chore(db): finish Prisma cutover to Drizzle Kit tooling

Move CMS SQL to drizzle/migrations, drop prisma packages/schema, wire drizzle-kit scripts, and regenerate schema names from src/db/schema.ts.

Co-authored-by: Cursor <[email protected]>

drizzle.config.ts

@@ -1,13 +1,16 @@
 import "dotenv/config";
 import { defineConfig } from "drizzle-kit";
 
-// The schema is generated by scripts/generate-drizzle-schema.mjs from
-// prisma/schema.prisma + live DB introspection. This DB is shared live with the
-// Arcturus emulator, so we NEVER run `drizzle-kit migrate`/`push` against it —
-// CMS-only schema changes stay in prisma/migrations/*.sql via `pnpm db:migrate`.
+// Schema source of truth for the query builder: src/db/schema.ts
+// (regenerated via `pnpm db:schema:generate` from the previous schema + live DB).
+//
+// This DB is shared with the Arcturus emulator — NEVER run `drizzle-kit migrate`
+// or `push` against it. CMS DDL stays in drizzle/migrations/*.sql applied by
+// `pnpm db:migrate`. Use `pnpm db:generate` only for draft SQL under drizzle/drafts/.
 export default defineConfig({
 	dialect: "mysql",
 	schema: "./src/db/schema.ts",
+	out: "./drizzle/drafts",
 	dbCredentials: {
 		url: process.env.DATABASE_URL ?? "",
 	},