diff --git a/extensions/acpx/src/acpx-runtime-compat.d.ts b/extensions/acpx/src/acpx-runtime-compat.d.ts
deleted file mode 100644
index 8a31274ca798..000000000000
--- a/extensions/acpx/src/acpx-runtime-compat.d.ts
+++ /dev/null
@@ -1,65 +0,0 @@
-declare module "acpx/runtime" {
-  export const ACPX_BACKEND_ID: string;
-
-  export type AcpRuntimeDoctorReport = import("../runtime-api.js").AcpRuntimeDoctorReport;
-  export type AcpRuntimeEnsureInput = import("../runtime-api.js").AcpRuntimeEnsureInput;
-  export type AcpRuntimeEvent = import("../runtime-api.js").AcpRuntimeEvent;
-  export type AcpRuntimeHandle = import("../runtime-api.js").AcpRuntimeHandle;
-  export type AcpRuntimeCapabilities = import("../runtime-api.js").AcpRuntimeCapabilities;
-  export type AcpRuntimeStatus = import("../runtime-api.js").AcpRuntimeStatus;
-  export type AcpRuntimeTurn = import("../runtime-api.js").AcpRuntimeTurn;
-  export type AcpRuntimeTurnInput = import("../runtime-api.js").AcpRuntimeTurnInput;
-  export type AcpRuntimeTurnResult = import("../runtime-api.js").AcpRuntimeTurnResult;
-
-  export type AcpAgentRegistry = {
-    resolve(agent: string): string | undefined;
-    list(): string[];
-  };
-
-  export type AcpSessionRecord = Record<string, unknown>;
-
-  export type AcpSessionStore = {
-    load(sessionId: string): Promise<AcpSessionRecord | undefined>;
-    save(record: AcpSessionRecord): Promise<void>;
-  };
-
-  export type AcpRuntimeOptions = {
-    cwd: string;
-    sessionStore: AcpSessionStore;
-    agentRegistry: AcpAgentRegistry;
-    probeAgent?: string;
-    mcpServers?: unknown;
-    permissionMode?: unknown;
-    nonInteractivePermissions?: unknown;
-    timeoutMs?: number;
-    probeAgent?: string;
-  };
-
-  export class AcpxRuntime {
-    constructor(options: AcpRuntimeOptions, testOptions?: unknown);
-    isHealthy(): boolean;
-    probeAvailability(): Promise<void>;
-    doctor(): Promise<AcpRuntimeDoctorReport>;
-    ensureSession(input: AcpRuntimeEnsureInput): Promise<AcpRuntimeHandle>;
-    startTurn(input: AcpRuntimeTurnInput): AcpRuntimeTurn;
-    runTurn(input: AcpRuntimeTurnInput): AsyncIterable<AcpRuntimeEvent>;
-    getCapabilities(input?: {
-      handle?: AcpRuntimeHandle;
-    }): AcpRuntimeCapabilities | Promise<AcpRuntimeCapabilities>;
-    getStatus(input: { handle: AcpRuntimeHandle; signal?: AbortSignal }): Promise<AcpRuntimeStatus>;
-    setMode(input: { handle: AcpRuntimeHandle; mode: string }): Promise<void>;
-    setConfigOption(input: { handle: AcpRuntimeHandle; key: string; value: string }): Promise<void>;
-    cancel(input: { handle: AcpRuntimeHandle; reason?: string }): Promise<void>;
-    close(input: {
-      handle: AcpRuntimeHandle;
-      reason?: string;
-      discardPersistentState?: boolean;
-    }): Promise<void>;
-  }
-
-  export function createAcpRuntime(...args: unknown[]): AcpxRuntime;
-  export function createAgentRegistry(params: { overrides?: unknown }): AcpAgentRegistry;
-  export function createFileSessionStore(params: { stateDir: string }): AcpSessionStore;
-  export function decodeAcpxRuntimeHandleState(...args: unknown[]): unknown;
-  export function encodeAcpxRuntimeHandleState(...args: unknown[]): unknown;
-}
diff --git a/extensions/acpx/src/runtime.ts b/extensions/acpx/src/runtime.ts
index fdbafbc7ec75..f3e72bd49676 100644
--- a/extensions/acpx/src/runtime.ts
+++ b/extensions/acpx/src/runtime.ts
@@ -549,16 +549,15 @@ function appendCodexAcpConfigOverrides(command: string, override: CodexAcpModelO
 function createModelScopedAgentRegistry(params: {
   agentRegistry: AcpAgentRegistry;
   scope: AsyncLocalStorage<CodexAcpModelOverride | undefined>;
-  leaseCommand: (command: string | undefined) => string | undefined;
+  leaseCommand: (command: string) => string;
 }): AcpAgentRegistry {
   return {
-    resolve(agentName: string): string | undefined {
+    resolve(agentName: string): string {
       const command = params.agentRegistry.resolve(agentName);
       const override = params.scope.getStore();
       if (
         !override ||
         normalizeAgentName(agentName) !== CODEX_ACP_AGENT_ID ||
-        typeof command !== "string" ||
         !isCodexAcpCommand(command)
       ) {
         return params.leaseCommand(command);
@@ -700,9 +699,9 @@ export class AcpxRuntime implements AcpRuntime {
     });
   }
 
-  private commandWithLaunchLease(command: string | undefined): string | undefined {
+  private commandWithLaunchLease(command: string): string {
     const launch = this.launchLeaseScope.getStore();
-    if (!command || !launch) {
+    if (!launch) {
       return command;
     }
     launch.stableCommand = command;
diff --git a/extensions/amazon-bedrock-mantle/bedrock-token-generator.d.ts b/extensions/amazon-bedrock-mantle/bedrock-token-generator.d.ts
deleted file mode 100644
index 5f4d4244e676..000000000000
--- a/extensions/amazon-bedrock-mantle/bedrock-token-generator.d.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-declare module "@aws/bedrock-token-generator" {
-  export function getTokenProvider(opts?: {
-    region?: string;
-    expiresInSeconds?: number;
-  }): () => Promise<string>;
-}
diff --git a/extensions/anthropic/cli-backend-api.ts b/extensions/anthropic/cli-backend-api.ts
deleted file mode 100644
index ce54b5480f46..000000000000
--- a/extensions/anthropic/cli-backend-api.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-export { buildAnthropicCliBackend } from "./cli-backend.js";
-export {
-  CLAUDE_CLI_BACKEND_ID,
-  isClaudeCliProvider,
-  normalizeClaudeBackendConfig,
-} from "./cli-shared.js";
diff --git a/extensions/browser/browser-runtime-api.ts b/extensions/browser/browser-runtime-api.ts
deleted file mode 100644
index 442e4ae4bca9..000000000000
--- a/extensions/browser/browser-runtime-api.ts
+++ /dev/null
@@ -1 +0,0 @@
-export * from "./src/browser-runtime.js";
diff --git a/extensions/feishu/src/monitor.reaction.lifecycle.test-support.ts b/extensions/feishu/src/monitor.reaction.lifecycle.test-support.ts
deleted file mode 100644
index e449946715ba..000000000000
--- a/extensions/feishu/src/monitor.reaction.lifecycle.test-support.ts
+++ /dev/null
@@ -1,68 +0,0 @@
-import { describe, expect, it } from "vitest";
-import type { ClawdbotConfig } from "../runtime-api.js";
-import {
-  resolveReactionSyntheticEvent,
-  type FeishuReactionCreatedEvent,
-} from "./monitor.account.js";
-
-const cfg = {} as ClawdbotConfig;
-
-function makeReactionEvent(
-  overrides: Partial<FeishuReactionCreatedEvent> = {},
-): FeishuReactionCreatedEvent {
-  return {
-    message_id: "om_msg1",
-    reaction_type: { emoji_type: "THUMBSUP" },
-    operator_type: "user",
-    user_id: { open_id: "ou_user1" },
-    ...overrides,
-  };
-}
-
-describe("Feishu reaction lifecycle", () => {
-  it("builds a created synthetic interaction payload", async () => {
-    const result = await resolveReactionSyntheticEvent({
-      cfg,
-      accountId: "default",
-      event: makeReactionEvent({ user_id: { open_id: "ou_user1", user_id: "on_user1" } }),
-      botOpenId: "ou_bot",
-      fetchMessage: async () => ({
-        messageId: "om_msg1",
-        chatId: "oc_group_1",
-        chatType: "group",
-        senderOpenId: "ou_bot",
-        senderType: "app",
-        content: "hello",
-        contentType: "text",
-      }),
-      uuid: () => "fixed-uuid",
-    });
-
-    expect(result?.sender.sender_id).toEqual({ open_id: "ou_user1", user_id: "on_user1" });
-    expect(result?.message.content).toBe('{"text":"[reacted with THUMBSUP to message om_msg1]"}');
-  });
-
-  it("builds a deleted synthetic interaction payload", async () => {
-    const result = await resolveReactionSyntheticEvent({
-      cfg,
-      accountId: "default",
-      event: makeReactionEvent(),
-      botOpenId: "ou_bot",
-      fetchMessage: async () => ({
-        messageId: "om_msg1",
-        chatId: "oc_group_1",
-        chatType: "group",
-        senderOpenId: "ou_bot",
-        senderType: "app",
-        content: "hello",
-        contentType: "text",
-      }),
-      uuid: () => "fixed-uuid",
-      action: "deleted",
-    });
-
-    expect(result?.message.content).toBe(
-      '{"text":"[removed reaction THUMBSUP from message om_msg1]"}',
-    );
-  });
-});
diff --git a/extensions/imessage/src/conversation-bindings.ts b/extensions/imessage/src/conversation-bindings.ts
index 3c2f9eb2861f..96b09c9e8eaa 100644
--- a/extensions/imessage/src/conversation-bindings.ts
+++ b/extensions/imessage/src/conversation-bindings.ts
@@ -44,4 +44,3 @@ export const testing = {
     });
   },
 };
-export { testing as __testing };
diff --git a/extensions/xai/model-compat.ts b/extensions/xai/model-compat.ts
index 3fbd0dc0da85..51445c1fc8ca 100644
--- a/extensions/xai/model-compat.ts
+++ b/extensions/xai/model-compat.ts
@@ -8,7 +8,7 @@ export { normalizeXaiModelId as normalizeNativeXaiModelId } from "./model-id.js"
 export const XAI_TOOL_SCHEMA_PROFILE = "xai";
 export const HTML_ENTITY_TOOL_CALL_ARGUMENTS_ENCODING = "html-entities";
 
-export const XAI_UNSUPPORTED_SCHEMA_KEYWORDS = new Set([
+const XAI_UNSUPPORTED_SCHEMA_KEYWORDS = new Set([
   "minLength",
   "maxLength",
   "minItems",
@@ -17,7 +17,7 @@ export const XAI_UNSUPPORTED_SCHEMA_KEYWORDS = new Set([
   "maxContains",
 ]);
 
-export function resolveXaiModelCompatPatch(): ModelCompatConfig {
+function resolveXaiModelCompatPatch(): ModelCompatConfig {
   return {
     toolSchemaProfile: XAI_TOOL_SCHEMA_PROFILE,
     unsupportedToolSchemaKeywords: Array.from(XAI_UNSUPPORTED_SCHEMA_KEYWORDS),
diff --git a/src/agents/tool-policy.conformance.ts b/src/agents/tool-policy.conformance.ts
deleted file mode 100644
index f26e83f5db8e..000000000000
--- a/src/agents/tool-policy.conformance.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Conformance snapshot for tool policy.
- *
- * Security note:
- * - This is static, build-time information (no runtime I/O, no network exposure).
- * - Intended for CI/tools to detect drift between the implementation policy and
- *   the formal models/extractors.
- */
-
-import { TOOL_GROUPS } from "./tool-policy.js";
-
-// Tool name aliases are intentionally not exported from tool-policy today.
-// Keep the conformance snapshot focused on exported policy constants.
-
-export const TOOL_POLICY_CONFORMANCE = {
-  toolGroups: TOOL_GROUPS,
-} as const;
diff --git a/src/agents/tool-policy.test.ts b/src/agents/tool-policy.test.ts
index 49b33be0b42f..1d84bfcb22dd 100644
--- a/src/agents/tool-policy.test.ts
+++ b/src/agents/tool-policy.test.ts
@@ -4,7 +4,6 @@ import { pickSandboxToolPolicy } from "./sandbox-tool-policy.js";
 import { isToolAllowed, resolveSandboxToolPolicyForAgent } from "./sandbox/tool-policy.js";
 import type { SandboxToolPolicy } from "./sandbox/types.js";
 import { isToolAllowedByPolicyName } from "./tool-policy-match.js";
-import { TOOL_POLICY_CONFORMANCE } from "./tool-policy.conformance.js";
 import {
   collectExplicitAllowlist,
   DEFAULT_PLUGIN_TOOLS_ALLOWLIST_ENTRY,
@@ -78,17 +77,6 @@ describe("tool-policy", () => {
   });
 });
 
-describe("TOOL_POLICY_CONFORMANCE", () => {
-  it("matches exported TOOL_GROUPS exactly", () => {
-    expect(TOOL_POLICY_CONFORMANCE.toolGroups).toEqual(TOOL_GROUPS);
-  });
-
-  it("is JSON-serializable", () => {
-    const serialized = JSON.stringify(TOOL_POLICY_CONFORMANCE);
-    expect(JSON.parse(serialized)).toEqual({ toolGroups: TOOL_GROUPS });
-  });
-});
-
 describe("sandbox tool policy", () => {
   it("allows all tools with * allow", () => {
     const policy: SandboxToolPolicy = { allow: ["*"], deny: [] };
diff --git a/src/channels/plugins/contracts/test-helpers/imessage-test-plugin.ts b/src/channels/plugins/contracts/test-helpers/imessage-test-plugin.ts
deleted file mode 100644
index 658d7b90671e..000000000000
--- a/src/channels/plugins/contracts/test-helpers/imessage-test-plugin.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-import type { ChannelOutboundAdapter } from "openclaw/plugin-sdk/channel-contract";
-import type { ChannelPlugin } from "openclaw/plugin-sdk/channel-plugin-common";
-import { loadBundledPluginTestApiSync } from "../../../../test-utils/bundled-plugin-public-surface.js";
-
-type CreateIMessageTestPlugin = (params?: { outbound?: ChannelOutboundAdapter }) => ChannelPlugin;
-
-let createIMessageTestPluginCache: CreateIMessageTestPlugin | undefined;
-
-function getCreateIMessageTestPlugin(): CreateIMessageTestPlugin {
-  if (!createIMessageTestPluginCache) {
-    ({ createIMessageTestPlugin: createIMessageTestPluginCache } = loadBundledPluginTestApiSync<{
-      createIMessageTestPlugin: CreateIMessageTestPlugin;
-    }>("imessage"));
-  }
-  return createIMessageTestPluginCache;
-}
-
-export const createIMessageTestPlugin: CreateIMessageTestPlugin = (...args) =>
-  getCreateIMessageTestPlugin()(...args);
diff --git a/src/test-utils/jiti-runtime.ts b/src/test-utils/jiti-runtime.ts
deleted file mode 100644
index c11ad43be660..000000000000
--- a/src/test-utils/jiti-runtime.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export function shouldExpectNativeJitiForJavaScriptTestRuntime(): boolean {
-  return typeof (process.versions as { bun?: string }).bun !== "string";
-}
diff --git a/src/test-utils/model-fallback.mock.ts b/src/test-utils/model-fallback.mock.ts
deleted file mode 100644
index 4431db3db965..000000000000
--- a/src/test-utils/model-fallback.mock.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-export async function runWithModelFallback(params: {
-  provider: string;
-  model: string;
-  run: (
-    provider: string,
-    model: string,
-    options?: { allowTransientCooldownProbe?: boolean },
-  ) => Promise<unknown>;
-}) {
-  return {
-    result: await params.run(params.provider, params.model),
-    provider: params.provider,
-    model: params.model,
-  };
-}
diff --git a/test/helpers/fast-short-timeouts.ts b/test/helpers/fast-short-timeouts.ts
deleted file mode 100644
index 32fa2bd0d90e..000000000000
--- a/test/helpers/fast-short-timeouts.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { setTimeout as nativeSetTimeout } from "node:timers";
-import { vi } from "vitest";
-
-export function useFastShortTimeouts(maxDelayMs = 2000): () => void {
-  const spy = vi.spyOn(global, "setTimeout").mockImplementation(((
-    handler: TimerHandler,
-    timeout?: number,
-    ...args: unknown[]
-  ) => {
-    const delay = typeof timeout === "number" ? timeout : 0;
-    if (delay > 0 && delay <= maxDelayMs) {
-      return nativeSetTimeout(handler, 0, ...args);
-    }
-    return nativeSetTimeout(handler, delay, ...args);
-  }) as typeof setTimeout);
-  return () => spy.mockRestore();
-}