new migrations in apps.epic for further refinements made to Pope card nomenclature

src/apps/epic/migrations/0020_rename_earthman_pope_cards_2_5.py

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+"""
+Data migration: rename Pope cards 2–5 in the Earthman deck.
+
+  2: "Pope 2: The Despot"      → "Pope 2: The Occultist"
+  3: "Pope 3: The Capitalist"  → "Pope 3: The Despot"
+  4: "Pope 4: The Fascist"     → "Pope 4: The Capitalist"
+  5: "Pope 5: The War Machine" → "Pope 5: The Fascist"
+"""
+from django.db import migrations
+
+
+NEW_NAMES = {
+    2: ("Pope 2: The Occultist", "pope-2-the-occultist"),
+    3: ("Pope 3: The Despot",    "pope-3-the-despot"),
+    4: ("Pope 4: The Capitalist","pope-4-the-capitalist"),
+    5: ("Pope 5: The Fascist",   "pope-5-the-fascist"),
+}
+
+OLD_NAMES = {
+    2: ("Pope 2: The Despot",       "pope-2-the-despot"),
+    3: ("Pope 3: The Capitalist",   "pope-3-the-capitalist"),
+    4: ("Pope 4: The Fascist",      "pope-4-the-fascist"),
+    5: ("Pope 5: The War Machine",  "pope-5-the-war-machine"),
+}
+
+
+def rename_forward(apps, schema_editor):
+    TarotCard   = apps.get_model("epic", "TarotCard")
+    DeckVariant = apps.get_model("epic", "DeckVariant")
+
+    earthman = DeckVariant.objects.filter(slug="earthman").first()
+    if not earthman:
+        return
+
+    for number, (new_name, new_slug) in NEW_NAMES.items():
+        TarotCard.objects.filter(
+            deck_variant=earthman, arcana="MAJOR", number=number
+        ).update(name=new_name, slug=new_slug)
+
+
+def rename_reverse(apps, schema_editor):
+    TarotCard   = apps.get_model("epic", "TarotCard")
+    DeckVariant = apps.get_model("epic", "DeckVariant")
+
+    earthman = DeckVariant.objects.filter(slug="earthman").first()
+    if not earthman:
+        return
+
+    for number, (old_name, old_slug) in OLD_NAMES.items():
+        TarotCard.objects.filter(
+            deck_variant=earthman, arcana="MAJOR", number=number
+        ).update(name=old_name, slug=old_slug)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("epic", "0019_rename_earthman_schiz_and_popes"),
+    ]
+
+    operations = [
+        migrations.RunPython(rename_forward, reverse_code=rename_reverse),
+    ]