serverAssets approach didn't bundle the template into the Nitro
output (no .output-staging/server/chunks/raw/ dir, no asset-storage
mount in nitro.mjs). Logs confirm: '[Magic] Profile template missing
in serverAssets'.
Drop serverAssets entirely. Inline the template (~2KB) as a TS
constant in backend/server/utils/magic-profile-template.ts. Build-
robust, no FS/storage dependency at runtime. Canonical source of
truth remains ops/mdm/rebreak-mac-dns-filter.mobileconfig — keep in
sync manually until/unless we add a codegen step.