diff --git a/.env.example b/.env.example
index 0437563..21f156e 100644
--- a/.env.example
+++ b/.env.example
@@ -1,6 +1,8 @@
 ADMIN_USERNAME=admin
 ADMIN_PASSWORD=сложный-пароль-админки
 DB_PASSWORD=случайная-длинная-строка
+# Лимит размера загружаемого на восстановление бэкапа, МБ (по умолчанию 500)
+BACKUP_UPLOAD_LIMIT_MB=500
 
 # Hugging Face token (нужен для закрытых/приватных репозиториев моделей)
 HUGGINGFACE_TOKEN=
diff --git a/docker-compose.yml b/docker-compose.yml
index 8bb4dad..61a80c6 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -29,6 +29,7 @@ services:
       DATABASE_URL: postgres://app:${DB_PASSWORD}@db:5432/whereldo
       ADMIN_PASSWORD: ${ADMIN_PASSWORD}
       ADMIN_USERNAME: ${ADMIN_USERNAME:-admin}
+      BACKUP_UPLOAD_LIMIT_MB: ${BACKUP_UPLOAD_LIMIT_MB:-500}
       AI_MODEL: ${AI_MODEL:-qwen2.5-1.5b-instruct-q4_k_m.gguf}
       AI_PROMPT: ${AI_PROMPT:-}
       NODE_ENV: production
diff --git a/public/admin.css b/public/admin.css
index feff405..b3e3575 100644
--- a/public/admin.css
+++ b/public/admin.css
@@ -373,6 +373,12 @@ body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;b
 .ai-badge-skipped,.ai-badge-reverted{background:rgba(148,163,184,.18);color:var(--muted)}
 .ai-badge-ic.ai-badge-processing .lucide-loader{animation:spin 1s linear infinite}
 @keyframes spin{to{transform:rotate(360deg)}}
+.ai-details{background:none;border:none;padding:0;margin:0;color:var(--accent);font-size:.8rem;cursor:pointer;white-space:nowrap}
+.ai-details:hover{text-decoration:underline}
+.ai-detail-block{margin-top:4px}
+.ai-detail-block + .ai-detail-block{margin-top:14px}
+.ai-detail-label{font-size:.75rem;color:var(--muted);margin-bottom:6px;font-weight:600}
+.ai-detail-block pre{margin:0;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:12px;white-space:pre-wrap;word-break:break-word;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.78rem;line-height:1.45;color:var(--text);max-height:34vh;overflow:auto}
 .ai-status{margin-top:6px;font-size:.78rem;color:var(--muted)}
 .ai-queue{margin-top:8px;font-size:.78rem;color:var(--muted)}
 
diff --git a/public/js/worker.js b/public/js/worker.js
index 0a74edb..fa50f6c 100644
--- a/public/js/worker.js
+++ b/public/js/worker.js
@@ -17,6 +17,7 @@ const STATUS_BADGE = {
 let state = null;
 let refreshTimer = null;
 let busy = false;
+let recentRows = [];
 
 function fmtDur(ms) {
   if (ms === null || ms === undefined || ms < 0) return '—';
@@ -141,13 +142,15 @@ function renderRecent() {
   const empty = document.getElementById('recentEmpty');
   if (!rows.length) { tbody.innerHTML = ''; empty.style.display = 'block'; return; }
   empty.style.display = 'none';
-  tbody.innerHTML = rows.map(r => `
+  recentRows = rows;
+  tbody.innerHTML = rows.map((r, i) => `
     <tr>
       <td style="white-space:nowrap">${fmtTime(r.ai_checked_at)}</td>
       <td>${esc(r.student_name)}</td>
       <td style="color:var(--muted)">${esc(r.group_name || '')}</td>
       <td>${statusBadge(r.ai_status)}</td>
       <td>${r.changed ? '✏️ исправлен' : '—'}</td>
+      <td><button type="button" class="ai-details" data-ai-idx="${i}">Подробнее</button></td>
     </tr>`).join('');
 }
 
@@ -225,6 +228,23 @@ document.getElementById('requeueBtn').addEventListener('click', requeueFailed);
 document.getElementById('recentFilter').addEventListener('change', renderRecent);
 document.getElementById('autoRefresh').addEventListener('change', e => setAutoRefresh(e.target.checked));
 
+document.getElementById('recentTable').addEventListener('click', e => {
+  const btn = e.target.closest('.ai-details');
+  if (!btn) return;
+  const r = recentRows[parseInt(btn.dataset.aiIdx, 10)];
+  if (!r) return;
+  document.getElementById('aiDetailTitle').textContent = `ИИ-проверка #${r.id} — ${r.student_name}`;
+  document.getElementById('aiDetailInput').textContent = r.description_original || '—';
+  document.getElementById('aiDetailOutput').textContent = r.description_ai || '—';
+  document.getElementById('aiDetailModal').classList.add('open');
+});
+document.getElementById('aiDetailCloseBtn').addEventListener('click', () => {
+  document.getElementById('aiDetailModal').classList.remove('open');
+});
+document.getElementById('aiDetailModal').addEventListener('click', e => {
+  if (e.target === e.currentTarget) e.currentTarget.classList.remove('open');
+});
+
 (async () => {
   if (await requireAdminPage()) {
     buildSidebar(document.body.dataset.page);
diff --git a/public/worker.html b/public/worker.html
index 0a86d82..27910d5 100644
--- a/public/worker.html
+++ b/public/worker.html
@@ -69,7 +69,7 @@
         <div class="audit-wrap">
           <table class="audit-table" id="recentTable">
             <thead>
-              <tr><th>Проверено</th><th>Ученик</th><th>Группа</th><th>Статус</th><th>Изменения</th></tr>
+              <tr><th>Проверено</th><th>Ученик</th><th>Группа</th><th>Статус</th><th>Изменения</th><th>Детали</th></tr>
             </thead>
             <tbody></tbody>
           </table>
@@ -95,6 +95,22 @@
     </div>
   </div>
 </div>
+<div class="modal-overlay" id="aiDetailModal">
+  <div class="edit-modal" style="max-width:680px">
+    <h3 id="aiDetailTitle">Детали ИИ-проверки</h3>
+    <div class="ai-detail-block">
+      <div class="ai-detail-label">Отправлено в модель</div>
+      <pre id="aiDetailInput"></pre>
+    </div>
+    <div class="ai-detail-block">
+      <div class="ai-detail-label">Ответ модели</div>
+      <pre id="aiDetailOutput"></pre>
+    </div>
+    <div class="card-foot" style="justify-content:flex-end;gap:8px">
+      <button type="button" class="cancel" id="aiDetailCloseBtn">Закрыть</button>
+    </div>
+  </div>
+</div>
 <div class="toast" id="toast"></div>
 <script src="vendor/lucide.min.js"></script>
 <script src="admin.js"></script>
diff --git a/server.js b/server.js
index 98234fd..4e222ca 100644
--- a/server.js
+++ b/server.js
@@ -749,6 +749,8 @@ async function aiCorrectText(text) {
   }
 }
 
+const BACKUP_UPLOAD_LIMIT_MB = parseInt(process.env.BACKUP_UPLOAD_LIMIT_MB || '500', 10);
+
 const uploadBackup = multer({
   storage: multer.diskStorage({
     destination: (_, __, cb) => {
@@ -760,7 +762,7 @@ const uploadBackup = multer({
       cb(null, `backup-${Date.now()}${ext}`);
     },
   }),
-  limits: { fileSize: 50 * 1024 * 1024 },
+  limits: { fileSize: BACKUP_UPLOAD_LIMIT_MB * 1024 * 1024 },
 });
 
 const SAFE_NAME = /^[\w,.()-]+$/;
@@ -2633,6 +2635,7 @@ app.get('/api/ai/status', requireAdmin, async (_, res) => {
     ),
     pool.query(
       `SELECT e.id, e.student_name, e.ai_status, e.ai_checked_at, e.ai_error, g.name AS group_name,
+              e.description_original, e.description_ai,
               (e.description_ai IS NOT NULL AND e.description_original IS NOT NULL AND e.description_ai <> e.description_original) AS changed
        FROM entries e JOIN groups g ON g.id = e.group_id
        WHERE e.ai_checked_at IS NOT NULL AND e.deleted_at IS NULL