Set Node.js floor to 24 (#5)

Add engines.node >= 24, cover Node 24 in the CI matrix, and state the floor in README and AGENTS.md.

Author: TheGreatAxios

.github/workflows/ci.yml

@@ -0,0 +1,21 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [24]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+      - uses: oven-sh/setup-bun@v2
+      - run: bun install --frozen-lockfile
+      - run: bun run check

AGENTS.md

@@ -47,5 +47,7 @@ The package ships TypeScript source on npm as `@corbits/oauth-core`:
 `exports` points at `src/index.ts`, there is no build step and no `dist/`.
 Consumers install the published package (`bun add @corbits/oauth-core` or
 `npm install @corbits/oauth-core`) on Bun >= 1.2, which runs the source
-as-is. A release is a version bump followed by
-`npm publish --access public` with no other preparation.
+as-is. Node.js >= 24 is the engines floor for published-dist consumers;
+native Node does not load this extensionless TypeScript source. A release
+is a version bump followed by `npm publish --access public` with no other
+preparation.

README.md

@@ -17,8 +17,10 @@ bun add @corbits/oauth-core
 npm install @corbits/oauth-core
 ```
 
-The package ships TypeScript source and needs no build step. It requires
-Bun >= 1.2, which consumes the TypeScript source directly.
+The package ships TypeScript source and needs no build step. Bun >= 1.2
+consumes the TypeScript source directly. Node.js >= 24 is the engines
+floor for published-dist consumers — native Node does not load this
+extensionless TypeScript source as-is.
 
 ## Usage
 

package.json

@@ -46,7 +46,8 @@
     "typescript-eslint": "8.42.0"
   },
   "engines": {
-    "bun": ">=1.2.0"
+    "bun": ">=1.2.0",
+    "node": ">=24"
   },
   "repository": {
     "type": "git",