Function encodeZigbeeNWKGPFrame

encodeZigbeeNWKGPFrame(
    header: ZigbeeNWKGPHeader,
    payload: ZigbeeNWKGPPayload,
    decryptKey: Buffer,
    macSource64: bigint | undefined,
): Buffer
14-0563-19 Green Power, 9.3 (Green Power security processing)

SPEC COMPLIANCE NOTES:
- ✅ Generates MIC and performs CCM* encryption for FULLENCR/FULL levels per spec
- ✅ Preserves payload ordering ahead of MIC bytes as required by GP sink behaviour
- ⚠️ Expects caller to preconfigure frameControlExt/securityFrameCounter correctly for nonce derivation DEVICE SCOPE: Green Power proxies, Green Power sinks
Parameters
- header: ZigbeeNWKGPHeader
- payload: ZigbeeNWKGPPayload
- decryptKey: Buffer
- macSource64: bigint | undefined
Returns Buffer
- Defined in src/zigbee/zigbee-nwkgp.ts:539