Kann ich CineSend vibecoden?

Build me a watermarked private screener site for footage I own: my own film,
a rough cut for producers, a festival submission I control. This is the
deliberately low-stakes floor of CineSend, never a substitute for it when
someone else's unreleased master is involved. Requirements:

- Node + Express + better-sqlite3 on a VPS, media in Cloudflare R2, hls.js for
  playback. Server-rendered pages, no frontend framework.
- I invite viewers by name and email. Each gets a single-use /s/<random-id> link tied
  to that address, with an expiry date and a max view count I set per invite.
- ffmpeg burns the viewer's name, email, and the date into the picture as a semi
  transparent overlay, one encode per viewer, cached in R2 and deleted on expiry. It
  is visible and it is meant to be, deterrence is the entire mechanism.
- Every play logs timestamp, IP, user agent, and how far they watched, shown on an
  /admin page behind basic auth. I can revoke any link instantly.
- Downloads are off, right click is off, and the manifest URL is signed and short
  lived. State plainly in the UI that none of this stops a screen recording.
- SQLite holds invites and the access log, R2 keys and the SMTP credentials come from
  .env. No accounts for viewers, no telemetry, no third party analytics.
- Out of scope: DRM, forensic watermarking, and TV apps. Do not claim to implement
  any of them and do not build a fake watermark that only sounds forensic.
- README: R2 and signed URL setup, per-viewer encode cost and time, and one blunt
  paragraph saying this is deterrence only and must never be used for a title under
  someone else's security requirements.

Antworte mir auf Deutsch. Oberfläche, Kommentare und README auf Deutsch, alle Bezeichner wie Tabellen, Spalten, Variablen, Routen und Dateinamen bleiben Englisch.