diff --git a/CHANGELOG.md b/CHANGELOG.md
index e434fa01..bd494a08 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -72,6 +72,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   conversion identifiers from responses, reports attempted, changed, failed,
   skipped-data, and deferred-budget counters separately, and exposes fixed
   low-cardinality timeout, lookup, validation, and persistence failure counters.
+- Attachment and comment modal refreshes build a refresh-scoped task lookup map
+  before rendering returned rows, and the static document declares preload hints
+  for `cloud-sync.js` and `analytics.js`; buyer-visible latency or startup gains
+  remain measurement-gated rather than inferred from this structural change.
 - Toast notifications and synchronization feedback now expose advisory updates
   as explicit polite, atomic WAI-ARIA status regions without adding keyboard
   stops, and cloud toast feedback now has a shipped visual state so the same
@@ -99,7 +103,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial ScopeWeave Planner release with tree-table editing,
   cumulative metrics, CSV import/export, and Gantt modal.
-- `wbs.json` seed loading plus browser autosave and optional file sync.
 - Playwright E2E coverage for add/edit hierarchy flows, delete
   confirmation, subtree drag-and-drop, and JSON sync shape.
 - GitHub Pages deployment workflow and operator documentation.
diff --git a/cloud-sync.js b/cloud-sync.js
index 0e015ebe..84858426 100644
--- a/cloud-sync.js
+++ b/cloud-sync.js
@@ -1228,11 +1228,6 @@ async function openAttachmentsModal() {
   list.className = 'team-list';
   panel.appendChild(list);
 
-  const taskName = (id) => {
-    const t = (host?.getState?.()?.tasks || []).find((x) => x.id === id);
-    return t ? (t.name || t.task || id) : id;
-  };
-
   async function refresh() {
     list.textContent = '';
     const q = sel.value ? `?taskId=${encodeURIComponent(sel.value)}` : '';
@@ -1243,6 +1238,13 @@ async function openAttachmentsModal() {
       list.appendChild(li);
       return;
     }
+
+    const tasksMap = new Map((host?.getState?.()?.tasks || []).map(t => [t.id, t]));
+    const taskName = (id) => {
+      const t = tasksMap.get(id);
+      return t ? (t.name || t.task || id) : id;
+    };
+
     for (const a of data.attachments) {
       const li = document.createElement('li');
       const who = document.createElement('span');
@@ -1365,11 +1367,6 @@ async function openCommentsModal() {
   form.append(input, send);
   panel.appendChild(form);
 
-  const taskName = (id) => {
-    const t = (host?.getState?.()?.tasks || []).find((x) => x.id === id);
-    return t ? (t.name || t.task || id) : id;
-  };
-
   async function refresh() {
     list.textContent = '';
     const q = sel.value ? `?taskId=${encodeURIComponent(sel.value)}` : '';
@@ -1380,6 +1377,13 @@ async function openCommentsModal() {
       list.appendChild(li);
       return;
     }
+
+    const tasksMap = new Map((host?.getState?.()?.tasks || []).map(t => [t.id, t]));
+    const taskName = (id) => {
+      const t = tasksMap.get(id);
+      return t ? (t.name || t.task || id) : id;
+    };
+
     for (const cm of data.comments) {
       const li = document.createElement('li');
       const who = document.createElement('span');
diff --git a/index.html b/index.html
index d24b2a88..879ad03b 100644
--- a/index.html
+++ b/index.html
@@ -7,6 +7,8 @@
     <title>ScopeWeave Planner</title>
     <link rel="preload" href="styles.css" as="style" />
     <link rel="modulepreload" href="app.js" />
+    <link rel="modulepreload" href="cloud-sync.js" />
+    <link rel="modulepreload" href="analytics.js" />
     <link rel="stylesheet" href="styles.css" />
     <link rel="stylesheet" href="toast-state.css" />
   </head>