Squashed commit of the following:

commit 893b229cc6
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 22:14:08 2025 -0500

    j

commit 06f539aea2
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:55:30 2025 -0500

    fk

commit d0c2960ec9
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:50:53 2025 -0500

    frick

commit 6b1362c166
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:49:40 2025 -0500

    database

commit 8cadc6df4c
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:38:09 2025 -0500

    asdf

commit 1ca6f98684
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:32:50 2025 -0500

    fffff

commit 8bb337a9c3
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:31:13 2025 -0500

    ffff

commit 65aba280c5
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:26:16 2025 -0500

    aa

commit 59ef03a59e
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:24:21 2025 -0500

    asdf

commit f44d5740fc
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:23:32 2025 -0500

    aaa

commit 13c96b1643
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:18:54 2025 -0500

    sdf

commit 949c795fd1
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:17:53 2025 -0500

    asdf

commit 8c3cd423fe
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:56:01 2025 -0500

    app2

commit 78eafc739e
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:54:55 2025 -0500

    app

commit dc47eced14
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:43:15 2025 -0500

    asdfasdfasdf

commit e24bcae88c
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:39:44 2025 -0500

    a

commit c894451bfe
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:38:20 2025 -0500

    req

commit 3d09869562
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:33:27 2025 -0500

    wrong number = code dont work lol i love computers

commit 4c93a1271b
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:29:39 2025 -0500

    q

commit 1f5361da88
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 18:27:20 2025 -0500

    same as original code now -5 days of my life

commit 511b070cbb
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 13:52:28 2025 -0500

    pricey worky

commit 964fdd641b
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 11:37:29 2025 -0500

    prep for pricing service work

commit a78c3bcba3
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Wed Feb 5 21:51:22 2025 -0500

    more stuff yay

commit bd9cfca7a9
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Tue Feb 4 22:30:33 2025 -0500

    GIGA FIXED EVERYTHING OMG

commit 85510a4671
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Tue Feb 4 00:01:34 2025 -0500

    data model change and some new services

app/services/util/_dataframe.py

@@ -0,0 +1,72 @@
+import pandas as pd
+from io import StringIO
+from app.db.models import File
+
+
+class ManaboxRow:
+    def __init__(self, row: pd.Series):
+        # Integer field
+        try:
+            self.manabox_id = int(row['manabox_id'])
+        except (ValueError, TypeError):
+            raise ValueError(f"manabox_id must be convertible to integer, got: {row['manabox_id']}")
+
+        # String fields with None/NaN handling
+        self.name = str(row['name']) if pd.notna(row['name']) else ''
+        self.set_code = str(row['set_code']) if pd.notna(row['set_code']) else ''
+        self.set_name = str(row['set_name']) if pd.notna(row['set_name']) else ''
+        self.collector_number = str(row['collector_number']) if pd.notna(row['collector_number']) else ''
+        self.foil = str(row['foil']) if pd.notna(row['foil']) else ''
+        self.rarity = str(row['rarity']) if pd.notna(row['rarity']) else ''
+        self.scryfall_id = str(row['scryfall_id']) if pd.notna(row['scryfall_id']) else ''
+        self.condition = str(row['condition']) if pd.notna(row['condition']) else ''
+        self.language = str(row['language']) if pd.notna(row['language']) else ''
+        self.quantity = str(row['quantity']) if pd.notna(row['quantity']) else ''
+
+
+class TCGPlayerPricingRow:
+    def __init__(self, row: pd.Series):
+        self.tcgplayer_id = row['tcgplayer_id']
+        self.product_line = row['product_line']
+        self.set_name = row['set_name']
+        self.product_name = row['product_name']
+        self.title = row['title']
+        self.number = row['number']
+        self.rarity = row['rarity']
+        self.condition = row['condition']
+        self.tcg_market_price = row['tcg_market_price']
+        self.tcg_direct_low = row['tcg_direct_low']
+        self.tcg_low_price_with_shipping = row['tcg_low_price_with_shipping']
+        self.tcg_low_price = row['tcg_low_price']
+        self.total_quantity = row['total_quantity']
+        self.add_to_quantity = row['add_to_quantity']
+        self.tcg_marketplace_price = row['tcg_marketplace_price']
+        self.photo_url = row['photo_url']
+
+
+class DataframeUtil:
+    def __init__(self):
+        pass
+
+    def format_df_columns(self, df: pd.DataFrame) -> pd.DataFrame:
+        df.columns = df.columns.str.lower()
+        df.columns = df.columns.str.replace(' ', '_')
+        return df
+    
+    def file_to_df(self, file: File) -> pd.DataFrame:
+        with open(file.filepath, 'rb') as f:
+            content = f.read()
+        content = content.decode('utf-8')
+        df = pd.read_csv(StringIO(content))
+        df = self.format_df_columns(df)
+        return df
+    
+    def csv_bytes_to_df(self, content: bytes) -> pd.DataFrame:
+        content = content.decode('utf-8')
+        df = pd.read_csv(StringIO(content))
+        df = self.format_df_columns(df)
+        return df
+    
+    def df_to_csv_bytes(self, df: pd.DataFrame) -> bytes:
+        csv = df.to_csv(index=False)
+        return csv.encode('utf-8')