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]>

pnpm-workspace.yaml

@@ -3,9 +3,6 @@
 # pnpm v11 vervanger voor onlyBuiltDependencies
 allowBuilds:
   esbuild: true
-  prisma: true
-  "@prisma/client": true
-  "@prisma/engines": true
   sharp: true
   "@parcel/watcher": true
   "@swc/core": true