Refactor backend to SQLModel; reset schema; add Company OS endpoints

backend/alembic/versions/157587037601_initial_company_os_sqlmodel.py

@@ -0,0 +1,32 @@
+"""initial company os (sqlmodel)
+
+Revision ID: 157587037601
+Revises: 
+Create Date: 2026-02-01 23:16:42.890750
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '157587037601'
+down_revision: Union[str, Sequence[str], None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    pass
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    pass
+    # ### end Alembic commands ###