feat(tags): add tag management interfaces and update related schemas

backend/app/models/__init__.py

@@ -15,10 +15,10 @@ from app.models.organization_invite_board_access import OrganizationInviteBoardA
 from app.models.organization_invites import OrganizationInvite
 from app.models.organization_members import OrganizationMember
 from app.models.organizations import Organization
+from app.models.tag_assignments import TagAssignment
+from app.models.tags import Tag
 from app.models.task_dependencies import TaskDependency
 from app.models.task_fingerprints import TaskFingerprint
-from app.models.task_tag_assignments import TaskTagAssignment
-from app.models.task_tags import TaskTag
 from app.models.tasks import Task
 from app.models.users import User
 
@@ -41,7 +41,7 @@ __all__ = [
     "TaskDependency",
     "Task",
     "TaskFingerprint",
-    "TaskTag",
-    "TaskTagAssignment",
+    "Tag",
+    "TagAssignment",
     "User",
 ]

backend/app/models/tag_assignments.py

@@ -14,19 +14,19 @@ from app.models.base import QueryModel
 RUNTIME_ANNOTATION_TYPES = (datetime,)
 
 
-class TaskTagAssignment(QueryModel, table=True):
+class TagAssignment(QueryModel, table=True):
     """Association row mapping one task to one tag."""
 
-    __tablename__ = "task_tag_assignments"  # pyright: ignore[reportAssignmentType]
+    __tablename__ = "tag_assignments"  # pyright: ignore[reportAssignmentType]
     __table_args__ = (
         UniqueConstraint(
             "task_id",
             "tag_id",
-            name="uq_task_tag_assignments_task_id_tag_id",
+            name="uq_tag_assignments_task_id_tag_id",
         ),
     )
 
     id: UUID = Field(default_factory=uuid4, primary_key=True)
     task_id: UUID = Field(foreign_key="tasks.id", index=True)
-    tag_id: UUID = Field(foreign_key="task_tags.id", index=True)
+    tag_id: UUID = Field(foreign_key="tags.id", index=True)
     created_at: datetime = Field(default_factory=utcnow)

backend/app/models/tags.py

@@ -1,4 +1,4 @@
-"""Task tag model for organization-scoped task categorization."""
+"""Tag model for organization-scoped task categorization."""
 
 from __future__ import annotations
 
@@ -14,15 +14,15 @@ from app.models.tenancy import TenantScoped
 RUNTIME_ANNOTATION_TYPES = (datetime,)
 
 
-class TaskTag(TenantScoped, table=True):
-    """Organization-scoped task tag used to classify and group tasks."""
+class Tag(TenantScoped, table=True):
+    """Organization-scoped tag used to classify and group tasks."""
 
-    __tablename__ = "task_tags"  # pyright: ignore[reportAssignmentType]
+    __tablename__ = "tags"  # pyright: ignore[reportAssignmentType]
     __table_args__ = (
         UniqueConstraint(
             "organization_id",
             "slug",
-            name="uq_task_tags_organization_id_slug",
+            name="uq_tags_organization_id_slug",
         ),
     )