Add HF model auto-download with configurable AI env, and share link visibility toggles

public/share.html

@@ -66,6 +66,15 @@ body{font-family:'Segoe UI',system-ui,-apple-system,Roboto,sans-serif;background
   .share-link-block{margin-bottom:32px}
   .share-link-btn{display:inline-flex;align-items:center;gap:8px;background:var(--dark);color:#fff;text-decoration:none;border-radius:999px;padding:13px 24px;font-size:.92rem;font-weight:700;transition:opacity .15s,transform .15s}
   .share-link-btn:hover{opacity:.9;transform:translateY(-2px)}
+  .countdown{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(150%);z-index:50;display:flex;align-items:center;gap:10px;padding:14px 24px;font-size:.92rem;color:var(--dark);background:#fff;border-radius:16px;box-shadow:0 8px 30px rgba(20,30,40,.16);max-width:calc(100vw - 32px);opacity:0;transition:transform .3s ease,opacity .3s ease;pointer-events:none}
+  .countdown.visible{transform:translateX(-50%) translateY(0);opacity:1;pointer-events:auto}
+  .countdown .cd-icon{font-size:1.2rem}
+  .countdown .cd-text{color:#4a4f5a;line-height:1.4;text-align:center}
+  .countdown .cd-text strong{color:var(--dark);font-weight:700}
+  .countdown.warn{background:#FFF3E0}
+  .countdown.warn .cd-text strong{color:#E65100}
+  .countdown.urgent{background:#FFEBEE}
+  .countdown.urgent .cd-text strong{color:#C62828}
 </style>
 </head>
 <body>
@@ -83,6 +92,7 @@ body{font-family:'Segoe UI',system-ui,-apple-system,Roboto,sans-serif;background
   <div class="grid" id="grid"><div class="loading">Карточки загружаются...</div></div>
 </main>
 <div class="lightbox" id="lightbox"><img id="lightboxImg" alt=""></div>
+<div id="countdown" class="countdown"><span class="cd-icon">⏳</span><span class="cd-text"></span></div>
 
 <div class="password-modal" id="passwordModal">
   <div class="password-box">