feat: add memory selection and TTL decay

runners/agent-runner/src/index.ts

@@ -28,6 +28,7 @@ import {
   isReviewerMutatingShellCommand,
   isReviewerRuntime,
 } from './reviewer-runtime.js';
+import { selectCompactMemoriesFromSummary } from './memory-selection.js';
 
 interface ContainerInput {
   prompt: string;
@@ -284,17 +285,26 @@ async function persistCompactMemory(summary: string, sessionId: string): Promise
 
   try {
     const scopeKey = `room:${GROUP_FOLDER}`;
-    const file = writeHostTaskIpcFile({
-      type: 'persist_memory',
-      scopeKind: 'room',
-      scopeKey,
-      content: trimSummary(normalized, 300),
-      keywords: [scopeKey],
-      source_kind: 'compact',
-      source_ref: sessionId ? `compact:${sessionId}` : null,
-      timestamp: new Date().toISOString(),
-    });
-    log(`Persisted compact memory via IPC (${file})`);
+    const selected = selectCompactMemoriesFromSummary(normalized, scopeKey);
+    if (selected.length === 0) {
+      log('Skipped compact memory persist - no salient room memory found');
+      return;
+    }
+
+    for (const memory of selected) {
+      const file = writeHostTaskIpcFile({
+        type: 'persist_memory',
+        scopeKind: 'room',
+        scopeKey,
+        content: trimSummary(memory.content, 300),
+        keywords: memory.keywords,
+        memory_kind: memory.memoryKind,
+        source_kind: 'compact',
+        source_ref: sessionId ? `compact:${sessionId}` : null,
+        timestamp: new Date().toISOString(),
+      });
+      log(`Persisted compact memory via IPC (${file})`);
+    }
   } catch (err) {
     log(
       `Failed to persist compact memory via IPC: ${

runners/agent-runner/src/memory-selection.ts

@@ -0,0 +1,73 @@
+export interface SelectedCompactMemory {
+  content: string;
+  keywords: string[];
+  memoryKind: string | null;
+}
+
+const MAX_SELECTED_MEMORIES = 3;
+
+const MEMORY_PATTERNS: Array<{
+  kind: string | null;
+  regex: RegExp;
+  keyword: string;
+}> = [
+  { kind: 'room_norm', regex: /(규칙|원칙|금지|반드시|하지 않|세션 시작 시에만|새 세션 시작 시에만)/i, keyword: 'rule' },
+  { kind: 'preference', regex: /(선호|원함|원한다|원하는|원했다)/i, keyword: 'preference' },
+  { kind: 'decision', regex: /(합의|결정|방향|기준|우선|책임지는 방향)/i, keyword: 'decision' },
+  { kind: 'project_fact', regex: /(owner|reviewer|trigger|모드|메모리|기억|세션 리셋|recall|persist|compact)/i, keyword: 'memory' },
+];
+
+function normalizeSentence(raw: string): string | null {
+  const normalized = raw
+    .trim()
+    .replace(/^[-*]\s*/, '')
+    .replace(/\s+/g, ' ');
+  return normalized ? normalized : null;
+}
+
+function splitSummaryIntoSentences(summary: string): string[] {
+  return summary
+    .split(/\n+|(?<=[.!?。])\s+/)
+    .map(normalizeSentence)
+    .filter((value): value is string => Boolean(value));
+}
+
+function classifyMemorySentence(content: string): SelectedCompactMemory | null {
+  if (!content) return null;
+
+  const matchedPatterns = MEMORY_PATTERNS.filter(({ regex }) => regex.test(content));
+  if (matchedPatterns.length === 0) return null;
+
+  const primary = matchedPatterns[0];
+  const keywords = [
+    ...new Set(
+      matchedPatterns
+        .map((pattern) => pattern.keyword)
+        .filter(Boolean),
+    ),
+  ];
+
+  return {
+    content,
+    keywords,
+    memoryKind: primary?.kind ?? null,
+  };
+}
+
+export function selectCompactMemoriesFromSummary(
+  summary: string,
+  roomKey: string,
+): SelectedCompactMemory[] {
+  if (!summary.trim()) return [];
+
+  const selected = splitSummaryIntoSentences(summary)
+    .map((sentence) => classifyMemorySentence(sentence))
+    .filter((value): value is SelectedCompactMemory => Boolean(value))
+    .slice(0, MAX_SELECTED_MEMORIES)
+    .map((entry) => ({
+      ...entry,
+      keywords: [...new Set([roomKey, ...entry.keywords])],
+    }));
+
+  return selected;
+}

runners/agent-runner/test/memory-selection.test.ts

@@ -0,0 +1,43 @@
+import { describe, expect, it } from 'vitest';
+
+import { selectCompactMemoriesFromSummary } from '../src/memory-selection.js';
+
+describe('memory selection', () => {
+  it('keeps stable room memories and drops transient status lines', () => {
+    const selected = selectCompactMemoriesFromSummary(
+      [
+        '방 메모리는 새 세션 시작 시에만 주입한다.',
+        '테스트 599개 통과.',
+        '사용자는 수동 명령보다 자동 기억 형성을 원한다.',
+      ].join(' '),
+      'room:ejclaw',
+    );
+
+    expect(selected).toHaveLength(2);
+    expect(selected[0].content).toBe('방 메모리는 새 세션 시작 시에만 주입한다.');
+    expect(selected[0].memoryKind).toBe('room_norm');
+    expect(selected[1].content).toBe('사용자는 수동 명령보다 자동 기억 형성을 원한다.');
+    expect(selected[1].memoryKind).toBe('preference');
+    expect(selected.every((memory) => memory.keywords.includes('room:ejclaw'))).toBe(true);
+  });
+
+  it('returns no memories for purely operational summaries', () => {
+    const selected = selectCompactMemoriesFromSummary(
+      '메멘토 대체 v1 로컬 구현은 끝냈습니다. 테스트 599개 통과.',
+      'room:ejclaw',
+    );
+
+    expect(selected).toEqual([]);
+  });
+
+  it('keeps stable rule sentences even when they contain operational words', () => {
+    const selected = selectCompactMemoriesFromSummary(
+      '배포 전에 항상 테스트를 돌리는 것이 원칙이다.',
+      'room:ejclaw',
+    );
+
+    expect(selected).toHaveLength(1);
+    expect(selected[0].content).toBe('배포 전에 항상 테스트를 돌리는 것이 원칙이다.');
+    expect(selected[0].memoryKind).toBe('room_norm');
+  });
+});