feat(agentos): discovery endpoint, OTLP gateway, cak_ ingest auth #31

Job	Run time
build (computeragent-server, examples/Dockerfile.harness, examples/computeragent-server.ts, harness)	4m 50s
build (harness-server, examples/Dockerfile.harness, examples/harness-server.ts, harness)	4m 54s
build (agentos-spa, agentos/Dockerfile, spa)	29s
build (agentos-server, packages/agentos-server/Dockerfile)	1m 26s
	11m 39s

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