Remove HR module; provision agent sessions via /employees

backend/alembic/versions/4dffc5312eb8_remove_hr_module.py

@@ -0,0 +1,35 @@
+"""remove hr module
+
+Revision ID: 4dffc5312eb8
+Revises: bacd5e6a253d
+Create Date: 2026-02-02 16:46:47.579836
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "4dffc5312eb8"
+down_revision: Union[str, Sequence[str], None] = "bacd5e6a253d"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+
+    # Drop HR tables. If they don't exist (fresh db + baseline changed later), be safe.
+    op.execute("DROP TABLE IF EXISTS headcount_requests CASCADE")
+    op.execute("DROP TABLE IF EXISTS employment_actions CASCADE")
+    op.execute("DROP TABLE IF EXISTS agent_onboardings CASCADE")
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+
+    # We intentionally do not recreate the HR tables; HR module is removed.
+    # If ever needed, re-introduce with a new migration.
+    pass