?: AbortSignal,
): Promise<string> {
const maxTokens = Math.floor(0.5 * reserveTokens); // Smaller budget for turn prefix
const transformedMessages = convertToLlm(messages);
const llmMessages = convertToLlm(messages);
const conversationText = serializeConversation(llmMessages);
const promptText = `<conversation>\n${conversationText}\n</conversation>\n\n${TURN_PREFIX_SUMMARIZATION_PROMPT}`;
const summarizationMessages = [
...transformedMessages,
{
role: "user" as const,
content: [{ type: "text" as const, text: TURN_PREFIX_SUMMARIZATION_PROMPT }],
content: [{ type: "text" as const, text: promptText }],
timestamp: Date.now(),
},
];
const response = await complete(model, { messages: summarizationMessages }, { maxTokens, signal, apiKey });
const response = await completeSimple(
model,
{ systemPrompt: SUMMARIZATION_SYSTEM_PROMPT, messages: summarizationMessages },
{ maxTokens, signal, apiKey },
);
if (response.stopReason === "error") {
throw new Error(`Turn prefix summarization failed: ${response.errorMessage || "Unknown error"}`);