diff --git a/ui-electrobun/public/resize-test.html b/ui-electrobun/public/resize-test.html
index d3513d2..d2f7d74 100644
--- a/ui-electrobun/public/resize-test.html
+++ b/ui-electrobun/public/resize-test.html
@@ -1,82 +1,32 @@
 <!DOCTYPE html>
 <html>
 <head>
+<meta charset="utf-8">
 <style>
   * { margin: 0; padding: 0; box-sizing: border-box; }
-  body { background: #1e1e2e; color: #cdd6f4; font-family: monospace; overflow: hidden; }
-  .rz { position: fixed; z-index: 9999; background: rgba(255,0,0,0.2); }
-  .rz-n  { top: 0; left: 12px; right: 12px; height: 8px; cursor: n-resize; }
-  .rz-s  { bottom: 0; left: 12px; right: 12px; height: 8px; cursor: s-resize; }
-  .rz-e  { right: 0; top: 12px; bottom: 12px; width: 8px; cursor: e-resize; }
-  .rz-w  { left: 0; top: 12px; bottom: 12px; width: 8px; cursor: w-resize; }
-  .rz-ne { top: 0; right: 0; width: 12px; height: 12px; cursor: ne-resize; }
-  .rz-nw { top: 0; left: 0; width: 12px; height: 12px; cursor: nw-resize; }
-  .rz-se { bottom: 0; right: 0; width: 12px; height: 12px; cursor: se-resize; }
-  .rz-sw { bottom: 0; left: 0; width: 12px; height: 12px; cursor: sw-resize; }
-  #log { padding: 40px; font-size: 13px; color: #a6e3a1; white-space: pre-wrap; }
-  h2 { padding: 20px 40px 0; }
+  body { background: #1e1e2e; color: #cdd6f4; font-family: monospace; font-size: 14px; }
+  h2 { padding: 20px 40px 10px; }
+  p { padding: 0 40px 10px; color: #a6adc8; }
+  #log { padding: 10px 40px; color: #a6e3a1; white-space: pre-wrap; max-height: 80vh; overflow-y: auto; }
 </style>
 </head>
 <body>
-  <div class="rz rz-n"></div><div class="rz rz-s"></div>
-  <div class="rz rz-e"></div><div class="rz rz-w"></div>
-  <div class="rz rz-ne"></div><div class="rz rz-nw"></div>
-  <div class="rz rz-se"></div><div class="rz rz-sw"></div>
-
-  <h2>Resize Stub — Electrobun + libagor-resize.so</h2>
-  <div id="log">Waiting for RPC...\n</div>
+  <h2>Resize Test - Native C Library</h2>
+  <p>The C library (libagor-resize.so) connects button-press-event directly on the GtkWindow.</p>
+  <p>It does edge hit-test internally (8px border) and calls gtk_window_begin_resize_drag.</p>
+  <p><b>Move your mouse to the window edges. Click and drag to resize.</b></p>
+  <p>No RPC needed. Check the terminal for [agor-resize] logs.</p>
+  <p>Window size: <span id="size"></span></p>
+  <div id="log"></div>
   <script>
-    const log = document.getElementById('log');
-    function L(msg) { log.textContent += msg + '\n'; log.scrollTop = log.scrollHeight; }
-
-    const EDGES = {
-      'rz-n': 'n', 'rz-s': 's', 'rz-e': 'e', 'rz-w': 'w',
-      'rz-ne': 'ne', 'rz-nw': 'nw', 'rz-se': 'se', 'rz-sw': 'sw',
-    };
-
-    // Wait for Electrobun RPC to be available
-    function waitForRpc() {
-      // Try multiple possible global names
-      const eb = window.electrobun || window.Electrobun || window.__electrobun;
-      if (eb && eb.rpc) {
-        L('RPC available! (' + Object.keys(eb.rpc).join(', ') + ')');
-        window._rpc = eb.rpc;
-        setupHandles();
-      } else {
-        L('Waiting for electrobun.rpc... (globals: ' +
-          ['electrobun','Electrobun','__electrobun'].filter(k => k in window).join(',') + ')');
-        setTimeout(waitForRpc, 500);
-      }
-    }
-
-    function setupHandles() {
-      document.querySelectorAll('.rz').forEach(el => {
-        el.addEventListener('mousedown', (e) => {
-          e.preventDefault();
-          e.stopPropagation();
-          const cls = [...el.classList].find(c => c.startsWith('rz-'));
-          const edge = EDGES[cls];
-          if (!edge) return;
-          L('mousedown edge=' + edge + ' screen=' + e.screenX + ',' + e.screenY);
-
-          // Call native resize via RPC
-          try {
-            window._rpc.request['window.beginResize']({ edge })
-              .then(r => L('RPC result: ' + JSON.stringify(r)))
-              .catch(err => L('RPC error: ' + err));
-          } catch (err) {
-            L('RPC call error: ' + err);
-          }
-        });
-      });
-      L('Handles wired. Click any red edge to resize.');
-    }
-
-    waitForRpc();
-
-    window.addEventListener('resize', () => {
-      L('RESIZE event: ' + window.innerWidth + 'x' + window.innerHeight);
-    });
+    const sizeEl = document.getElementById('size');
+    const logEl = document.getElementById('log');
+    function L(msg) { logEl.textContent += msg + '\n'; }
+    function updateSize() { sizeEl.textContent = window.innerWidth + 'x' + window.innerHeight; }
+    updateSize();
+    window.addEventListener('resize', () => { updateSize(); L('RESIZE: ' + window.innerWidth + 'x' + window.innerHeight); });
+    L('Page loaded. Native C library handles resize - watch terminal for [agor-resize] logs.');
+    L('Click near any edge (within 8px of window border) to trigger native resize.');
   </script>
 </body>
 </html>
