Add DeepSeek V4 model docs #6972

Job	Run time
compute-version	4s
build-docs / build-docs	1m 14s
build-artifacts / frontend-build	13s
build-artifacts / code-lint	45s
build-artifacts / runner-test (macos-latest)	1m 0s
build-artifacts / gateway-build	13s
build-artifacts / runner-test (ubuntu-latest)	1m 9s
build-artifacts / python-build	20s
build-artifacts / generate-json-schema	17s
build-artifacts / python-test (macos-latest, 3.12)	3m 7s
build-artifacts / python-test (macos-latest, 3.11)	3m 45s
build-artifacts / python-test (ubuntu-latest, 3.11)	5m 11s
build-artifacts / python-test (ubuntu-latest, 3.10)	5m 20s
build-artifacts / python-test (macos-latest, 3.13)	2m 26s
build-artifacts / python-test (windows-latest, 3.10)	1m 49s
build-artifacts / python-test (windows-latest, 3.12)	2m 14s
build-artifacts / python-test (macos-latest, 3.10)	2m 13s
build-artifacts / python-test (windows-latest, 3.11)	2m 0s
build-artifacts / python-test (ubuntu-latest, 3.13)	5m 7s
build-artifacts / python-test (windows-latest, 3.13)	2m 28s
build-artifacts / python-test (ubuntu-latest, 3.12)	5m 9s
build-artifacts / runner-compile (ubuntu-24.04, linux, amd64)	27s
build-artifacts / runner-compile (ubuntu-24.04-arm, linux, arm64)	26s
upload-pre-pypi-artifacts / upload-pre-pypi-artifacts	20s
upload-post-pypi-artifacts / upload-post-pypi-artifacts	15s
	47m 32s

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