feat: added tags for cards, aligned status headers

models/card_tag.py

@@ -0,0 +1,45 @@
+from typing import TYPE_CHECKING
+
+from sqlalchemy import ForeignKey, Column, Table, UniqueConstraint, Index
+from sqlalchemy.orm import mapped_column, Mapped, relationship
+
+from models import BaseModel
+
+if TYPE_CHECKING:
+    from models import Project, Card
+
+
+cards_card_tags = Table(
+    'cards_card_tags',
+    BaseModel.metadata,
+    Column('card_id', ForeignKey('cards.id'), primary_key=True),
+    Column('card_tag_id', ForeignKey('card_tags.id'), primary_key=True),
+)
+
+
+class CardTag(BaseModel):
+    __tablename__ = 'card_tags'
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    name: Mapped[str] = mapped_column(nullable=False)
+    is_deleted: Mapped[bool] = mapped_column(default=False, server_default='0')
+
+    project_id: Mapped[int] = mapped_column(
+        ForeignKey('projects.id'),
+        nullable=False,
+    )
+    project: Mapped['Project'] = relationship(
+        'Project',
+        back_populates='tags',
+        lazy='noload',
+    )
+
+    cards: Mapped[list['Card']] = relationship(
+        secondary='cards_card_tags',
+        lazy='noload',
+        back_populates='tags',
+    )
+
+    __table_args__ = (
+        Index('idx_card_name_project_id', 'name', 'project_id', 'is_deleted'),
+    )