sig-select sprint: SigReservation model + sig_reserve view (OK/NVM hold); full sig-select.js rewrite with stage preview, WS hover cursors, reservation lock (must NVM before OK-ing another card — enforced server-side 409 + JS guard); sizeSigModal() + sizeSigCard() in room.js (JS-based card sizing avoids libsass cqw/cqh limitation); stat block hidden until OK pressed; mobile touch: dismiss stage on outside-grid tap when unfocused; 17 IT + Jasmine specs

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

src/apps/epic/migrations/0022_sig_reservation.py

@@ -0,0 +1,31 @@
+# Generated by Django 6.0 on 2026-04-06 00:02
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('epic', '0021_rename_earthman_major_arcana_batch_2'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='SigReservation',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('role', models.CharField(max_length=2)),
+                ('polarity', models.CharField(choices=[('levity', 'Levity'), ('gravity', 'Gravity')], max_length=7)),
+                ('reserved_at', models.DateTimeField(auto_now_add=True)),
+                ('card', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='sig_reservations', to='epic.tarotcard')),
+                ('gamer', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='sig_reservations', to=settings.AUTH_USER_MODEL)),
+                ('room', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='sig_reservations', to='epic.room')),
+            ],
+            options={
+                'constraints': [models.UniqueConstraint(fields=('room', 'gamer'), name='one_sig_reservation_per_gamer_per_room'), models.UniqueConstraint(fields=('room', 'card', 'polarity'), name='one_reservation_per_card_per_polarity_per_room')],
+            },
+        ),
+    ]