feat(admin): live search with loading indicator on all admin filter forms

Scenarios:
- Convert from plain GET form to HTMX live search (scenario_results
  route already existed, just needed wiring)
- Replace Filter submit button with JS-reset Clear button
- Update is_generating banner to match article_results.html style

Users:
- Add /admin/users/results HTMX partial route
- Extract user table into partials/user_results.html with HTMX pagination
- Convert search form to live-search (input delay:300ms)

Loading indicator (all 6 forms):
- Add hx-indicator pointing to a small arc spinner SVG
- Spinner fades in while the debounce + request is in flight
- CSS .search-spinner class in input.css (opacity 0 → 1 on htmx-request,
  spin-icon animation only runs when visible)

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

web/src/padelnomics/admin/routes.py

@@ -263,6 +263,23 @@ async def users():
     )
 
 
+@bp.route("/users/results")
+@role_required("admin")
+async def user_results():
+    """HTMX partial for user list (live search)."""
+    search = request.args.get("search", "").strip()
+    page = int(request.args.get("page", 1))
+    per_page = 50
+    offset = (page - 1) * per_page
+    user_list = await get_users(limit=per_page, offset=offset, search=search or None)
+    return await render_template(
+        "admin/partials/user_results.html",
+        users=user_list,
+        search=search,
+        page=page,
+    )
+
+
 @bp.route("/users/<int:user_id>")
 @role_required("admin")
 async def user_detail(user_id: int):

web/src/padelnomics/admin/templates/admin/articles.html

@@ -28,7 +28,8 @@
     <form class="flex flex-wrap gap-3 items-end"
           hx-get="{{ url_for('admin.article_results') }}"
           hx-target="#article-results"
-          hx-trigger="change, input delay:300ms from:find input">
+          hx-trigger="change, input delay:300ms from:find input"
+          hx-indicator="#articles-loading">
       <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
 
       <div>
@@ -65,6 +66,11 @@
           <option value="de" {% if current_language == 'de' %}selected{% endif %}>DE</option>
         </select>
       </div>
+
+      <svg id="articles-loading" class="search-spinner" width="14" height="14" viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <circle cx="12" cy="12" r="10" stroke="#CBD5E1" stroke-width="3"/>
+        <path d="M12 2a10 10 0 0 1 10 10" stroke="#0EA5E9" stroke-width="3" stroke-linecap="round"/>
+      </svg>
     </form>
   </div>
 

web/src/padelnomics/admin/templates/admin/emails.html

@@ -24,7 +24,8 @@
     <form class="flex flex-wrap gap-3 items-end"
           hx-get="{{ url_for('admin.email_results') }}"
           hx-target="#email-results"
-          hx-trigger="change, input delay:300ms from:find input">
+          hx-trigger="change, input delay:300ms from:find input"
+          hx-indicator="#emails-loading">
       <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
 
       <div>
@@ -51,6 +52,11 @@
         <label class="text-xs font-semibold text-slate block mb-1">Search</label>
         <input type="text" name="search" value="{{ current_search }}" class="form-input" placeholder="Email or subject..." style="min-width:180px">
       </div>
+
+      <svg id="emails-loading" class="search-spinner" width="14" height="14" viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <circle cx="12" cy="12" r="10" stroke="#CBD5E1" stroke-width="3"/>
+        <path d="M12 2a10 10 0 0 1 10 10" stroke="#0EA5E9" stroke-width="3" stroke-linecap="round"/>
+      </svg>
     </form>
   </div>
 

web/src/padelnomics/admin/templates/admin/leads.html

@@ -25,7 +25,8 @@
     <form class="flex flex-wrap gap-3 items-end"
           hx-get="{{ url_for('admin.lead_results') }}"
           hx-target="#lead-results"
-          hx-trigger="change, input delay:300ms from:find input">
+          hx-trigger="change, input delay:300ms from:find input"
+          hx-indicator="#leads-loading">
       <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
 
       <div>
@@ -57,6 +58,11 @@
           {% endfor %}
         </select>
       </div>
+
+      <svg id="leads-loading" class="search-spinner" width="14" height="14" viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <circle cx="12" cy="12" r="10" stroke="#CBD5E1" stroke-width="3"/>
+        <path d="M12 2a10 10 0 0 1 10 10" stroke="#0EA5E9" stroke-width="3" stroke-linecap="round"/>
+      </svg>
     </form>
   </div>
 

web/src/padelnomics/admin/templates/admin/partials/scenario_results.html

@@ -1,9 +1,15 @@
 {% if is_generating %}
-<div hx-get="{{ url_for('admin.scenario_results') }}"
+<div class="generating-banner"
+     hx-get="{{ url_for('admin.scenario_results') }}"
      hx-trigger="every 3s"
      hx-target="#scenario-results"
-     hx-swap="innerHTML"
-     style="display:none" aria-hidden="true"></div>
+     hx-swap="innerHTML">
+  <svg class="spinner-icon" width="16" height="16" viewBox="0 0 24 24" fill="none">
+    <circle cx="12" cy="12" r="10" stroke="#CBD5E1" stroke-width="3"/>
+    <path d="M12 2a10 10 0 0 1 10 10" stroke="#0EA5E9" stroke-width="3" stroke-linecap="round"/>
+  </svg>
+  <span>Generating scenarios…</span>
+</div>
 {% endif %}
 {% if scenarios %}
 <table class="table">

web/src/padelnomics/admin/templates/admin/partials/user_results.html

@@ -0,0 +1,60 @@
+<div class="card">
+  {% if users %}
+  <div class="overflow-x-auto">
+    <table class="table">
+      <thead>
+        <tr>
+          <th>ID</th>
+          <th>Email</th>
+          <th>Name</th>
+          <th>Plan</th>
+          <th>Joined</th>
+          <th>Last Login</th>
+          <th></th>
+        </tr>
+      </thead>
+      <tbody>
+        {% for u in users %}
+        <tr data-href="{{ url_for('admin.user_detail', user_id=u.id) }}">
+          <td class="mono text-sm">{{ u.id }}</td>
+          <td><a href="{{ url_for('admin.user_detail', user_id=u.id) }}">{{ u.email }}</a></td>
+          <td>{{ u.name or '-' }}</td>
+          <td>
+            {% if u.plan %}
+            <span class="badge">{{ u.plan }}</span>
+            {% else %}
+            <span class="text-sm text-slate">free</span>
+            {% endif %}
+          </td>
+          <td class="mono text-sm">{{ u.created_at[:10] }}</td>
+          <td class="mono text-sm">{{ u.last_login_at[:10] if u.last_login_at else 'Never' }}</td>
+          <td>
+            <form method="post" action="{{ url_for('admin.impersonate', user_id=u.id) }}" class="m-0">
+              <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
+              <button type="submit" class="btn-outline btn-sm">Impersonate</button>
+            </form>
+          </td>
+        </tr>
+        {% endfor %}
+      </tbody>
+    </table>
+  </div>
+  <div class="flex gap-4 justify-center mt-4 mb-2 text-sm">
+    {% if page > 1 %}
+    <button class="btn-outline btn-sm"
+            hx-get="{{ url_for('admin.user_results') }}?page={{ page - 1 }}{% if search %}&search={{ search }}{% endif %}"
+            hx-target="#user-results"
+            hx-swap="innerHTML">&larr; Previous</button>
+    {% endif %}
+    <span class="text-slate self-center">Page {{ page }}</span>
+    {% if users | length == 50 %}
+    <button class="btn-outline btn-sm"
+            hx-get="{{ url_for('admin.user_results') }}?page={{ page + 1 }}{% if search %}&search={{ search }}{% endif %}"
+            hx-target="#user-results"
+            hx-swap="innerHTML">Next &rarr;</button>
+    {% endif %}
+  </div>
+  {% else %}
+  <p class="text-slate text-sm" style="padding:1.5rem 1rem">No users found.</p>
+  {% endif %}
+</div>

web/src/padelnomics/admin/templates/admin/scenarios.html

@@ -17,13 +17,19 @@
     </div>
   </header>
 
-  <form method="get" class="card mb-4 flex flex-wrap gap-3 items-end">
+  <form class="card mb-4 flex flex-wrap gap-3 items-end"
+        hx-get="{{ url_for('admin.scenario_results') }}"
+        hx-target="#scenario-results"
+        hx-trigger="change, input delay:300ms from:find input"
+        hx-indicator="#scenario-loading">
+
     <div class="flex-1 min-w-48">
       <label class="block text-sm text-slate mb-1">Search</label>
       <input type="text" name="search" value="{{ current_search }}"
              placeholder="Title, location, slug…"
              class="form-input w-full">
     </div>
+
     <div>
       <label class="block text-sm text-slate mb-1">Country</label>
       <select name="country" class="form-input">
@@ -33,6 +39,7 @@
         {% endfor %}
       </select>
     </div>
+
     <div>
       <label class="block text-sm text-slate mb-1">Venue type</label>
       <select name="venue_type" class="form-input">
@@ -42,11 +49,14 @@
         {% endfor %}
       </select>
     </div>
-    <div class="flex gap-2">
-      <button type="submit" class="btn">Filter</button>
-      {% if current_search or current_country or current_venue_type %}
-      <a href="{{ url_for('admin.scenarios') }}" class="btn-outline">Clear</a>
-      {% endif %}
+
+    <div class="flex gap-2 items-center">
+      <button type="button" class="btn-outline"
+              onclick="this.closest('form').reset(); htmx.trigger(this.closest('form'), 'change')">Clear</button>
+      <svg id="scenario-loading" class="search-spinner" width="14" height="14" viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <circle cx="12" cy="12" r="10" stroke="#CBD5E1" stroke-width="3"/>
+        <path d="M12 2a10 10 0 0 1 10 10" stroke="#0EA5E9" stroke-width="3" stroke-linecap="round"/>
+      </svg>
     </div>
   </form>
 

web/src/padelnomics/admin/templates/admin/suppliers.html

@@ -24,7 +24,8 @@
     <form class="flex flex-wrap gap-3 items-end"
           hx-get="{{ url_for('admin.supplier_results') }}"
           hx-target="#supplier-results"
-          hx-trigger="change, input delay:300ms from:find input">
+          hx-trigger="change, input delay:300ms from:find input"
+          hx-indicator="#suppliers-loading">
       <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
 
       <div>
@@ -52,6 +53,11 @@
           {% endfor %}
         </select>
       </div>
+
+      <svg id="suppliers-loading" class="search-spinner" width="14" height="14" viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <circle cx="12" cy="12" r="10" stroke="#CBD5E1" stroke-width="3"/>
+        <path d="M12 2a10 10 0 0 1 10 10" stroke="#0EA5E9" stroke-width="3" stroke-linecap="round"/>
+      </svg>
     </form>
   </div>
 

web/src/padelnomics/admin/templates/admin/users.html

@@ -9,69 +9,24 @@
     <a href="{{ url_for('admin.index') }}" class="btn-outline btn-sm">&larr; Dashboard</a>
   </header>
 
-  <!-- Search -->
-  <form method="get" class="mb-8">
-    <div class="flex gap-3 max-w-md">
-      <input type="search" name="search" class="form-input" placeholder="Search by email..." value="{{ search }}">
-      <button type="submit" class="btn">Search</button>
-    </div>
-  </form>
+  <div class="card mb-6" style="padding:1rem 1.25rem">
+    <form class="flex gap-3 items-center"
+          hx-get="{{ url_for('admin.user_results') }}"
+          hx-target="#user-results"
+          hx-trigger="input delay:300ms from:find input"
+          hx-indicator="#user-loading">
+      <div class="flex-1 max-w-sm">
+        <input type="search" name="search" class="form-input w-full"
+               placeholder="Search by email…" value="{{ search }}">
+      </div>
+      <svg id="user-loading" class="search-spinner" width="14" height="14" viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <circle cx="12" cy="12" r="10" stroke="#CBD5E1" stroke-width="3"/>
+        <path d="M12 2a10 10 0 0 1 10 10" stroke="#0EA5E9" stroke-width="3" stroke-linecap="round"/>
+      </svg>
+    </form>
+  </div>
 
-  <!-- User Table -->
-  <div class="card">
-    {% if users %}
-    <div class="overflow-x-auto">
-      <table class="table">
-        <thead>
-          <tr>
-            <th>ID</th>
-            <th>Email</th>
-            <th>Name</th>
-            <th>Plan</th>
-            <th>Joined</th>
-            <th>Last Login</th>
-            <th></th>
-          </tr>
-        </thead>
-        <tbody>
-          {% for u in users %}
-          <tr data-href="{{ url_for('admin.user_detail', user_id=u.id) }}">
-            <td class="mono text-sm">{{ u.id }}</td>
-            <td><a href="{{ url_for('admin.user_detail', user_id=u.id) }}">{{ u.email }}</a></td>
-            <td>{{ u.name or '-' }}</td>
-            <td>
-              {% if u.plan %}
-              <span class="badge">{{ u.plan }}</span>
-              {% else %}
-              <span class="text-sm text-slate">free</span>
-              {% endif %}
-            </td>
-            <td class="mono text-sm">{{ u.created_at[:10] }}</td>
-            <td class="mono text-sm">{{ u.last_login_at[:10] if u.last_login_at else 'Never' }}</td>
-            <td>
-              <form method="post" action="{{ url_for('admin.impersonate', user_id=u.id) }}" class="m-0">
-                <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
-                <button type="submit" class="btn-outline btn-sm">Impersonate</button>
-              </form>
-            </td>
-          </tr>
-          {% endfor %}
-        </tbody>
-      </table>
-    </div>
-
-    <!-- Pagination -->
-    <div class="flex gap-4 justify-center mt-6 text-sm">
-      {% if page > 1 %}
-      <a href="?page={{ page - 1 }}{% if search %}&search={{ search }}{% endif %}">&larr; Previous</a>
-      {% endif %}
-      <span class="text-slate">Page {{ page }}</span>
-      {% if users | length == 50 %}
-      <a href="?page={{ page + 1 }}{% if search %}&search={{ search }}{% endif %}">Next &rarr;</a>
-      {% endif %}
-    </div>
-    {% else %}
-    <p class="text-slate text-sm">No users found.</p>
-    {% endif %}
+  <div id="user-results">
+    {% include "admin/partials/user_results.html" %}
   </div>
 {% endblock %}

web/src/padelnomics/static/css/input.css

@@ -569,6 +569,17 @@
     @apply px-4 pb-4 text-slate-dark;
   }
 
+  /* Inline HTMX loading indicator for search forms */
+  .search-spinner {
+    opacity: 0;
+    flex-shrink: 0;
+    align-self: center;
+  }
+  .search-spinner.htmx-request {
+    opacity: 1;
+    animation: spin-icon 0.9s linear infinite;
+  }
+
   /* Article generation spinner banner */
   .generating-banner {
     @apply flex items-center gap-3 rounded-xl border border-light-gray bg-white text-sm text-slate-dark mb-4;