fix: chunked base64 encoding to avoid JS argument overflow — v1.2

site/templates/drhider.html

@@ -64,7 +64,7 @@
   <a href="/">Сверка договоров</a>
   <span class="sep">|</span>
   <strong>DrHider</strong>
-  <span style="font-size:11px;color:var(--muted);">v1.1</span>
+  <span style="font-size:11px;color:var(--muted);">v1.2</span>
 </header>
 
 <main>
@@ -126,7 +126,12 @@ BTN.onclick = async () => {
     const payload = [];
     for (const f of files) {
       const buf = await f.arrayBuffer();
-      const b64 = btoa(String.fromCharCode(...new Uint8Array(buf)));
+      const bytes = new Uint8Array(buf);
+      let b64 = '';
+      for (let i = 0; i < bytes.length; i += 8192) {
+        b64 += String.fromCharCode.apply(null, bytes.slice(i, i + 8192));
+      }
+      b64 = btoa(b64);
       payload.push({name: f.name, data: b64, type: f.type || ''});
     }
     setStatus('progress', '⏳ Обработка... 0с');