doc: add portable agentic instructions (#86) #146

Job	Run time
test / fuzz-test / Fuzz matrix	32s
test / Lint	33s
test / fuzz-test / fuzz test (github.com/go-openapi/jsonreference, FuzzParse)	2m 13s
test / Unit tests (macos-latest, oldstable)	28s
test / Unit tests (windows-latest, stable)	1m 1s
test / Unit tests (windows-latest, oldstable)	1m 9s
test / Unit tests (macos-latest, stable)	25s
test / Unit tests (ubuntu-latest, stable)	43s
test / Unit tests (ubuntu-latest, oldstable)	22s
test / collect-reports / collect test reports	16s
test / tests completed	2s
test / collect-coverage / collect test coverage	17s
	8m 1s

Provide feedback