Feature: HTMX + Jinja2 Frontend ersetzt Next.js komplett

- Kein Node.js, kein npm, kein Build-Schritt mehr
- HTMX 2.0.4 + PicoCSS 2 vendored in backend/static/
- Jinja2 Templates für alle 9 Seiten (Dashboard, ZFS, Snapshots,
  Shares, Identities, Logs, Services, Navigator, Login)
- HTMX Fragments für Live-Updates (30s Polling Dashboard)
- JWT als httpOnly Cookie statt localStorage
- Disk Usage zeigt TB/PB korrekt (Jinja2 serverseitig formatiert)
- Update-safe: nur Python-Deps, keine npm-Abhängigkeiten

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

backend/templates/fragments/samba_config.html

@@ -0,0 +1,40 @@
+{% set fruit_keys = ['fruit:encoding','fruit:metadata','fruit:zero_file_id','fruit:nfs_aces'] %}
+{% set has_macos = params | selectattr('key', 'in', fruit_keys) | list | length == 4 %}
+
+<h3>Samba Global Config</h3>
+
+<!-- MacOS Toggle -->
+<article style="margin-bottom:1rem">
+  <div style="display:flex;align-items:center;justify-content:space-between">
+    <div>
+      <strong>MacOS Shares (Fruit)</strong>
+      <p style="margin:0;font-size:0.85rem;color:var(--pico-muted-color)">Optimiert alle Shares für macOS (fruit, catia, streams_xattr)</p>
+    </div>
+    <button class="{% if has_macos %}outline secondary{% else %}outline{% endif %}"
+            hx-post="/fragments/samba-config/toggle-macos?enable={{ 'false' if has_macos else 'true' }}"
+            hx-target="#samba-config"
+            hx-swap="innerHTML">
+      {% if has_macos %}MacOS deaktivieren{% else %}MacOS aktivieren{% endif %}
+    </button>
+  </div>
+  {% if has_macos %}
+  <div style="margin-top:0.5rem">
+    {% for p in params if p.key in fruit_keys %}
+    <span class="badge badge-blue" style="margin:0.1rem">{{ p.key }} = {{ p.value }}</span>
+    {% endfor %}
+  </div>
+  {% endif %}
+</article>
+
+<!-- Parameter Tabelle -->
+<table>
+  <thead><tr><th>Parameter</th><th>Wert</th></tr></thead>
+  <tbody>
+  {% for p in params %}
+  <tr>
+    <td style="font-family:monospace;font-size:0.85rem">{{ p.key }}</td>
+    <td style="font-size:0.85rem;word-break:break-all">{{ p.value }}</td>
+  </tr>
+  {% endfor %}
+  </tbody>
+</table>