Add full SkinsPins application

- FastAPI + SQLite + Alpine.js + HTMX PWA for Bingo Bango Bongo golf scoring
- Passwordless magic link auth with email (aiosmtplib) and admin invite system
- Real-time score entry via WebSocket with drag-and-drop player ordering
- Course management with per-hole par and stroke index
- Scorecard with golf score markers (birdie, eagle, bogey, etc.)
- Two-step new game form with tee selection per player
- Dashboard with stats, live games social stream, and recent game history
- Game summary view (read-only scorecard with leaderboard)
- User profile pages with win stats
- PWA install support with generated PNG icons
- Admin panel for users, courses, games, and invitations

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

app/templates/admin/courses.html

@@ -0,0 +1,56 @@
+{% extends "base.html" %}
+{% block title %}Courses – Skins & Pins{% endblock %}
+
+{% block content %}
+<div class="page">
+  <div class="page-header">
+    <h1>⚙️ Admin</h1>
+  </div>
+
+  <div class="admin-subnav">
+    <a href="/admin" class="admin-subnav-item">Users</a>
+    <a href="/admin/courses" class="admin-subnav-item active">Courses</a>
+    <a href="/admin/games" class="admin-subnav-item">Games</a>
+  </div>
+
+  {% if request.query_params.get('success') %}
+  <div class="alert alert-success">{{ request.query_params.get('success') }}</div>
+  {% endif %}
+
+  <div style="display:flex; justify-content:flex-end; margin-bottom:1rem;">
+    <a href="/admin/courses/new" class="btn btn-primary" style="width:auto; padding:0.5rem 1rem;">+ New course</a>
+  </div>
+
+  {% if courses %}
+  <div class="card" style="padding:0;">
+    <table class="data-table" style="margin:0;">
+      <thead>
+        <tr><th>Course</th><th>Holes</th><th>Location</th><th></th></tr>
+      </thead>
+      <tbody>
+        {% for c in courses %}
+        <tr>
+          <td style="font-weight:500;">{{ c.name }}</td>
+          <td style="color:var(--text-muted);">{{ c.holes }}</td>
+          <td style="color:var(--text-muted);">{{ c.location or '—' }}</td>
+          <td style="white-space:nowrap;">
+            <a href="/admin/courses/{{ c.id }}/edit" class="btn-table-action">Edit</a>
+            <form method="post" action="/admin/courses/{{ c.id }}/delete" style="display:inline;"
+                  onsubmit="return confirm('Delete {{ c.name }}? This cannot be undone.')">
+              <button type="submit" class="btn-table-action danger">Delete</button>
+            </form>
+          </td>
+        </tr>
+        {% endfor %}
+      </tbody>
+    </table>
+  </div>
+  {% else %}
+  <div class="empty-state">
+    <div class="empty-icon">⛳</div>
+    <p>No courses yet.</p>
+    <a href="/admin/courses/new" class="btn btn-primary" style="margin-top:1rem; max-width:200px;">Add a course</a>
+  </div>
+  {% endif %}
+</div>
+{% endblock %}