fix: harden production chat runtime

local-agent/server.mjs

@@ -5,7 +5,7 @@ import { createServer } from "node:http";
 import { access, readFile, readdir, rm } from "node:fs/promises";
 import os from "node:os";
 import { join, resolve } from "node:path";
-import { discoverCodexProjectCandidates } from "./codex-session-discovery.mjs";
+import { discoverCodexProjectCandidatesInWorker } from "./codex-session-discovery.mjs";
 import { buildCodexTaskExecution } from "./codex-task-runner.mjs";
 
 async function loadConfig(configPath) {
@@ -24,7 +24,7 @@ async function resolveHeartbeatProjects(config, runtime) {
   }
 
   try {
-    const discovered = await discoverCodexProjectCandidates({
+    const discovered = await discoverCodexProjectCandidatesInWorker({
       stateDbPath: config.codexStateDbPath,
       logsDbPath: config.codexLogsDbPath,
       sessionIndexPath: config.codexSessionIndexPath,