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/package.json

@@ -3,16 +3,15 @@
   "version": "0.1.0",
   "private": true,
   "scripts": {
-    "dev": "next dev --turbopack",
-    "build": "next build",
-    "start": "next start",
-    "lint": "eslint src",
-    "lint:fix": "eslint src --fix",
-    "lint-staged": "lint-staged"
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "preview": "vite preview",
+    "lint": "eslint .",
+    "format": "prettier --write ."
   },
   "lint-staged": {
     "*.{js,jsx,ts,tsx}": [
-      "next lint --fix",
+      "eslint --fix",
       "prettier --write"
     ]
   },
@@ -46,6 +45,7 @@
     "@radix-ui/react-tooltip": "^1.2.7",
     "@tailwindcss/postcss": "^4.1.5",
     "@tanstack/react-table": "^8.21.3",
+    "@vitejs/plugin-react": "^6.0.1",
     "axios": "^1.13.5",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
@@ -55,8 +55,6 @@
     "input-otp": "^1.4.2",
     "lodash": "^4.17.23",
     "lucide-react": "^0.507.0",
-    "next": "~16.1.5",
-    "next-themes": "^0.4.6",
     "postcss": "^8.5.3",
     "qrcode": "^1.5.4",
     "react": "19.2.1",
@@ -65,6 +63,7 @@
     "react-i18next": "^15.5.1",
     "react-markdown": "^10.1.0",
     "react-photo-view": "^1.2.7",
+    "react-router-dom": "^7.14.0",
     "react-syntax-highlighter": "^16.1.0",
     "recharts": "2.15.4",
     "rehype-autolink-headings": "^7.1.0",
@@ -77,10 +76,10 @@
     "tailwind-merge": "^3.2.0",
     "tailwindcss": "^4.1.5",
     "uuidjs": "^5.1.0",
+    "vite": "^8.0.3",
     "zod": "^3.24.4"
   },
   "devDependencies": {
-    "@eslint/eslintrc": "^3",
     "@types/debug": "^4.1.12",
     "@types/estree": "^1.0.8",
     "@types/estree-jsx": "^1.0.5",
@@ -95,9 +94,10 @@
     "@types/react-syntax-highlighter": "^15.5.13",
     "@types/unist": "^3.0.3",
     "eslint": "^9",
-    "eslint-config-next": "15.2.4",
     "eslint-config-prettier": "^10.1.2",
     "eslint-plugin-prettier": "^5.2.6",
+    "eslint-plugin-react": "^7.37.5",
+    "eslint-plugin-react-hooks": "^5.2.0",
     "lint-staged": "^15.5.1",
     "prettier": "^3.5.3",
     "tw-animate-css": "^1.2.9",