fix: replace print() debug statements with logger calls in db_engine.py (#22)

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

app/db_engine.py

@@ -459,7 +459,7 @@ class Team(BaseModel):
             try:
                 active_roster['players'].remove(move.player)
             except:
-                print(f'I could not drop {move.player.name}')
+                logger.error(f'I could not drop {move.player.name}')
 
         for move in all_adds:
             guy_pos = move.player.get_positions()
@@ -520,7 +520,7 @@ class Team(BaseModel):
             try:
                 short_roster['players'].remove(move.player)
             except:
-                print(f'I could not drop {move.player.name}')
+                logger.error(f'I could not drop {move.player.name}')
 
         for move in all_adds:
             guy_pos = move.player.get_positions()
@@ -581,7 +581,7 @@ class Team(BaseModel):
             try:
                 long_roster['players'].remove(move.player)
             except:
-                print(f'I could not drop {move.player.name}')
+                logger.error(f'I could not drop {move.player.name}')
 
         for move in all_adds:
             guy_pos = move.player.get_positions()
@@ -887,7 +887,7 @@ class Player(BaseModel):
         try:
             player = Player.get(fn.Lower(Player.name) == name.lower(), Player.season == num)
         except Exception as e:
-            print(f'**Error** (db_engine player): {e}')
+            logger.error(f'**Error** (db_engine player): {e}')
         finally:
             return player