Kann ich Runway vibecoden?

Build me a thin video-generation workbench over hosted models, in place of
Runway. Requirements:

- A local web page on localhost:3300: Node + Express, a prompt box, a model
  picker, and a gallery of past generations.
- Generate via the Replicate API (token in .env) against current open video
  models (Wan/LTX/Hunyuan class). Pick one provider and stick to it; fal.ai
  only if it has a model Replicate lacks.
- Poll the job, download the mp4 to ~/generations/YYYY-MM-DD/, and record
  prompt, model, params, cost, and file path in SQLite (better-sqlite3).
- Image-to-video: upload a still and pass it as the conditioning frame.
- Show a month-to-date spend total computed from per-job cost so usage stays
  honest.
- No accounts, no telemetry; prompts and outputs stay local except the API
  calls themselves.
- Out of scope: editing timelines, inpainting, and anything realtime. Do not
  build model hosting or a job queue beyond simple polling.
- README: where to get the Replicate token, rough dollars per second of video
  on the default model, and a note that this rents models rather than replacing
  Runway, whose frontier video models and compute cannot be rebuilt solo.

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