diff --git a/lib/db/migrations/0032_add_site_banner_and_canvas_settings.sql b/lib/db/migrations/0032_add_site_banner_and_canvas_settings.sql
new file mode 100644
index 000000000..068e15e7d
--- /dev/null
+++ b/lib/db/migrations/0032_add_site_banner_and_canvas_settings.sql
@@ -0,0 +1,20 @@
+-- Ensure newer SiteSettings fields exist (banner + lovart home + canvas toggles)
+-- These columns are referenced by /api/site-settings and admin settings UI.
+
+ALTER TABLE "SiteSettings" ADD COLUMN IF NOT EXISTS "bannerEnabled" boolean NOT NULL DEFAULT true;
+ALTER TABLE "SiteSettings" ADD COLUMN IF NOT EXISTS "bannerText" text DEFAULT '升级会员, Nano Banana Pro 免费365天!';
+ALTER TABLE "SiteSettings" ADD COLUMN IF NOT EXISTS "bannerLink" text;
+
+ALTER TABLE "SiteSettings" ADD COLUMN IF NOT EXISTS "tutorialVideoUrl" text;
+ALTER TABLE "SiteSettings" ADD COLUMN IF NOT EXISTS "tutorialEnabled" boolean NOT NULL DEFAULT false;
+ALTER TABLE "SiteSettings" ADD COLUMN IF NOT EXISTS "rankingEnabled" boolean NOT NULL DEFAULT true;
+
+ALTER TABLE "SiteSettings" ADD COLUMN IF NOT EXISTS "canvasEnabled" boolean NOT NULL DEFAULT true;
+ALTER TABLE "SiteSettings" ADD COLUMN IF NOT EXISTS "canvasDefaultModelId" varchar(128);
+ALTER TABLE "SiteSettings" ADD COLUMN IF NOT EXISTS "canvasAutoModeDefaultModelId" varchar(128);
+
+-- Ensure at least one row exists
+INSERT INTO "SiteSettings" ("siteName")
+SELECT 'AI Chatbot'
+WHERE NOT EXISTS (SELECT 1 FROM "SiteSettings");
+