Finish NNNet app shell, updates, and docs

website/assets/js/app.js

@@ -3,6 +3,8 @@ document.addEventListener('DOMContentLoaded', () => {
   const versionBadge = document.getElementById('versionBadge');
   const versionSummary = document.getElementById('versionSummary');
   const downloadMeta = document.getElementById('downloadMeta');
+  const releaseNotesSummary = document.getElementById('releaseNotesSummary');
+  const releaseNotesText = document.getElementById('releaseNotesText');
   if (!btn) return;
 
   btn.addEventListener('click', (event) => {
@@ -12,7 +14,7 @@ document.addEventListener('DOMContentLoaded', () => {
     }
   });
 
-  fetch('assets/meta/version.json', { cache: 'no-store' })
+  fetch('/assets/meta/version.json', { cache: 'no-store' })
     .then((response) => {
       if (!response.ok) {
         throw new Error(`HTTP ${response.status}`);
@@ -38,6 +40,29 @@ document.addEventListener('DOMContentLoaded', () => {
       if (meta.apkPath) {
         btn.setAttribute('href', meta.apkPath);
       }
+      if (meta.releaseNotesTitle && releaseNotesSummary) {
+        releaseNotesSummary.textContent = meta.releaseNotesTitle;
+      }
+
+      if (meta.releaseNotesPath && releaseNotesText) {
+        const notesPath = meta.releaseNotesPath.startsWith('/')
+          ? meta.releaseNotesPath
+          : `/${meta.releaseNotesPath}`;
+
+        fetch(notesPath, { cache: 'no-store' })
+          .then((response) => {
+            if (!response.ok) {
+              throw new Error(`HTTP ${response.status}`);
+            }
+            return response.text();
+          })
+          .then((notes) => {
+            releaseNotesText.innerHTML = notes.trim().replace(/\n/g, '<br>');
+          })
+          .catch(() => {
+            releaseNotesText.textContent = 'Не удалось загрузить changelog.';
+          });
+      }
     })
     .catch(() => {
       if (versionBadge) {