feat(branding): logo and system name on share and report pages, drop logo border-radius

public/share.html

@@ -10,6 +10,10 @@
 :root{--yellow:#F7C90E;--dark:#211E22;--gray:#9C9C9C;--page:#f6f6f6;--card-bg:#fff;--radius:30px}
 body{font-family:'Segoe UI',system-ui,-apple-system,Roboto,sans-serif;background:var(--page);color:var(--dark);min-height:100dvh}
 .hero{background:var(--yellow);padding:44px 20px 52px;text-align:center;position:relative;overflow:hidden}
+.hero .brand{display:flex;align-items:center;justify-content:center;gap:14px;margin-bottom:16px}
+.hero .brand[hidden]{display:none}
+.hero .brand .brand-logo{height:52px;width:auto;max-width:min(42vw,300px);object-fit:contain;display:block}
+.hero .brand .brand-name{font-size:1.05rem;font-weight:800;letter-spacing:-.02em;color:var(--dark);opacity:.8}
 .hero h1{font-size:clamp(1.6rem,4.5vw,2.9rem);font-weight:800;line-height:1.05;letter-spacing:-.02em;color:var(--dark);max-width:900px;margin:0 auto}
 .hero .chips{margin-top:20px;display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
 .hero .chip{background:#fff;color:var(--dark);border-radius:999px;padding:8px 18px;font-size:.88rem;font-weight:600;box-shadow:5px 5px 10px rgba(216,173,0,.25)}
@@ -88,6 +92,10 @@ body{font-family:'Segoe UI',system-ui,-apple-system,Roboto,sans-serif;background
 </head>
 <body>
 <section class="hero">
+  <div class="brand" id="brandHead" hidden>
+    <img class="brand-logo" id="brandLogo" alt="" hidden>
+    <span class="brand-name" id="brandName" hidden></span>
+  </div>
   <h1 id="title">Загрузка...</h1>
   <div class="chips" id="chips"></div>
 </section>