fix(blog): repair pagination on public and admin interfaces

Public /blog: the handler param was named `page`, which is a reserved
route token in Razor Pages and never binds — so every page silently
showed the same first 10 posts. Renamed the query param to `pg`
([FromQuery(Name="pg")]) and updated the pagination links to match.

Admin: the posts table had no pagination and dumped all rows at once.
Added client-side pagination (10/page) with a prev/next + numbered bar
over the already-loaded posts array.

Verified: public page1=10/page2=4 with zero overlap; admin shows
‹ 1 2 › with correct row counts and active state per page.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

DrSousan.Api/wwwroot/admin/index.html

@@ -189,6 +189,13 @@ tr:hover td{background:#FAFBFC}
 .page{display:none}
 .page.active{display:block}
 
+/* ── Table pagination ── */
+.tbl-pagination{display:flex;gap:.4rem;justify-content:center;flex-wrap:wrap;padding:1rem 0 .25rem;margin-top:.5rem}
+.tbl-page-btn{min-width:34px;height:34px;padding:0 .6rem;border-radius:8px;border:1.5px solid var(--border);background:#fff;font-family:'Vazirmatn',sans-serif;font-size:.85rem;color:var(--dark);cursor:pointer;transition:all .2s}
+.tbl-page-btn:hover:not(:disabled){border-color:var(--gold);color:var(--gold)}
+.tbl-page-btn.active{background:var(--gold);border-color:var(--gold);color:#fff}
+.tbl-page-btn:disabled{opacity:.4;cursor:default}
+
 /* ── Login ── */
 .login-screen{position:fixed;inset:0;background:var(--dark);display:flex;align-items:center;justify-content:center;z-index:1000}
 .login-box{background:var(--white);border-radius:20px;padding:2.5rem;width:380px;text-align:center}
@@ -496,6 +503,7 @@ tr:hover td{background:#FAFBFC}
           <table><thead><tr><th>عنوان</th><th>دسته</th><th>کلیدواژه</th><th>بازدید</th><th>وضعیت</th><th>عملیات</th></tr></thead>
           <tbody id="postsTable"></tbody></table>
         </div>
+        <div id="postsPagination" class="tbl-pagination"></div>
       </div>
     </div>
 
@@ -2026,9 +2034,23 @@ async function deleteCat(id){if(!confirm('حذف؟'))return;await api(`/api/blog
 
 // ── Blog Posts ────────────────────────────────────────────────────────────────
 let posts=[];
+const POSTS_PER_PAGE = 10;
+let postsPage = 1;
+
 async function loadPosts(){
   posts=await api('/api/blog/posts/admin')||[];
-  document.getElementById('postsTable').innerHTML=posts.map(p=>`
+  postsPage = 1;
+  renderPostsPage();
+}
+
+function renderPostsPage(){
+  const totalPages = Math.max(1, Math.ceil(posts.length / POSTS_PER_PAGE));
+  if (postsPage > totalPages) postsPage = totalPages;
+  if (postsPage < 1) postsPage = 1;
+  const start = (postsPage - 1) * POSTS_PER_PAGE;
+  const slice = posts.slice(start, start + POSTS_PER_PAGE);
+
+  document.getElementById('postsTable').innerHTML = slice.map(p=>`
     <tr>
       <td><strong>${p.title}</strong></td>
       <td><span class="badge badge-gold">${p.category?.name||'—'}</span></td>
@@ -2041,6 +2063,26 @@ async function loadPosts(){
         <button class="btn btn-danger btn-sm" onclick="deletePost(${p.id})">حذف</button>
       </td>
     </tr>`).join('');
+
+  renderPostsPagination(totalPages);
+}
+
+function renderPostsPagination(totalPages){
+  const box = document.getElementById('postsPagination');
+  if (!box) return;
+  if (totalPages <= 1) { box.innerHTML=''; return; }
+  let html = '';
+  html += `<button class="tbl-page-btn" ${postsPage===1?'disabled':''} onclick="gotoPostsPage(${postsPage-1})">‹</button>`;
+  for (let p=1; p<=totalPages; p++){
+    html += `<button class="tbl-page-btn ${p===postsPage?'active':''}" onclick="gotoPostsPage(${p})">${p}</button>`;
+  }
+  html += `<button class="tbl-page-btn" ${postsPage===totalPages?'disabled':''} onclick="gotoPostsPage(${postsPage+1})">›</button>`;
+  box.innerHTML = html;
+}
+
+function gotoPostsPage(p){
+  postsPage = p;
+  renderPostsPage();
 }
 
 async function openPostEditor(){