chore: rebrand ClubManager -> RosterChief, add lucide icons

The clubmanager.app domain was taken, so the platform is now RosterChief
(rosterchief.app). Renames the Django project package clubmanager/ ->
rosterchief/ (git tracks it as a move, so history follows), every
`from rosterchief.base import ...`, the settings/wsgi/asgi module paths,
env vars (ROSTERCHIEF_BASE_DOMAIN / ROSTERCHIEF_RP_NAME), the MFA adapter
(RosterChiefMFAAdapter), brand text, and the docs.

Two things were deliberately NOT swept:
- club.models.ClubManager stays: it is the Django manager *for Club*, not the
  brand. A blind rename would have silently broken it.
- Migrations are untouched (history is not rewritten). The only reference was a
  cosmetic help_text, so a normal AlterField migration carries the new domain.

Note the WebAuthn RP ID is the base domain, so moving to rosterchief.app
cryptographically invalidates any passkey enrolled under the old one; they
cannot be migrated and must be re-enrolled. Nothing is in production, so the
real cost is zero.

Add django-lucide (from bsiebens/lucide) for icons: the theme toggle now swaps
sun/moon against the effective theme, and the control panel gets icons on its
tabs, actions and stat groups. Its classifiers stop at Django 5.0, but that is
stale metadata — verified rendering on Django 6 / Python 3.14.

Also add formbuilder, shop and controlpanel to ruff's known-first-party list,
which had drifted behind the apps that landed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

controlpanel/templates/controlpanel/base.html

@@ -1,7 +1,8 @@
 {% extends "base.html" %}
+{% load lucide %}
 
 {% block title %}
-    {% block panel_title %}Control panel{% endblock panel_title %} · ClubManager
+    {% block panel_title %}Control panel{% endblock panel_title %} · RosterChief
 {% endblock title %}
 
 {% block main %}
@@ -17,8 +18,8 @@
         </div>
     </div>
     <div role="tablist" class="tabs-boxed tabs mb-6 w-fit">
-        <a role="tab" href="{% url 'controlpanel:dashboard' %}" class="tab {% if nav == 'dashboard' %}tab-active{% endif %}">Dashboard</a>
-        <a role="tab" href="{% url 'controlpanel:club_list' %}" class="tab {% if nav == 'clubs' %}tab-active{% endif %}">Clubs</a>
+        <a role="tab" href="{% url 'controlpanel:dashboard' %}" class="tab gap-2 {% if nav == 'dashboard' %}tab-active{% endif %}">{% lucide "layout-dashboard" size=16 %} Dashboard</a>
+        <a role="tab" href="{% url 'controlpanel:club_list' %}" class="tab gap-2 {% if nav == 'clubs' %}tab-active{% endif %}">{% lucide "building-2" size=16 %} Clubs</a>
     </div>
     {% block panel %}{% endblock panel %}
 {% endblock main %}

controlpanel/templates/controlpanel/club_detail.html

@@ -1,4 +1,5 @@
 {% extends "controlpanel/base.html" %}
+{% load lucide %}
 
 {% block heading %}{{ club.name }}{% endblock heading %}
 
@@ -12,16 +13,16 @@
 {% endblock subheading %}
 
 {% block actions %}
-    <a class="btn btn-ghost" href="{% url 'controlpanel:club_update' club.pk %}">Edit</a>
+    <a class="btn btn-ghost gap-2" href="{% url 'controlpanel:club_update' club.pk %}">{% lucide "pencil" size=16 %} Edit</a>
     {% if club.is_archived %}
         <form method="post" action="{% url 'controlpanel:club_restore' club.pk %}">
             {% csrf_token %}
-            <button class="btn btn-success" type="submit">Restore</button>
+            <button class="btn btn-success gap-2" type="submit">{% lucide "archive-restore" size=16 %} Restore</button>
         </form>
     {% else %}
         <form method="post" action="{% url 'controlpanel:club_archive' club.pk %}">
             {% csrf_token %}
-            <button class="btn btn-warning" type="submit">Archive</button>
+            <button class="btn btn-warning gap-2" type="submit">{% lucide "archive" size=16 %} Archive</button>
         </form>
     {% endif %}
 {% endblock actions %}
@@ -36,7 +37,7 @@
         {% for group in groups %}
             <div class="card bg-base-100 shadow">
                 <div class="card-body">
-                    <h2 class="card-title text-base">{{ group.title }}</h2>
+                    <h2 class="card-title text-base">{% lucide group.icon size=18 %} {{ group.title }}</h2>
                     <dl class="divide-y divide-base-200">
                         {% for label, value in group.stats %}
                             <div class="flex items-center justify-between py-2">
@@ -53,7 +54,7 @@
         <div class="card-body">
             <div class="flex items-center justify-between">
                 <h2 class="card-title text-base">Club admins</h2>
-                <a class="btn btn-primary btn-sm" href="{% url 'controlpanel:club_admin_add' club.pk %}">Add admin</a>
+                <a class="btn btn-primary btn-sm gap-2" href="{% url 'controlpanel:club_admin_add' club.pk %}">{% lucide "user-plus" size=16 %} Add admin</a>
             </div>
             <div class="overflow-x-auto">
                 <table class="table">
@@ -72,7 +73,7 @@
                                 <td class="text-right">
                                     <form method="post" action="{% url 'controlpanel:club_admin_remove' club.pk role.pk %}">
                                         {% csrf_token %}
-                                        <button class="btn btn-ghost btn-xs text-error" type="submit">Remove</button>
+                                        <button class="btn btn-ghost btn-xs gap-1 text-error" type="submit">{% lucide "trash-2" size=14 %} Remove</button>
                                     </form>
                                 </td>
                             </tr>

controlpanel/templates/controlpanel/club_list.html

@@ -1,4 +1,5 @@
 {% extends "controlpanel/base.html" %}
+{% load lucide %}
 
 {% block heading %}{% if show_archived %}Archived clubs{% else %}Clubs{% endif %}{% endblock heading %}
 
@@ -8,7 +9,7 @@
     {% else %}
         <a class="btn btn-ghost" href="{% url 'controlpanel:club_list' %}?archived=1">Archived</a>
     {% endif %}
-    <a class="btn btn-primary" href="{% url 'controlpanel:club_create' %}">New club</a>
+    <a class="btn btn-primary gap-2" href="{% url 'controlpanel:club_create' %}">{% lucide "plus" size=16 %} New club</a>
 {% endblock actions %}
 
 {% block panel %}
@@ -19,7 +20,7 @@
                value="{{ search }}"
                placeholder="Search clubs…"
                class="input input-bordered w-full max-w-xs">
-        <button class="btn" type="submit">Search</button>
+        <button class="btn gap-2" type="submit">{% lucide "search" size=16 %} Search</button>
     </form>
     <div class="card bg-base-100 shadow">
         <div class="card-body">

controlpanel/templates/controlpanel/dashboard.html

@@ -1,9 +1,10 @@
 {% extends "controlpanel/base.html" %}
+{% load lucide %}
 
 {% block heading %}Platform overview{% endblock heading %}
 
 {% block actions %}
-    <a class="btn btn-primary" href="{% url 'controlpanel:club_create' %}">New club</a>
+    <a class="btn btn-primary gap-2" href="{% url 'controlpanel:club_create' %}">{% lucide "plus" size=16 %} New club</a>
 {% endblock actions %}
 
 {% block panel %}