Add PILOT_COLLECTION fabric physics constants to peacock_core

[Copilot]

Introduces PILOT_COLLECTION, a typed registry of 5 pilot fabric profiles with physics properties used by the TryOnYou fit engine.

Changes

• api/peacock_core.py — adds PILOT_COLLECTION: dict[str, dict[str, float]] with entries eg0–eg4, each carrying:

  • drapeCoefficient, weightGSM, elasticityPct, recoveryPct, frictionCoefficient

• tests/test_peacock_core.py — adds TestPilotCollection covering entry count, key schema, value types, exact values for eg0 (Silk Haussmann), minimum drape on eg3 (Tech Shell), and maximum elasticity on eg4 (Cashmere Cloud)

PILOT_COLLECTION: dict[str, dict[str, float]] = {
    "eg0": {  # Silk Haussmann
        "drapeCoefficient": 0.85, "weightGSM": 60,
        "elasticityPct": 12, "recoveryPct": 95, "frictionCoefficient": 0.22,
    },
    "eg3": {  # Tech Shell — lowest drape
        "drapeCoefficient": 0.15, "weightGSM": 180,
        "elasticityPct": 2, "recoveryPct": 98, "frictionCoefficient": 0.75,
    },
    # eg1 (Business Elite), eg2 (Velvet Night), eg4 (Cashmere Cloud) …
}

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Project	Deployment	Actions	Updated (UTC)
tryonyou-pilot	Error		Apr 7, 2026 1:49pm