Maintain Bot Read Model from Robot Output Events

[DakotaCondos]

As a system component,
I want a Function App to consume robot-output events from Event Hub and update Cosmos DB,
so that the system has a current readable representation of the simulated bot network.

Acceptance Criteria

• Given the simulator publishes a robot-output event
  When the Function App receives the event
  Then it identifies the event type, bot ID, timestamp, schema version, and payload.

• Given the event is valid
  When the Function App processes it
  Then it updates the corresponding bot document in the Cosmos DB Bots container.

• Given the event is missing required metadata
  When the Function App attempts to process it
  Then the event is rejected, logged, or moved to an error-handling path.

• Given the event has already been processed
  When the Function App receives the same event again
  Then the Function App does not create duplicate or incorrect updates.

• Given the Function App successfully updates Cosmos DB
  When processing completes
  Then the bot read model reflects the latest accepted event data.