Node.js Realtime Event Discovery: Token Trust for Healthtech IoT Control Panels

Realtime event discovery provides observability and trust for Healthtech IoT control panels. Classify the panel's learnable events, bind them to narrow token scopes, and audit state transitions before a browser can request an action. In healthtech, "online" is an observation, not permission. This distinction is the decision rule.

Observability signals are needed to answer critical questions such as what event caused an incident and whether the client was trusted to act at a specific time, such as 3 a.m. Realtime event discovery should focus on observability signals, not just documentation. Different devices in a shared workspace have different identities, authority, clocks, and recovery paths.

Event types should be classified into four categories: event type discovery, capability authorization, intent request, and outcome result. Event taxonomy should be kept small enough for review during incidents. Each event should declare its producer, subject, audience, retention, ordering key, and actionability, along with a trust value indicating how much the client can infer.

Signed server observations drive status labels, while browser visibility cannot authorize commands. Discover transitions, not vocabulary. Event envelopes should make unsafe assumptions difficult, with authorization and ordering fields visible. Unknown types must remain renderable and non-actionable to ensure forward compatibility.

Go decode known fields, retain raw type for telemetry, and route a limited set to command handlers. Write the timeline on paper first during review, as screenshots hide ordering. The expected result is a deterministic audit trail with specific sequence numbers, lease expiry, token revocation, duplicate events, sequence gaps, and delayed outcomes.