fix(persist): bound Codex translator receipt scan

src/shared/stale-codex-translator-settings.ts

@@ -1,5 +1,8 @@
 export const CODEX_TRANSLATOR_URL_MARKER = '/api/provider/codex';
 
+const MAX_CODEX_TRANSLATOR_SCAN_DEPTH = 100;
+const MAX_CODEX_TRANSLATOR_SCAN_NODES = 10000;
+
 function formatSettingsPathSegment(basePath: string, segment: string | number): string {
   if (typeof segment === 'number') {
     return `${basePath}[${segment}]`;
@@ -13,23 +16,62 @@ function formatSettingsPathSegment(basePath: string, segment: string | number):
 }
 
 export function findCodexTranslatorUrlPaths(value: unknown, path = ''): string[] {
-  if (typeof value === 'string') {
+  const matches: string[] = [];
-    return value.includes(CODEX_TRANSLATOR_URL_MARKER) ? [path || '(root)'] : [];
+  const stack: Array<{ value: unknown; path: string; depth: number }> = [{ value, path, depth: 0 }];
+  const seen = new WeakSet<object>();
+  let visitedNodes = 0;
+
+  while (stack.length > 0 && visitedNodes < MAX_CODEX_TRANSLATOR_SCAN_NODES) {
+    const item = stack.pop();
+    if (!item) {
+      break;
+    }
+
+    visitedNodes += 1;
+
+    if (typeof item.value === 'string') {
+      if (item.value.includes(CODEX_TRANSLATOR_URL_MARKER)) {
+        matches.push(item.path || '(root)');
+      }
+      continue;
+    }
+
+    if (typeof item.value !== 'object' || item.value === null) {
+      continue;
+    }
+
+    if (seen.has(item.value)) {
+      continue;
+    }
+    seen.add(item.value);
+
+    if (item.depth >= MAX_CODEX_TRANSLATOR_SCAN_DEPTH) {
+      continue;
+    }
+
+    if (Array.isArray(item.value)) {
+      for (let index = item.value.length - 1; index >= 0; index -= 1) {
+        stack.push({
+          value: item.value[index],
+          path: formatSettingsPathSegment(item.path, index),
+          depth: item.depth + 1,
+        });
+      }
+      continue;
+    }
+
+    const entries = Object.entries(item.value);
+    for (let index = entries.length - 1; index >= 0; index -= 1) {
+      const [key, child] = entries[index];
+      stack.push({
+        value: child,
+        path: formatSettingsPathSegment(item.path, key),
+        depth: item.depth + 1,
+      });
+    }
   }
 
-  if (Array.isArray(value)) {
+  return matches;
-    return value.flatMap((item, index) =>
-      findCodexTranslatorUrlPaths(item, formatSettingsPathSegment(path, index))
-    );
-  }
-
-  if (typeof value === 'object' && value !== null) {
-    return Object.entries(value).flatMap(([key, item]) =>
-      findCodexTranslatorUrlPaths(item, formatSettingsPathSegment(path, key))
-    );
-  }
-
-  return [];
 }
 
 export function formatSettingsPathList(paths: string[]): string {

tests/unit/commands/persist-command-handler.test.ts

@@ -415,6 +415,43 @@ describe('persist command Claude extension parity', () => {
     expect(renderedLogs).toContain('Native Codex target: ccsxp or ccs codex --target codex');
   });
 
+  it('does not fail after writing settings when a cleared env value is deeply nested', async () => {
+    await writeUnifiedConfig();
+
+    const settingsPath = path.join(tempRoot, '.claude', 'settings.json');
+    await fs.promises.mkdir(path.dirname(settingsPath), { recursive: true });
+    const deepValue = `${'{"nested":'.repeat(20000)}"leaf"${'}'.repeat(20000)}`;
+    await fs.promises.writeFile(
+      settingsPath,
+      `{"env":{"KEEP_ME":"still-here","ANTHROPIC_AUTH_TOKEN":${deepValue}}}\n`,
+      'utf8'
+    );
+
+    const originalConsoleLog = console.log;
+    const capturedLogs: string[] = [];
+    console.log = (...args: unknown[]) => {
+      capturedLogs.push(args.map((arg) => String(arg)).join(' '));
+    };
+
+    try {
+      await withScopedHome(() => handlePersistCommand(['default', '--yes']));
+    } finally {
+      console.log = originalConsoleLog;
+    }
+
+    const persisted = JSON.parse(await fs.promises.readFile(settingsPath, 'utf8')) as {
+      env: Record<string, string>;
+    };
+
+    expect(persisted.env.KEEP_ME).toBe('still-here');
+    expect(persisted.env.ANTHROPIC_AUTH_TOKEN).toBeUndefined();
+    const renderedLogs = capturedLogs.join('\n');
+    expect(renderedLogs).toContain("Profile 'default' written to");
+    expect(renderedLogs).toContain('Config Receipt');
+    expect(renderedLogs).toContain('Codex translator URL: not found');
+    expect(renderedLogs).not.toContain('Failed to write settings');
+  });
+
   it('warns in the persist receipt when a Codex translator URL remains in settings', async () => {
     await writeUnifiedConfig();
 

tests/unit/shared/stale-codex-translator-settings.test.ts

@@ -31,4 +31,14 @@ describe('stale Codex translator settings scanner', () => {
       '["custom-key"][0]',
     ]);
   });
+
+  it('does not overflow the stack on deeply nested local settings values', () => {
+    let settings: Record<string, unknown> = { value: 'leaf' };
+    for (let depth = 0; depth < 20000; depth += 1) {
+      settings = { nested: settings };
+    }
+
+    expect(() => findCodexTranslatorUrlPaths(settings)).not.toThrow();
+    expect(findCodexTranslatorUrlPaths(settings)).toEqual([]);
+  });
 });