perf(bundle): replace plebbit-js imports with local utility, split chunks, fix CLS and rerenders

Eliminate direct @plebbit/plebbit-js (8.7MB) imports from all UI components by replacing
Plebbit.getShortAddress() with a local get-short-address utility. Add Vite manual chunks for
plebbit-js, plebbit-react-hooks, and react-spring/use-gesture. Fix catalog CLS by matching
skeleton to wrapper dimensions. Lazy-load ChallengeModal and ReplyModal. Add failed-URL cache
to useFetchGifFirstFrame, optimize useHide selector, and memoize useFeed options in mod-queue.

src/components/boardsbar/boardsbar.tsx

@@ -1,7 +1,7 @@
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { Link, useLocation, useNavigate, useParams } from 'react-router-dom';
 import { useTranslation } from 'react-i18next';
-import Plebbit from '@plebbit/plebbit-js';
+import getShortAddress from '../../lib/get-short-address';
 import { useAccountComment } from '@plebbit/plebbit-react-hooks';
 import useAccountsStore from '@plebbit/plebbit-react-hooks/dist/stores/accounts';
 import { isAllView, isCatalogView, isSubscriptionsView } from '../../lib/utils/view-utils';
@@ -200,7 +200,7 @@ const BoardsBarDesktop = () => {
   // Render a subscription link
   const renderSubscription = (address: string, index: number, total: number) => {
     const boardPath = getBoardPath(address, directories);
-    const displayText = address.endsWith('.eth') || address.endsWith('.sol') ? address : Plebbit.getShortAddress({ address });
+    const displayText = address.endsWith('.eth') || address.endsWith('.sol') ? address : getShortAddress(address);
 
     return (
       <span key={address}>