diff --git a/app/db_engine.py b/app/db_engine.py
index 4183bb9..7cdbb80 100644
--- a/app/db_engine.py
+++ b/app/db_engine.py
@@ -1194,6 +1194,155 @@ if not SKIP_TABLE_CREATION:
     db.create_tables([ScoutOpportunity, ScoutClaim], safe=True)
 
 
+class PlayerSeasonStats(BaseModel):
+    player = ForeignKeyField(Player)
+    team = ForeignKeyField(Team)
+    season = IntegerField()
+
+    # Batting stats
+    games_batting = IntegerField(default=0)
+    pa = IntegerField(default=0)
+    ab = IntegerField(default=0)
+    hits = IntegerField(default=0)
+    doubles = IntegerField(default=0)
+    triples = IntegerField(default=0)
+    hr = IntegerField(default=0)
+    bb = IntegerField(default=0)
+    hbp = IntegerField(default=0)
+    so = IntegerField(default=0)
+    rbi = IntegerField(default=0)
+    runs = IntegerField(default=0)
+    sb = IntegerField(default=0)
+    cs = IntegerField(default=0)
+
+    # Pitching stats
+    games_pitching = IntegerField(default=0)
+    outs = IntegerField(default=0)
+    k = IntegerField(default=0)
+    bb_allowed = IntegerField(default=0)
+    hits_allowed = IntegerField(default=0)
+    hr_allowed = IntegerField(default=0)
+    wins = IntegerField(default=0)
+    losses = IntegerField(default=0)
+    saves = IntegerField(default=0)
+    holds = IntegerField(default=0)
+    blown_saves = IntegerField(default=0)
+
+    # Meta
+    last_game = ForeignKeyField(StratGame, null=True)
+    last_updated_at = DateTimeField(null=True)
+
+    class Meta:
+        database = db
+        table_name = "player_season_stats"
+
+
+player_season_stats_unique_index = ModelIndex(
+    PlayerSeasonStats,
+    (PlayerSeasonStats.player, PlayerSeasonStats.team, PlayerSeasonStats.season),
+    unique=True,
+)
+PlayerSeasonStats.add_index(player_season_stats_unique_index)
+
+player_season_stats_team_season_index = ModelIndex(
+    PlayerSeasonStats,
+    (PlayerSeasonStats.team, PlayerSeasonStats.season),
+    unique=False,
+)
+PlayerSeasonStats.add_index(player_season_stats_team_season_index)
+
+player_season_stats_player_season_index = ModelIndex(
+    PlayerSeasonStats,
+    (PlayerSeasonStats.player, PlayerSeasonStats.season),
+    unique=False,
+)
+PlayerSeasonStats.add_index(player_season_stats_player_season_index)
+
+
+if not SKIP_TABLE_CREATION:
+    db.create_tables([PlayerSeasonStats], safe=True)
+
+
+class EvolutionTrack(BaseModel):
+    name = CharField(unique=True)
+    card_type = CharField()  # 'batter', 'sp', 'rp'
+    formula = CharField()  # e.g. "pa + tb * 2"
+    t1_threshold = IntegerField()
+    t2_threshold = IntegerField()
+    t3_threshold = IntegerField()
+    t4_threshold = IntegerField()
+
+    class Meta:
+        database = db
+        table_name = "evolution_track"
+
+
+class EvolutionCardState(BaseModel):
+    player = ForeignKeyField(Player)
+    team = ForeignKeyField(Team)
+    track = ForeignKeyField(EvolutionTrack)
+    current_tier = IntegerField(default=0)  # 0-4
+    current_value = FloatField(default=0.0)
+    fully_evolved = BooleanField(default=False)
+    last_evaluated_at = DateTimeField(null=True)
+
+    class Meta:
+        database = db
+        table_name = "evolution_card_state"
+
+
+evolution_card_state_index = ModelIndex(
+    EvolutionCardState,
+    (EvolutionCardState.player, EvolutionCardState.team),
+    unique=True,
+)
+EvolutionCardState.add_index(evolution_card_state_index)
+
+
+class EvolutionTierBoost(BaseModel):
+    track = ForeignKeyField(EvolutionTrack)
+    tier = IntegerField()  # 1-4
+    boost_type = CharField()  # e.g. 'rating', 'stat'
+    boost_target = CharField()  # e.g. 'contact_vl', 'power_vr'
+    boost_value = FloatField(default=0.0)
+
+    class Meta:
+        database = db
+        table_name = "evolution_tier_boost"
+
+
+evolution_tier_boost_index = ModelIndex(
+    EvolutionTierBoost,
+    (
+        EvolutionTierBoost.track,
+        EvolutionTierBoost.tier,
+        EvolutionTierBoost.boost_type,
+        EvolutionTierBoost.boost_target,
+    ),
+    unique=True,
+)
+EvolutionTierBoost.add_index(evolution_tier_boost_index)
+
+
+class EvolutionCosmetic(BaseModel):
+    name = CharField(unique=True)
+    tier_required = IntegerField(default=0)
+    cosmetic_type = CharField()  # 'frame', 'badge', 'theme'
+    css_class = CharField(null=True)
+    asset_url = CharField(null=True)
+
+    class Meta:
+        database = db
+        table_name = "evolution_cosmetic"
+
+
+if not SKIP_TABLE_CREATION:
+    db.create_tables(
+        [EvolutionTrack, EvolutionCardState, EvolutionTierBoost, EvolutionCosmetic],
+        safe=True,
+    )
+
+
 db.close()
 
 # scout_db = SqliteDatabase(
diff --git a/ruff.toml b/ruff.toml
new file mode 100644
index 0000000..fa7ff63
--- /dev/null
+++ b/ruff.toml
@@ -0,0 +1,4 @@
+[lint]
+# F403/F405: peewee ORM uses `from peewee import *` intentionally in db_engine.py
+# These are suppressed per-file to avoid breaking the wildcard import pattern.
+per-file-ignores = { "app/db_engine.py" = ["F403", "F405"] }