fix(codex): pass ccsx resume through to native codex

Closes #1287

src/dispatcher/cli-argument-parser.ts

@@ -43,7 +43,7 @@ export interface DispatcherBootstrap {
  * - setGlobalConfigDir (--config-dir flag)
  * - Cloud-sync warnings
  * - Completion short-circuit via tryHandleRootCommand
- * - Codex native passthrough via execNativeCodexFlagCommand
+ * - Codex native passthrough via execNativeCodexCommand
  *
  * Adapter registration (registerTarget calls) stays in main() because it is
  * singleton wiring with no dependency on the parsed args.
@@ -141,9 +141,9 @@ export async function bootstrapAndParseEarlyCli(rawArgs: string[]): Promise<Disp
     return { args, isCompletionCommand, browserLaunchOverride: undefined, exitNow: true };
   }
 
-  if (shouldPassthroughNativeCodexFlagCommand(args)) {
-    const { execNativeCodexFlagCommand } = await import('./target-executor');
-    execNativeCodexFlagCommand(args);
+  if (shouldPassthroughNativeCodexCommand(args)) {
+    const { execNativeCodexCommand } = await import('./target-executor');
+    execNativeCodexCommand(args);
     return { args, isCompletionCommand, browserLaunchOverride: undefined, exitNow: true };
   }
 
@@ -175,6 +175,7 @@ export const CODEX_RUNTIME_REASONING_LEVELS = new Set([
 ]);
 
 export const CODEX_NATIVE_PASSTHROUGH_FLAGS = new Set(['--help', '-h', '--version', '-v']);
+export const CODEX_NATIVE_PASSTHROUGH_SUBCOMMANDS = new Set(['resume']);
 
 export const NATIVE_CLAUDE_EFFORT_LEVELS = ['low', 'medium', 'high', 'xhigh', 'max'] as const;
 
@@ -314,7 +315,7 @@ export function shouldNormalizeNativeClaudeEffort(
 
 // ========== Native Codex Passthrough ==========
 
-export function shouldPassthroughNativeCodexFlagCommand(args: string[]): boolean {
+export function shouldPassthroughNativeCodexCommand(args: string[]): boolean {
   return getNativeCodexPassthroughArgs(args) !== null;
 }
 
@@ -328,11 +329,17 @@ export function getNativeCodexPassthroughArgs(args: string[]): string[] | null {
   if (CODEX_NATIVE_PASSTHROUGH_FLAGS.has(firstArg)) {
     return targetArgs;
   }
+  if (CODEX_NATIVE_PASSTHROUGH_SUBCOMMANDS.has(firstArg)) {
+    return targetArgs;
+  }
 
   const secondArg = targetArgs[1] || '';
   if (firstArg === 'codex' && CODEX_NATIVE_PASSTHROUGH_FLAGS.has(secondArg)) {
     return targetArgs.slice(1);
   }
+  if (firstArg === 'codex' && CODEX_NATIVE_PASSTHROUGH_SUBCOMMANDS.has(secondArg)) {
+    return targetArgs.slice(1);
+  }
 
   return null;
 }

src/dispatcher/target-executor.ts

@@ -3,7 +3,7 @@
  * and top-level profile dispatcher (Phase E switch).
  *
  * Extracted from src/ccs.ts (lines 291-295, 394-426).
- * Handles direct execution of native Codex flag passthrough (--help, --version, etc.)
+ * Handles direct execution of native Codex passthrough commands (--help, resume, etc.)
  * before the main profile dispatch loop runs.
  *
  * dispatchProfile() collapses the 6-branch switch in main() to a single call.
@@ -29,9 +29,9 @@ export interface ProfileError extends Error {
   suggestions?: string[];
 }
 
-// ========== Native Codex Flag Command Executor ==========
+// ========== Native Codex Command Executor ==========
 
-export function execNativeCodexFlagCommand(args: string[]): void {
+export function execNativeCodexCommand(args: string[]): void {
   const adapter = getTarget('codex');
   if (!adapter) {
     console.error(fail('Target adapter not found for "codex"'));