docs: add notes at top of page, update REAMDE #2077

Job	Run time
change-detection / Identify source changes	5s
rr-tests / Action	24s
rr-tests / Run cog on README	16s
rr-tests / Run pylint	14s
rr-tests / Check Python 3.10 on macos-latest	1m 2s
rr-tests / Check Python 3.10 on macos-15-intel	1m 8s
rr-tests / Check Python 3.12 on macos-latest	31s
rr-tests / Check Python 3.12 on windows-latest	44s
rr-tests / Check Python 3.12 on ubuntu-latest	34s
rr-tests / Check Python 3.10 on ubuntu-latest	30s
rr-tests / Check Python 3.14 on ubuntu-latest	32s
rr-tests / Check Python 3.10 on windows-latest	1m 23s
rr-tests / Check Python 3.14 on macos-latest	42s
rr-tests / Check Python 3.14 on macos-15-intel	1m 0s
rr-tests / Check Python 3.14 on windows-latest	54s
rr-tests / Check Python 3.12 on macos-15-intel	1m 10s
cookie	0s
pass	4s
	11m 13s

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