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/register/page.tsx

@@ -1,4 +1,3 @@
-'use client';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 import {
@@ -22,7 +21,7 @@ import {
 } from '@/components/ui/form';
 import { useEffect, useState } from 'react';
 import { httpClient } from '@/app/infra/http/HttpClient';
-import { useRouter } from 'next/navigation';
+import { useNavigate } from 'react-router-dom';
 import { Mail, Lock, Loader2, Info } from 'lucide-react';
 import {
   Popover,
@@ -42,7 +41,7 @@ const formSchema = (t: (key: string) => string) =>
   });
 
 export default function Register() {
-  const router = useRouter();
+  const navigate = useNavigate();
   const { t } = useTranslation();
   const [spaceLoading, setSpaceLoading] = useState(false);
 
@@ -63,7 +62,7 @@ export default function Register() {
       .checkIfInited()
       .then((res) => {
         if (res.initialized) {
-          router.push('/login');
+          navigate('/login');
         }
       })
       .catch(() => {});
@@ -78,7 +77,7 @@ export default function Register() {
       .initUser(username, password)
       .then(() => {
         toast.success(t('register.initSuccess'));
-        router.push('/login');
+        navigate('/login');
       })
       .catch((err: Error) => {
         toast.error(t('register.initFailed') + (err as CustomApiError).msg);
@@ -114,7 +113,7 @@ export default function Register() {
             <LanguageSelector />
           </div>
           <img
-            src={langbotIcon.src}
+            src={langbotIcon}
             alt="LangBot"
             className="w-16 h-16 mb-4 mx-auto"
           />