fix: remove unused imports and fix privacy popup text

- Remove unused SettingsIcon and UserMenu imports from epub and pdf pages
- Remove unused UserMenu import from home page
- Remove unused isDev const from home page
- Update SettingsModal to only import clearSignedOut
- Fix apostrophe encoding in privacy popup description

src/app/epub/[id]/page.tsx

@@ -7,7 +7,6 @@ import { useEPUB } from '@/contexts/EPUBContext';
 import { DocumentSkeleton } from '@/components/DocumentSkeleton';
 import { EPUBViewer } from '@/components/EPUBViewer';
 import { DocumentSettings } from '@/components/DocumentSettings';
-import { SettingsIcon } from '@/components/icons/Icons';
 import { Header } from '@/components/Header';
 import { useTTS } from "@/contexts/TTSContext";
 import TTSPlayer from '@/components/player/TTSPlayer';
@@ -19,7 +18,6 @@ import type { AudiobookGenerationSettings } from '@/types/client';
 import { resolveDocumentId } from '@/lib/dexie';
 import { RateLimitBanner } from '@/components/rate-limit-banner';
 import { useAutoRateLimit } from '@/contexts/AutoRateLimitContext';
-import { UserMenu } from '@/components/auth/UserMenu';
 
 const isDev = process.env.NEXT_PUBLIC_NODE_ENV !== 'production' || process.env.NODE_ENV == null;
 

src/app/page.tsx

@@ -5,8 +5,6 @@ import { UserMenu } from '@/components/auth/UserMenu';
 import { AuthLoader } from '@/components/auth/AuthLoader';
 import { RateLimitBanner } from '@/components/rate-limit-banner';
 
-const isDev = process.env.NEXT_PUBLIC_NODE_ENV !== 'production' || process.env.NODE_ENV == null;
-
 export default function Home() {
   return (
     <div className="flex flex-col h-full w-full">

src/app/pdf/[id]/page.tsx

@@ -18,7 +18,6 @@ import { RateLimitPauseButton } from '@/components/player/RateLimitPauseButton';
 import { resolveDocumentId } from '@/lib/dexie';
 import { RateLimitBanner } from '@/components/rate-limit-banner';
 import { useAutoRateLimit } from '@/contexts/AutoRateLimitContext';
-import { UserMenu } from '@/components/auth/UserMenu';
 
 const isDev = process.env.NEXT_PUBLIC_NODE_ENV !== 'production' || process.env.NODE_ENV == null;
 

src/components/SettingsModal.tsx

@@ -34,7 +34,7 @@ import { DocumentSelectionModal } from '@/components/DocumentSelectionModal';
 import { BaseDocument } from '@/types/documents';
 import { getAuthClient } from '@/lib/auth-client';
 import { useAuthSession } from '@/hooks/useAuth';
-import { markSignedOut, clearSignedOut } from '@/lib/session-utils';
+import { clearSignedOut } from '@/lib/session-utils';
 import { useAuthConfig, useAutoRateLimit } from '@/contexts/AutoRateLimitContext';
 import { useRouter } from 'next/navigation';
 import { showPrivacyPopup } from '@/components/privacy-popup';

src/components/privacy-popup.tsx

@@ -111,7 +111,7 @@ function PrivacyPopupBody({
           <li>Documents synced between your browser and this server</li>
           <li>Generated audiobooks</li>
           {authEnabled ? (
-            <li>Auth users data and IP rate limiting data are stored in the server's database</li>
+            <li>Auth users data and IP rate limiting data are stored in the server&apos;s database</li>
           ) : (
             <li>Authentication is disabled on this server, so no server-side user/session database is used</li>
           )}