fix Nomad icon fa-hat-cowboy → fa-hat-cowboy-side; setup_sea_session command

- migration 0011 ICONS dict corrected for fresh installs
- migration 0013 data fix for existing DBs (filters on old value to be safe)
- TarotCardSuitIconTest updated to assert fa-hat-cowboy-side
- setup_sea_session: single-gamer PICK SEA dev session w. pre-auth URL

Code architected by Disco DeDisco <discodedisco@outlook.com>
Git commit message Co-Authored-By:
Claude Sonnet 4.6 <noreply@anthropic.com>

src/apps/epic/tests/unit/test_models.py

@@ -51,7 +51,7 @@ class TarotCardSuitIconTest(SimpleTestCase):
     """TarotCard.suit_icon — icon class resolution."""
 
     def test_major_with_icon_returns_icon(self):
-        self.assertEqual(_card('MAJOR', 0, icon='fa-hat-cowboy').suit_icon, 'fa-hat-cowboy')
+        self.assertEqual(_card('MAJOR', 0, icon='fa-hat-cowboy-side').suit_icon, 'fa-hat-cowboy-side')
 
     def test_major_without_icon_returns_empty(self):
         self.assertEqual(_card('MAJOR', 5).suit_icon, '')