[codex] Add server-side Composio managed auth #6754

Job	Run time
build-and-check	2m 55s
test-integration-packages/internal	1m 10s
test-integration-packages/billing	1m 16s
test-integration-web	51s
test-integration-sdk	1m 30s
test-integration-packages/agent-runtime	52s
test-integration-common	49s
test-.agents	43s
test-cli	55s
test-common	50s
test-packages/agent-runtime	45s
test-packages/billing	41s
test-packages/internal	46s
test-sdk	44s
test-integration-cli	41s
test-web	1m 19s
	16m 47s

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