Show loading progress and send num_ctx 16384 so vision chat fits.

Livebar and waiting_ollama phase while the model loads into GPU; bump context past Ollama's 4096 default that truncated Assistent packs.

Co-authored-by: Cursor <cursoragent@cursor.com>

Tabs/Text2Image/Assistent.html

@@ -25,7 +25,10 @@
         <div class="sa-splitter" id="sa_splitter" role="separator" aria-orientation="vertical" title="Drag to resize"></div>
         <section class="sa-chat-pane">
             <header class="sa-chat-header">
-                <div class="sa-chat-title">Assistent</div>
+                <div class="sa-chat-title">
+                    Assistent
+                    <span class="sa-live-dot" id="sa_live_dot" hidden></span>
+                </div>
                 <div class="sa-header-right">
                     <select id="sa_pack" class="sa-select" title="Prompt pack">
                         <option value="write_prompt">Write prompt</option>
@@ -50,8 +53,18 @@
                 <label class="sa-check"><input type="checkbox" id="sa_auto_critique" /> Auto-critique after generate</label>
                 <label class="sa-check sa-danger" title="Dangerous — downloads without Confirm"><input type="checkbox" id="sa_auto_download" /> Auto-download Civitai (off)</label>
             </div>
-            <div class="sa-messages" id="sa_messages"></div>
-            <div class="sa-composer">
+            <div class="sa-messages" id="sa_messages">
+                <div class="sa-chat-empty" id="sa_chat_empty">
+                    <div class="sa-chat-empty-title">Collaborative Krea 2</div>
+                    <div class="sa-chat-empty-hint">Write a prompt, drop a reference on the left, or send the current Generate image.</div>
+                </div>
+            </div>
+            <div class="sa-livebar" id="sa_livebar" hidden>
+                <span class="sa-spinner" aria-hidden="true"></span>
+                <span class="sa-livebar-text" id="sa_livebar_text">Working…</span>
+                <span class="sa-elapsed" id="sa_elapsed"></span>
+            </div>
+            <div class="sa-composer" id="sa_composer">
                 <textarea id="sa_input" rows="3" placeholder="Ask for a prompt, img2img, inpaint, critique… (Enter = send, Shift+Enter = newline)"></textarea>
                 <div class="sa-composer-actions">
                     <button type="button" class="basic-button sa-primary" id="sa_btn_send">Send</button>