@startuml sdlc-architecture
skinparam componentStyle rectangle
skinparam defaultFontName Arial
skinparam backgroundColor #FAFAFA

package "sdlc Skill" {
  component "SKILL.md\n(instructions)" as SKILL
  component "assets/\nphase-checklist.md" as CHECKLIST
  component "evals/evals.json" as EVALS
}

package "Project Artifacts (specs/)" {
  component "requirements.md" as R
  component "design.md" as D
  component "tasks.md" as T
  component "impl-plan.md" as I
  component "STATUS.md\n(resume point)" as STATUS
  component "crs/CR-N-*.md\n(change requests)" as CR
}

package "Codebase" {
  component "source code" as CODE
  component "tests" as TESTS
}

actor Developer

Developer --> SKILL : describe project / "continue"
SKILL --> R : phase 1
SKILL --> D : phase 2
SKILL --> T : phase 3
SKILL --> I : phase 4
SKILL --> CODE : phase 5
SKILL --> TESTS : phase 6
SKILL --> STATUS : tracks progress
SKILL --> CR : change requests
CHECKLIST ..> SKILL : phase gate rules
@enduml