chore: cursor-blink on empty-state placeholders

Adds the cursor-blink class to "no X" / "select a Y" placeholders across
core (calendar popup, board preview, search preview, detail split, notifs)
and plugins (chat, email, gitea, slideshow). Visual consistency with the
rest of the pixel-font UI.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

public/plugins/chat/chat.html

@@ -14,7 +14,7 @@
         <div id="chat-list" class="chat-list"></div>
         <div id="chat-empty" class="hidden chat-empty">
             <i class="ph ph-chats text-2xl text-t-dim mb-2"></i>
-            <p class="font-pixel text-[10px] text-t-dim">no conversations yet</p>
+            <p class="font-pixel text-[10px] text-t-dim cursor-blink">no conversations yet</p>
             <button id="chat-empty-start" class="mt-3 px-2 py-1 text-[10px] font-pixel border border-t-accent text-t-accent hover:bg-t-accent/10 transition-colors">Start chat</button>
         </div>
     </div>

public/plugins/chat/chat.js

@@ -307,7 +307,7 @@ async function openPickView() {
     const self = recipientCache.self;
     const others = tenants.filter(t => t.username !== self);
     if (!others.length) {
-        list.innerHTML = '<div class="px-3 py-3 text-[10px] text-t-dim font-pixel">no other users on the relay</div>';
+        list.innerHTML = '<div class="px-3 py-3 text-[10px] text-t-dim font-pixel cursor-blink">no other users on the relay</div>';
         return;
     }
     list.innerHTML = others.map(t => `

public/plugins/email/email.html

@@ -79,7 +79,7 @@
                 <div id="email-body-empty" class="flex items-center justify-center flex-1 text-t-dim text-xs font-pixel">
                     <div class="text-center">
                         <i class="ph ph-envelope-open text-3xl mb-2 block"></i>
-                        select a message
+                        <span class="cursor-blink">select a message</span>
                     </div>
                 </div>
                 <div id="email-body" class="hidden flex flex-col flex-1 min-h-0">

public/plugins/email/email.js

@@ -441,7 +441,7 @@ function gotoNextPage() {
 function renderMessageList() {
     const list = $('email-list');
     if (!currentMessages.length) {
-        list.innerHTML = '<div class="p-4 text-xs text-t-dim italic">no messages</div>';
+        list.innerHTML = '<div class="p-4 text-xs text-t-dim italic cursor-blink">no messages</div>';
         renderSelectionBar();
         renderSpamToolbar();
         return;

public/plugins/gitea/gitea.html

@@ -73,7 +73,7 @@
                 <div id="gitea-detail-empty" class="flex items-center justify-center flex-1 text-t-dim text-xs font-pixel">
                     <div class="text-center">
                         <i class="ph ph-list-bullets text-3xl mb-2 block"></i>
-                        select an issue
+                        <span class="cursor-blink">select an issue</span>
                     </div>
                 </div>
                 <!-- ── Create issue form ── -->

public/plugins/slideshow/slideshow.js

@@ -640,7 +640,7 @@ async function refreshGalleryPicker() {
     if (!images.length) {
         gp.grid.innerHTML = `<div class="col-span-full text-center py-16" style="grid-column:1/-1;">
             <i class="ph ph-image text-4xl text-t-dim mb-2 block"></i>
-            <p class="font-pixel text-[10px] text-t-dim">no images yet — upload above</p>
+            <p class="font-pixel text-[10px] text-t-dim cursor-blink">no images yet — upload above</p>
         </div>`;
         return;
     }
@@ -705,7 +705,7 @@ function renderPickerList(query) {
     picker.list.innerHTML = filtered.map(c => {
         const col = c.color ? `background:${c.color};` : '';
         return `<button class="slideshow-pick-row" data-pick-target="card:${escHtml(c.id)}"><span style="display:inline-block;width:8px;height:8px;${col}"></span><span style="flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${escHtml(c.title || '(untitled)')}</span></button>`;
-    }).join('') || `<div class="font-pixel text-[10px] text-t-dim px-2 py-2">no matches</div>`;
+    }).join('') || `<div class="font-pixel text-[10px] text-t-dim px-2 py-2 cursor-blink">no matches</div>`;
 }
 
 picker.search?.addEventListener('input', () => renderPickerList(picker.search.value));