docs: align model references with actual agents (Opus 4.7) (#511) #6171

Job	Run time
build-and-check	3m 6s
test-integration-packages/internal	1m 12s
test-integration-packages/agent-runtime	42s
test-integration-cli	53s
test-integration-sdk	1m 26s
test-integration-packages/billing	1m 5s
test-packages/billing	45s
test-integration-web	52s
test-.agents	47s
test-sdk	46s
test-packages/agent-runtime	48s
test-common	49s
test-web	1m 1s
test-cli	56s
test-packages/internal	1m 0s
test-integration-common	48s
	16m 56s

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