Issue #70: NCA 15K (grid=9, states=9, G4 entropy)

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Task

Implement NCA (Neural Circuit Analysis) for 15K steps.

Config

• Grid = 9
• States = 9
• G4 entropy = [1.5, 2.3]

Acceptance Criteria

• NCA implementation for 15K steps
• Grid=9, states=9
• G4 entropy constraints [1.5, 2.3]
• Save results to experiments/nca/15k/

Refs

• EXP-001: Trinity physics

Commit

"feat(nca): implement NCA 15K (grid=9, states=9, G4 entropy)"
Ref: EXP-001

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Part of: 🏆 EPIC: Parameter Golf Submission — Trinity + GF16