"""Add ZeroTier / Portal Network models.

Revision ID: 020_zerotier
Revises: 019_audit_varchar
Create Date: 2026-03-19

SUPERSEDED by 023_zerotier_drop_legacy which creates all ZeroTier tables
idempotently (with IF NOT EXISTS / if_not_exists=True).  This migration is
kept as a no-op to preserve the Alembic revision chain for databases that
already have '020_zerotier' stamped (e.g. dev environments).
"""

revision = "020_zerotier"
down_revision = "019_audit_varchar"
branch_labels = None
depends_on = None


def upgrade():
    # No-op — 023_zerotier_drop_legacy handles everything idempotently.
    pass


def downgrade():
    # No-op — 023_zerotier_drop_legacy handles rollback.
    pass