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┌──────────────────────────────────────────────────────────────┐
│        CRYSTAL–MYCELIAL ENGINE — SUBSTRATE LAYERS DIAGRAM    │
└──────────────────────────────────────────────────────────────┘
 
 
LAYER STACK
-----------
 
Biological Layer
    ↓
Hybrid Layer
    ↓
Mineral Layer
 
 
BIOLOGICAL LAYER
----------------
- hyphal channels
- routing geometry
- biological pulses
- moisture‑driven growth
 
Operators:
- P.trace_extend
- G.nutrient_gradient
- M.route_memory
 
 
HYBRID LAYER
------------
- mineral precursor infiltration
- resonance alignment
- hybrid memory transfer
- dual‑substrate coherence
 
Operators:
- S.channel_fill
- HybridOps.resonance_bridge
- HybridOps.memory_transfer
 
 
MINERAL LAYER
-------------
- crystal lattice propagation
- domain formation
- impurity band memory
- resonance‑locked geometry
 
Operators:
- P.front_propagate
- M.domain_memory
- S.substrate_swap
 
 
ENVELOPE SNAPSHOT
-----------------
Biological: moisture 0.55–0.65  
Hybrid: ion saturation 0.65–0.75  
Mineral: supersaturation ≥ 0.85  
 
 
END OF SUBSTRATE LAYERS DIAGRAM