Feat/inbound telephony (#113)

* feat: inbound telephony (twilio & vobiz)

* chore: add ruff and lint formatting

* fix: add missing cloudonix interface compliance implementation

api/alembic/versions/b79f19f68157_add_call_type_column_to_workflow_runs.py

@@ -0,0 +1,45 @@
+"""add call_type column to workflow_runs
+
+Revision ID: b79f19f68157
+Revises: 488eb58e4e6e
+Create Date: 2026-01-08 21:20:17.298334
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = "b79f19f68157"
+down_revision: Union[str, None] = "488eb58e4e6e"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Create the workflow_call_type enum
+    sa.Enum("inbound", "outbound", name="workflow_call_type").create(op.get_bind())
+
+    # Add call_type column to workflow_runs table
+    op.add_column(
+        "workflow_runs",
+        sa.Column(
+            "call_type",
+            postgresql.ENUM(
+                "inbound", "outbound", name="workflow_call_type", create_type=False
+            ),
+            server_default=sa.text("'outbound'::workflow_call_type"),
+            nullable=False,
+        ),
+    )
+
+
+def downgrade() -> None:
+    # Drop the call_type column
+    op.drop_column("workflow_runs", "call_type")
+
+    # Drop the workflow_call_type enum
+    sa.Enum("inbound", "outbound", name="workflow_call_type").drop(op.get_bind())