Is the minimum fee consensus, just policy, or both?Intuitively, I think minRelayFee is policy while minBlockTxFee is validation, but DEFAULT_MIN_RELAY_TX_FEE is in validation.h while DEFAULT_BLOCK_MIN_TX_FEE is in policy.h.
Source: Is the minimum fee consensus, just policy, or both? (https://bitcoin.stackexchange.com/questions/112841/is-the-minimum-fee-consensus-just-policy-or-both)