Drop the ESM entry smoke test

It stubbed HTMLElement and customElements on globalThis, then imported
the bundle in Node. The module is a browser web component — importing
it in Node is outside its contract, and the stubs were the kind of
monkey patch this repo doesn't want. The typecheck, build:lib, dist
artifact check, and npm pack dry-run together already validate the
API surface and packaging.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: chapterjason

.github/workflows/ci.yml

@@ -32,18 +32,6 @@ jobs:
           test -f dist/virtual-keyboard.js
           test -f dist/virtual-keyboard.d.ts
 
-      - name: Smoke test ESM entry
-        run: |
-          node -e '
-          globalThis.HTMLElement = class {};
-          globalThis.customElements = { define() {} };
-          import("./dist/virtual-keyboard.js").then(m => {
-            const keys = Object.keys(m);
-            console.log("exports:", keys);
-            const missing = ["VirtualKeyboard","terminalAdapter","nativeAdapter"].filter(k => !keys.includes(k));
-            if (missing.length) { console.error("missing:", missing); process.exit(1); }
-          })'
-
       - name: Smoke test npm pack
         run: npm pack --dry-run