docs: add tecnichal-data.md — BitcoinPurple technical reference
Complete parameter reference for BTCP node operators and developers: network identity, mainnet/testnet/signet/regtest parameters, address encoding, HD key version bytes, genesis block, consensus & emission schedule, 120-block difficulty adjustment algorithm, soft-fork activation, ElectrumX coin definition and Docker patch, Electrum constants.py reference, checkpoints format, Lightning Network chain identification (chain_hash, BOLT11 HRP, block-time-scaled timeout parameters), and bitcoinpurple.conf annotated configuration
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