feat(web-tanstack): add TanStack Start app shell with tRPC client

apps/web-tanstack/package.json

@@ -4,17 +4,24 @@
   "version": "0.0.0",
   "type": "module",
   "scripts": {
-    "build": "echo 'placeholder'",
+    "build": "echo 'placeholder — TanStack Start build configured in later plan'",
     "dev": "echo 'placeholder'",
     "lint": "eslint .",
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {
+    "@repo/api": "workspace:*",
     "@repo/api-client": "workspace:*",
-    "@repo/ui": "workspace:*"
+    "@repo/ui": "workspace:*",
+    "@tanstack/react-router": "^1.120.0",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0"
   },
   "devDependencies": {
     "@repo/eslint-config": "workspace:*",
-    "@repo/typescript-config": "workspace:*"
+    "@repo/typescript-config": "workspace:*",
+    "@types/node": "^22.0.0",
+    "@types/react": "^19.0.0",
+    "@types/react-dom": "^19.0.0"
   }
 }

apps/web-tanstack/src/routes/__root.tsx

@@ -0,0 +1,10 @@
+import { Outlet, createRootRoute } from "@tanstack/react-router";
+import { ApiProvider } from "@repo/api-client";
+
+export const Route = createRootRoute({
+  component: () => (
+    <ApiProvider trpcUrl="http://localhost:3000/api/trpc">
+      <Outlet />
+    </ApiProvider>
+  ),
+});

apps/web-tanstack/src/routes/index.tsx

@@ -0,0 +1,14 @@
+import { createFileRoute } from "@tanstack/react-router";
+
+export const Route = createFileRoute("/")({
+  component: Home,
+});
+
+function Home() {
+  return (
+    <main>
+      <h1>Template — TanStack Start</h1>
+      <p>Clean Architecture Monorepo Template</p>
+    </main>
+  );
+}