Kann ich Miro vibecoden?

Build me a personal whiteboard app to replace Miro. Requirements:

- Do not write a canvas engine from scratch: build on the tldraw SDK (React +
  Vite). It already does shapes, sticky notes, connectors, and selection well.
- A local web app on localhost:4900 with a board picker: named boards with
  thumbnails, create, rename, delete.
- Each board autosaves its tldraw snapshot JSON to SQLite (better-sqlite3 behind a
  small Express API) 2 seconds after the last change, keeping the previous 20
  snapshots as undo insurance.
- A toolbar button exports the current board as PNG and SVG to
  ~/Whiteboards/<board-name>.png.
- A template row on the new-board screen seeded from JSON files in templates/:
  retro grid, brainstorm columns, weekly plan.
- Works fully offline, binds to localhost, no accounts, no telemetry.
- Optional: share-with-one-person mode over my private network using tldraw's sync
  package, two cursors max. Skip it if it costs more than an hour.
- Out of scope: workshop facilitation tools (timers, voting), integrations, and
  performance tuning for 50-person boards. This is my thinking canvas, not a venue.
- README: dev and build commands, and where board data lives on disk.

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