@startuml Command Execution Sequence
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actor User as U
participant "Assistant Message\n(DOM)" as DOM
participant "Core Monitor" as Monitor
participant "Command Parser" as Parser
participant "Validation Engine" as Validator
participant "Dedupe Store" as Dedupe
participant "Execution Manager" as Executor
participant "Inline Status UI" as UI
participant "Bridge API" as Bridge

U -> DOM : Produces message with YAML block
DOM -> Monitor : observe new/updated message
Monitor -> Monitor : debounce + streaming settle
Monitor -> Parser : extract YAML block
Parser --> Monitor : ParsedCommand
Monitor -> Validator : validate fields and action
Validator --> Monitor : ValidationResult
Monitor -> Dedupe : check de-duplication
Dedupe --> Monitor : isNew?
alt example: true or duplicate
  Monitor -> UI : mark as processed (skipped)
  return
else valid and new
  Monitor -> UI : show "Ready" (runnable)
  Monitor -> Executor : enqueue/execute command
  Executor -> UI : state = executing
  Executor -> Bridge : POST action with bridge key
  Bridge --> Executor : response (success/failure)
  Executor -> UI : show result + Run Again button
  Executor -> Dedupe : record execution (ttl 30d)
end

@enduml