test: dedupe rename-collapsed env-var setup in lifeops + isolated-config

Same milady→eliza collapse pattern surfaced in additional test files:

- apps/app-lifeops/test/lifeops-gmail-chat.live.e2e.test.ts: duplicate
  ELIZA_STATE_DIR in saveEnv args + duplicate process.env assignments
- apps/app-lifeops/test/book-travel.approval.integration.test.ts: same
  duplicate saveEnv arg + duplicate assignment
- packages/app-core/test/helpers/isolated-config.ts: duplicate `const
  previousElizaConfigPath` declaration (would fail TS parse for any
  consumer that imports it) + duplicate restore-block

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Shaw

apps/app-lifeops/test/book-travel.approval.integration.test.ts

@@ -415,7 +415,6 @@ function installApprovalResolutionModelStub(requestId: string, reason: string) {
 
 beforeAll(async () => {
   envBackup = saveEnv(
-    "ELIZA_STATE_DIR",
     "ELIZA_STATE_DIR",
     "DUFFEL_API_KEY",
     "ELIZA_DUFFEL_DIRECT",
@@ -424,7 +423,6 @@ beforeAll(async () => {
     path.join(os.tmpdir(), "book-travel-approval-"),
   );
   process.env.ELIZA_STATE_DIR = stateDir;
-  process.env.ELIZA_STATE_DIR = stateDir;
   process.env.DUFFEL_API_KEY = "duffel-test-key";
   process.env.ELIZA_DUFFEL_DIRECT = "1";
 

apps/app-lifeops/test/lifeops-gmail-chat.live.e2e.test.ts

@@ -219,7 +219,6 @@ async function startLiveServer(): Promise<StartedLiveServer> {
   const envBackup = saveEnv(
     ...Object.keys(LIVE_PROVIDER?.env ?? {}),
     "ELIZA_STATE_DIR",
-    "ELIZA_STATE_DIR",
     "ELIZA_GOOGLE_OAUTH_DESKTOP_CLIENT_ID",
     "PGLITE_DATA_DIR",
   );
@@ -228,7 +227,6 @@ async function startLiveServer(): Promise<StartedLiveServer> {
     process.env[key] = value;
   }
   process.env.ELIZA_STATE_DIR = stateDir;
-  process.env.ELIZA_STATE_DIR = stateDir;
   process.env.ELIZA_GOOGLE_OAUTH_DESKTOP_CLIENT_ID = GOOGLE_CLIENT_ID;
 
   const runtimeResult = await createLifeOpsTestRuntime({

packages/app-core/test/helpers/isolated-config.ts

@@ -14,9 +14,7 @@ export function useIsolatedConfigEnv(
   const tempDir = fs.mkdtempSync(path.join(os.tmpdir(), prefix));
   const configPath = path.join(tempDir, "eliza.json");
   const previousElizaConfigPath = process.env.ELIZA_CONFIG_PATH;
-  const previousElizaConfigPath = process.env.ELIZA_CONFIG_PATH;
 
-  process.env.ELIZA_CONFIG_PATH = configPath;
   process.env.ELIZA_CONFIG_PATH = configPath;
 
   return {
@@ -28,12 +26,6 @@ export function useIsolatedConfigEnv(
         process.env.ELIZA_CONFIG_PATH = previousElizaConfigPath;
       }
 
-      if (previousElizaConfigPath === undefined) {
-        delete process.env.ELIZA_CONFIG_PATH;
-      } else {
-        process.env.ELIZA_CONFIG_PATH = previousElizaConfigPath;
-      }
-
       await fsp
         .rm(tempDir, { recursive: true, force: true })
         .catch(() => undefined);