Apply new frontend theme

Full style rewrite (holographic/chrome dark theme) plus matching favicon,
authored externally and dropped in at /home/andrew/alembic-theme. Verified
every template's variable names, form field names, and action URLs match
the actual data each router passes before importing -- all matched exactly
with zero router/service changes needed. Validated all templates parse
(Jinja2 env.get_template over the full tree) and confirmed the live
container serves the new theme after rebuild+redeploy.

app/templates/import/index.html

@@ -1,45 +1,63 @@
 {% extends "base.html" %}
 {% block title %}Import — alembic{% endblock %}
 {% block content %}
-<h1>Manual import</h1>
+<div class="page-header">
+  <div>
+    <h1>Manual import</h1>
+    <p class="subtitle muted">Drop files into <span class="mono">import-me/</span> and run them through the pipeline.</p>
+  </div>
+</div>
 
 {% if request.query_params.get('run_id') %}
-<p>Import job started (run id {{ request.query_params.get('run_id') }}). Check the Jobs page for progress.</p>
+<div class="notice success">Import job started (run id {{ request.query_params.get('run_id') }}). Check the Jobs page for progress.</div>
 {% endif %}
 
 <h2>Upload a file into import-me/</h2>
-<form method="post" action="/import/upload" enctype="multipart/form-data">
-  <input type="file" name="file" required>
-  <button type="submit">Upload</button>
-</form>
+<div class="panel" style="max-width:560px;">
+  <form method="post" action="/import/upload" enctype="multipart/form-data">
+    <div class="field wide">
+      <input type="file" name="file" required>
+    </div>
+    <button type="submit" class="btn">Upload</button>
+  </form>
+</div>
 
 <h2>Contents of import-me/</h2>
-<ul>
+{% if contents %}
+<ul class="chip-list">
   {% for name in contents %}
   <li>{{ name }}</li>
-  {% else %}
-  <li class="muted">(empty)</li>
   {% endfor %}
 </ul>
+{% else %}
+<p class="muted">(empty)</p>
+{% endif %}
 
 <h2>Run import</h2>
-<form method="post" action="/import/run">
-  <label for="source">File/subdir (blank = import everything above)</label>
-  <input type="text" id="source" name="source" list="import-contents">
-  <datalist id="import-contents">
-    {% for name in contents %}
-    <option value="{{ name }}">
-    {% endfor %}
-  </datalist>
+<div class="panel" style="max-width:560px;">
+  <form method="post" action="/import/run">
+    <div class="field">
+      <label for="source">File/subdir</label>
+      <input type="text" id="source" name="source" list="import-contents">
+      <span class="hint">Blank = import everything above.</span>
+      <datalist id="import-contents">
+        {% for name in contents %}
+        <option value="{{ name }}">
+        {% endfor %}
+      </datalist>
+    </div>
 
-  <label for="playlist_name">Playlist tag (optional)</label>
-  <select id="playlist_name" name="playlist_name">
-    <option value="">(none)</option>
-    {% for p in playlists %}
-    <option value="{{ p.name }}">{{ p.name }}</option>
-    {% endfor %}
-  </select>
+    <div class="field">
+      <label for="playlist_name">Playlist tag (optional)</label>
+      <select id="playlist_name" name="playlist_name">
+        <option value="">(none)</option>
+        {% for p in playlists %}
+        <option value="{{ p.name }}">{{ p.name }}</option>
+        {% endfor %}
+      </select>
+    </div>
 
-  <button type="submit">Import</button>
-</form>
+    <button type="submit" class="btn btn-primary">Import</button>
+  </form>
+</div>
 {% endblock %}