Add limited Freebuff DeepSeek access #6607

Job	Run time
build-and-check	3m 6s
test-integration-packages/billing	1m 15s
test-integration-packages/internal	1m 39s
test-integration-packages/agent-runtime	50s
test-integration-cli	39s
test-packages/agent-runtime	46s
test-integration-common	39s
test-integration-sdk	1m 15s
test-packages/billing	53s
test-.agents	40s
test-sdk	54s
test-web	52s
test-common	44s
test-cli	58s
test-integration-web	43s
test-packages/internal	48s
	16m 41s

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