diff --git a/alembic/versions/089_viral_video_storyboard_backfill.py b/alembic/versions/089_viral_video_storyboard_backfill.py
new file mode 100644
index 000000000..1f0786919
--- /dev/null
+++ b/alembic/versions/089_viral_video_storyboard_backfill.py
@@ -0,0 +1,49 @@
+"""viral video add storyboard + generated_copy_text (complement 088)
+
+Revision ID: 089_viral_video_storyboard_backfill
+Revises: 088_viral_video_copy_result
+Create Date: 2026-10-01
+
+#2129 兜底迁移：补齐 _VIRAL_VIDEO_BACKFILL_COLS 中所有列，覆盖
+# watchtower 自动部署未跑历史 migration、且 AUTO_CREATE_SCHEMA=false 时
+# _ensure_viral_video_columns 未执行的场景。
+# 幂等 ADD COLUMN IF NOT EXISTS，已存在则跳过。
+"""
+
+import sqlalchemy as sa
+
+from alembic import op
+
+revision = "089_viral_video_storyboard_backfill"
+down_revision = "088_viral_video_copy_result"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    cols = [
+        ("storyboard", "JSON"),
+        ("generated_copy_text", "TEXT NOT NULL DEFAULT ''"),
+        ("voice_id", "VARCHAR(200) NOT NULL DEFAULT ''"),
+        ("voice_source", "VARCHAR(20) NOT NULL DEFAULT ''"),
+        ("video_ratio", "VARCHAR(10) NOT NULL DEFAULT '9:16'"),
+        ("video_model", "VARCHAR(100) NOT NULL DEFAULT ''"),
+        ("copy_result", "JSON"),
+    ]
+    conn = op.get_bind()
+    for name, ddl in cols:
+        try:
+            conn.execute(sa.text(f"ALTER TABLE viral_video_jobs ADD COLUMN IF NOT EXISTS {name} {ddl}"))
+        except Exception:
+            try:
+                conn.execute(sa.text(f"ALTER TABLE viral_video_jobs ADD COLUMN {name} {ddl}"))
+            except Exception:
+                pass
+
+
+def downgrade() -> None:
+    for name in ("copy_result", "video_model", "video_ratio", "voice_source", "voice_id", "generated_copy_text", "storyboard"):
+        try:
+            op.drop_column("viral_video_jobs", name)
+        except Exception:
+            pass