diff --git a/01_content/src/client/split.tsx b/01_content/src/client/split.tsx
index e6e65d6..6035081 100644
--- a/01_content/src/client/split.tsx
+++ b/01_content/src/client/split.tsx
@@ -1341,7 +1341,7 @@ function SplitWorkspace() {
           className="dsh-wt_splitDivider"
           role="separator"
           title="拖动调整宽度"
-          style={{ position: 'fixed', left: topRowX + it.left + it.width + DIVIDER / 2, top: topY, width: DIVIDER, height: topH, zIndex: 72 }}
+          style={{ position: 'fixed', left: topRowX + it.left + it.width, top: topY, width: DIVIDER, height: topH, zIndex: 72 }}
           onPointerDown={makeDividerHandler('topPane', i)}
         />
       ))}
@@ -1352,7 +1352,7 @@ function SplitWorkspace() {
           className="dsh-wt_splitDivider"
           role="separator"
           title="拖动调整宽度"
-          style={{ position: 'fixed', left: contentX + it.left + it.width + DIVIDER / 2, top: bodyTop, width: DIVIDER, height: mainH, zIndex: 72 }}
+          style={{ position: 'fixed', left: contentX + it.left + it.width, top: bodyTop, width: DIVIDER, height: mainH, zIndex: 72 }}
           onPointerDown={makeDividerHandler('pane', i)}
         />
       ))}
diff --git a/02_process/worklogs/2026-08-16_worktable-v2.md b/02_process/worklogs/2026-08-16_worktable-v2.md
index 6f1f2d6..8bcdada 100644
--- a/02_process/worklogs/2026-08-16_worktable-v2.md
+++ b/02_process/worklogs/2026-08-16_worktable-v2.md
@@ -582,3 +582,12 @@
 - 验证（functional-diag STEP10 扩展 + 种子加 1 条快捷方式）：heights ta/pr/layout/shortcut 全 34px；
   四类图标 computed 全 15px；删除确认等既有断言不变；ERRORS_COUNT: 0。
 - 备注：纯客户端改动，F5 即生效，无需重启 dsh web。
+## 补记（窗间竖向分隔线居中修正）
+
+- 用户反馈：窗口之间的竖向可拖动分隔线偏右，不在两个窗口缝隙的正中。
+- 根因：窗格 border-box、allocate 留 6px 缝；分隔线定位写成了「窗右缘 + DIVIDER/2」
+  （左 = 缝右半起点），6px 线右半压进下一个窗口 → 视觉偏右 3px。
+- 处理：主行与顶部行内垂直分隔线 left 去掉 + DIVIDER/2，直接对齐窗右缘（[缝左, 缝左+6]），
+  中心 = 缝中心。聊天/左列/上下水平分隔线本就骑缝居中，不动。
+- 验证（functional-diag STEP2 dividerAlign）：paneRight=514、divLeft=514、divWidth=6、
+  centerOffset=0（修复前 +3）；全 STEP 回归 ERROR_COUNT: 0。纯客户端改动，F5 生效。
diff --git a/04_test/functional-diag.cjs b/04_test/functional-diag.cjs
index fb5e2b2..189d363 100644
--- a/04_test/functional-diag.cjs
+++ b/04_test/functional-diag.cjs
@@ -68,7 +68,7 @@ const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
   console.log('STEP1:', JSON.stringify(step1));
   await sleep(900);
 
-  const step2 = await evaluate("(function(){ var out={}; out.pickers=document.querySelectorAll('.dsh-wt_panePicker').length; out.pickButtons=document.querySelectorAll('.dsh-wt_panePick').length; out.pickerModes=Array.prototype.map.call(document.querySelectorAll('.dsh-wt_panePicker'),function(el){return el.className}); out.pickSize=(function(){var b=document.querySelector('.dsh-wt_panePick'); if(!b) return null; var r=b.getBoundingClientRect(); return {w:r.width,h:r.height};})(); var st=window.__dshWorktable.splitStore; st.openTab('main',0,{kind:'builtin',type:'browser'}); st.openTab('main',1,{kind:'builtin',type:'explorer'}); return JSON.stringify(out) })()");
+  const step2 = await evaluate("(function(){ var out={}; out.pickers=document.querySelectorAll('.dsh-wt_panePicker').length; out.pickButtons=document.querySelectorAll('.dsh-wt_panePick').length; out.pickerModes=Array.prototype.map.call(document.querySelectorAll('.dsh-wt_panePicker'),function(el){return el.className}); out.pickSize=(function(){var b=document.querySelector('.dsh-wt_panePick'); if(!b) return null; var r=b.getBoundingClientRect(); return {w:r.width,h:r.height};})(); out.dividerAlign=(function(){ var panes=document.querySelectorAll('.dsh-wt_pane'); var divs=document.querySelectorAll('.dsh-wt_splitDivider:not(.dsh-wt_splitDividerH)'); if(panes.length<2||divs.length<1) return null; var p0=panes[0].getBoundingClientRect(); var d=divs[0].getBoundingClientRect(); return {paneRight:Math.round(p0.right),divLeft:Math.round(d.left),divWidth:Math.round(d.width),centerOffset:Math.round((d.left+d.width/2)-(p0.right+3))}; })(); var st=window.__dshWorktable.splitStore; st.openTab('main',0,{kind:'builtin',type:'browser'}); st.openTab('main',1,{kind:'builtin',type:'explorer'}); return JSON.stringify(out) })()");
   console.log('STEP2:', JSON.stringify(step2));
   await sleep(900);