Merge pull request #94 from input-output-hk/mgalazyn/adr-rpc-direct-access
ADR-019: Node Kernel Access for cardano-rpc
ADR-019: Node Kernel Access for cardano-rpc
Correct the N2C alternatives section: N2C does expose chain following via LocalChainSync, but not random block-by-point lookup (BlockFetch is N2N only). Clarify that ReadTx/ReadData require a block indexer. Add consensus chain selection reference.
Remove service pattern code example, dependency inversion section, and record-of-callbacks language. The ADR now describes what capabilities cardano-rpc needs without prescribing the wiring pattern.