fix(migrations): merge workspace revision heads

src/langbot/pkg/persistence/alembic/versions/0017_repair_local_workspace_owner.py

@@ -1,7 +1,7 @@
 """repair an ownerless local Workspace after tenancy migration
 
-Revision ID: 0018_local_owner_repair
-Revises: 0016_agent_workspace, 0017_oss_workspace_identity
+Revision ID: 0017_local_owner_repair
+Revises: 0016_agent_workspace
 Create Date: 2026-07-31
 """
 
@@ -14,8 +14,8 @@ import sqlalchemy as sa
 from alembic import op
 
 
-revision = '0018_local_owner_repair'
-down_revision = ('0016_agent_workspace', '0017_oss_workspace_identity')
+revision = '0017_local_owner_repair'
+down_revision = '0016_agent_workspace'
 branch_labels = None
 depends_on = None
 

src/langbot/pkg/persistence/alembic/versions/0018_merge_workspace_heads.py

@@ -0,0 +1,19 @@
+"""merge AgentRunner and OSS Workspace migration heads
+
+Revision ID: 0018_merge_workspace_heads
+Revises: 0017_local_owner_repair, 0017_oss_workspace_identity
+Create Date: 2026-08-01
+"""
+
+revision = '0018_merge_workspace_heads'
+down_revision = ('0017_local_owner_repair', '0017_oss_workspace_identity')
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    pass
+
+
+def downgrade() -> None:
+    pass