# Original illustrations

Two original conceptual illustrations created using the built-in image generation tool. Technical figures specify the actual algorithms. Paths are relative to the book folder.

```json
{
  "tool": "built-in image_gen",
  "generation_requests": 2,
  "illustrations": [
    {
      "id": "partial-failure",
      "path": "assets/archive-islands.png",
      "prompt": "Use case: illustration-story\nAsset type: Conceptual chapter illustration for an illustrated course book, Building a Storage Network, teaching Go and peer-to-peer distributed storage.\nPrimary request: An original wide 3:2 editorial pen-and-ink illustration of a small archipelago of exactly five rocky islands, each with a small archive/storage hut. Tiny paper parcels travel on suspended cables between the islands. One island is dark and disconnected by a visibly broken cable; alternate paths linking the other islands remain intact and active. Communicate partial failure through this visual analogy.\nStyle/medium: Warm, intelligent, playful field-guide engraving. Fine pen lines, expressive hand-drawn crosshatching, generous clean off-white paper. Rich midnight navy ink with selective electric cobalt highlights.\nComposition/framing: Wide 3:2 landscape, slightly elevated viewpoint, all five islands clearly distinct, intact alternate cable paths readable, central composition with breathing room around the edges.\nConstraints: No text, letters, numbers, labels, interface elements, logos or watermark. Do not imitate a specific living artist. This is an evocative conceptual illustration; exact technical mechanics are taught in separate diagrams.",
      "inspection": "1536 \u00d7 1024, 3:2. Five archive islands are visible, one dark with a broken cable. Active alternate routes carry parcels. Navy and cobalt on off-white, no visible text or logos."
    },
    {
      "id": "encrypt-before-distribution",
      "path": "assets/encryption-worktable.png",
      "prompt": "Use case: illustration-story\nAsset type: Conceptual chapter illustration for an illustrated course book, Building a Storage Network, teaching Go and peer-to-peer distributed storage.\nPrimary request: An original wide 3:2 editorial pen-and-ink illustration of an archivist's worktable. A small photograph is being divided into pieces and placed into individual sealed envelopes with small blank index-marker shapes that suggest ordering but contain absolutely no text or numbers. A small locked chest and a key remain together on the trusted near side of the table, beside the photograph. Sealed envelopes leave this trusted preparation area and travel toward several distant archive shelves. Communicate encryption before distribution as a warm physical analogy, with the key remaining at the worktable. No literal technical labels.\nStyle/medium: Warm, intelligent, playful field-guide engraving. Fine pen lines, expressive hand-drawn crosshatching, generous clean off-white paper, coherent with an archipelago chapter illustration in the same book. Rich midnight navy ink with selective electric cobalt highlights and a small amber accent on the key or seal.\nComposition/framing: Wide 3:2 landscape, slightly elevated view of the worktable in the foreground and small distant archive shelves farther back. Photograph pieces and sealing envelopes clearly visible in the trusted preparation area, outgoing sealed envelopes visibly separate from the retained key. Gentle visual flow from preparation to distributed archives.\nConstraints: No text, letters, numbers, labels, interface elements, logos or watermark. Envelopes should be closed once departing the table. Do not imitate a specific living artist. This is an evocative conceptual illustration; exact technical mechanics are taught in separate diagrams.",
      "inspection": "1536 \u00d7 1024, 3:2. Foreground worktable contains cut photograph pieces in open preparation envelopes, blank shape indexing, sealed outgoing envelopes, locked chest and retained amber key. Closed envelopes travel toward distant archive shelves housed on islands. Coherent navy/cobalt engraving, no visible text or labels."
    }
  ]
}
```