feat(assets): add dimension analysis and authorized user previews

Refactor asset drilldowns with combined dimension filters, parent summaries and progressive loading. Add the hidden /who read-only permission preview with scoped authorization, identity mapping and audit logging. Refine inventory counts and AI问数 presentation.

src/modules/assets/assistant/AssetAssistant.tsx

@@ -398,7 +398,7 @@ export default function AssetAssistant({
     <section
       ref={page}
       className={`aq-shell aq-page aq-${theme}`}
-      aria-label="资产 AI 问数"
+      aria-label="AI问数"
     >
       <aside className="aq-sidebar">
         <div className="aq-brand">
@@ -406,8 +406,7 @@ export default function AssetAssistant({
             <Sparkles size={19} />
           </div>
           <div>
-            <strong>羚牛 · 资产智能</strong>
-            <span>ASSET INTELLIGENCE</span>
+            <strong>AI问数</strong>
           </div>
         </div>
         <button className="aq-new" onClick={reset}>
@@ -423,7 +422,7 @@ export default function AssetAssistant({
           }}
         >
           <MessageSquare size={16} />
-          AI 问数<span className="aq-beta">BETA</span>
+          AI问数<span className="aq-beta">BETA</span>
         </button>
         <button className="aq-nav" onClick={close}>
           <BarChart3 size={16} />
@@ -471,9 +470,9 @@ export default function AssetAssistant({
         <header className="aq-header">
           <div>
             <Sparkles size={17} />
-            <h1>AI 问数</h1>
+            <h1>AI问数</h1>
             <span className="aq-header-divider" />
-            <span className="aq-header-subtitle">你的资产分析助手</span>
+            <span className="aq-header-subtitle">用对话分析资产数据</span>
           </div>
           <div>
             <button
@@ -562,10 +561,6 @@ export default function AssetAssistant({
                   </button>
                 ))}
               </div>
-              <div className="aq-welcome-note">
-                <Database size={14} />
-                只读查询 · 真实数据 · 可追溯明细
-              </div>
             </div>
           ) : (
             <div className="aq-turns">