T3 Wave 5 (T31). New user-facing guide at docs/user/custom-modifiers.md
covering:
- Opening the editor + 3-column workspace
- All 15 effect primitives (state / mechanic / advanced) with one
example per primitive
- Composing primitives (simple boosted-pawn → medium shield → complex
aura king)
- Saving + loading from the local library
- Using a custom modifier in a profile (panel kind dropdown)
- Multi-profile stacking (solo-only T3 limitation noted)
- Aura semantics (Chebyshev distance, recompute cadence)
- Limits and DoS guards (50 primitives, depth 3, 20 per library, 10
per multiplayer room)
- T3 limitations called out inline (trigger primitives seed but don't
yet fire; AuraContributions written but not yet consumed)
