feat(dashboard): drag-resizable event/error log dock height (persisted)

Add a drag handle on the top edge of the bottom log dock so its height can be
adjusted freely (80px .. 82vh), persisted in localStorage. Dock max-height
raised to 90vh; syncDockPad keeps the page bottom padding in step so the last
turn never hides behind the dock. Handle is hidden while the dock is collapsed.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

wsai/dashboard.py

@@ -936,7 +936,13 @@ PAGE = r"""<!DOCTYPE html>
   main{padding-bottom:46px}
   .logdock{position:fixed;left:0;right:0;bottom:0;z-index:15;background:#0a0e13;
     border-top:1px solid var(--line);display:flex;flex-direction:column;
-    max-height:45vh;box-shadow:0 -8px 24px rgba(0,0,0,.35)}
+    max-height:90vh;box-shadow:0 -8px 24px rgba(0,0,0,.35)}
+  .logresize{height:7px;cursor:ns-resize;background:#0d141c;border-bottom:1px solid var(--line);
+    flex:0 0 auto;touch-action:none}
+  .logresize:hover{background:#1d3d54}
+  .logresize::before{content:"";display:block;width:44px;height:3px;margin:2px auto 0;
+    border-radius:2px;background:#2a3a49}
+  .logdock.collapsed .logresize{display:none}
   .logbar{display:flex;align-items:center;gap:8px;padding:6px 12px;border-bottom:1px solid var(--line);
     background:#0d141c;flex-wrap:wrap}
   .logtoggle{background:none;border:none;color:var(--fg);font-size:12.5px;cursor:pointer;font-weight:600;padding:4px 6px}
@@ -1071,6 +1077,7 @@ PAGE = r"""<!DOCTYPE html>
   <div id="empty" class="empty">아직 대화가 없습니다. 사용자가 말하면 여기에 단계별로 나타납니다.</div>
 </main>
 <div id="logdock" class="logdock">
+  <div id="logResize" class="logresize" title="드래그해서 로그 높이 조절"></div>
   <div class="logbar">
     <button id="logToggle" class="logtoggle">▾ 이벤트 / 오류 로그</button>
     <input id="logSearch" class="logsearch" placeholder="로그 검색 (텍스트)">
@@ -1509,6 +1516,26 @@ $('logToggle').onclick = ()=>{
   syncDockPad();
 };
 window.addEventListener('resize', syncDockPad);
+// Drag the top edge of the log dock to resize its height (persisted).
+(function(){
+  const dock=$('logdock'), body=$('logbody'), handle=$('logResize');
+  const KEY='wsai_logH';
+  const maxH = ()=> Math.round(window.innerHeight*0.82);
+  function setH(px){ const h=Math.max(80, Math.min(maxH(), Math.round(px)));
+    body.style.height=h+'px'; localStorage.setItem(KEY, h); syncDockPad(); }
+  setH(parseInt(localStorage.getItem(KEY)||'180', 10));
+  let startY=0, startH=0, dragging=false;
+  handle.addEventListener('pointerdown', (e)=>{
+    if(dock.classList.contains('collapsed')) return;
+    dragging=true; startY=e.clientY; startH=body.offsetHeight;
+    try{ handle.setPointerCapture(e.pointerId); }catch(_){}
+    e.preventDefault();
+  });
+  handle.addEventListener('pointermove', (e)=>{ if(dragging) setH(startH + (startY - e.clientY)); });
+  const end=(e)=>{ if(!dragging) return; dragging=false; try{ handle.releasePointerCapture(e.pointerId); }catch(_){} };
+  handle.addEventListener('pointerup', end);
+  handle.addEventListener('pointercancel', end);
+})();
 $('logSearch').oninput = renderLogs;
 $('logLevel').onchange = renderLogs;
 $('logClear').onclick = async ()=>{