docs: enrich root README with full project plan details
- Add project plan context: team members, executive summary, schedule, risk management
- Add project scope, deliverables, and classification table with symptoms
- Add bibliography/references section from project plan
- Centered header with logo, emoji-section navigation
- Cleaner structure: Tentang → Tim → Ringkasan → Cakupan → Jadwal → Risiko → Arsitektur → Tech Stack → Memulai → Dokumentasi → Pustaka
Co-Authored-By: Claude <noreply@anthropic.com>
