Restructure app to use LotusGuild Terminal Design System v1.2

Replace custom phosphor-green terminal aesthetic with the lt-* component
system from base.css/base.js. All templates now inherit the LotusGuild
multi-accent Anduril palette via variable aliases in style.css, and use
lt-header, lt-nav, lt-card, lt-table, lt-btn, lt-modal, lt-badge etc.
Custom components (topology, inspector chassis, link debug, SFP panels)
are preserved with color values updated to base.css palette variables.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

templates/inspector.html

@@ -3,9 +3,9 @@
 
 {% block content %}
 
-<div class="page-header">
-  <h1 class="page-title">Network Inspector</h1>
-  <p class="page-sub">
+<div class="g-page-header">
+  <h1 class="g-page-title">Network Inspector</h1>
+  <p class="g-page-sub">
     Visual switch chassis diagrams. Click a port to see detailed stats and LLDP path debug.
     <span id="inspector-updated" style="margin-left:10px; color:var(--text-muted); font-size:.85em;"></span>
   </p>