{
  "id": "overview",
  "n": 0,
  "title": "pdfdrill - drill-depth escalation over a shared sidecar",
  "prompt": "SHARED STYLE: muted sage green / olive / warm ochre on cream paper, charcoal ink linework. One titled card as the subject, with a persistent horizontal 'memory rail' (the sidecar) along the bottom edge that visibly grows from panel to panel. Panel 0 of 7, left-to-right pipeline; same aspect ratio across the whole series.\n\nThe overview card: four escalation levels L0..L3 side by side over one shared sidecar rail that every command writes facts into, so a higher level never repeats a lower one. Above them, the PDF enters at the left; mathpix (keyed) and ocr (keyless) produce the lines.json that the offline L3 path consumes; the competing readings feed L3 as scored provenance columns.",
  "canvas": {
    "pad": 22,
    "gap": 16,
    "group_pad": 12,
    "label_band": 32,
    "aspect": 1.8351254480286738
  },
  "palette": {
    "paper": {
      "fill": "#eef0e6",
      "stroke": "#6b7363",
      "node": "#f8f9f4"
    },
    "sage": {
      "fill": "#dde5d5",
      "stroke": "#6f7d63",
      "node": "#eff3ec"
    },
    "olive": {
      "fill": "#e5e7cf",
      "stroke": "#7a7f2c",
      "node": "#f3f4e7"
    },
    "ochre": {
      "fill": "#efe2c6",
      "stroke": "#a8801f",
      "node": "#f9f2e1"
    },
    "ink": {
      "fill": "#dcdcd4",
      "stroke": "#3a3a35",
      "node": "#eeeee9"
    },
    "rail": {
      "fill": "#d9d3c0",
      "stroke": "#4a463c",
      "node": "#e9e4d4"
    },
    "flag": {
      "fill": "#f2ddc0",
      "stroke": "#b06a1a",
      "node": "#fbf1df"
    }
  },
  "root": {
    "kind": "col",
    "gap": 22,
    "children": [
      {
        "kind": "row",
        "gap": 26,
        "children": [
          {
            "kind": "node",
            "id": "pdf",
            "label": "PDF file",
            "tone": "paper"
          },
          {
            "kind": "group",
            "id": "prov",
            "title": "competing readings",
            "sub": "scored provenance columns",
            "tone": "sage",
            "dir": "col",
            "gap": 8,
            "children": [
              {
                "kind": "row",
                "gap": 10,
                "children": [
                  {
                    "kind": "node",
                    "id": "snip",
                    "label": "snip",
                    "tone": "sage",
                    "mono": true
                  },
                  {
                    "kind": "node",
                    "id": "vision",
                    "label": "vision",
                    "tone": "sage",
                    "mono": true
                  },
                  {
                    "kind": "node",
                    "id": "latex",
                    "label": "latex",
                    "tone": "sage",
                    "mono": true
                  }
                ]
              }
            ]
          },
          {
            "kind": "col",
            "gap": 10,
            "children": [
              {
                "kind": "row",
                "gap": 12,
                "children": [
                  {
                    "kind": "node",
                    "id": "mathpix",
                    "label": "mathpix",
                    "tone": "paper",
                    "mono": true,
                    "sub": "keyed"
                  },
                  {
                    "kind": "node",
                    "id": "ocr",
                    "label": "ocr",
                    "tone": "paper",
                    "mono": true,
                    "sub": "keyless"
                  }
                ]
              },
              {
                "kind": "node",
                "id": "linesjson",
                "label": "lines.json",
                "tone": "rail",
                "mono": true
              }
            ]
          }
        ],
        "align": "end"
      },
      {
        "kind": "row",
        "gap": 26,
        "children": [
          {
            "kind": "group",
            "id": "l0",
            "title": "L0 - free",
            "sub": "approx. 40-60 ms",
            "tone": "olive",
            "dir": "col",
            "gap": 8,
            "children": [
              {
                "kind": "node",
                "id": "size",
                "label": "size",
                "tone": "olive",
                "mono": true
              },
              {
                "kind": "node",
                "id": "pdfinfo",
                "label": "pdfinfo",
                "tone": "olive",
                "mono": true
              },
              {
                "kind": "node",
                "id": "links",
                "label": "links",
                "tone": "olive",
                "mono": true
              },
              {
                "kind": "node",
                "id": "dests",
                "label": "dests",
                "tone": "olive",
                "mono": true
              }
            ]
          },
          {
            "kind": "group",
            "id": "l1",
            "title": "L1 - cheap",
            "sub": "cached, milliseconds",
            "tone": "sage",
            "dir": "col",
            "gap": 8,
            "children": [
              {
                "kind": "node",
                "id": "abstract",
                "label": "abstract",
                "tone": "sage",
                "mono": true
              },
              {
                "kind": "node",
                "id": "toc",
                "label": "toc",
                "tone": "sage",
                "mono": true
              },
              {
                "kind": "node",
                "id": "fonts",
                "label": "fonts",
                "tone": "sage",
                "mono": true
              }
            ]
          },
          {
            "kind": "group",
            "id": "l2",
            "title": "L2 - work",
            "sub": "approx. 1 s",
            "tone": "ochre",
            "dir": "col",
            "gap": 8,
            "children": [
              {
                "kind": "node",
                "id": "md",
                "label": "md",
                "tone": "ochre",
                "mono": true
              },
              {
                "kind": "node",
                "id": "pagen",
                "label": "page N",
                "tone": "ochre",
                "mono": true
              },
              {
                "kind": "node",
                "id": "drill",
                "label": "drill",
                "tone": "ochre",
                "mono": true
              }
            ]
          },
          {
            "kind": "group",
            "id": "l3",
            "title": "L3 - model",
            "sub": "offline, from lines.json",
            "tone": "ink",
            "dir": "col",
            "gap": 8,
            "children": [
              {
                "kind": "node",
                "id": "model",
                "label": "model",
                "tone": "ink",
                "mono": true
              },
              {
                "kind": "node",
                "id": "compare",
                "label": "compare",
                "tone": "ink",
                "mono": true
              },
              {
                "kind": "node",
                "id": "report",
                "label": "report",
                "tone": "ink",
                "mono": true
              },
              {
                "kind": "node",
                "id": "tiddlers",
                "label": "tiddlers",
                "tone": "ink",
                "mono": true
              }
            ]
          }
        ],
        "align": "start"
      },
      {
        "kind": "node",
        "id": "rail",
        "label": "sidecar",
        "tone": "rail",
        "sub": "every command records facts here; a re-run answers instantly"
      }
    ]
  },
  "edges": [
    {
      "id": "e1",
      "from": "pdf",
      "to": "l0",
      "kind": "feed",
      "from_side": "bottom",
      "to_side": "top"
    },
    {
      "id": "e2",
      "from": "mathpix",
      "to": "linesjson",
      "kind": "feed"
    },
    {
      "id": "e3",
      "from": "ocr",
      "to": "linesjson",
      "kind": "fallback"
    },
    {
      "id": "e4",
      "from": "linesjson",
      "to": "l3",
      "kind": "feed",
      "from_side": "bottom",
      "to_side": "top"
    },
    {
      "id": "e5",
      "from": "prov",
      "to": "l3",
      "kind": "feed"
    },
    {
      "id": "e6",
      "from": "l0",
      "to": "l1",
      "kind": "escalate",
      "from_side": "right",
      "to_side": "left"
    },
    {
      "id": "e7",
      "from": "l1",
      "to": "l2",
      "kind": "escalate",
      "from_side": "right",
      "to_side": "left"
    },
    {
      "id": "e8",
      "from": "l2",
      "to": "l3",
      "kind": "escalate",
      "from_side": "right",
      "to_side": "left"
    },
    {
      "id": "e9",
      "from": "l0",
      "to": "rail",
      "kind": "store",
      "from_side": "bottom",
      "to_side": "top"
    },
    {
      "id": "e10",
      "from": "l1",
      "to": "rail",
      "kind": "store",
      "from_side": "bottom",
      "to_side": "top"
    },
    {
      "id": "e11",
      "from": "l2",
      "to": "rail",
      "kind": "store",
      "from_side": "bottom",
      "to_side": "top"
    },
    {
      "id": "e12",
      "from": "l3",
      "to": "rail",
      "kind": "store",
      "from_side": "bottom",
      "to_side": "top"
    }
  ]
}