fix(runtime): guard carry-forward prompts and support inbound IPC injection

src/message-runtime-prompts.test.ts

@@ -0,0 +1,97 @@
+import { describe, expect, it } from 'vitest';
+
+import {
+  buildOwnerPendingPrompt,
+  buildPairedTurnPrompt,
+  buildReviewerPendingPrompt,
+} from './message-runtime-prompts.js';
+import type { NewMessage, PairedTurnOutput } from './types.js';
+
+const CARRY_FORWARD_MARKER =
+  '[Carried forward context from the previous task: latest owner final]';
+
+function makeHumanMessage(content: string): NewMessage {
+  return {
+    id: `msg-${content}`,
+    chat_jid: 'group@test',
+    sender: 'user@test',
+    sender_name: 'User',
+    content,
+    timestamp: '2026-04-20T01:00:00.000Z',
+    is_bot_message: false,
+    is_from_me: false,
+  };
+}
+
+function makeTurnOutput(outputText: string): PairedTurnOutput {
+  return {
+    id: 1,
+    task_id: 'task-1',
+    turn_number: 0,
+    role: 'owner',
+    output_text: outputText,
+    created_at: '2026-04-20T00:59:00.000Z',
+  };
+}
+
+describe('message-runtime-prompts carry-forward guidance', () => {
+  it('prepends a carry-forward warning to paired turn prompts', () => {
+    const prompt = buildPairedTurnPrompt({
+      taskId: 'task-1',
+      chatJid: 'group@test',
+      timezone: 'UTC',
+      missedMessages: [makeHumanMessage('새 질문')],
+      labeledFallbackMessages: [makeHumanMessage('새 질문')],
+      turnOutputs: [
+        makeTurnOutput(`${CARRY_FORWARD_MARKER}\nDONE\n이전 owner final`),
+      ],
+    });
+
+    expect(prompt.startsWith('System note:\nIf you see a message beginning with')).toBe(true);
+    expect(prompt).toContain(CARRY_FORWARD_MARKER);
+    expect(prompt).toContain('Respond only to the latest human request and the current task.');
+  });
+
+  it('prepends a carry-forward warning to reviewer pending prompts', () => {
+    const prompt = buildReviewerPendingPrompt({
+      chatJid: 'group@test',
+      timezone: 'UTC',
+      turnOutputs: [
+        makeTurnOutput(`${CARRY_FORWARD_MARKER}\nDONE\n이전 owner final`),
+      ],
+      recentHumanMessages: [makeHumanMessage('이제 새 질문')],
+      lastHumanMessage: '이제 새 질문',
+    });
+
+    expect(prompt.startsWith('System note:\nIf you see a message beginning with')).toBe(true);
+    expect(prompt).toContain('Do not repeat, continue, or answer that carried-forward final directly.');
+  });
+
+  it('prepends a carry-forward warning to owner pending prompts', () => {
+    const prompt = buildOwnerPendingPrompt({
+      chatJid: 'group@test',
+      timezone: 'UTC',
+      turnOutputs: [
+        makeTurnOutput(`${CARRY_FORWARD_MARKER}\nDONE\n이전 owner final`),
+      ],
+      recentHumanMessages: [makeHumanMessage('새 owner 질문')],
+      lastHumanMessage: '새 owner 질문',
+    });
+
+    expect(prompt.startsWith('System note:\nIf you see a message beginning with')).toBe(true);
+    expect(prompt).toContain('Respond only to the latest human request and the current task.');
+  });
+
+  it('does not prepend the warning when there is no carried-forward turn output', () => {
+    const prompt = buildPairedTurnPrompt({
+      taskId: 'task-1',
+      chatJid: 'group@test',
+      timezone: 'UTC',
+      missedMessages: [makeHumanMessage('그냥 새 질문')],
+      labeledFallbackMessages: [makeHumanMessage('그냥 새 질문')],
+      turnOutputs: [makeTurnOutput('DONE\n일반 owner final')],
+    });
+
+    expect(prompt.startsWith('System note:\nIf you see a message beginning with')).toBe(false);
+  });
+});