style: apply black and isort formatting across entire codebase

- Standardize quote style (single to double quotes)
- Reorder and group imports alphabetically
- Fix line breaks and indentation for consistency
- Apply PEP 8 formatting standards

Also updated Makefile to exclude both venv and .venv from code quality checks.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

scripts/create_inventory.py

@@ -12,17 +12,18 @@ from pathlib import Path
 # Add project root to path
 sys.path.insert(0, str(Path(__file__).parent.parent))
 
-import sqlite3
-from datetime import datetime, UTC
 import os
+import sqlite3
+from datetime import UTC, datetime
+
 from dotenv import load_dotenv
 
 # Load environment variables
 load_dotenv()
 
 # Get database URL
-database_url = os.getenv('DATABASE_URL', 'wizamart.db')
-db_path = database_url.replace('sqlite:///', '')
+database_url = os.getenv("DATABASE_URL", "wizamart.db")
+db_path = database_url.replace("sqlite:///", "")
 
 print(f"📦 Creating inventory entries in {db_path}...")
 
@@ -30,12 +31,14 @@ conn = sqlite3.connect(db_path)
 cursor = conn.cursor()
 
 # Get products without inventory
-cursor.execute("""
+cursor.execute(
+    """
     SELECT p.id, p.vendor_id, p.product_id 
     FROM products p
     LEFT JOIN inventory i ON p.id = i.product_id
     WHERE i.id IS NULL
-""")
+"""
+)
 products_without_inventory = cursor.fetchall()
 
 if not products_without_inventory:
@@ -47,7 +50,8 @@ print(f"📦 Creating inventory for {len(products_without_inventory)} products..
 
 # Create inventory entries
 for product_id, vendor_id, sku in products_without_inventory:
-    cursor.execute("""
+    cursor.execute(
+        """
         INSERT INTO inventory (
             vendor_id,
             product_id,
@@ -57,15 +61,17 @@ for product_id, vendor_id, sku in products_without_inventory:
             created_at,
             updated_at
         ) VALUES (?, ?, ?, ?, ?, ?, ?)
-    """, (
-        vendor_id,
-        product_id,
-        'Main Warehouse',
-        100,  # Total quantity
-        0,    # Reserved quantity
-        datetime.now(UTC),
-        datetime.now(UTC)
-    ))
+    """,
+        (
+            vendor_id,
+            product_id,
+            "Main Warehouse",
+            100,  # Total quantity
+            0,  # Reserved quantity
+            datetime.now(UTC),
+            datetime.now(UTC),
+        ),
+    )
 
 conn.commit()
 
@@ -76,7 +82,9 @@ cursor.execute("SELECT COUNT(*) FROM inventory")
 total_count = cursor.fetchone()[0]
 print(f"\n📊 Total inventory entries: {total_count}")
 
-cursor.execute("SELECT product_id, location, quantity, reserved_quantity FROM inventory LIMIT 5")
+cursor.execute(
+    "SELECT product_id, location, quantity, reserved_quantity FROM inventory LIMIT 5"
+)
 print("\n📦 Sample inventory:")
 for row in cursor.fetchall():
     available = row[2] - row[3]