docs(claude): agent-os docs are canonical for agentOS-visible behavior

[NathanFlurry]

• Add a CLAUDE.md rule: behavior that reaches users through Agent OS is documented in the agent-os repo's docs (agentos-sdk.dev), so check and update those in the accompanying agent-os change instead of assuming the local website covers it; the local docs remain scoped to the standalone Secure Exec SDK.

[railway-app]

🚅 Environment secure-exec-pr-183 in rivet-frontend has no services deployed.

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🚅 Deployed to the secure-exec-pr-183 environment in secure-exec

Service	Status	Web	Updated (UTC)
secure-exec	😴 Sleeping (View Logs)	Web	Jul 2, 2026 at 2:51 am