diff --git a/src/infra/boundary-path.ts b/src/infra/boundary-path.ts
index 11d42758926..812642fa10c 100644
--- a/src/infra/boundary-path.ts
+++ b/src/infra/boundary-path.ts
@@ -4,7 +4,7 @@ import os from "node:os";
 import path from "node:path";
 import { isNotFoundPathError, isPathInside } from "./path-guards.js";
 
-export type BoundaryPathIntent = "read" | "write" | "create" | "delete" | "stat";
+type BoundaryPathIntent = "read" | "write" | "create" | "delete" | "stat";
 
 export type BoundaryPathAliasPolicy = {
   allowFinalSymlinkForUnlink?: boolean;
@@ -22,7 +22,7 @@ export const BOUNDARY_PATH_ALIAS_POLICIES = {
   }),
 } as const;
 
-export type ResolveBoundaryPathParams = {
+type ResolveBoundaryPathParams = {
   absolutePath: string;
   rootPath: string;
   boundaryLabel: string;
@@ -32,7 +32,7 @@ export type ResolveBoundaryPathParams = {
   rootCanonicalPath?: string;
 };
 
-export type ResolvedBoundaryPathKind = "missing" | "file" | "directory" | "symlink" | "other";
+type ResolvedBoundaryPathKind = "missing" | "file" | "directory" | "symlink" | "other";
 
 export type ResolvedBoundaryPath = {
   absolutePath: string;
@@ -660,7 +660,7 @@ function buildResolvedBoundaryPath(params: {
   };
 }
 
-export async function resolvePathViaExistingAncestor(targetPath: string): Promise<string> {
+async function resolvePathViaExistingAncestor(targetPath: string): Promise<string> {
   const normalized = path.resolve(targetPath);
   let cursor = normalized;
   const missingSuffix: string[] = [];
diff --git a/src/infra/browser-open.ts b/src/infra/browser-open.ts
index bf9151f1d2a..deb15aaf60e 100644
--- a/src/infra/browser-open.ts
+++ b/src/infra/browser-open.ts
@@ -3,13 +3,13 @@ import { runCommandWithTimeout } from "../process/exec.js";
 import { detectBinary } from "./detect-binary.js";
 import { isWSL } from "./wsl.js";
 
-export type BrowserOpenCommand = {
+type BrowserOpenCommand = {
   argv: string[] | null;
   reason?: string;
   command?: string;
 };
 
-export type BrowserOpenSupport = {
+type BrowserOpenSupport = {
   ok: boolean;
   reason?: string;
   command?: string;
diff --git a/src/infra/channel-approval-auth.ts b/src/infra/channel-approval-auth.ts
index 6793fde928b..1e19ae9a52d 100644
--- a/src/infra/channel-approval-auth.ts
+++ b/src/infra/channel-approval-auth.ts
@@ -3,7 +3,7 @@ import type { OpenClawConfig } from "../config/types.openclaw.js";
 import { isImplicitSameChatApprovalAuthorization } from "../plugin-sdk/approval-auth-helpers.js";
 import { normalizeMessageChannel } from "../utils/message-channel.js";
 
-export type ApprovalCommandAuthorization = {
+type ApprovalCommandAuthorization = {
   authorized: boolean;
   reason?: string;
   explicit: boolean;
diff --git a/src/infra/detect-package-manager.ts b/src/infra/detect-package-manager.ts
index 5f3c9cbc7d6..675d7fa4929 100644
--- a/src/infra/detect-package-manager.ts
+++ b/src/infra/detect-package-manager.ts
@@ -1,7 +1,7 @@
 import fs from "node:fs/promises";
 import path from "node:path";
 
-export type DetectedPackageManager = "pnpm" | "bun" | "npm";
+type DetectedPackageManager = "pnpm" | "bun" | "npm";
 
 export async function detectPackageManager(root: string): Promise<DetectedPackageManager | null> {
   try {
diff --git a/src/infra/diagnostic-error-metadata.ts b/src/infra/diagnostic-error-metadata.ts
index d8692ad8cc0..ab4f7ba2893 100644
--- a/src/infra/diagnostic-error-metadata.ts
+++ b/src/infra/diagnostic-error-metadata.ts
@@ -15,7 +15,7 @@ const PROVIDER_REQUEST_ID_TEXT_PATTERNS = [
   /\((?:request_id|trace_id)\s*:\s*([A-Za-z0-9._:-]{1,128})\)/i,
 ] as const;
 
-export type DiagnosticErrorFailureKind =
+type DiagnosticErrorFailureKind =
   | "aborted"
   | "connection_closed"
   | "connection_reset"
diff --git a/src/infra/diagnostic-trace-context.ts b/src/infra/diagnostic-trace-context.ts
index d7c1cc0f8ac..40536633376 100644
--- a/src/infra/diagnostic-trace-context.ts
+++ b/src/infra/diagnostic-trace-context.ts
@@ -21,7 +21,7 @@ export type DiagnosticTraceContext = {
   readonly traceFlags?: string;
 };
 
-export type DiagnosticTraceContextInput = Partial<DiagnosticTraceContext> & {
+type DiagnosticTraceContextInput = Partial<DiagnosticTraceContext> & {
   traceparent?: string;
 };
 
diff --git a/src/infra/diagnostics-timeline.ts b/src/infra/diagnostics-timeline.ts
index 35602fa3d6d..5b2a179e1a0 100644
--- a/src/infra/diagnostics-timeline.ts
+++ b/src/infra/diagnostics-timeline.ts
@@ -6,9 +6,9 @@ import type { OpenClawConfig } from "../config/types.openclaw.js";
 import { isDiagnosticFlagEnabled } from "./diagnostic-flags.js";
 import { isTruthyEnvValue } from "./env.js";
 
-export const OPENCLAW_DIAGNOSTICS_TIMELINE_SCHEMA_VERSION = "openclaw.diagnostics.v1";
+const OPENCLAW_DIAGNOSTICS_TIMELINE_SCHEMA_VERSION = "openclaw.diagnostics.v1";
 
-export type DiagnosticsTimelineEventType =
+type DiagnosticsTimelineEventType =
   | "span.start"
   | "span.end"
   | "span.error"
@@ -17,9 +17,9 @@ export type DiagnosticsTimelineEventType =
   | "provider.request"
   | "childProcess.exit";
 
-export type DiagnosticsTimelineAttributes = Record<string, string | number | boolean | null>;
+type DiagnosticsTimelineAttributes = Record<string, string | number | boolean | null>;
 
-export type DiagnosticsTimelineEvent = {
+type DiagnosticsTimelineEvent = {
   type: DiagnosticsTimelineEventType;
   name: string;
   timestamp?: string;
diff --git a/src/infra/disk-space.ts b/src/infra/disk-space.ts
index 57391338b7f..9e0ba02c33c 100644
--- a/src/infra/disk-space.ts
+++ b/src/infra/disk-space.ts
@@ -1,9 +1,9 @@
 import fs from "node:fs";
 import path from "node:path";
 
-export const LOW_DISK_SPACE_WARNING_THRESHOLD_BYTES = 1024 * 1024 * 1024;
+const LOW_DISK_SPACE_WARNING_THRESHOLD_BYTES = 1024 * 1024 * 1024;
 
-export type DiskSpaceSnapshot = {
+type DiskSpaceSnapshot = {
   targetPath: string;
   checkedPath: string;
   availableBytes: number;