Add emergent-systems design guidance to CLAUDE.md

[gradies]

Summary

• Appends a "Design Philosophy: Favor Emergent Systems Over Bespoke Solutions" section to the existing CLAUDE.md on development.
• Names the canonical fundamentals — Domain (not "color"), Mass, Cells (not "biomes", with CellType), Elementals (the single buff/debuff system across vessels + environment), Prisms / Prismscapes (trails are the 1D case; higher-dimensional prism constructions planned), Flora & Fauna, and Vessels.
• Adds a curation process for proposing new fundamentals (name precisely, show reach across ≥3 features, show composition with existing fundamentals, prefer extension, budget the weight) so the set stays minimal-yet-exhaustive.
• 5-step order of preference: use → tune → extend → propose new fundamental → bespoke last resort.
• Requires Claude to stop and ask for explicit permission before "cheating" emergence (e.g. using known fauna placement data to short-circuit prism-attraction behavior).

Test plan

• Confirm the canonical names (Domain, Cells, Elementals, Prismscapes, Flora & Fauna, Vessels, Mass) match the team's terminology.
• Confirm the curation process (reach / composition / extension / weight) is the right bar for admitting a new fundamental.
• Confirm the cheat-vs-emergent example reads correctly for future contributors.
• Confirm this section composes well with the existing guidance above it.

https://claude.ai/code/session_01EUFs4D8aTS9AYNx8WicHMg