refactor: remove remaining dead code

webui/src/channel-plugins/i18n.ts

@@ -1,6 +1,6 @@
 import type { TFunction } from "i18next";
 
-export type ChannelFieldMessages = {
+type ChannelFieldMessages = {
   label: string;
   placeholder?: string;
   help?: string;

webui/src/components/CliAppMentionText.tsx

@@ -137,7 +137,7 @@ export function CapabilityMentionToken({
   return <SessionMentionToken mention={segment.mention} label={segment.text} variant={variant} />;
 }
 
-export function SessionMentionToken({
+function SessionMentionToken({
   mention,
   label,
   variant,
@@ -172,7 +172,7 @@ export function SessionMentionToken({
   );
 }
 
-export function CliAppMentionToken({
+function CliAppMentionToken({
   app,
   label,
   variant,
@@ -229,7 +229,7 @@ export function CliAppMentionToken({
   );
 }
 
-export function McpPresetMentionToken({
+function McpPresetMentionToken({
   preset,
   label,
   variant,

webui/src/components/FileReferenceChip.tsx

@@ -151,7 +151,7 @@ export function splitFilePath(path: string): { directory: string; name: string }
   };
 }
 
-export function fileKindForPath(path: string): FileReferenceKind {
+function fileKindForPath(path: string): FileReferenceKind {
   const normalized = path.toLowerCase();
   const name = normalized.split(/[\\/]/).pop() ?? normalized;
   const ext = name.includes(".") ? name.split(".").pop() ?? "" : "";
@@ -193,7 +193,7 @@ export function fileKindForPath(path: string): FileReferenceKind {
   }
 }
 
-export function FileReferenceIcon({ kind }: { kind: FileReferenceKind }) {
+function FileReferenceIcon({ kind }: { kind: FileReferenceKind }) {
   if (kind === "python") {
     return (
       <svg

webui/src/components/MessageBubble.tsx

@@ -967,7 +967,7 @@ interface ReasoningBubbleProps {
   hasBodyBelow: boolean;
 }
 
-export function ReasoningBubble({
+function ReasoningBubble({
   text,
   streaming,
   hasBodyBelow,
@@ -993,7 +993,7 @@ interface TraceGroupProps {
  * collapsed because tool traces are supporting evidence, not the answer.
  * A single click expands the exact calls when the user wants details.
  */
-export function TraceGroup({ message }: TraceGroupProps) {
+function TraceGroup({ message }: TraceGroupProps) {
   const { t } = useTranslation();
   const lines = message.traces ?? [message.content];
   const count = lines.length;

webui/src/components/settings/channels/ChannelIdentity.tsx

@@ -174,7 +174,7 @@ export function ChannelLogo({
   );
 }
 
-export function channelDisplayName(feature: NanobotFeatureInfo): string {
+function channelDisplayName(feature: NanobotFeatureInfo): string {
   return channelUiPresentation(feature.name, feature.webui)?.displayName ?? feature.display_name;
 }
 

webui/src/components/settings/channels/ChannelSetupParts.tsx

@@ -112,7 +112,7 @@ export function ChannelSetupLinks({
   );
 }
 
-export function ChannelOfficialLink({
+function ChannelOfficialLink({
   feature,
   setup,
 }: {

webui/src/components/settings/channels/CredentialForm.tsx

@@ -6,7 +6,7 @@ import { Input } from "@/components/ui/input";
 import type { ChannelConfigField } from "@/components/settings/channels/catalog";
 import { cn } from "@/lib/utils";
 
-export function channelFieldValue(field: ChannelConfigField, values: Record<string, string>): string {
+function channelFieldValue(field: ChannelConfigField, values: Record<string, string>): string {
   return values[field.key] ?? field.defaultValue ?? field.options?.[0]?.value ?? "";
 }
 

webui/src/components/settings/channels/catalog.ts

@@ -27,7 +27,7 @@ export type ChannelSetupPresentation = {
   presets?: ChannelProviderPreset[];
 };
 
-export type ChannelCatalogSetupPresentation = {
+type ChannelCatalogSetupPresentation = {
   mode?: "webui" | "credentials" | "connect";
   command?: string;
   docsUrl?: string;
@@ -38,15 +38,15 @@ export type ChannelCatalogSetupPresentation = {
   presets?: ChannelProviderPresetDefinition[];
 };
 
-export type ChannelFieldPresentation = {
+type ChannelFieldPresentation = {
   key: string;
 };
 
-export type ChannelSetupActionDefinition = Omit<ChannelSetupAction, "label">;
+type ChannelSetupActionDefinition = Omit<ChannelSetupAction, "label">;
 
 export type ChannelProviderPresetDefinition = Omit<ChannelProviderPreset, "label">;
 
-export type ChannelSetupAction = {
+type ChannelSetupAction = {
   id: string;
   label: string;
   url?: string;
@@ -72,7 +72,7 @@ export type ChannelConfigField = {
   options?: ChannelConfigOption[];
 };
 
-export type ChannelConfigOption = {
+type ChannelConfigOption = {
   value: string;
   label: string;
 };

webui/src/components/settings/contracts.ts

@@ -14,7 +14,7 @@ export type SettingsSectionKey =
   | "runtime"
   | "advanced";
 
-export type PendingRestartSection = "runtime" | "browser" | "image";
+type PendingRestartSection = "runtime" | "browser" | "image";
 export type PendingRestartSections = Record<PendingRestartSection, boolean>;
 
 export type RestartAwarePayload = {

webui/src/components/thread/AgentActivityCluster.tsx

@@ -51,7 +51,7 @@ import type { CliAppInfo, McpPresetInfo, ToolProgressEvent, UIFileEdit, UIMessag
 
 const ACTIVITY_SCROLL_NEAR_BOTTOM_PX = 24;
 
-export { isAgentActivityMember, isReasoningOnlyAssistant };
+export { isAgentActivityMember };
 
 interface ActivityCounts {
   reasoningSteps: number;

webui/src/components/thread/activity/FileEditRow.tsx

@@ -155,7 +155,7 @@ function FileEditRow({
   );
 }
 
-export function hasVisibleDiffStats(edit: Pick<FileEditSummary, "added" | "deleted">): boolean {
+function hasVisibleDiffStats(edit: Pick<FileEditSummary, "added" | "deleted">): boolean {
   return edit.added > 0 || edit.deleted > 0;
 }
 

webui/src/components/thread/activity/generic-tool-model.ts

@@ -3,7 +3,7 @@ import { compactActivityPath, redactActivityText } from "./activity-text";
 export type GenericToolStatus = "running" | "done" | "error";
 export type ToolFamily = "content-search" | "file-search" | "list" | "read" | "memory" | "generic";
 
-export interface ToolField {
+interface ToolField {
   key:
     | "query"
     | "pattern"

webui/src/components/thread/activity/web-search-model.ts

@@ -7,7 +7,7 @@ import { displayWebHost, formatCompactWebUrl, parseSafeActivityHttpUrl } from ".
 export type WebSearchStatus = "running" | "done" | "error";
 export type WebSearchTarget = "web" | "x";
 
-export interface WebSearchSource {
+interface WebSearchSource {
   title: string;
   href: string;
   host: string;

webui/src/components/thread/promptNavigation.ts

@@ -26,13 +26,13 @@ export function userPromptAnchors(messages: UIMessage[]): PromptAnchor[] {
   });
 }
 
-export function promptLabel(content: string, index: number): string {
+function promptLabel(content: string, index: number): string {
   const text = content.replace(/\s+/g, " ").trim();
   if (!text) return `Prompt ${index + 1}`;
   return truncatePreview(text, 80);
 }
 
-export function promptPreview(content: string, index: number): string {
+function promptPreview(content: string, index: number): string {
   const text = compactPreview(content);
   if (!text) return `Prompt ${index + 1}`;
   return truncatePreview(text, 320);

webui/src/components/ui/button.tsx

@@ -33,7 +33,7 @@ const buttonVariants = cva(
   },
 );
 
-export interface ButtonProps
+interface ButtonProps
   extends React.ButtonHTMLAttributes<HTMLButtonElement>,
     VariantProps<typeof buttonVariants> {
   asChild?: boolean;

webui/src/components/ui/input.tsx

@@ -3,7 +3,7 @@ import * as React from "react";
 import { formControlFocusClassName } from "@/components/ui/form-control";
 import { cn } from "@/lib/utils";
 
-export type InputProps = React.InputHTMLAttributes<HTMLInputElement>;
+type InputProps = React.InputHTMLAttributes<HTMLInputElement>;
 
 const Input = React.forwardRef<HTMLInputElement, InputProps>(
   ({ className, type, ...props }, ref) => {

webui/src/components/ui/textarea.tsx

@@ -3,7 +3,7 @@ import * as React from "react";
 import { formControlFocusClassName } from "@/components/ui/form-control";
 import { cn } from "@/lib/utils";
 
-export type TextareaProps = React.TextareaHTMLAttributes<HTMLTextAreaElement>;
+type TextareaProps = React.TextareaHTMLAttributes<HTMLTextAreaElement>;
 
 const Textarea = React.forwardRef<HTMLTextAreaElement, TextareaProps>(
   ({ className, ...props }, ref) => {

webui/src/components/workbench/workbench-model.ts

@@ -12,7 +12,7 @@ export type {
 
 export const MAX_WORKBENCH_PANES = 4;
 
-export const WORKBENCH_LAYOUTS = [
+const WORKBENCH_LAYOUTS = [
   "columns",
   "rows",
   "grid",

webui/src/hooks/useAttachedImages.ts

@@ -9,10 +9,10 @@ import type { WebUIIngressLimits } from "@/lib/types";
  * - ``ready``     — ``dataUrl`` available; safe to submit
  * - ``error``     — validation / decode failure; chip shows inline error
  */
-export type AttachmentStatus = "encoding" | "ready" | "error";
+type AttachmentStatus = "encoding" | "ready" | "error";
 export type AttachmentKind = "image" | "file";
 
-export interface AttachedAttachment {
+interface AttachedAttachment {
   id: string;
   kind: AttachmentKind;
   file: File;
@@ -32,7 +32,7 @@ export interface AttachedAttachment {
 
 export type AttachedImage = AttachedAttachment;
 
-export interface RestoredReadyAttachment {
+interface RestoredReadyAttachment {
   dataUrl: string;
   name?: string;
   kind?: AttachmentKind;
@@ -55,8 +55,8 @@ export type AttachmentError =
   | "io";                // file read failed at the browser layer
 
 export const MAX_ATTACHMENTS_PER_MESSAGE = 4;
-export const MAX_ATTACHMENT_BYTES = 6 * 1024 * 1024;
-export const MAX_TOTAL_ATTACHMENT_BYTES = 24 * 1024 * 1024;
+const MAX_ATTACHMENT_BYTES = 6 * 1024 * 1024;
+const MAX_TOTAL_ATTACHMENT_BYTES = 24 * 1024 * 1024;
 
 /** MIME whitelist — mirrors the server's and the ``<input accept>`` attr. */
 const ACCEPTED_IMAGE_MIMES: ReadonlySet<string> = new Set([

webui/src/hooks/useClipboardAndDrop.ts

@@ -11,7 +11,7 @@ import { acceptedAttachmentKind } from "@/hooks/useAttachedImages";
  *   - Plain text pasted alongside attachments is *not* consumed by this helper,
  *     so the caller can still let the textarea receive it naturally.
  */
-export function extractImageFilesFromPaste(
+function extractImageFilesFromPaste(
   event: ClipboardEvent | React.ClipboardEvent,
 ): File[] {
   const clipboard = (event as ClipboardEvent).clipboardData
@@ -27,7 +27,7 @@ export function extractImageFilesFromPaste(
 }
 
 /** Extract dropped attachment files, mirroring ``extractImageFilesFromPaste``. */
-export function extractImageFilesFromDrop(
+function extractImageFilesFromDrop(
   event: DragEvent | React.DragEvent,
 ): File[] {
   const dt = (event as DragEvent).dataTransfer

webui/src/hooks/useSidebarState.ts

@@ -5,7 +5,7 @@ import { normalizeWorkbenchState } from "@/components/workbench/workbench-model"
 import { fetchSidebarState } from "@/lib/api";
 import type { ChatSummary, SidebarStatePayload } from "@/lib/types";
 
-export const DEFAULT_SIDEBAR_STATE: SidebarStatePayload = {
+const DEFAULT_SIDEBAR_STATE: SidebarStatePayload = {
   schema_version: 1,
   pinned_keys: [],
   archived_keys: [],
@@ -74,7 +74,7 @@ function boolMap(value: unknown): Record<string, boolean> {
   return out;
 }
 
-export function normalizeSidebarState(raw: unknown): SidebarStatePayload {
+function normalizeSidebarState(raw: unknown): SidebarStatePayload {
   if (!raw || typeof raw !== "object" || Array.isArray(raw)) {
     return { ...DEFAULT_SIDEBAR_STATE, view: { ...DEFAULT_SIDEBAR_STATE.view } };
   }

webui/src/i18n/config.ts

@@ -51,7 +51,7 @@ export function normalizeLocale(
   return baseMatch?.code ?? defaultLocale;
 }
 
-export function readStoredLocale(): SupportedLocale | null {
+function readStoredLocale(): SupportedLocale | null {
   if (typeof window === "undefined") return null;
   try {
     const raw = window.localStorage.getItem(LOCALE_STORAGE_KEY);

webui/src/i18n/index.ts

@@ -10,7 +10,6 @@ import {
   applyDocumentLocale,
   defaultLocale,
   fallbackLocale,
-  LOCALE_STORAGE_KEY,
   normalizeLocale,
   persistLocale,
   resolveInitialLocale,
@@ -47,7 +46,7 @@ export function currentLocale(): SupportedLocale {
   return normalizeLocale(i18n.resolvedLanguage ?? i18n.language ?? defaultLocale);
 }
 
-export async function loadLocaleResources(
+async function loadLocaleResources(
   locale: SupportedLocale,
 ): Promise<LocaleResource> {
   const existing = resourcePromises.get(locale);
@@ -131,5 +130,4 @@ function syncLocaleSideEffects(language: string) {
   persistLocale(locale);
 }
 
-export { LOCALE_STORAGE_KEY };
 export default i18n;

webui/src/lib/ansi.ts

@@ -3,7 +3,7 @@ export type AnsiSegment = {
   style?: AnsiStyle;
 };
 
-export type AnsiStyle = {
+type AnsiStyle = {
   backgroundColor?: string;
   color?: string;
   fontStyle?: "italic";

webui/src/lib/http.ts

@@ -1,4 +1,4 @@
-export const DEFAULT_HTTP_TIMEOUT_MS = 20_000;
+const DEFAULT_HTTP_TIMEOUT_MS = 20_000;
 
 export async function fetchWithTimeout(
   input: RequestInfo | URL,

webui/src/lib/imageEncode.ts

@@ -11,7 +11,7 @@ import {
   type EncodeResponse,
 } from "@/workers/imageEncode.worker";
 
-export type { EncodeResponse, EncodeSuccess, EncodeFailure } from "@/workers/imageEncode.worker";
+export type { EncodeResponse, EncodeFailure } from "@/workers/imageEncode.worker";
 
 type Pending = {
   resolve: (r: EncodeResponse) => void;

webui/src/lib/nanobot-client.ts

@@ -113,7 +113,7 @@ interface PendingWebUIRequest extends PendingRequest<unknown> {
   serializedFrame: string;
 }
 
-export class WebUIMutationError extends Error {
+class WebUIMutationError extends Error {
   status: number;
 
   constructor(status: number, message: string) {

webui/src/lib/provider-brand.ts

@@ -124,7 +124,7 @@ export function logoFallbackUrls(logoUrl: string | null | undefined): string[] {
   return urls;
 }
 
-export const PROVIDER_BRAND_ALIASES: Record<string, string> = {
+const PROVIDER_BRAND_ALIASES: Record<string, string> = {
   brave_search: "brave",
   byteplus_coding_plan: "byteplus",
   mimo: "xiaomi_mimo",
@@ -137,7 +137,7 @@ export const PROVIDER_BRAND_ALIASES: Record<string, string> = {
   volcengine_coding_plan: "volcengine",
 };
 
-export const PROVIDER_LABEL_ALIASES: Record<string, string> = {
+const PROVIDER_LABEL_ALIASES: Record<string, string> = {
   brave_search: "Brave Search",
   byteplus_coding_plan: "BytePlus",
   minimaxAnthropic: "MiniMax",

webui/src/lib/runtime.ts

@@ -10,7 +10,7 @@ export interface RuntimeHost {
   exportDiagnostics?: () => Promise<string>;
 }
 
-export interface HostRuntimeInfo {
+interface HostRuntimeInfo {
   surface: "native";
   app_version: string;
   engine_status: "starting" | "ready" | "restarting" | "stopped" | "crashed";
@@ -23,7 +23,7 @@ export interface HostRuntimeInfo {
   engine_transport?: "unix_socket";
 }
 
-export interface NanobotHostApi {
+interface NanobotHostApi {
   getRuntimeInfo?(): Promise<HostRuntimeInfo>;
   restartEngine?(): Promise<void>;
   pickFolder?(): Promise<string | null>;
@@ -40,7 +40,7 @@ export interface NanobotHostApi {
   ): () => void;
 }
 
-export type HostSocketEvent =
+type HostSocketEvent =
   | { id: string; type: "open" }
   | { data: string; id: string; type: "message" }
   | { id: string; message: string; type: "error" }

webui/src/lib/types.ts

@@ -1,8 +1,8 @@
-export type Role = "user" | "assistant" | "tool" | "system";
+type Role = "user" | "assistant" | "tool" | "system";
 
 /** "trace" rows are intermediate agent breadcrumbs (tool-call hints,
  * progress pings) that should not be rendered as conversational replies. */
-export type MessageKind = "message" | "trace";
+type MessageKind = "message" | "trace";
 
 export type UITurnPhase = "user" | "reasoning" | "activity" | "answer" | "complete";
 export type MessageDeliveryStatus = "sending" | "accepted" | "failed";
@@ -37,7 +37,7 @@ export interface UIMediaAttachment {
   name?: string;
 }
 
-export interface UIMessageSource { kind: "cron" | "local_trigger" | "trigger" | string; label?: string; }
+interface UIMessageSource { kind: "cron" | "local_trigger" | "trigger" | string; label?: string; }
 
 export interface TurnUsage {
   prompt_tokens?: number;
@@ -144,7 +144,7 @@ export interface SessionHandle {
   name: string;
 }
 
-export interface UISessionMessage {
+interface UISessionMessage {
   message_id: string;
   session: SessionHandle;
 }
@@ -226,14 +226,14 @@ export interface SkillSummary {
   unavailable_reason?: string;
 }
 
-export interface SkillRequirements {
+interface SkillRequirements {
   bins: string[];
   env: string[];
   missing_bins: string[];
   missing_env: string[];
 }
 
-export interface SkillInstallOption {
+interface SkillInstallOption {
   id: string;
   kind: string;
   label: string;
@@ -303,7 +303,7 @@ export interface SkillInstallPayload extends SkillsPayload {
 }
 
 /** Structured UI blob on ``progress`` WS frames; channels may add more ``kind`` values later. */
-export interface AgentUIBlob {
+interface AgentUIBlob {
   kind: string;
   data?: unknown;
 }
@@ -455,16 +455,16 @@ export interface BootstrapResponse {
   runtime_capabilities?: RuntimeCapabilities;
 }
 
-export interface WebUITransportLimits {
+interface WebUITransportLimits {
   max_frame_bytes: number;
   envelope_reserve_bytes: number;
 }
 
-export interface WebUIMessageLimits {
+interface WebUIMessageLimits {
   max_text_bytes: number;
 }
 
-export interface WebUIAttachmentLimits {
+interface WebUIAttachmentLimits {
   max_count: number;
   max_file_bytes: number;
   max_total_bytes: number;
@@ -477,8 +477,8 @@ export interface WebUIIngressLimits {
 }
 
 export type RuntimeSurface = "browser" | "native";
-export type RestartBehavior = "none" | "nextTurn" | "engineRestart" | "appRestart";
-export type SettingsApplyStatus =
+type RestartBehavior = "none" | "nextTurn" | "engineRestart" | "appRestart";
+type SettingsApplyStatus =
   | "idle"
   | "pending"
   | "applying"
@@ -492,7 +492,7 @@ export interface RuntimeCapabilities {
   can_export_diagnostics: boolean;
 }
 
-export interface ProviderModelInfo {
+interface ProviderModelInfo {
   id: string;
   label?: string | null;
   description?: string | null;
@@ -783,12 +783,12 @@ export interface ApiServicePayload {
   last_action?: "started" | "stopped" | string;
 }
 
-export interface AppPackageRef {
+interface AppPackageRef {
   manager: string;
   name?: string;
 }
 
-export interface AppCapability {
+interface AppCapability {
   type: "cli" | "mcp" | "skill" | string;
   entry_point?: string;
   package?: AppPackageRef;
@@ -806,20 +806,20 @@ export interface AppCapability {
   }>;
 }
 
-export interface AppPlan {
+interface AppPlan {
   supported: boolean;
   strategy?: string;
   managed_paths?: string[];
   verification?: string[];
 }
 
-export interface AppTrust {
+interface AppTrust {
   registry: string;
   level: string;
   review_status: string;
 }
 
-export interface AppManifest {
+interface AppManifest {
   schema: "agent-app.v1" | string;
   id: string;
   display_name: string;
@@ -935,7 +935,7 @@ export interface NanobotFeaturesPayload {
   };
 }
 
-export type ChannelSetupStatus =
+type ChannelSetupStatus =
   | "connected"
   | "configured"
   | "needs_setup"
@@ -943,9 +943,9 @@ export type ChannelSetupStatus =
   | "unsupported"
   | string;
 
-export type ChannelValidationCheckStatus = "pass" | "warn" | "fail" | "skipped" | string;
+type ChannelValidationCheckStatus = "pass" | "warn" | "fail" | "skipped" | string;
 
-export interface ChannelValidationCheck {
+interface ChannelValidationCheck {
   id: string;
   label: string;
   status: ChannelValidationCheckStatus;
@@ -953,7 +953,7 @@ export interface ChannelValidationCheck {
   action_url?: string;
 }
 
-export interface ChannelIdentity {
+interface ChannelIdentity {
   name?: string;
   workspace?: string;
   account?: string;
@@ -993,7 +993,7 @@ export interface PairingPayload {
   };
 }
 
-export interface McpPresetField {
+interface McpPresetField {
   name: string;
   label: string;
   secret: boolean;
@@ -1033,7 +1033,7 @@ export interface McpPresetInfo {
   manifest?: AppManifest;
 }
 
-export type McpOAuthFlowStatus =
+type McpOAuthFlowStatus =
   | "starting"
   | "authorization_required"
   | "connecting"
@@ -1089,7 +1089,7 @@ export interface McpPresetsPayload {
   };
 }
 
-export type ChannelConnectStatus = "pending" | "succeeded" | "expired" | "cancelled" | "failed";
+type ChannelConnectStatus = "pending" | "succeeded" | "expired" | "cancelled" | "failed";
 
 export interface ChannelConnectPayload {
   session_id: string;
@@ -1234,7 +1234,7 @@ export type ConnectionStatus =
   | "closed"
   | "error";
 
-export interface InboundTurnMetadata {
+interface InboundTurnMetadata {
   turn_id?: string;
   turn_phase?: UITurnPhase;
   turn_seq?: number;
@@ -1430,7 +1430,7 @@ export interface OutboundMcpPresetMention {
 }
 
 /** Response shape for ``GET .../webui-thread`` (server-built transcript replay). */
-export interface WebuiThreadPagePayload {
+interface WebuiThreadPagePayload {
   before_cursor?: string | null;
   has_more_before?: boolean;
   loaded_message_count?: number;

webui/src/workers/imageEncode.worker.ts

@@ -23,7 +23,7 @@ export type EncodeInput = {
   file: File;
 };
 
-export type EncodeSuccess = {
+type EncodeSuccess = {
   id: string;
   ok: true;
   dataUrl: string;