Transactions: show ID on Edit page and add Copy ID button

Co-authored-by:Codex-CLI-Agent
codex-cli@users.noreply.local

MoneyMap/Pages/EditTransaction.cshtml

@@ -1,11 +1,11 @@
-@page "{id:long}"
+@page "{id:long}"
 @model MoneyMap.Pages.EditTransactionModel
 @{
     ViewData["Title"] = "Edit Transaction";
 }
 
 <div class="d-flex justify-content-between align-items-center mb-3">
-    <h2>Edit Transaction</h2>
+    <h2 class="mb-0">Edit Transaction <small class="text-muted">#@Model.Transaction.Id</small> <button type="button" class="btn btn-sm btn-outline-secondary ms-2" onclick="copyTransactionId()">Copy ID</button></h2>
     <a asp-page="/Transactions" class="btn btn-outline-secondary">Back to Transactions</a>
 </div>
 
@@ -159,7 +159,7 @@
                                         </div>
                                         <small class="text-muted">
                                             @((item.Receipt.FileSizeBytes / 1024.0).ToString("F1")) KB
-                                            · @item.Receipt.UploadedAtUtc.ToLocalTime().ToString("MMM d, yyyy")
+                                            · @item.Receipt.UploadedAtUtc.ToLocalTime().ToString("MMM d, yyyy")
                                         </small>
                                         @if (!string.IsNullOrWhiteSpace(item.Receipt.Merchant))
                                         {
@@ -309,3 +309,22 @@
         });
     </script>
 }
+
+
+<script>
+  function copyTransactionId() {
+    var id = '@Model.Transaction.Id';
+    if (navigator.clipboard && window.isSecureContext) {
+      navigator.clipboard.writeText(id.toString());
+    } else {
+      var ta = document.createElement('textarea');
+      ta.value = id;
+      document.body.appendChild(ta);
+      ta.select();
+      document.execCommand('copy');
+      document.body.removeChild(ta);
+    }
+    var btns = document.querySelectorAll('button[onclick="copyTransactionId()"]');
+    btns.forEach(function(btn){ var old=btn.textContent; btn.textContent='Copied!'; setTimeout(function(){ btn.textContent=old; }, 1500); });
+  }
+</script>