Vintage Royal Navy ship cat triptych

{
  "type": "Retro Illustration Educational Tri-Panel Poster",
  "theme": "The true historical facts about the Royal Navy's ship cat",
  "overall_style": "The warm, brownish-brown hand-drawn storybook engraving style features highly detailed cross-hatching, an aged parchment background, dark wood interior, nautical items, a whimsical yet realistic depiction of a tabby cat's anatomy, and museum-style printing.",
  "title_banner": "{argument name=\"poster title\" default=\"Real and strange\"}",
  "layout": {
    "format": "A wide, horizontal poster with three equally sized border panels at the top and a long, rectangular information plaque at the bottom.",
    "panel_count": 3,
    "top_panels": [
      {
        "label": "1. Full-time crew",
        "position": "left",
        "scene": "A proud tabby ship's cat, wearing a Royal Navy-style captain's hat, sits at a narrow wooden table in the cabin, holding a white quill pen and displaying a parchment crew list. On the table are a mug bearing the HMS AMETHYST logo and an anchor, brass binoculars, an ink bottle marked INK, coins, ropes, and nautical tools; a porthole serves as the backdrop. A plaque on the wall reads: Loyalty, Courage, and Professionalism. The parchment title reads: HMS AMETHYST Crew List, below which are handwritten crew names and ranks."
      },
      {
        "label": "2. Outstanding Contributions",
        "position": "middle",
        "scene": "The same tabby cat wearing a sailor's cap sits regally in a wooden storeroom, surrounded by barrels, hanging frying pans, lanterns, shelves, and warm lighting. The cat raises one paw, as if directing or blessing a group of ship mice. Seven mice are clearly visible in the scene: one stands beside the cat holding a small white flag, two sit on the shelf behind the cat, one looks up in the lower left corner, one is directly below in the foreground, one is in the lower right foreground, and a small mouse is near the flag bearer. The atmosphere is both humorous and solemn."
      },
      {
        "label": "3. Deserved rest",
        "position": "right",
        "scene": "A tabby cat sleeps curled up in a naval officer's cap on a table covered with maps, in the moonlight-drenched captain's cabin. A warm brass lantern glows to the right, and outside the window is a deep blue night sky and a full moon. Framed paintings of sailboats and nautical decorations hang on the walls. In the background, a sleeping naval officer's face is obscured by brown squares. Near the cat is a small medal or label that reads \"DICKIN MEDAL 1949\"."
      }
    ],
    "bottom_caption": {
      "position": "Full-width parchment strip below the panel",
      "text": "{argument name=\"fact caption\" default=\"Fact #3: Cats officially served on Royal Navy ships until 1975. Simon of HMS Amethyst survived combat, boosting crew morale and being awarded the Animal Medal, equivalent to the Victoria Cross.\"}",
      "decoration": "It features anchor icons at both ends and a delicate decorative border."
    }
  },
  "subject": {
    "animal": "{argument name=\"main animal\" default=\"Brown tabby cat\"}",
    "name": "{argument name=\"cat name\" default=\"Simon of HMS Amethyst\"}",
    "costume": "Royal Navy officer's cap with gold badge and dark naval trim",
    "expression_progression": "Panel 1 shows authority and pride, Panel 2 shows solemnity and majesty, and Panel 3 shows calmness and weariness."
  },
  "color_palette": "Antique cream-colored parchment, walnut brown, brass gold, ink black, navy blue accents, warm lantern orange, and soft moonlight blue.",
  "rendering_instructions": "Make all the text look like it's printed or handwritten on parchment labels, accurately preserve the three numbered panel labels, ensure the cat's character design is consistent across all panels, emphasize the fascinating historical quirks and naval realism, and add subtle paper textures, rounded black panel borders, and the worn look of antique posters."
}