feat: add broadcast field to interfaces

backend/alembic/versions/0006_interface_add_broadcast.py

@@ -0,0 +1,21 @@
+"""add broadcast column to interfaces
+
+Revision ID: 0006
+Revises: 0005
+Create Date: 2026-03-01
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = "0006"
+down_revision = "0005"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column("interfaces", sa.Column("broadcast", sa.String(64), server_default="''", nullable=False))
+
+
+def downgrade() -> None:
+    op.drop_column("interfaces", "broadcast")