M2: implement vehicle return vertical slice

Transactional return command with idempotency, row-lock concurrency control, odometer-regression handling, vehicle status derivation, outbox event, audit trail. Result-summary UI on booking detail. 26 backend tests passing, ruff clean. Verified end-to-end via browser against S1 demo scenario; fixed two real defects found only through browser testing (UI state loss on status transition, unflushed UUID default).
2026-08-01 21:49:46 +02:00
parent 03c5b60235
commit 0091c57c7f
14 changed files with 763 additions and 10 deletions
@@ -0,0 +1,41 @@
+"""idempotency records
+
+Revision ID: e7b08389f47f
+Revises: c9498525abb5
+Create Date: 2026-08-01 21:24:35.472070
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = 'e7b08389f47f'
+down_revision: Union[str, None] = 'c9498525abb5'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('idempotency_records',
+    sa.Column('idempotency_key', sa.String(length=128), nullable=False),
+    sa.Column('booking_id', sa.UUID(), nullable=False),
+    sa.Column('response_status', sa.Integer(), nullable=False),
+    sa.Column('response_body', postgresql.JSONB(astext_type=sa.Text()), nullable=False),
+    sa.Column('id', sa.UUID(), nullable=False),
+    sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=False),
+    sa.Column('updated_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=False),
+    sa.ForeignKeyConstraint(['booking_id'], ['bookings.id'], ),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('idempotency_key')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('idempotency_records')
+    # ### end Alembic commands ###