diff --git a/extensions/codex/harness.ts b/extensions/codex/harness.ts
index ba4e0141acc..db7109ff71f 100644
--- a/extensions/codex/harness.ts
+++ b/extensions/codex/harness.ts
@@ -1,13 +1,13 @@
 import type { AgentHarness } from "openclaw/plugin-sdk/agent-harness";
-import { listCodexAppServerModels } from "./app-server/client.js";
+import { listCodexAppServerModels } from "./src/app-server/client.js";
 import type {
   CodexAppServerListModelsOptions,
   CodexAppServerModel,
   CodexAppServerModelListResult,
-} from "./app-server/client.js";
-import { maybeCompactCodexAppServerSession } from "./app-server/compact.js";
-import { runCodexAppServerAttempt } from "./app-server/run-attempt.js";
-import { clearCodexAppServerBinding } from "./app-server/session-binding.js";
+} from "./src/app-server/client.js";
+import { maybeCompactCodexAppServerSession } from "./src/app-server/compact.js";
+import { runCodexAppServerAttempt } from "./src/app-server/run-attempt.js";
+import { clearCodexAppServerBinding } from "./src/app-server/session-binding.js";
 
 const DEFAULT_CODEX_HARNESS_PROVIDER_IDS = new Set(["codex", "openai-codex"]);
 
diff --git a/extensions/codex/app-server/approval-bridge.test.ts b/extensions/codex/src/app-server/approval-bridge.test.ts
similarity index 98%
rename from extensions/codex/app-server/approval-bridge.test.ts
rename to extensions/codex/src/app-server/approval-bridge.test.ts
index 09bebfb516a..e4d42b39bfb 100644
--- a/extensions/codex/app-server/approval-bridge.test.ts
+++ b/extensions/codex/src/app-server/approval-bridge.test.ts
@@ -38,7 +38,7 @@ describe("Codex app-server approval bridge", () => {
         threadId: "thread-1",
         turnId: "turn-1",
         itemId: "cmd-1",
-        command: "pnpm test extensions/codex/app-server",
+        command: "pnpm test extensions/codex/src/app-server",
       },
       paramsForRun: params,
       threadId: "thread-1",
diff --git a/extensions/codex/app-server/approval-bridge.ts b/extensions/codex/src/app-server/approval-bridge.ts
similarity index 100%
rename from extensions/codex/app-server/approval-bridge.ts
rename to extensions/codex/src/app-server/approval-bridge.ts
diff --git a/extensions/codex/app-server/client.test.ts b/extensions/codex/src/app-server/client.test.ts
similarity index 100%
rename from extensions/codex/app-server/client.test.ts
rename to extensions/codex/src/app-server/client.test.ts
diff --git a/extensions/codex/app-server/client.ts b/extensions/codex/src/app-server/client.ts
similarity index 100%
rename from extensions/codex/app-server/client.ts
rename to extensions/codex/src/app-server/client.ts
diff --git a/extensions/codex/app-server/compact.test.ts b/extensions/codex/src/app-server/compact.test.ts
similarity index 100%
rename from extensions/codex/app-server/compact.test.ts
rename to extensions/codex/src/app-server/compact.test.ts
diff --git a/extensions/codex/app-server/compact.ts b/extensions/codex/src/app-server/compact.ts
similarity index 100%
rename from extensions/codex/app-server/compact.ts
rename to extensions/codex/src/app-server/compact.ts
diff --git a/extensions/codex/app-server/dynamic-tools.test.ts b/extensions/codex/src/app-server/dynamic-tools.test.ts
similarity index 100%
rename from extensions/codex/app-server/dynamic-tools.test.ts
rename to extensions/codex/src/app-server/dynamic-tools.test.ts
diff --git a/extensions/codex/app-server/dynamic-tools.ts b/extensions/codex/src/app-server/dynamic-tools.ts
similarity index 100%
rename from extensions/codex/app-server/dynamic-tools.ts
rename to extensions/codex/src/app-server/dynamic-tools.ts
diff --git a/extensions/codex/app-server/event-projector.test.ts b/extensions/codex/src/app-server/event-projector.test.ts
similarity index 100%
rename from extensions/codex/app-server/event-projector.test.ts
rename to extensions/codex/src/app-server/event-projector.test.ts
diff --git a/extensions/codex/app-server/event-projector.ts b/extensions/codex/src/app-server/event-projector.ts
similarity index 100%
rename from extensions/codex/app-server/event-projector.ts
rename to extensions/codex/src/app-server/event-projector.ts
diff --git a/extensions/codex/app-server/protocol.ts b/extensions/codex/src/app-server/protocol.ts
similarity index 100%
rename from extensions/codex/app-server/protocol.ts
rename to extensions/codex/src/app-server/protocol.ts
diff --git a/extensions/codex/app-server/run-attempt.test.ts b/extensions/codex/src/app-server/run-attempt.test.ts
similarity index 100%
rename from extensions/codex/app-server/run-attempt.test.ts
rename to extensions/codex/src/app-server/run-attempt.test.ts
diff --git a/extensions/codex/app-server/run-attempt.ts b/extensions/codex/src/app-server/run-attempt.ts
similarity index 100%
rename from extensions/codex/app-server/run-attempt.ts
rename to extensions/codex/src/app-server/run-attempt.ts
diff --git a/extensions/codex/app-server/session-binding.test.ts b/extensions/codex/src/app-server/session-binding.test.ts
similarity index 100%
rename from extensions/codex/app-server/session-binding.test.ts
rename to extensions/codex/src/app-server/session-binding.test.ts
diff --git a/extensions/codex/app-server/session-binding.ts b/extensions/codex/src/app-server/session-binding.ts
similarity index 100%
rename from extensions/codex/app-server/session-binding.ts
rename to extensions/codex/src/app-server/session-binding.ts
diff --git a/extensions/codex/app-server/transcript-mirror.test.ts b/extensions/codex/src/app-server/transcript-mirror.test.ts
similarity index 100%
rename from extensions/codex/app-server/transcript-mirror.test.ts
rename to extensions/codex/src/app-server/transcript-mirror.test.ts
diff --git a/extensions/codex/app-server/transcript-mirror.ts b/extensions/codex/src/app-server/transcript-mirror.ts
similarity index 100%
rename from extensions/codex/app-server/transcript-mirror.ts
rename to extensions/codex/src/app-server/transcript-mirror.ts
diff --git a/extensions/codex/tsconfig.json b/extensions/codex/tsconfig.json
index 530d7fda72f..b8a85a99ac3 100644
--- a/extensions/codex/tsconfig.json
+++ b/extensions/codex/tsconfig.json
@@ -3,6 +3,14 @@
   "compilerOptions": {
     "rootDir": "."
   },
-  "include": ["./*.ts", "./app-server/*.ts"],
-  "exclude": ["./**/*.test.ts", "./dist/**", "./node_modules/**"]
+  "include": ["./*.ts", "./src/**/*.ts"],
+  "exclude": [
+    "./**/*.test.ts",
+    "./dist/**",
+    "./node_modules/**",
+    "./src/test-support/**",
+    "./src/**/*test-helpers.ts",
+    "./src/**/*test-harness.ts",
+    "./src/**/*test-support.ts"
+  ]
 }