diff --git a/alembic.ini b/alembic.ini
index f4be675..8d1b2a3 100644
--- a/alembic.ini
+++ b/alembic.ini
@@ -3,7 +3,7 @@
 [alembic]
 script_location = alembic
 prepend_sys_path = .
-sqlalchemy.url = postgresql+psycopg2://iaai:iaai@localhost:5432/iaai_scraper
+sqlalchemy.url = postgresql+psycopg2://encar:encar@localhost:5434/encar_db
 
 [loggers]
 keys = root,sqlalchemy,alembic
diff --git a/alembic/env.py b/alembic/env.py
index f6f4ab0..375e0e3 100644
--- a/alembic/env.py
+++ b/alembic/env.py
@@ -1,4 +1,4 @@
-# Alembic env.py — подключение к БД через Settings.
+# Alembic env.py — подключение к БД через Settings.
 
 import os
 import sys
@@ -10,8 +10,8 @@ from sqlalchemy import engine_from_config, pool
 # Добавляем корень проекта в sys.path
 sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
 
-from iaai_scraper.core.config import Settings
-from iaai_scraper.storage.models import Base
+from encar_scraper.core.config import Settings
+from encar_scraper.storage.models import Base
 
 config = context.config
 
diff --git a/alembic/versions/001_initial.py b/alembic/versions/001_initial.py
index 4179d3e..a533529 100644
--- a/alembic/versions/001_initial.py
+++ b/alembic/versions/001_initial.py
@@ -11,7 +11,7 @@ depends_on: Union[str, Sequence[str], None] = None
 
 
 def upgrade() -> None:
-    # Таблица cars — аукционные машины с IAAI
+    # Таблица cars — автомобили с Encar
     op.create_table(
         "cars",
         sa.Column("id", sa.BigInteger, primary_key=True, autoincrement=True),
diff --git a/alembic/versions/003_add_composite_indexes.py b/alembic/versions/003_add_composite_indexes.py
index 1388d45..5b33f10 100644
--- a/alembic/versions/003_add_composite_indexes.py
+++ b/alembic/versions/003_add_composite_indexes.py
@@ -10,12 +10,12 @@ depends_on: Union[str, Sequence[str], None] = None
 
 
 def upgrade() -> None:
-    # Partial index для активных машин IAAI (is_sold = FALSE)
+    # Partial index для активных машин Encar (is_sold = FALSE)
     # Ускоряет поиск при mark_sold операциях
     op.execute(
-        "CREATE INDEX IF NOT EXISTS ix_cars_active_iaai "
+        "CREATE INDEX IF NOT EXISTS ix_cars_active_encar "
         "ON cars (origin_url) "
-        "WHERE is_sold = FALSE AND origin_id LIKE 'iaai:%'"
+        "WHERE is_sold = FALSE AND origin_id LIKE 'encar:%'"
     )
 
     # Composite index для проверки дубликатов изображений
@@ -35,4 +35,4 @@ def upgrade() -> None:
 def downgrade() -> None:
     op.execute("DROP INDEX IF EXISTS ix_cars_origin_url_id")
     op.drop_index("ix_images_car_id_fullres", table_name="images")
-    op.execute("DROP INDEX IF EXISTS ix_cars_active_iaai")
+    op.execute("DROP INDEX IF EXISTS ix_cars_active_encar")
diff --git a/alembic/versions/004_widen_string_columns.py b/alembic/versions/004_widen_string_columns.py
new file mode 100644
index 0000000..e83980c
--- /dev/null
+++ b/alembic/versions/004_widen_string_columns.py
@@ -0,0 +1,25 @@
+"""widen parser_id brand model columns
+
+Revision ID: 004
+Revises: 003_add_composite_indexes
+Create Date: 2026-04-15
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = "004_widen_string_columns"
+down_revision = "003_add_composite_indexes"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.alter_column("cars", "parser_id", type_=sa.String(255), existing_nullable=False)
+    op.alter_column("cars", "brand", type_=sa.String(100), existing_nullable=False)
+    op.alter_column("cars", "model", type_=sa.String(500), existing_nullable=False)
+
+
+def downgrade() -> None:
+    op.alter_column("cars", "parser_id", type_=sa.String(50), existing_nullable=False)
+    op.alter_column("cars", "brand", type_=sa.String(50), existing_nullable=False)
+    op.alter_column("cars", "model", type_=sa.String(50), existing_nullable=False)
diff --git a/alembic/versions/005_unique_images_constraint.py b/alembic/versions/005_unique_images_constraint.py
new file mode 100644
index 0000000..b77fc6e
--- /dev/null
+++ b/alembic/versions/005_unique_images_constraint.py
@@ -0,0 +1,33 @@
+"""add unique constraint on images(car_id, fullres_image)
+
+Revision ID: 005
+Revises: 004_widen_string_columns
+Create Date: 2026-04-16
+"""
+from alembic import op
+
+revision = "005_unique_images_constraint"
+down_revision = "004_widen_string_columns"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Удаляем дубли через CTE + ROW_NUMBER (быстрее чем NOT IN subquery)
+    op.execute("""
+        WITH dupes AS (
+            SELECT id,
+                   ROW_NUMBER() OVER (PARTITION BY car_id, fullres_image ORDER BY id) AS rn
+            FROM images
+        )
+        DELETE FROM images WHERE id IN (SELECT id FROM dupes WHERE rn > 1)
+    """)
+    op.create_unique_constraint(
+        "uq_images_car_id_fullres",
+        "images",
+        ["car_id", "fullres_image"],
+    )
+
+
+def downgrade() -> None:
+    op.drop_constraint("uq_images_car_id_fullres", "images", type_="unique")
diff --git a/alembic/versions/006_image_car_id_bigint.py b/alembic/versions/006_image_car_id_bigint.py
new file mode 100644
index 0000000..3cc3373
--- /dev/null
+++ b/alembic/versions/006_image_car_id_bigint.py
@@ -0,0 +1,31 @@
+"""widen images.car_id from integer to bigint
+
+Revision ID: 006
+Revises: 005_unique_images_constraint
+Create Date: 2026-04-16
+"""
+import sqlalchemy as sa
+from alembic import op
+
+revision = "006_image_car_id_bigint"
+down_revision = "005_unique_images_constraint"
+
+
+def upgrade() -> None:
+    op.alter_column(
+        "images",
+        "car_id",
+        existing_type=sa.Integer(),
+        type_=sa.BigInteger(),
+        existing_nullable=False,
+    )
+
+
+def downgrade() -> None:
+    op.alter_column(
+        "images",
+        "car_id",
+        existing_type=sa.BigInteger(),
+        type_=sa.Integer(),
+        existing_nullable=False,
+    )