paired: disable latest owner final carry-forward by default

src/config.test.ts

@@ -29,6 +29,7 @@ describe('config/env loading', () => {
     delete process.env.DISCORD_CODEX_MAIN_BOT_TOKEN;
     delete process.env.DISCORD_REVIEW_BOT_TOKEN;
     delete process.env.DISCORD_CODEX_REVIEW_BOT_TOKEN;
+    delete process.env.PAIRED_CARRY_FORWARD_LATEST_OWNER_FINAL;
     delete process.env.SESSION_COMMAND_USER_IDS;
     vi.resetModules();
   });
@@ -102,6 +103,16 @@ describe('config/env loading', () => {
     expect(config.TIMEZONE).toBe('UTC');
   });
 
+  it('defaults latest-owner-final carry-forward to disabled and honors explicit opt-in', async () => {
+    let config = await import('./config.js');
+    expect(config.PAIRED_CARRY_FORWARD_LATEST_OWNER_FINAL).toBe(false);
+
+    vi.resetModules();
+    process.env.PAIRED_CARRY_FORWARD_LATEST_OWNER_FINAL = 'true';
+    config = await import('./config.js');
+    expect(config.PAIRED_CARRY_FORWARD_LATEST_OWNER_FINAL).toBe(true);
+  });
+
   it('fails fast when a legacy Discord token alias is configured', async () => {
     process.env.DISCORD_BOT_TOKEN = 'legacy-owner-token';
 

src/config.ts

@@ -76,6 +76,10 @@ export const ARBITER_AGENT_TYPE = CONFIG.paired.arbiterAgentType;
 /** Service ID for the arbiter. Defaults to codex-review for internal routing when arbiter is enabled. */
 export const ARBITER_SERVICE_ID = CONFIG.paired.arbiterServiceId;
 
+/** Whether to re-inject the previous task's latest owner final into a superseding task. Default: false. */
+export const PAIRED_CARRY_FORWARD_LATEST_OWNER_FINAL =
+  CONFIG.paired.carryForwardLatestOwnerFinal;
+
 /** Language for agent responses. When set, a language instruction is appended to all paired room prompts. */
 export const AGENT_LANGUAGE = CONFIG.paired.agentLanguage;
 

src/config/load-config.ts

@@ -223,6 +223,10 @@ export function loadConfig(): AppConfig {
       arbiterServiceId: arbiterAgentType
         ? (readText('ARBITER_SERVICE_ID') ?? codexReviewServiceId)
         : null,
+      carryForwardLatestOwnerFinal: readBoolean(
+        'PAIRED_CARRY_FORWARD_LATEST_OWNER_FINAL',
+        false,
+      ),
       agentLanguage: readText('AGENT_LANGUAGE') ?? '',
       arbiterDeadlockThreshold: readInteger('ARBITER_DEADLOCK_THRESHOLD', 2),
       maxRoundTrips,

src/config/schema.ts

@@ -53,6 +53,7 @@ export interface AppConfig {
     reviewerServiceIdForType: string;
     arbiterAgentType?: AgentType;
     arbiterServiceId: string | null;
+    carryForwardLatestOwnerFinal: boolean;
     agentLanguage: string;
     arbiterDeadlockThreshold: number;
     maxRoundTrips: number;

src/paired-execution-context.test.ts

@@ -253,7 +253,7 @@ describe('paired execution context', () => {
     });
   });
 
-  it('carries forward the latest owner final when a merge_ready task is superseded by new human input', () => {
+  it('does not carry forward the latest owner final by default when a merge_ready task is superseded by new human input', () => {
     const supersededTask = buildPairedTask({
       id: 'task-superseded',
       status: 'merge_ready',
@@ -290,13 +290,7 @@ describe('paired execution context', () => {
 
     expect(db.createPairedTask).toHaveBeenCalledTimes(1);
     expect(result.supersededTask).toEqual(supersededTask);
-    expect(db.insertPairedTurnOutput).toHaveBeenCalledWith(
-      expect.any(String),
-      0,
-      'owner',
-      '[Carried forward context from the previous task: latest owner final]\nDONE_WITH_CONCERNS\n이전 task owner final',
-      '2026-03-28T00:01:00.000Z',
-    );
+    expect(db.insertPairedTurnOutput).not.toHaveBeenCalled();
   });
 
   it('uses room role context agent overrides when creating a paired task', () => {

src/paired-execution-context.ts

@@ -14,6 +14,7 @@ import {
   CODEX_MAIN_SERVICE_ID,
   CODEX_REVIEW_SERVICE_ID,
   DATA_DIR,
+  PAIRED_CARRY_FORWARD_LATEST_OWNER_FINAL,
   PAIRED_MAX_ROUND_TRIPS,
   REVIEWER_AGENT_TYPE,
 } from './config.js';
@@ -207,6 +208,10 @@ function carryForwardLatestOwnerFinal(args: {
   sourceTask: PairedTask;
   targetTask: PairedTask;
 }): void {
+  if (!PAIRED_CARRY_FORWARD_LATEST_OWNER_FINAL) {
+    return;
+  }
+
   const latestOwnerFinal = getLatestTurnOutputByRole(
     args.sourceTask.id,
     'owner',