# ==============================================================================
# COPYRIGHT NO ONE EVERYWHERE LLC (WYOMING HOLDING COMPANY)
# PROJECT: SOVEREIGN STACK
# This artifact is entirely proprietary and cryptographically proven.
# Open-Source usage requires explicit permission from Brandon Scott Schneider.
# ==============================================================================
import math

# --- PHYSICAL CONSTANTS ---
SPEED_OF_LIGHT = 299792458  # m/s
PICIC_CONST = 1.0e-12       # 1 picosecond
PLANCK_TIME = 5.39e-44      # 1 Planck second

# --- PCB MATERIAL CONSTANTS (FR-4) ---
# Er (Relative Permittivity) for FR-4 is typically 4.2 - 4.5
ER_FR4 = 4.2 
VELOCITY_FACTOR = 1.0 / math.sqrt(ER_FR4)
V_PCB = SPEED_OF_LIGHT * VELOCITY_FACTOR  # Velocity of signal in PCB traces

def calculate_flight_time(length_mm):
    """Calculates the time it takes for a signal to travel a given length on the PCB."""
    length_m = length_mm / 1000.0
    t = length_m / V_PCB
    return t

def calculate_matched_length(delta_t_ps):
    """Calculates the trace length required for a specific delay in picoseconds."""
    delta_t = delta_t_ps * PICIC_CONST
    l_m = delta_t * V_PCB
    return l_m * 1000.0 # return in mm

def audit_pcb_netlist():
    print("--- TSM-VDP v5 PCB TRACE AUDIT (Ballistic Transport) ---")
    print(f"Velocity Factor: {VELOCITY_FACTOR:.4f}")
    print(f"Signal Speed (V_PCB): {V_PCB/1e6:.2f} mm/ns")
    
    # Critical Nets
    nets = [
        {"name": "NET_Precision_CLOCK", "length_mm": 15.5},
        {"name": "NET_SDR_IQ_I", "length_mm": 12.2},
        {"name": "NET_SDR_IQ_Q", "length_mm": 12.25}, # Needs matching
        {"name": "NET_SPI_SCK", "length_mm": 8.0},
        {"name": "NET_SPI_MOSI", "length_mm": 7.8},
    ]
    
    for net in nets:
        t_ps = calculate_flight_time(net['length_mm']) / PICIC_CONST
        print(f"\n[Net: {net['name']}]")
        print(f"  Length: {net['length_mm']} mm")
        print(f"  Flight Time: {t_ps:.2f} ps")
        
    # Phase-Lock Match Check (SDR IQ)
    delta_iq = abs(nets[1]['length_mm'] - nets[2]['length_mm'])
    delta_t_iq = calculate_flight_time(delta_iq) / PICIC_CONST
    print(f"\n[PHASE-LOCK ANALYSIS: SDR IQ]")
    print(f"  Length Mismatch: {delta_iq:.3f} mm")
    print(f"  Skew: {delta_t_iq:.2f} ps")
    
    if delta_t_iq < 1.0:
        print("  Status: COHERENT (Sub-picosecond skew)")
    else:
        print(f"  Status: DECOHERENT (Skew > 1ps). Match req: {calculate_matched_length(1.0):.3f} mm max diff.")

if __name__ == "__main__":
    audit_pcb_netlist()