fix: 查询结果固定布局 - 编辑器/sidebar不被结果挤走 + 结果区可折叠

frontend/src/pages/QueriesPage.tsx

@@ -126,6 +126,7 @@ export default function QueriesPage() {
   const [templateSearch, setTemplateSearch] = useState('');
   const [templateCategory, setTemplateCategory] = useState('all');
   const [showSidebar, setShowSidebar] = useState(true);
+  const [showResult, setShowResult] = useState(true);
   const [showHistory, setShowHistory] = useState(false);
   const [sortState, setSortState] = useState<SortState>({ column: null, direction: null });
   const [rowHeight] = useState(36);
@@ -328,9 +329,10 @@ export default function QueriesPage() {
   return (
     <div className="flex h-[calc(100vh-3rem)] gap-0">
       {/* ====== 主区域 ====== */}
-      <div className="flex-1 flex flex-col min-w-0 overflow-y-auto p-5 space-y-4">
+      <div className="flex-1 flex flex-col min-w-0 overflow-hidden">
 
         {/* -- 顶栏: 实例+库选择 -- */}
+        <div className="shrink-0 px-5 pt-4 pb-2">
           <div className="flex items-center gap-3 flex-wrap">
             <div className="flex items-center gap-2 flex-1 min-w-0">
               {selectedInstance && dbTypeIcon[dbType] && (
@@ -387,9 +389,11 @@ export default function QueriesPage() {
               </button>
             </div>
           </div>
+        </div>
 
         {/* -- 模板选择器 -- */}
         {showTemplates && (
+          <div className="shrink-0 px-5 pb-2">
             <div className="dg-card p-3">
               <div className="flex items-center gap-2 mb-3 flex-wrap">
                 {templateCategories.map(cat => (
@@ -424,10 +428,12 @@ export default function QueriesPage() {
                 </div>
               )}
             </div>
+          </div>
         )}
 
-        {/* -- 编辑器 + 侧边栏 -- */}
+        {/* -- 编辑器 + 侧边栏 (上半区，不随结果滚动) -- */}
-        <div className="flex gap-3 flex-1 min-h-0">
+        <div className="shrink-0 px-5 pb-2">
+          <div className="flex gap-3">
             {/* Schema 侧边栏 */}
             {showSidebar && instanceId && (
               <div className="w-[280px] shrink-0">
@@ -444,9 +450,9 @@ export default function QueriesPage() {
 
             {/* SQL 编辑器 */}
             <div className="flex-1 min-w-0 flex flex-col">
-            <div className="dg-card overflow-hidden flex-1 flex flex-col">
+              <div className="dg-card overflow-hidden flex flex-col">
                 <SqlEditor value={sql} onChange={setSql} placeholder={placeholderMap[dbType]}
-                language={editorLang} height="240px" onExecute={handleExecute}
+                  language={editorLang} height="200px" onExecute={handleExecute}
                   schema={(dbType === 'mysql' || dbType === 'postgres' || dbType === 'postgresql') ? editorSchema : undefined} />
                 <div className="flex items-center justify-between px-3 py-1.5 bg-[var(--dg-bg-tertiary)] border-t border-[var(--dg-border)] text-[11px] dg-text-muted">
                   <span className="flex items-center gap-1.5">
@@ -461,22 +467,34 @@ export default function QueriesPage() {
               </div>
             </div>
           </div>
+        </div>
 
         {/* -- 错误提示 -- */}
         {error && (
+          <div className="shrink-0 px-5 pb-2">
             <div className="flex items-center gap-2 p-3 bg-red-500/10 border border-red-500/20 rounded-lg text-sm text-red-400">
               <AlertTriangle className="w-4 h-4 shrink-0" />{error}
             </div>
+          </div>
         )}
 
-        {/* -- 查询结果 -- */}
+        {/* -- 查询结果 (下半区，独立滚动) -- */}
         {result && (
-          <div className="dg-card overflow-hidden">
+          <div className="flex-1 min-h-0 px-5 pb-4 overflow-hidden flex flex-col">
-            <div className="border-b border-[var(--dg-border)] py-2.5 px-4">
+            <div className="dg-card overflow-hidden flex-1 flex flex-col">
+              {/* 结果标题栏 + 折叠按钮 */}
+              <div
+                className="shrink-0 border-b border-[var(--dg-border)] py-2 px-4 cursor-pointer hover:bg-[var(--dg-bg-hover)] transition-colors"
+                onClick={() => setShowResult(!showResult)}
+              >
                 <div className="flex items-center justify-between flex-wrap gap-2">
                   <span className="text-sm font-semibold flex items-center gap-2">
                     <CheckCircle className="w-4 h-4 text-green-400" />
                     查询结果
+                    {showResult
+                      ? <ChevronDown className="w-3.5 h-3.5 text-[var(--dg-text-muted)]" />
+                      : <ChevronRight className="w-3.5 h-3.5 text-[var(--dg-text-muted)]" />
+                    }
                   </span>
                   <div className="flex items-center gap-3 text-xs dg-text-secondary">
                     <span className="flex items-center gap-1"><Clock className="w-3 h-3" />{result.execution_time_ms || result.cost_ms || 0}ms</span>
@@ -490,7 +508,7 @@ export default function QueriesPage() {
                       </>
                     )}
                     {result.rows?.length > 0 && (
-                    <button onClick={handleExportResult}
+                      <button onClick={(e) => { e.stopPropagation(); handleExportResult(); }}
                         className="dg-btn dg-btn-ghost dg-btn-sm">
                         <Download className="w-3 h-3" />导出 CSV
                       </button>
@@ -498,7 +516,10 @@ export default function QueriesPage() {
                   </div>
                 </div>
               </div>
-            <div className="p-0">
+
+              {/* 结果内容（可折叠） */}
+              {showResult && (
+                <div className="flex-1 min-h-0 overflow-auto p-0">
               {result.raw_text !== undefined ? (
                 /* Raw value display (Redis GET/HGET/TTL etc.) */
                 <div className="p-4">
@@ -517,7 +538,7 @@ export default function QueriesPage() {
                   </div>
                 </div>
               ) : result.columns && result.columns.length > 0 ? (
-                <div ref={resultContainerRef} onScroll={handleResultScroll} className="overflow-auto max-h-[500px]">
+                <div ref={resultContainerRef} onScroll={handleResultScroll} className="overflow-auto">
                   <table className="w-full text-sm">
                     <thead className="sticky top-0 z-10">
                       <tr className="dg-table-header">
@@ -602,15 +623,19 @@ export default function QueriesPage() {
                 </div>
               )}
                 </div>
+              )}
+            </div>
           </div>
         )}
 
         {/* -- 安全提示 -- */}
+        <div className="shrink-0 px-5 pb-3">
           <div className="flex items-center gap-2 px-3 py-2 bg-yellow-500/5 border border-yellow-500/15 rounded-lg text-xs text-[var(--dg-text-muted)]">
             <AlertTriangle className="w-3.5 h-3.5 text-yellow-400 shrink-0" />
             查询结果中的敏感字段将自动脱敏。MySQL/PG 仅支持 SELECT 查询，Redis/MongoDB 支持只读命令。
           </div>
         </div>
+      </div>
 
       {/* ====== 右侧历史抽屉 ====== */}
       {showHistory && (