flowchart TB
  subgraph M["Developer machine"]
    H["CASAN_HOME"]
    CUR["current<br/>symlink hoặc junction"]
    VER["versions/&lt;version&gt;"]
    CLI["bin/casan"]
    HAR["packages/casan-harness"]
    DEV["packages/casan-devkit"]

    H --> CUR --> VER
    H --> CLI
    VER --> HAR
    VER --> DEV
  end

  INIT["casan init"] --> CFG
  CLI --> INIT
  DEV --> INIT

  subgraph P["Existing project"]
    CFG[".casan/<br/>config.json<br/>version.lock<br/>agentic.env<br/>init-manifest.json"]
    BOOT[".casan/casan-hook.py"]
    STATE[".specify/<br/>logs/<br/>state/<br/>.gitignore"]
    CLIENTS["Client config khi được chọn<br/>.claude/settings.json<br/>.codex/hooks.json<br/>.vscode/extensions.json"]
    L2["Level 2 only<br/>.gitea/workflows/casan-ci.yml<br/>apps/&lt;project-id&gt;/domain/"]
    OWNED["Project-owned<br/>source, agents, skills,<br/>commands, hooks và CI khác"]
  end

  INIT --> BOOT
  INIT --> STATE
  INIT --> CLIENTS
  INIT -. "chỉ khi --level devkit" .-> L2
  INIT -. "không thay đổi" .-> OWNED
  CFG --> BOOT
  HAR -. "runtime policy" .-> BOOT