refactor(web): migrate from Next.js to Vite + React Router (#2102)

* refactor(web): migrate from Next.js to Vite + React Router

* fix: update build pipelines for Vite migration (out → dist)

- Dockerfile: npm run build → npx vite build, web/out → web/dist
- pyproject.toml: package-data web/out/** → web/dist/**
- paths.py: support both web/dist (Vite) and web/out (legacy) with fallback

* fix: remove .next from git tracking, add to .gitignore

1334 cached files from web/.next/ were accidentally committed.
Added .next/ to both root and web/.gitignore.

* fix: update build process to use Vite and correct output directory

* fix: update pnpm-lock.yaml and eslint config for Vite migration

* style: fix prettier formatting issues

* fix: add eslint-plugin-react-hooks for Vite migration

* fix: remove undefined eslint rule reference, downgrade react-hooks plugin to v5

* fix(web): clean up remaining Next.js artifacts in Vite migration

- Add vite-env.d.ts for import.meta.env and asset type declarations
- Remove dead layout.tsx (providers already in main.tsx)
- Fix useSearchParams destructuring to [searchParams] tuple (11 locations)
- Replace process.env.NEXT_PUBLIC_* with import.meta.env.VITE_*
- Fix langbotIcon.src to langbotIcon (Vite returns URL string)
- Fix Link href to Link to for react-router-dom
- Fix navigate({ scroll: false }) to { preventScrollReset: true }
- Fix [router] dependency arrays to [navigate]
- Remove Next.js plugin from tsconfig, set rsc: false in components.json
- Replace next lint with eslint in lint-staged

* feat: add tools API endpoint and tools-selector form type

Backend:
- Add GET /api/v1/tools — list all available tools (plugin + MCP)
- Add GET /api/v1/tools/<tool_name> — get specific tool details

Frontend:
- Add TOOLS_SELECTOR form type for plugin config forms
- Multi-select dialog with tool name and description
- Add PluginTool entity type and API client methods

* Revert "feat: add tools API endpoint and tools-selector form type"

This reverts commit 3c637fc563.

web/src/app/home/layout.tsx

@@ -1,5 +1,3 @@
-'use client';
-
 import HomeSidebar from '@/app/home/components/home-sidebar/HomeSidebar';
 import SurveyWidget from '@/app/home/components/survey/SurveyWidget';
 import React, {
@@ -21,8 +19,8 @@ import {
   initializeUserInfo,
   initializeSystemInfo,
 } from '@/app/infra/http';
-import { usePathname, useRouter } from 'next/navigation';
-import Link from 'next/link';
+import { useNavigate, useLocation } from 'react-router-dom';
+import { Link } from 'react-router-dom';
 import { extractI18nObject } from '@/i18n/I18nProvider';
 import { CircleHelp } from 'lucide-react';
 import { useTranslation } from 'react-i18next';
@@ -59,7 +57,7 @@ export default function HomeLayout({
 }: Readonly<{
   children: React.ReactNode;
 }>) {
-  const router = useRouter();
+  const navigate = useNavigate();
 
   // Initialize user info if not already initialized
   useEffect(() => {
@@ -75,14 +73,14 @@ export default function HomeLayout({
         // Always re-fetch to ensure we have the latest wizard_status from backend
         await initializeSystemInfo();
         if (systemInfo.wizard_status === 'none') {
-          router.replace('/wizard');
+          navigate('/wizard');
         }
       } catch {
         // If fetching system info fails, don't redirect
       }
     };
     checkWizard();
-  }, [router]);
+  }, [navigate]);
 
   return (
     <SidebarDataProvider>
@@ -101,7 +99,8 @@ function HomeLayoutInner({ children }: { children: React.ReactNode }) {
     zh_Hans: '',
   });
   const { detailEntityName } = useSidebarData();
-  const pathname = usePathname();
+  const location = useLocation();
+  const pathname = location.pathname;
   const { t } = useTranslation();
 
   const onSelectedChangeAction = useCallback((child: SidebarChildVO) => {
@@ -139,7 +138,7 @@ function HomeLayoutInner({ children }: { children: React.ReactNode }) {
               <BreadcrumbList>
                 <BreadcrumbItem className="hidden md:block">
                   <BreadcrumbLink asChild>
-                    <Link href={sectionLink}>{sectionLabel}</Link>
+                    <Link to={sectionLink}>{sectionLabel}</Link>
                   </BreadcrumbLink>
                 </BreadcrumbItem>
                 <BreadcrumbSeparator className="hidden md:block" />