Best Practices

> A dispatcher checked against 10 malformed and valid JSON-RPC requests selects the exact correct error code every time — 1 parse error, 3 invalid requests, 1 method-not-found, 2 invalid-params, 1 internal error, and 2 successes. A paginator walking 47 items in pages of 10 reproduces the original list exactly: 47 items, same order, zero duplicates, zero omissions, proven by comparing sets and sequences, not by eyeballing five pages of output.