Enforce stale core contracts in the worker without native startup I/O

frontend/app-bootstrap.js

@@ -27,12 +27,11 @@
     return {bytes,digest};
   }
   async function start() {
-    if(!manifest.appCache || !root.crypto?.subtle || (!root.Lazy.captureApp&&!root.navigator?.serviceWorker?.controller))return external(key);
+    if(!manifest.appCache || !root.crypto?.subtle || !root.Lazy.captureApp)return external(key);
     const expected=manifest.files['/app.js'].h;
     let cache;
     try { cache=await root.caches?.open('ytplayer-assets'); } catch {}
     let response=await cache?.match(key);
-    if(!root.Lazy.captureApp && response?.ok && response.headers.get('X-Asset-Hash')===expected)return external(key);
     if(!response || response.headers.get('X-Asset-Hash')!==expected) {
       try { response=await (root.Lazy.appResponse || root.fetch(key,{credentials:'same-origin'})); } catch {}
     }
@@ -57,7 +56,6 @@
     // CacheStorage may share a full quota with saved music. Never remove data
     // to make room; boot from these verified bytes even if caching is refused.
     try { await cache?.put(key,response); } catch(error) { root.console.warn('[app-cache]',error.message); }
-    if(!root.Lazy.captureApp)return external(key);
     const node=doc.createElement('script');node.textContent=new root.TextDecoder().decode(bytes);
     execute(node);
   }