One chat card, two modes: assistant and mesh, with a purple unread badge on the switch

Mesh is a mode rather than an AI profile — it has no model, tokens, reasoning or sources, so making it a profile would branch every profile-aware path on the one that has no model.

Plugin/unraid/include/ai_chat.php

@@ -74,6 +74,9 @@
 // so relying on something else having loaded the registry first works on the AI tab and fatals
 // on the dashboard.
 require_once __DIR__ . '/ai_profiles.php';
+// The mesh pane the chat card can switch to. Required here rather than by each page, so a page
+// that mounts a chat gets the option without having to know the store exists.
+require_once __DIR__ . '/node_chat.php';
 
 // The conversation store, on its own, with no styling and no chat widget attached.
 //
@@ -2400,7 +2403,21 @@ function vv_ai_chat_markup(string $prefix, array $o = []): void {
   <div class="vv-ai-head">
     <span class="vv-ai-head-t">
       <?php if (!empty($o['icon'])): ?><span class="vv-ico"><?= $o['icon'] ?></span><?php endif; ?>
-      <?= htmlspecialchars($o['title'] ?? 'Assistant') ?>
+      <span id="<?= $p ?>-title"><?= htmlspecialchars($o['title'] ?? 'Assistant') ?></span>
+      <?php if (!empty($o['mesh'])): ?>
+      <!-- The badge is the whole reason a toggle is acceptable here. Behind a switch, an arriving
+           message is invisible until somebody happens to flip it — and the messages this carries
+           are the ones you most need to not miss ("mine is going down for a week"). Purple because
+           nothing else on these pages is, so it reads as new rather than as another warning. -->
+      <button type="button" id="<?= $p ?>-mode" class="vv-ai-btn ghost"
+              onclick="vvNcMode()" title="Switch between the assistant and the mesh"
+              style="margin-left:8px;font-size:10px;padding:2px 8px;">
+        <span id="<?= $p ?>-mode-l">Mesh</span>
+        <span id="vv-nc-badge" hidden
+              style="margin-left:5px;background:#7c4dff;color:#fff;border-radius:8px;
+                     padding:0 6px;font-size:9px;font-weight:700;">✉ 0</span>
+      </button>
+      <?php endif; ?>
     </span>
 
     <!-- Centred by giving the title and the right-hand group equal flex, not by margins — the
@@ -2460,6 +2477,9 @@ function vv_ai_chat_markup(string $prefix, array $o = []): void {
 
   <!-- Positioned wrapper so the jump pill can sit over the transcript's bottom edge without
        being clipped by its overflow, and without taking a row of its own when hidden. -->
+  <!-- Two panes, one card. The mesh pane is a sibling of this one rather than a second card, so
+       switching what the card is does not give the page a second header to look at. -->
+  <div id="<?= $p ?>-pane-ai">
   <div class="vv-ai-chat-wrap">
     <div class="vv-ai-chat" id="<?= $p ?>-chat"<?= $style ?>>
       <div class="vv-ai-empty"><?= htmlspecialchars($empty) ?></div>
@@ -2529,6 +2549,8 @@ function vv_ai_chat_markup(string $prefix, array $o = []): void {
       </div>
     </div>
   </div>
+  </div><?php /* close -pane-ai */ ?>
+<?php if (!empty($o['mesh']) && function_exists('vv_nc_pane_markup')) vv_nc_pane_markup($p, !empty($o['meshDefault'])); ?>
 </div>
     <?php
 }