Add optional specialty type field to boss battles

Gym leaders, Elite Four, and champions can now have a Pokemon type
specialty (e.g. Rock, Water). Shown as a type image badge on boss
cards in the run view, and editable via dropdown in the admin form.
Includes migration, export, and seed pipeline support.

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

backend/src/app/alembic/versions/a6b7c8d9e0f1_add_specialty_type_to_boss_battles.py

@@ -0,0 +1,26 @@
+"""add specialty_type to boss battles
+
+Revision ID: a6b7c8d9e0f1
+Revises: f5a6b7c8d9e0
+Create Date: 2026-02-08 21:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'a6b7c8d9e0f1'
+down_revision: Union[str, Sequence[str], None] = 'f5a6b7c8d9e0'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.add_column('boss_battles', sa.Column('specialty_type', sa.String(20), nullable=True))
+
+
+def downgrade() -> None:
+    op.drop_column('boss_battles', 'specialty_type')

backend/src/app/api/export.py

@@ -138,6 +138,7 @@ async def export_game_bosses(
             {
                 "name": b.name,
                 "boss_type": b.boss_type,
+                "specialty_type": b.specialty_type,
                 "badge_name": b.badge_name,
                 "badge_image_url": b.badge_image_url,
                 "level_cap": b.level_cap,

backend/src/app/models/boss_battle.py

@@ -16,6 +16,7 @@ class BossBattle(Base):
     )
     name: Mapped[str] = mapped_column(String(100))
     boss_type: Mapped[str] = mapped_column(String(20))  # gym_leader, elite_four, champion, rival, evil_team, other
+    specialty_type: Mapped[str | None] = mapped_column(String(20), default=None)  # pokemon type specialty (e.g. rock, water)
     badge_name: Mapped[str | None] = mapped_column(String(100))
     badge_image_url: Mapped[str | None] = mapped_column(String(500))
     level_cap: Mapped[int] = mapped_column(SmallInteger)

backend/src/app/schemas/boss.py

@@ -17,6 +17,7 @@ class BossBattleResponse(CamelModel):
     version_group_id: int
     name: str
     boss_type: str
+    specialty_type: str | None
     badge_name: str | None
     badge_image_url: str | None
     level_cap: int
@@ -43,6 +44,7 @@ class BossResultResponse(CamelModel):
 class BossBattleCreate(CamelModel):
     name: str
     boss_type: str
+    specialty_type: str | None = None
     badge_name: str | None = None
     badge_image_url: str | None = None
     level_cap: int
@@ -56,6 +58,7 @@ class BossBattleCreate(CamelModel):
 class BossBattleUpdate(CamelModel):
     name: str | None = None
     boss_type: str | None = None
+    specialty_type: str | None = None
     badge_name: str | None = None
     badge_image_url: str | None = None
     level_cap: int | None = None

backend/src/app/seeds/loader.py

@@ -220,6 +220,7 @@ async def upsert_bosses(
             version_group_id=version_group_id,
             name=boss["name"],
             boss_type=boss["boss_type"],
+            specialty_type=boss.get("specialty_type"),
             badge_name=boss.get("badge_name"),
             badge_image_url=boss.get("badge_image_url"),
             level_cap=boss["level_cap"],
@@ -232,6 +233,7 @@ async def upsert_bosses(
             set_={
                 "name": boss["name"],
                 "boss_type": boss["boss_type"],
+                "specialty_type": boss.get("specialty_type"),
                 "badge_name": boss.get("badge_name"),
                 "badge_image_url": boss.get("badge_image_url"),
                 "level_cap": boss["level_cap"],

backend/src/app/seeds/run.py

@@ -429,6 +429,7 @@ async def _export_bosses(session: AsyncSession, vg_data: dict):
             {
                 "name": b.name,
                 "boss_type": b.boss_type,
+                "specialty_type": b.specialty_type,
                 "badge_name": b.badge_name,
                 "badge_image_url": b.badge_image_url,
                 "level_cap": b.level_cap,