Kann ich Sunsama vibecoden?

Build me a solo daily planner like Sunsama. Requirements:

- A local web app on localhost:4400: Node + Express + better-sqlite3, server-rendered
  with a little vanilla JS for drag and drop. No frontend framework.
- Today view, two columns: my Google Calendar events (read-only via googleapis, OAuth
  creds in .env) as a timeline, and today's task list beside it.
- Tasks have title, estimate in minutes, project tag, done flag. Quick-add box at the
  top, plus a backlog panel of unplanned tasks I can drag into today.
- Header shows planned minutes vs a daily budget from config (default 6h) and turns
  red when I overplan.
- A /shutdown page for the end of day: walks each unfinished task, one keystroke to
  roll to tomorrow, send to backlog, or drop, then shows planned vs actual.
- Keep per-day history in SQLite so a /week page can show the last 7 days of planned
  vs done.
- Calendar is read-only: never write events. Out of scope: task-tool integrations
  (Todoist, Trello, email), mobile apps, and two-way calendar sync.
- No accounts, no telemetry, everything local except the Google API calls.
- README: Google Cloud console steps for the OAuth client · budget an hour, that
  console is the worst part of this build.

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