feat: add organization-related models and update schemas for organization management

backend/alembic/versions/2c7b1c4d9e10_merge_heads.py

@@ -0,0 +1,24 @@
+"""merge heads
+
+Revision ID: 2c7b1c4d9e10
+Revises: 1f2a3b4c5d6e, af403671a8c4
+Create Date: 2026-02-07
+"""
+
+from __future__ import annotations
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "2c7b1c4d9e10"
+down_revision = ("1f2a3b4c5d6e", "af403671a8c4")
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    pass
+
+
+def downgrade() -> None:
+    pass