Complete DDS training workflow and delivery package

backend/app/db/migrations/versions/a4c9d1e2f3b4_learning_materials.py

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+"""учебные материалы и назначения
+
+Revision ID: a4c9d1e2f3b4
+Revises: e6e2ab171dd7
+Create Date: 2026-09-23
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "a4c9d1e2f3b4"
+down_revision = "e6e2ab171dd7"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "learning_materials",
+        sa.Column("id", sa.Uuid(), nullable=False),
+        sa.Column("title", sa.String(length=200), nullable=False),
+        sa.Column("description", sa.Text(), nullable=False),
+        sa.Column("level", sa.String(length=4), nullable=False),
+        sa.Column("kind", sa.String(length=16), nullable=False),
+        sa.Column("body", sa.Text(), nullable=False),
+        sa.Column("scenario_id", sa.String(length=80), nullable=True),
+        sa.Column("file_name", sa.String(length=240), nullable=True),
+        sa.Column("media_type", sa.String(length=120), nullable=True),
+        sa.Column("file_data", sa.LargeBinary(), nullable=True),
+        sa.Column("file_sha256", sa.String(length=64), nullable=True),
+        sa.Column("active", sa.Boolean(), nullable=False),
+        sa.Column("created_by", sa.String(length=80), nullable=False),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("now()"), nullable=False),
+        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("now()"), nullable=False),
+        sa.ForeignKeyConstraint(["scenario_id"], ["scenarios.id"], ondelete="SET NULL"),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_table(
+        "material_assignments",
+        sa.Column("id", sa.Uuid(), nullable=False),
+        sa.Column("material_id", sa.Uuid(), nullable=False),
+        sa.Column("trainee_id", sa.Uuid(), nullable=False),
+        sa.Column("assigned_by", sa.String(length=80), nullable=False),
+        sa.Column("assigned_at", sa.DateTime(timezone=True), server_default=sa.text("now()"), nullable=False),
+        sa.Column("completed_at", sa.DateTime(timezone=True), nullable=True),
+        sa.ForeignKeyConstraint(["material_id"], ["learning_materials.id"], ondelete="CASCADE"),
+        sa.ForeignKeyConstraint(["trainee_id"], ["trainees.id"], ondelete="CASCADE"),
+        sa.PrimaryKeyConstraint("id"),
+        sa.UniqueConstraint("material_id", "trainee_id", name="uq_material_assignment"),
+    )
+    op.create_index(
+        "ix_material_assignments_trainee",
+        "material_assignments",
+        ["trainee_id", "assigned_at"],
+        unique=False,
+    )
+
+
+def downgrade() -> None:
+    op.drop_index("ix_material_assignments_trainee", table_name="material_assignments")
+    op.drop_table("material_assignments")
+    op.drop_table("learning_materials")

backend/app/db/migrations/versions/b5e0f2a3c4d5_active_session_checkpoint.py

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+"""снимки активных занятий для восстановления
+
+Revision ID: b5e0f2a3c4d5
+Revises: a4c9d1e2f3b4
+Create Date: 2026-09-23
+"""
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+
+revision = "b5e0f2a3c4d5"
+down_revision = "a4c9d1e2f3b4"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column("sessions", sa.Column("live_state", postgresql.JSONB(), nullable=True))
+    op.add_column(
+        "sessions",
+        sa.Column("checkpoint_at", sa.DateTime(timezone=True), nullable=True),
+    )
+    op.create_index(
+        "ix_sessions_active_checkpoint",
+        "sessions",
+        ["checkpoint_at"],
+        unique=False,
+        postgresql_where=sa.text("ended_at IS NULL AND live_state IS NOT NULL"),
+    )
+
+
+def downgrade() -> None:
+    op.drop_index("ix_sessions_active_checkpoint", table_name="sessions")
+    op.drop_column("sessions", "checkpoint_at")
+    op.drop_column("sessions", "live_state")

backend/app/db/migrations/versions/c6f1a3b4d5e6_persistent_auth_version.py

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+"""сохраняемая версия полномочий пользователя
+
+Revision ID: c6f1a3b4d5e6
+Revises: b5e0f2a3c4d5
+Create Date: 2026-09-23
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "c6f1a3b4d5e6"
+down_revision = "b5e0f2a3c4d5"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column(
+        "users",
+        sa.Column("auth_version", sa.Integer(), server_default="0", nullable=False),
+    )
+
+
+def downgrade() -> None:
+    op.drop_column("users", "auth_version")

backend/app/db/migrations/versions/d7e2f4a5b6c7_scenario_owners.py

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+"""ограничение авторского контента и занятий владельцем-преподавателем
+
+Revision ID: d7e2f4a5b6c7
+Revises: c6f1a3b4d5e6
+Create Date: 2026-09-23
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "d7e2f4a5b6c7"
+down_revision = "c6f1a3b4d5e6"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column(
+        "scenarios",
+        sa.Column("owner_login", sa.String(length=80), nullable=True),
+    )
+    op.add_column(
+        "sessions",
+        sa.Column("owner_login", sa.String(length=80), nullable=True),
+    )
+
+
+def downgrade() -> None:
+    op.drop_column("sessions", "owner_login")
+    op.drop_column("scenarios", "owner_login")

backend/app/db/migrations/versions/f7a3c9d1e2b4_instructor_owned_groups.py

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+"""закрепить учебные группы за преподавателем
+
+Revision ID: f7a3c9d1e2b4
+Revises: d7e2f4a5b6c7
+Create Date: 2026-09-23
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "f7a3c9d1e2b4"
+down_revision = "d7e2f4a5b6c7"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Existing groups are not auto-assigned: historical membership/analytics may
+    # span instructors, so they remain admin-managed until explicitly migrated.
+    op.add_column("groups", sa.Column("owner_login", sa.String(length=80), nullable=True))
+
+
+def downgrade() -> None:
+    op.drop_column("groups", "owner_login")