Каркас системы настроек (docs/features/settings) и фича TeleCart Pulse
с heartbeat (docs/features/telecart-pulse); спека синхронизирована с opt-in.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Introduce docs/features/ with an index (conventions + feature registry),
a per-feature template, and a filled cart example. Reference the structure
from the root CLAUDE.md so context can be restored per feature on demand.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
