Kann ich Outstand vibecoden?

Build me a self-hosted unified posting API to replace Outstand. Requirements:

- Node + Fastify + better-sqlite3, one headless service on localhost:8080.
  No web UI: my own apps are the only consumer, every key in .env.
- One normalized post shape in zod (text, media, targets, scheduledAt,
  idempotencyKey) and one adapter per network mapping it onto that
  platform's payload. Adapters export capabilities, publish, and metrics;
  nothing platform-specific leaks into the core.
- A capability table per adapter (character limit, media count, mime types,
  aspect ratios, max video seconds). POST /posts returns 422 naming which
  target rejected what, before a single network call goes out.
- Ship the three networks that need no app review: Bluesky (@atproto/api),
  Mastodon, Telegram. Adding a fourth must mean writing one adapter file
  and touching nothing else.
- A token-bucket limiter per network seeded with their published limits so
  calls queue instead of returning 429. POST /posts answers 202 with a job
  id and a worker drains the queue.
- Idempotency: replaying a POST with the same idempotencyKey returns the
  original job instead of posting twice, and every target gets its own
  delivery row so partial success is readable.
- GET /posts/:id/analytics folds each platform's metrics into one shape
  (impressions, likes, comments, shares) with null where a network does not
  report a field. Never invent a number to fill a gap.
- An MCP server over stdio exposing create_post, list_accounts, and
  get_analytics so Claude Code posts through it, plus an OpenAPI spec
  generated from the zod schemas at /openapi.json.
- Out of scope: Instagram, TikTok, YouTube, LinkedIn, Pinterest. Each needs
  my own developer app approved by the platform first, a review queue and
  not code. Say that in the README next to the three token setups.

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