fix(core-eslint): activate React rules-of-hooks for all TSX surfaces

next.js and react-internal.js are plain re-exports of base, so no
rules-of-hooks checking was active anywhere despite three React apps
and core-ui. Wire eslint-plugin-react-hooks in base.js scoped to
**/*.tsx (non-React packages untouched). Fixes the one violation it
surfaced: web-tanstack's root route called Route.useLoaderData inside
an anonymous component callback — extracted to a named RootComponent.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

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

@@ -1,6 +1,17 @@
 import { Outlet, createRootRoute } from "@tanstack/react-router";
 import { getNonce } from "@repo/core-shared/security/tanstack";
 
+function RootComponent() {
+  const { nonce } = Route.useLoaderData();
+  return (
+    <>
+      {/* nonce exposed to client so instrumentation-client.ts can read it */}
+      <meta name="csp-nonce" content={nonce} />
+      <Outlet />
+    </>
+  );
+}
+
 export const Route = createRootRoute({
   loader: async () => {
     try {
@@ -12,14 +23,5 @@ export const Route = createRootRoute({
       return { nonce: "" };
     }
   },
-  component: () => {
-    const { nonce } = Route.useLoaderData();
-    return (
-      <>
-        {/* nonce exposed to client so instrumentation-client.ts can read it */}
-        <meta name="csp-nonce" content={nonce} />
-        <Outlet />
-      </>
-    );
-  },
+  component: RootComponent,
 });

packages/core-eslint/base.js

@@ -3,6 +3,7 @@ import eslintConfigPrettier from "eslint-config-prettier";
 import tseslint from "typescript-eslint";
 import turboPlugin from "eslint-plugin-turbo";
 import boundaries from "eslint-plugin-boundaries";
+import reactHooks from "eslint-plugin-react-hooks";
 import globals from "globals";
 import conformancePlugin from "./plugin.js";
 import path from "node:path";
@@ -195,6 +196,13 @@ export default [
       "no-restricted-imports": "off",
     },
   },
+  // React rules-of-hooks for every TSX surface (apps, core-ui, feature
+  // ui/**). Scoped to .tsx so non-React packages are untouched.
+  {
+    files: ["**/*.tsx"],
+    plugins: { "react-hooks": reactHooks },
+    rules: reactHooks.configs.recommended.rules,
+  },
   // E1 — Event handlers must not be re-exported. Wire them only inside the
   // consumer feature's bind-production / bind-dev-seed (spec § 2.2 Rule E1).
   // J  — Direct `payload.jobs.*` access is forbidden outside the integration

packages/core-eslint/package.json

@@ -19,6 +19,7 @@
     "eslint": "^9.20.0",
     "eslint-config-prettier": "^10.1.0",
     "eslint-plugin-boundaries": "^4.2.2",
+    "eslint-plugin-react-hooks": "^5.2.0",
     "eslint-plugin-turbo": "^2.4.0",
     "typescript-eslint": "^8.25.0",
     "vitest": "^3.1.0"

pnpm-lock.yaml

@@ -733,6 +733,9 @@ importers:
       eslint-plugin-boundaries:
         specifier: ^4.2.2
         version: 4.2.2(@typescript-eslint/parser@8.58.0(eslint@9.39.4(jiti@2.7.0))(typescript@5.9.3))(eslint@9.39.4(jiti@2.7.0))
+      eslint-plugin-react-hooks:
+        specifier: ^5.2.0
+        version: 5.2.0(eslint@9.39.4(jiti@2.7.0))
       eslint-plugin-turbo:
         specifier: ^2.4.0
         version: 2.9.4(eslint@9.39.4(jiti@2.7.0))(turbo@2.9.4)
@@ -10680,6 +10683,15 @@ packages:
     peerDependencies:
       eslint: ">=6.0.0"
 
+  eslint-plugin-react-hooks@5.2.0:
+    resolution:
+      {
+        integrity: sha512-+f15FfK64YQwZdJNELETdn5ibXEUQmW1DZL6KXhNnc2heoy/sg9VJJeT7n8TlMWouzWqSWavFkIhHyIbIAEapg==,
+      }
+    engines: { node: ">=10" }
+    peerDependencies:
+      eslint: ^3.0.0 || ^4.0.0 || ^5.0.0 || ^6.0.0 || ^7.0.0 || ^8.0.0-0 || ^9.0.0
+
   eslint-plugin-turbo@2.9.4:
     resolution:
       {
@@ -24134,6 +24146,10 @@ snapshots:
       - eslint-import-resolver-webpack
       - supports-color
 
+  eslint-plugin-react-hooks@5.2.0(eslint@9.39.4(jiti@2.7.0)):
+    dependencies:
+      eslint: 9.39.4(jiti@2.7.0)
+
   eslint-plugin-turbo@2.9.4(eslint@9.39.4(jiti@2.7.0))(turbo@2.9.4):
     dependencies:
       dotenv: 16.0.3