docs(01): create phase 1 plans -- walking skeleton + portal shell
Three plans for Foundation & Portal Shell phase:
- 01-01: Monorepo scaffold, Docker Compose with 3-network segmentation, NestJS API, Next.js app, PostgreSQL
- 01-02: Design tokens (yellow #ffed00 primary), i18n (DE/EN), theme switching, responsive portal layout
- 01-03: Visual verification checkpoint for human approval
Includes SKELETON.md documenting architectural decisions for subsequent phases.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
schalli
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