feat: Add status and error fields to TTS model and implement background processing for TTS generations

alembic/versions/0d9b7f1c367f_add_status_and_error_fields_to_tts_table.py

@@ -0,0 +1,34 @@
+"""Add status and error fields to TTS table
+
+Revision ID: 0d9b7f1c367f
+Revises: e617c155eea9
+Create Date: 2025-09-21 14:09:56.418372
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '0d9b7f1c367f'
+down_revision: Union[str, Sequence[str], None] = 'e617c155eea9'
+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! ###
+    op.add_column('tts', sa.Column('status', sa.String(), nullable=False, server_default='pending'))
+    op.add_column('tts', sa.Column('error', sa.String(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('tts', 'error')
+    op.drop_column('tts', 'status')
+    # ### end Alembic commands ###