diff --git a/fixtures/initial_data.json b/fixtures/initial_data.json
deleted file mode 100644
index 7c7e17e..0000000
--- a/fixtures/initial_data.json
+++ /dev/null
@@ -1,265 +0,0 @@
-[
-  {
-    "model": "users.user",
-    "pk": 1,
-    "fields": {
-      "password": "pbkdf2_sha256$1200000$vBjfJ5vodjFb8FJturiV0J$rmsxK3EtJUsru6Duw2Ap0uXALUN5pt8x1DzxuhBzKuI=",
-      "is_superuser": true,
-      "email": "admin@test.com",
-      "is_staff": true,
-      "is_active": true,
-      "first_name": "Admin",
-      "last_name": "User",
-      "date_joined": "2026-01-15T12:00:00Z"
-    }
-  },
-  {
-    "model": "users.user",
-    "pk": 2,
-    "fields": {
-      "password": "pbkdf2_sha256$1200000$vBjfJ5vodjFb8FJturiV0J$rmsxK3EtJUsru6Duw2Ap0uXALUN5pt8x1DzxuhBzKuI=",
-      "is_superuser": false,
-      "email": "user@test.com",
-      "is_staff": false,
-      "is_active": true,
-      "first_name": "Regular",
-      "last_name": "Customer",
-      "date_joined": "2026-01-15T12:05:00Z"
-    }
-  },
-  {
-    "model": "library.book",
-    "pk": 1,
-    "fields": {
-      "title": "The Great Gatsby",
-      "author": "F. Scott Fitzgerald",
-      "cover": "HARD",
-      "inventory": 5,
-      "daily_fee": "1.50"
-    }
-  },
-  {
-    "model": "library.book",
-    "pk": 2,
-    "fields": {
-      "title": "1984",
-      "author": "George Orwell",
-      "cover": "SOFT",
-      "inventory": 8,
-      "daily_fee": "0.99"
-    }
-  },
-  {
-    "model": "library.book",
-    "pk": 3,
-    "fields": {
-      "title": "Brave New World",
-      "author": "Aldous Huxley",
-      "cover": "SOFT",
-      "inventory": 3,
-      "daily_fee": "1.20"
-    }
-  },
-  {
-    "model": "library.book",
-    "pk": 4,
-    "fields": {
-      "title": "Fahrenheit 451",
-      "author": "Ray Bradbury",
-      "cover": "HARD",
-      "inventory": 10,
-      "daily_fee": "1.10"
-    }
-  },
-  {
-    "model": "library.book",
-    "pk": 5,
-    "fields": {
-      "title": "Animal Farm",
-      "author": "George Orwell",
-      "cover": "SOFT",
-      "inventory": 12,
-      "daily_fee": "0.75"
-    }
-  },
-  {
-    "model": "library.book",
-    "pk": 6,
-    "fields": { "title": "The Hobbit", "author": "J.R.R. Tolkien", "cover": "HARD", "inventory": 15, "daily_fee": "2.00" }
-  },
-  {
-    "model": "library.book",
-    "pk": 7,
-    "fields": { "title": "The Catcher in the Rye", "author": "J.D. Salinger", "cover": "SOFT", "inventory": 4, "daily_fee": "1.30" }
-  },
-  {
-    "model": "library.book",
-    "pk": 8,
-    "fields": { "title": "Lord of the Flies", "author": "William Golding", "cover": "HARD", "inventory": 6, "daily_fee": "1.15" }
-  },
-  {
-    "model": "library.book",
-    "pk": 9,
-    "fields": { "title": "The Alchemist", "author": "Paulo Coelho", "cover": "SOFT", "inventory": 20, "daily_fee": "0.95" }
-  },
-  {
-    "model": "library.book",
-    "pk": 10,
-    "fields": { "title": "Crime and Punishment", "author": "Fyodor Dostoevsky", "cover": "HARD", "inventory": 7, "daily_fee": "1.80" }
-  },
-  {
-    "model": "library.book",
-    "pk": 11,
-    "fields": { "title": "The Stranger", "author": "Albert Camus", "cover": "SOFT", "inventory": 9, "daily_fee": "1.40" }
-  },
-  {
-    "model": "library.book",
-    "pk": 12,
-    "fields": { "title": "Dune", "author": "Frank Herbert", "cover": "HARD", "inventory": 11, "daily_fee": "2.10" }
-  },
-  {
-    "model": "library.book",
-    "pk": 13,
-    "fields": { "title": "The Little Prince", "author": "Antoine de Saint-Exupéry", "cover": "SOFT", "inventory": 25, "daily_fee": "0.50" }
-  },
-  {
-    "model": "library.book",
-    "pk": 14,
-    "fields": { "title": "Moby Dick", "author": "Herman Melville", "cover": "HARD", "inventory": 3, "daily_fee": "1.75" }
-  },
-  {
-    "model": "library.book",
-    "pk": 15,
-    "fields": { "title": "War and Peace", "author": "Leo Tolstoy", "cover": "HARD", "inventory": 5, "daily_fee": "2.50" }
-  },
-  {
-    "model": "library.book",
-    "pk": 16,
-    "fields": { "title": "The Old Man and the Sea", "author": "Ernest Hemingway", "cover": "SOFT", "inventory": 14, "daily_fee": "1.00" }
-  },
-  {
-    "model": "library.book",
-    "pk": 17,
-    "fields": { "title": "To Kill a Mockingbird", "author": "Harper Lee", "cover": "HARD", "inventory": 8, "daily_fee": "1.60" }
-  },
-  {
-    "model": "library.book",
-    "pk": 18,
-    "fields": { "title": "Ulysses", "author": "James Joyce", "cover": "HARD", "inventory": 2, "daily_fee": "3.00" }
-  },
-  {
-    "model": "library.book",
-    "pk": 19,
-    "fields": { "title": "Lolita", "author": "Vladimir Nabokov", "cover": "SOFT", "inventory": 6, "daily_fee": "1.90" }
-  },
-  {
-    "model": "library.book",
-    "pk": 20,
-    "fields": { "title": "The Trial", "author": "Franz Kafka", "cover": "SOFT", "inventory": 9, "daily_fee": "1.45" }
-  },
-  {
-    "model": "library.book",
-    "pk": 21,
-    "fields": { "title": "The Great Hunt", "author": "Robert Jordan", "cover": "HARD", "inventory": 10, "daily_fee": "2.20" }
-  },
-  {
-    "model": "library.book",
-    "pk": 22,
-    "fields": { "title": "Wuthering Heights", "author": "Emily Brontë", "cover": "SOFT", "inventory": 7, "daily_fee": "1.10" }
-  },
-  {
-    "model": "library.book",
-    "pk": 23,
-    "fields": { "title": "Jane Eyre", "author": "Charlotte Brontë", "cover": "HARD", "inventory": 8, "daily_fee": "1.25" }
-  },
-  {
-    "model": "library.book",
-    "pk": 24,
-    "fields": { "title": "Catch-22", "author": "Joseph Heller", "cover": "SOFT", "inventory": 5, "daily_fee": "1.35" }
-  },
-  {
-    "model": "library.book",
-    "pk": 25,
-    "fields": { "title": "Slaughterhouse-Five", "author": "Kurt Vonnegut", "cover": "HARD", "inventory": 4, "daily_fee": "1.55" }
-  },
-  {
-    "model": "library.book",
-    "pk": 26,
-    "fields": { "title": "The Road", "author": "Cormac McCarthy", "cover": "SOFT", "inventory": 11, "daily_fee": "1.65" }
-  },
-  {
-    "model": "library.book",
-    "pk": 27,
-    "fields": { "title": "Beloved", "author": "Toni Morrison", "cover": "HARD", "inventory": 6, "daily_fee": "1.70" }
-  },
-  {
-    "model": "library.book",
-    "pk": 28,
-    "fields": { "title": "The Shining", "author": "Stephen King", "cover": "SOFT", "inventory": 13, "daily_fee": "1.20" }
-  },
-  {
-    "model": "library.book",
-    "pk": 29,
-    "fields": { "title": "Foundation", "author": "Isaac Asimov", "cover": "HARD", "inventory": 9, "daily_fee": "2.05" }
-  },
-  {
-    "model": "library.book",
-    "pk": 30,
-    "fields": { "title": "Dracula", "author": "Bram Stoker", "cover": "SOFT", "inventory": 10, "daily_fee": "0.85" }
-  },
-  {
-    "model": "library.borrowing",
-    "pk": 1,
-    "fields": {
-      "borrow_date": "2026-01-10",
-      "expected_return_date": "2026-01-20",
-      "actual_return_date": null,
-      "book": 1,
-      "user": 2
-    }
-  },
-  {
-    "model": "library.borrowing",
-    "pk": 2,
-    "fields": {
-      "borrow_date": "2026-01-12",
-      "expected_return_date": "2026-01-15",
-      "actual_return_date": "2026-01-14",
-      "book": 2,
-      "user": 2
-    }
-  },
-  {
-    "model": "library.borrowing",
-    "pk": 3,
-    "fields": {
-      "borrow_date": "2026-01-13",
-      "expected_return_date": "2026-01-23",
-      "actual_return_date": null,
-      "book": 5,
-      "user": 2
-    }
-  },
-  {
-    "model": "library.borrowing",
-    "pk": 4,
-    "fields": {
-      "borrow_date": "2026-01-14",
-      "expected_return_date": "2026-01-21",
-      "actual_return_date": null,
-      "book": 10,
-      "user": 1
-    }
-  },
-  {
-    "model": "library.borrowing",
-    "pk": 5,
-    "fields": {
-      "borrow_date": "2026-01-15",
-      "expected_return_date": "2026-01-25",
-      "actual_return_date": null,
-      "book": 30,
-      "user": 2
-    }
-  }
-]
\ No newline at end of file