feat: Refactor utility and component exports, update dependencies, and add Knip for unused code detection.

frontend/src/app/ApiContext.tsx

@@ -41,5 +41,3 @@ export const useApi = (): ApiContextValue => {
   }
   return ctx;
 };
-
-export const getHttpClient = (): HttpClient => httpClient;

frontend/src/app/PanelManagerContext.tsx

@@ -421,5 +421,3 @@ export const usePanelResizeBindings = (
     isPanelResizing: resizingPanel === panel,
   };
 };
-
-export default PanelManagerContext;

frontend/src/app/WorkspaceSelectionContext.tsx

@@ -1,5 +1,5 @@
 import React, { createContext, useContext } from 'react';
-import type useWorkspaceSelection from './useWorkspaceSelection';
+import type { useWorkspaceSelection } from './useWorkspaceSelection';
 
 export type WorkspaceSelectionValue = ReturnType<typeof useWorkspaceSelection>;
 
@@ -23,5 +23,3 @@ export const useWorkspaceSelectionContext = () => {
   }
   return context;
 };
-
-export default WorkspaceSelectionContext;

frontend/src/app/useDetailPanel.ts

@@ -1,6 +1,6 @@
 import { useCallback, useEffect, useRef, useState } from 'react';
 
-export interface DetailDocument {
+interface DetailDocument {
   id?: string;
   [key: string]: unknown;
 }
@@ -102,5 +102,3 @@ export const useDetailPanel = ({
     setDetailPanelOpen,
   };
 };
-
-export default useDetailPanel;

frontend/src/app/useDocumentSelection.ts

@@ -285,5 +285,3 @@ export const useDocumentSelection = ({
     configureSelectionEnvironment,
   };
 };
-
-export default useDocumentSelection;

frontend/src/app/useManagementModals.tsx

@@ -231,5 +231,3 @@ export const useManagementModals = ({
     activeModal,
   };
 };
-
-export default useManagementModals;

frontend/src/app/useWorkspaceSelection.ts

@@ -115,5 +115,3 @@ export const useWorkspaceSelection = ({
     inspectFolder,
   };
 };
-
-export default useWorkspaceSelection;

frontend/src/app/useWorkspaceSurface.tsx

@@ -7,17 +7,17 @@ import { usePanelManager } from './PanelManagerContext';
 import { FolderManagerProvider } from '../folders/FolderManagerContext';
 import type { Identifier } from '../types/identifiers';
 
-export type EnsureAssetUrl = (
+type EnsureAssetUrl = (
   docId: Identifier,
   asset: unknown,
   options?: Record<string, unknown>,
 ) => Promise<unknown> | void;
-export type EnsurePreviewData = (docId: Identifier, options?: Record<string, unknown>) => Promise<unknown>;
-export type GetDocumentAsset = (document: unknown, assetType: string) => unknown;
-export type NotifyApiError = (error: unknown, fallbackMessage?: string) => void;
+type EnsurePreviewData = (docId: Identifier, options?: Record<string, unknown>) => Promise<unknown>;
+type GetDocumentAsset = (document: unknown, assetType: string) => unknown;
+type NotifyApiError = (error: unknown, fallbackMessage?: string) => void;
 
-export type DocumentsTableProps = ComponentProps<typeof DocumentsPanel> | null;
-export type DetailPanelProps = (ComponentProps<typeof DocumentViewerPanel> & {
+type DocumentsTableProps = ComponentProps<typeof DocumentsPanel> | null;
+type DetailPanelProps = (ComponentProps<typeof DocumentViewerPanel> & {
   onClose?: () => void;
   onOpenPreview?: (args: { documentIds: Array<string> }) => void;
   folderNodes?: Map<Identifier | 'root', unknown>;
@@ -27,7 +27,7 @@ export type DetailPanelProps = (ComponentProps<typeof DocumentViewerPanel> & {
   ) => Promise<void>;
 }) | null;
 
-export type WorkspaceSurface = { content: ReactNode; detail?: ReactNode | null; detailMode?: 'overlay' | 'inline' | null } | null;
+type WorkspaceSurface = { content: ReactNode; detail?: ReactNode | null; detailMode?: 'overlay' | 'inline' | null } | null;
 
 export interface UseWorkspaceSurfaceArgs {
   sidebarHidden?: boolean;
@@ -44,7 +44,7 @@ export interface UseWorkspaceSurfaceArgs {
   closeDocumentPreview?: () => void;
 }
 
-export interface UseWorkspaceSurfaceResult {
+interface UseWorkspaceSurfaceResult {
   surface: WorkspaceSurface;
 }