docs: README updated to reflect current Klonkt
Removed stale info (Prutter/DMs, WebSocket, src/websocket/, 'no install script', Ocean/Gold palettes, 'not for distribution'). Added: lite mode, scripts/install.sh (VPS), setup wizard, .env table, Circles/Ed25519, correct structure + stack. License = TBD (heading towards AGPL-3.0).
Co-Authored-By: Claude <noreply@…>