[ksprptr]

What's in it

• Env variable tables are gone — they duplicated the .env.example files and drifted from them.
  One line points at those files instead.
• Fixed a stale Google redirect URI — the Drive setup steps still said
  <API URL>/api/v1/google-auth/google/callback, which stopped working in v2.0.0. Following the
  readme would have left Drive unconnectable.
• Node 24+ / pnpm 11+ in the prerequisites.
• Dropped the Configuration section, the infrastructure credentials table, and the prose around
  features, Docker and the OAuth scope.
• Kept the three notes that each prevent a real failure: Docker VM memory, publishing the Google
  app, and serving over HTTPS.