Relocated SYSTEM_REVIEW.md and PROJECT_PLAN_ENERGY_EVOLUTION.md from
backend/docs/legacy to project-level docs/legacy. Added docs/README.md
indexing all documentation including ARCHITECTURE.md and GAME_RULES.md.
Add long-term design consideration for forking the RPG campaign as a
standalone offline experience.
ARCHITECTURE.md:
- Add 'Offline Standalone Fork' section explaining:
- Why offline support matters (single-player RPG focus)
- Architecture principles for fork compatibility
- Core engine independence requirements
- Potential package structures and distribution options
- What stays vs what goes in a fork
AGENTS.md:
- Add 'Core Engine Independence' section with:
- Rules for keeping app/core/ decoupled
- Import boundary examples (allowed vs forbidden)
- Link to full architecture docs
This ensures all contributors understand the design constraint:
the game engine must remain completely independent of network,
database, and authentication concerns.
- Add PROJECT_PLAN.md with 7-phase development roadmap
- Add CLAUDE.md with AI agent coding guidelines
- Add docs/ARCHITECTURE.md with technical deep-dive
- Add docs/GAME_RULES.md template for home rule definitions
- Create directory structure for frontend, backend, shared
