@startuml deep-dive-workflow
skinparam defaultFontName Arial
skinparam backgroundColor #FAFAFA

actor Developer
participant "deep-dive\nSkill" as SKILL
participant "Input Source" as SRC
participant "report-template.md" as TMPL

Developer -> SKILL : "deep dive into X"\n(files / URL / topic / text)
SKILL -> SRC : read files / fetch URL / analyze text
SRC --> SKILL : raw material

SKILL -> TMPL : load 11-section template
SKILL -> SKILL : analyze architecture,\ndata model, flows, APIs

loop each relevant section
  SKILL -> SKILL : generate PlantUML diagram\n(component / ER / sequence)
  SKILL -> SKILL : fill section content
end

SKILL --> Developer : deep-dive-{subject}.md
@enduml