feat(memoir): 回忆录分段两阶段管线（Phase1 分类 / Phase2 叙事）与配置、测试

api/alembic/versions/0006_segment_memoir_phase_flags.py

@@ -0,0 +1,42 @@
+"""segments：Phase1/Phase2 标志（叙事延迟管线）
+
+Revision ID: 0006_segment_memoir_phases
+Revises: 0005_cleanup_story_links
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+
+from alembic import op
+
+revision: str = "0006_segment_memoir_phases"
+down_revision: Union[str, None] = "0005_cleanup_story_links"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.add_column(
+        "segments",
+        sa.Column(
+            "narrated",
+            sa.Boolean(),
+            nullable=False,
+            server_default=sa.text("false"),
+        ),
+    )
+    op.add_column(
+        "segments",
+        sa.Column(
+            "skip_narrative",
+            sa.Boolean(),
+            nullable=False,
+            server_default=sa.text("false"),
+        ),
+    )
+
+
+def downgrade() -> None:
+    op.drop_column("segments", "skip_narrative")
+    op.drop_column("segments", "narrated")