various fixes. added version#s and added a playable browser build of the solitaire game (including deploy to filebrowser script)

test/replay.test.ts

@@ -268,6 +268,30 @@ describe('replay HTML', () => {
     }
   });
 
+  it('renders a LATER frame, where the board state is carried forward', () => {
+    // The page omits cells/facilities/division when unchanged and resolves them by walking back —
+    // 63% of a 5.2 MB payload was the same grid re-serialised every frame. Rendering only frame 0
+    // would never exercise that path, because frame 0 always carries everything.
+    const js = html.slice(html.lastIndexOf('<script>') + 8, html.lastIndexOf('</script>'));
+    const els = new Map<string, Record<string, unknown>>();
+    const stub = {
+      getElementById: (id: string) => {
+        if (!els.has(id)) els.set(id, { textContent: '', innerHTML: '', value: '', style: {}, max: 0 });
+        return els.get(id);
+      },
+    };
+    // Append a jump to a late frame so render() runs against carried-forward state.
+    const run = new Function('document', 'setInterval', 'clearInterval', js + '\n;go(FRAMES.length - 1);');
+    assert.doesNotThrow(
+      () => run(stub, () => 0, () => undefined),
+      'the page threw rendering a frame whose board state was carried forward',
+    );
+    assert.ok(
+      String(els.get('grid')?.innerHTML ?? '').length > 0,
+      'the grid rendered empty on a carried-forward frame',
+    );
+  });
+
   it('stays a sane size', () => {
     const mb = Buffer.byteLength(html) / 1024 / 1024;
     assert.ok(mb < 5, `replay is ${mb.toFixed(1)} MB`);