fix: drop no-op install script that triggers Yarn build warning

package.json

@@ -16,7 +16,6 @@
     "compile": "tsc -p .",
     "fix": "gts fix",
     "format": "clang-format --style file -i --glob='bindings/**/*.{h,hh,cpp,cc}'",
-    "install": "exit 0",
     "lint": "jsgl --local . && gts check && clang-format --style file -n -Werror --glob='bindings/**/*.{h,hh,cpp,cc}'",
     "prepare": "npm run compile && npm run rebuild",
     "pretest:js-asan": "npm run compile && npm run build:asan",

ts/test/test-no-build-scripts.ts

@@ -0,0 +1,14 @@
+import * as assert from 'assert';
+import * as fs from 'fs';
+import * as path from 'path';
+
+describe('package manifest', () => {
+  it('declares no npm build lifecycle scripts (Yarn Berry YN0007)', () => {
+    const manifest = path.join(__dirname, '..', '..', 'package.json');
+    const pkg = JSON.parse(fs.readFileSync(manifest, 'utf8'));
+    const scripts = pkg.scripts || {};
+    const hooks = ['preinstall', 'install', 'postinstall'];
+    const present = hooks.filter(name => scripts[name] !== undefined);
+    assert.deepStrictEqual(present, []);
+  });
+});