Link the released 2026-07-28 spec and point migrators at /v1/ #3770

Job	Run time
checks / pre-commit	53s
checks / readme-snippets	12s
checks / docs	53s
checks / test (3.10, lowest-direct, windows-latest)	1m 33s
checks / test (3.10, locked, ubuntu-latest)	1m 29s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 26s
checks / test (3.10, locked, windows-latest)	2m 16s
checks / test (3.11, lowest-direct, windows-latest)	2m 15s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 26s
checks / test (3.12, lowest-direct, windows-latest)	2m 8s
checks / test (3.13, locked, windows-latest)	2m 4s
checks / test (3.13, lowest-direct, windows-latest)	2m 10s
checks / test (3.11, locked, ubuntu-latest)	1m 23s
checks / test (3.11, locked, windows-latest)	1m 55s
checks / test (3.12, locked, windows-latest)	1m 59s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 10s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 15s
checks / test (3.14, locked, windows-latest)	1m 49s
checks / test (3.14, lowest-direct, windows-latest)	1m 46s
checks / test (3.14, locked, ubuntu-latest)	1m 13s
checks / test (3.12, locked, ubuntu-latest)	1m 34s
checks / test (3.13, locked, ubuntu-latest)	1m 16s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 24s
all-green	5s
	35m 34s

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