fix: wallet page layout - sticky sidebar with scroll, full-width owner summary below

- Sidebar: sticky with height=100vh, search field, internal scroll for user list
- Owner Summary: full-width below user/wallet section, not inside right column
- Wallet main: normal flow scrolling, not fixed height

src/admin/public/style.css

@@ -355,7 +355,7 @@ pre { font-size: 0.8rem; white-space: pre-wrap; word-break: break-all; max-width
   padding: 0;
   position: sticky;
   top: 1rem;
-  max-height: calc(100vh - 2rem);
+  height: calc(100vh - 2rem);
   display: flex;
   flex-direction: column;
   overflow: hidden;
@@ -438,10 +438,19 @@ pre { font-size: 0.8rem; white-space: pre-wrap; word-break: break-all; max-width
   min-width: 0;
 }
 
-.stats-section {
+.wallet-page {
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+}
+
+.wallet-bottom {
   margin-top: 2rem;
-  border-top: 2px solid var(--border);
+}
+
+.stats-section {
   padding-top: 1.5rem;
+  border-top: 2px solid var(--border);
 }
 
 .stats-section h2 {

src/admin/views/wallets.js

@@ -169,6 +169,7 @@ export function renderWalletLayout(users, selectedUser, wallets, stats, seedPhra
     </div>` : '';
 
   const content = `
+    <div class="wallet-page">
       <div class="wallet-layout">
         <aside class="wallet-sidebar">
           <div class="wallet-sidebar-header">
@@ -189,9 +190,10 @@ export function renderWalletLayout(users, selectedUser, wallets, stats, seedPhra
               <tbody>${walletRows}</tbody>
             </table>
           ` : '<p class="muted">Select a user to view wallets</p>'}
-        ${ownerSection}
         </section>
       </div>
+      ${ownerSection ? `<div class="wallet-bottom">${ownerSection}</div>` : ''}
+    </div>
     <script>
     (function() {
       var search = document.getElementById('user-search');