# Cerebro — System Context (C4 Level 1)

vars: {
  d2-config: @nord-config
}

...@nord-classes

developer: "Developer\n[Person]" {
  class: person
}

cortex: "Cortex\n[Data Store]" {
  class: system
}

cerebro: "Cerebro\n[Software System]" {
  class: cerebro
}

opencode: "OpenCode\n[AI Agent]" {
  class: system
}

pi: "Pi\n[AI Agent]" {
  class: system
}

skill: "Skill\n[Cerebro Bridge]" {
  class: system
}

projects: "Projects\n[Git + Filesystem]" {
  class: system
}

# Connections
developer -> cortex: "reads/writes notes"
developer -> cerebro: "invokes CLI"
developer -> cerebro: "interacts TUI"
developer -> opencode: "uses"
developer -> pi: "uses"

cerebro -> projects: "scrapes metadata"
cerebro -> cortex: "builds"

# Agent → Cerebro paths
opencode -> cerebro: "MCP calls"
opencode -> skill: "uses"
pi -> skill: "uses"
skill -> cerebro: "invokes CLI"

# Legend — D2 built-in legend
vars: {
  d2-legend: {
    style.fill: "#2E3440"
    style.stroke: "#4C566A"

    person: {
      label: "Person"
      shape: square
      style.fill: "#5E81AC"
      style.stroke-width: 0
    }
    software: {
      label: "Software System"
      shape: square
      style.fill: "#81A1C1"
      style.stroke-width: 0
    }
    external: {
      label: "External System"
      shape: square
      style.fill: "#4C566A"
      style.stroke-width: 0
    }
  }
}