desvincula o app do Lovable e corrige preset de build para Node

Remove .lovable/, AGENTS.md (banner de sync), bun.lock/bunfig.toml
(não usados, o build é via npm), lovable-error-reporting.ts, a
dependência @lovable.dev/vite-tanstack-config e o branding Lovable nas
metatags. vite.config.ts passa a configurar os plugins do TanStack
Start/Tailwind/nitro diretamente, sem o wrapper deles.

Nisso, corrige um bug crítico: o preset do nitro estava em
cloudflare-module (gera um Cloudflare Worker), mas o Dockerfile roda
o build direto com `node`. O container subiria sem escutar em porta
nenhuma e o /healthz falharia sempre. Preset trocado para node-server.

vite.config.ts

@@ -1,15 +1,40 @@
-// @lovable.dev/vite-tanstack-config already includes the following — do NOT add them manually
-// or the app will break with duplicate plugins:
-//   - TanStack devtools (dev-only, first), tanstackStart, viteReact, tailwindcss, tsConfigPaths,
-//     nitro (build-only using cloudflare as a default target), VITE_* env injection, @ path alias,
-//     React/TanStack dedupe, error logger plugins, and sandbox detection (port/host/strictPort).
-// You can pass additional config via defineConfig({ vite: { ... }, etc... }) if needed.
-import { defineConfig } from "@lovable.dev/vite-tanstack-config";
+import { fileURLToPath } from "node:url";
+import { defineConfig } from "vite";
+import tailwindcss from "@tailwindcss/vite";
+import tsConfigPaths from "vite-tsconfig-paths";
+import react from "@vitejs/plugin-react";
+import { tanstackStart } from "@tanstack/react-start/plugin/vite";
+import { nitro } from "nitro/vite";
 
-export default defineConfig({
-  tanstackStart: {
-    // Redirect TanStack Start's bundled server entry to src/server.ts (our SSR error wrapper).
-    // nitro/vite builds from this
-    server: { entry: "server" },
+export default defineConfig(({ command }) => ({
+  css: { transformer: "lightningcss" },
+  resolve: {
+    alias: { "@": fileURLToPath(new URL("./src", import.meta.url)) },
+    dedupe: [
+      "react",
+      "react-dom",
+      "react/jsx-runtime",
+      "react/jsx-dev-runtime",
+      "@tanstack/react-query",
+      "@tanstack/query-core",
+    ],
   },
-});
+  optimizeDeps: {
+    include: ["react", "react-dom", "react-dom/client", "react/jsx-runtime", "react/jsx-dev-runtime"],
+  },
+  server: {
+    host: "::",
+    port: 8080,
+  },
+  plugins: [
+    tailwindcss(),
+    tsConfigPaths({ projects: ["./tsconfig.json"] }),
+    tanstackStart({
+      server: { entry: "server" },
+    }),
+    // Node HTTP server output, not a Cloudflare Worker: the Dockerfile runs
+    // this with plain `node`, so the build must target node-server.
+    ...(command === "build" ? [nitro({ preset: "node-server" })] : []),
+    react(),
+  ],
+}));