fixed invalid post title breaking links

frontend/src/components/react/admin/Dashboard.tsx

@@ -78,7 +78,7 @@ export default function Dashboard() {
                 <p className="text-xs text-subtext0" style={{ color: 'var(--subtext0)' }}>/posts/{post.slug}</p>
               </div>
               <div className="flex gap-3">
-                <a href={`/admin/editor?edit=${post.slug}`} className="p-2 text-blue hover:bg-blue/10 rounded transition-colors" title="Edit">
+                <a href={`/admin/editor?edit=${encodeURIComponent(post.slug)}`} className="p-2 text-blue hover:bg-blue/10 rounded transition-colors" title="Edit">
                   <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M17 3a2.85 2.83 0 1 1 4 4L7.5 20.5 2 22l1.5-5.5Z"/><path d="m15 5 4 4"/></svg>
                 </a>
                 <button onClick={() => handleDelete(post.slug)} className="p-2 text-red hover:bg-red/10 rounded transition-colors" title="Delete">

frontend/src/components/react/admin/Editor.tsx

@@ -218,7 +218,7 @@ export default function Editor({ editSlug }: Props) {
       .map(t => t.trim())
       .filter(Boolean);
     try {
-      await savePost({
+      const saved = await savePost({
         slug,
         old_slug: originalSlug || null,
         date,
@@ -228,7 +228,8 @@ export default function Editor({ editSlug }: Props) {
         content,
       });
       showAlertMsg('Post saved!', 'success');
-      setOriginalSlug(slug);
+      if (saved?.slug && saved.slug !== slug) setSlug(saved.slug);
+      setOriginalSlug(saved?.slug ?? slug);
     } catch (e) {
       showAlertMsg(e instanceof ApiError ? `Error: ${e.message}` : 'Failed to connect to server.', 'error');
     }
@@ -274,7 +275,7 @@ export default function Editor({ editSlug }: Props) {
         </button>
         {originalSlug && (
           <a
-            href={`/posts/${originalSlug}`}
+            href={`/posts/${encodeURIComponent(originalSlug)}`}
             target="_blank"
             rel="noreferrer"
             className="bg-blue text-crust font-bold py-3 px-8 rounded-lg hover:bg-sky transition-all transform hover:scale-105 whitespace-nowrap inline-flex items-center justify-center gap-2"