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reference-image nano mode + strict palettes + pixel palette-snap + hard no-partB line

d4a7eea1f8ccca4a81d3905c26cb823823308cdb · 2026-07-22 12:56:27 -0700 · Steve Abrams

Files touched

Diff

commit d4a7eea1f8ccca4a81d3905c26cb823823308cdb
Author: Steve Abrams <steve@designerwallcoverings.com>
Date:   Wed Jul 22 12:56:27 2026 -0700

    reference-image nano mode + strict palettes + pixel palette-snap + hard no-partB line
---
 data/briefs.json                                   |  82 +++++----
 data/designs.json                                  | 189 +--------------------
 output/archive-v1/arcade-memory-v1-nano.png        | Bin 1605832 -> 1217855 bytes
 output/archive-v1/arcade-memory-v4-nano.png        | Bin 0 -> 1197801 bytes
 output/archive-v1/arcade-memory-v6-nano.png        | Bin 0 -> 1373934 bytes
 output/archive-v1/astral-tiger-v1-nano.png         | Bin 1824802 -> 1751533 bytes
 output/archive-v1/astral-tiger-v2-sdxl.png         | Bin 1847020 -> 1943751 bytes
 output/archive-v1/astral-tiger-v3-sdxl.png         | Bin 1866255 -> 1925617 bytes
 .../astral-tiger-v4-nano.png                       | Bin
 .../astral-tiger-v5-nano.png                       | Bin
 .../astral-tiger-v6-nano.png                       | Bin
 output/archive-v1/bodega-cats-v1-nano.png          | Bin 1958994 -> 1411724 bytes
 output/archive-v1/bodega-cats-v4-nano.png          | Bin 0 -> 1587259 bytes
 output/archive-v1/bodega-cats-v5-nano.png          | Bin 0 -> 1632934 bytes
 output/archive-v1/bodega-cats-v6-nano.png          | Bin 0 -> 1063047 bytes
 output/archive-v1/campfire-toile-v1-nano.png       | Bin 2280932 -> 2176705 bytes
 output/archive-v1/campfire-toile-v4-nano.png       | Bin 0 -> 2070144 bytes
 output/archive-v1/campfire-toile-v5-nano.png       | Bin 0 -> 2068631 bytes
 output/archive-v1/campfire-toile-v6-nano.png       | Bin 0 -> 2101155 bytes
 output/archive-v1/circle-fields-v1-nano.png        | Bin 1936327 -> 1785265 bytes
 output/archive-v1/circle-fields-v5-nano.png        | Bin 0 -> 1799332 bytes
 output/archive-v1/circle-fields-v6-nano.png        | Bin 0 -> 1768388 bytes
 output/archive-v1/daily-dose-v1-nano.png           | Bin 1324267 -> 1496358 bytes
 output/archive-v1/daily-dose-v4-nano.png           | Bin 0 -> 1201829 bytes
 output/archive-v1/daily-dose-v5-nano.png           | Bin 0 -> 1135709 bytes
 output/archive-v1/daily-dose-v6-nano.png           | Bin 0 -> 971822 bytes
 output/archive-v1/desert-choir-v1-nano.png         | Bin 1907079 -> 1818423 bytes
 output/archive-v1/desert-choir-v2-sdxl.png         | Bin 1784605 -> 1856033 bytes
 output/archive-v1/desert-choir-v3-sdxl.png         | Bin 1881228 -> 1935586 bytes
 .../desert-choir-v4-nano.png                       | Bin
 .../desert-choir-v5-nano.png                       | Bin
 .../desert-choir-v6-nano.png                       | Bin
 output/archive-v1/dream-clouds-v1-nano.png         | Bin 1654641 -> 1052316 bytes
 output/archive-v1/dream-clouds-v4-nano.png         | Bin 0 -> 1039947 bytes
 output/archive-v1/dream-clouds-v5-nano.png         | Bin 0 -> 1116990 bytes
 output/archive-v1/dream-clouds-v6-nano.png         | Bin 0 -> 951622 bytes
 output/archive-v1/fungi-skyline-v1-nano.png        | Bin 2477245 -> 2464798 bytes
 output/archive-v1/fungi-skyline-v4-nano.png        | Bin 0 -> 2297609 bytes
 output/archive-v1/fungi-skyline-v5-nano.png        | Bin 0 -> 2297043 bytes
 output/archive-v1/fungi-skyline-v6-nano.png        | Bin 0 -> 2402102 bytes
 output/archive-v1/galaxy-bots-v1-nano.png          | Bin 1882506 -> 2064404 bytes
 output/archive-v1/galaxy-bots-v2-sdxl.png          | Bin 1686980 -> 1554248 bytes
 output/archive-v1/galaxy-bots-v3-sdxl.png          | Bin 1665602 -> 1674150 bytes
 .../galaxy-bots-v4-nano.png                        | Bin
 .../galaxy-bots-v5-nano.png                        | Bin
 .../galaxy-bots-v6-nano.png                        | Bin
 output/archive-v1/golden-pineapple-v1-nano.png     | Bin 1133160 -> 1892618 bytes
 output/archive-v1/golden-pineapple-v4-nano.png     | Bin 0 -> 1506783 bytes
 output/archive-v1/golden-pineapple-v5-nano.png     | Bin 0 -> 1626594 bytes
 output/archive-v1/golden-pineapple-v6-nano.png     | Bin 0 -> 1901662 bytes
 output/archive-v1/herbarium-press-v1-nano.png      | Bin 2128198 -> 1813137 bytes
 output/archive-v1/herbarium-press-v2-sdxl.png      | Bin 1893437 -> 1971358 bytes
 output/archive-v1/herbarium-press-v3-sdxl.png      | Bin 1872857 -> 1934840 bytes
 .../herbarium-press-v4-nano.png                    | Bin
 .../herbarium-press-v5-nano.png                    | Bin
 .../herbarium-press-v6-nano.png                    | Bin
 output/archive-v1/lagoon-legends-v1-nano.png       | Bin 2050119 -> 1827756 bytes
 output/archive-v1/lagoon-legends-v4-nano.png       | Bin 0 -> 1666934 bytes
 output/archive-v1/lagoon-legends-v5-nano.png       | Bin 0 -> 1572685 bytes
 output/archive-v1/lagoon-legends-v6-nano.png       | Bin 0 -> 1144499 bytes
 output/archive-v1/lost-continent-v1-nano.png       | Bin 2187020 -> 1611906 bytes
 output/archive-v1/lost-continent-v4-nano.png       | Bin 0 -> 1657490 bytes
 output/archive-v1/lost-continent-v5-nano.png       | Bin 0 -> 2081562 bytes
 output/archive-v1/lost-continent-v6-nano.png       | Bin 0 -> 1492516 bytes
 output/archive-v1/midnight-frequency-v1-nano.png   | Bin 1588693 -> 1691949 bytes
 output/archive-v1/midnight-frequency-v2-sdxl.png   | Bin 1636885 -> 1574769 bytes
 output/archive-v1/midnight-frequency-v3-sdxl.png   | Bin 1659091 -> 1547181 bytes
 .../midnight-frequency-v4-nano.png                 | Bin
 .../midnight-frequency-v5-nano.png                 | Bin
 .../midnight-frequency-v6-nano.png                 | Bin
 output/archive-v1/mod-orbit-v1-nano.png            | Bin 1136885 -> 1445655 bytes
 output/archive-v1/mod-orbit-v4-nano.png            | Bin 0 -> 1697883 bytes
 output/archive-v1/mod-orbit-v5-nano.png            | Bin 0 -> 1346407 bytes
 output/archive-v1/mod-orbit-v6-nano.png            | Bin 0 -> 1752991 bytes
 output/archive-v1/monstera-bungalow-v1-nano.png    | Bin 2258457 -> 1538437 bytes
 output/archive-v1/monstera-bungalow-v4-nano.png    | Bin 0 -> 1762963 bytes
 output/archive-v1/monstera-bungalow-v5-nano.png    | Bin 0 -> 1745306 bytes
 output/archive-v1/monstera-bungalow-v6-nano.png    | Bin 0 -> 1985957 bytes
 output/archive-v1/moonrise-ikat-v1-nano.png        | Bin 2051042 -> 2082129 bytes
 .../moonrise-ikat-v4-nano.png                      | Bin
 .../moonrise-ikat-v5-nano.png                      | Bin
 output/archive-v1/moonrise-ikat-v6-nano.png        | Bin 0 -> 2039580 bytes
 output/archive-v1/night-jungle-v1-nano.png         | Bin 1784607 -> 2308687 bytes
 output/archive-v1/night-jungle-v4-nano.png         | Bin 0 -> 2146248 bytes
 output/archive-v1/night-jungle-v5-nano.png         | Bin 0 -> 2244914 bytes
 output/archive-v1/night-jungle-v6-nano.png         | Bin 0 -> 2314201 bytes
 output/archive-v1/painted-feathers-v1-nano.png     | Bin 2070436 -> 1734757 bytes
 output/archive-v1/painted-feathers-v4-nano.png     | Bin 0 -> 2227273 bytes
 output/archive-v1/painted-feathers-v5-nano.png     | Bin 0 -> 1690322 bytes
 output/archive-v1/painted-feathers-v6-nano.png     | Bin 0 -> 2089672 bytes
 output/archive-v1/plumbline-v1-nano.png            | Bin 1713013 -> 1326815 bytes
 output/archive-v1/plumbline-v4-nano.png            | Bin 0 -> 1651018 bytes
 output/archive-v1/plumbline-v5-nano.png            | Bin 0 -> 1785352 bytes
 output/archive-v1/plumbline-v6-nano.png            | Bin 0 -> 1250216 bytes
 output/archive-v1/ray-shadow-v1-nano.png           | Bin 1759352 -> 1952799 bytes
 .../{designs => archive-v1}/ray-shadow-v4-nano.png | Bin
 .../{designs => archive-v1}/ray-shadow-v5-nano.png | Bin
 output/archive-v1/regatta-day-v1-nano.png          | Bin 1804923 -> 1402593 bytes
 output/archive-v1/regatta-day-v4-nano.png          | Bin 0 -> 1108446 bytes
 output/archive-v1/regatta-day-v5-nano.png          | Bin 0 -> 1969531 bytes
 output/archive-v1/regatta-day-v6-nano.png          | Bin 0 -> 1788964 bytes
 output/archive-v1/robot-parade-v1-nano.png         | Bin 1579412 -> 1548229 bytes
 output/archive-v1/robot-parade-v2-sdxl.png         | Bin 1837383 -> 1517213 bytes
 output/archive-v1/robot-parade-v3-sdxl.png         | Bin 1643350 -> 1469065 bytes
 .../robot-parade-v4-nano.png                       | Bin
 .../robot-parade-v5-nano.png                       | Bin
 .../robot-parade-v6-nano.png                       | Bin
 output/archive-v1/tidepool-bloom-v1-nano.png       | Bin 2061773 -> 2054399 bytes
 output/archive-v1/tidepool-bloom-v4-nano.png       | Bin 0 -> 1914838 bytes
 output/archive-v1/tidepool-bloom-v5-nano.png       | Bin 0 -> 2035640 bytes
 output/archive-v1/tidepool-bloom-v6-nano.png       | Bin 0 -> 1874741 bytes
 output/designs/astral-tiger-v1-nano.png            | Bin 1751533 -> 0 bytes
 output/designs/astral-tiger-v2-sdxl.png            | Bin 1943751 -> 0 bytes
 output/designs/astral-tiger-v3-sdxl.png            | Bin 1925617 -> 0 bytes
 output/designs/desert-choir-v1-nano.png            | Bin 1818423 -> 0 bytes
 output/designs/galaxy-bots-v1-nano.png             | Bin 2064404 -> 0 bytes
 output/designs/herbarium-press-v1-nano.png         | Bin 1813137 -> 0 bytes
 output/designs/midnight-frequency-v1-nano.png      | Bin 1691949 -> 0 bytes
 output/designs/midnight-frequency-v2-sdxl.png      | Bin 1574769 -> 0 bytes
 output/designs/moonrise-ikat-v1-nano.png           | Bin 2082129 -> 0 bytes
 output/designs/ray-shadow-v1-nano.png              | Bin 1952799 -> 0 bytes
 output/designs/robot-parade-v1-nano.png            | Bin 1548229 -> 0 bytes
 output/test/astral-tiger-test.png                  | Bin 0 -> 162913 bytes
 scripts/__pycache__/batch_gen.cpython-314.pyc      | Bin 0 -> 10150 bytes
 scripts/batch_gen.py                               |  53 ++++--
 scripts/nano_gen.py                                |  17 +-
 scripts/snap_palette.py                            |  47 +++++
 127 files changed, 143 insertions(+), 245 deletions(-)

diff --git a/data/briefs.json b/data/briefs.json
index dbf84a5..d1407f6 100644
--- a/data/briefs.json
+++ b/data/briefs.json
@@ -7,9 +7,8 @@
   "prompt": "seamless repeating wallpaper pattern, folk-art tiger walking among scattered eight-point stars, Scandinavian folk illustration style, charcoal ground with cream and ochre linework, flat screen-print aesthetic, bold simple shapes, 24 inch repeat",
   "palette": [
    "#ffffff",
-   "#2d2d2d",
-   "#7d7d7d",
-   "#d6d6d6",
+   "#272727",
+   "#6a6a6a",
    "#ababab"
   ],
   "scale": "large-scale motif: tiger about 14 inches tall within the 24 inch repeat, stars 2-3 inches"
@@ -21,10 +20,10 @@
   "inspiration": "Analog Nights (theme only)",
   "prompt": "seamless repeating wallpaper pattern, retro cassette tapes boomboxes and synthesizers, 1980s graphic illustration, flat two-color screen print, midnight navy ground with electric silver linework, evenly scattered motifs, 24 inch repeat",
   "palette": [
+   "#616065",
    "#afafb1",
    "#d4d4d6",
-   "#616065",
-   "#828286"
+   "#79797d"
   ],
   "scale": "medium-scale motifs about 5 inches each, evenly scattered"
  },
@@ -37,7 +36,8 @@
   "palette": [
    "#ffffff",
    "#b3b3b3",
-   "#e3e3e3"
+   "#e3e3e3",
+   "#cacaca"
   ],
   "scale": "large-scale motifs: robots 10-12 inches tall, bold and dominant"
  },
@@ -51,7 +51,7 @@
    "#424242",
    "#dbdbdb",
    "#bababa",
-   "#797979"
+   "#626262"
   ],
   "scale": "medium-scale motifs 4-6 inches, generously scattered scene"
  },
@@ -65,8 +65,7 @@
    "#ffffff",
    "#fdd73d",
    "#c2ac65",
-   "#f3eabc",
-   "#e5d581"
+   "#f7e88b"
   ],
   "scale": "medium-scale pressed flowers 5-8 inches, airy arrangement"
  },
@@ -77,8 +76,9 @@
   "inspiration": "Cactus Spirit (theme only)",
   "prompt": "seamless repeating wallpaper pattern, oversized saguaro aloe and agave cacti with desert blossoms and small desert tortoises resting between them, graphic southwest style, blush rose-gold ground with deep green and terracotta, bold flat shapes, 24 inch repeat",
   "palette": [
+   "#f7eee7",
    "#edb8a2",
-   "#f7eee7"
+   "#efd3c6"
   ],
   "scale": "oversized large-scale cacti 16-20 inches tall spanning most of the repeat"
  },
@@ -89,8 +89,9 @@
   "inspiration": "Sea Ray (theme only)",
   "prompt": "seamless repeating wallpaper pattern, abstract watercolor spotted pattern inspired by eagle ray skin, organic white spots on rosewood wine ground, painterly wash texture, sophisticated animal print abstraction, 24 inch repeat",
   "palette": [
-   "#e8cec2",
-   "#f8ede8"
+   "#f9f0ec",
+   "#e5c9bd",
+   "#d3b6aa"
   ],
   "scale": "small-scale dense allover spots 1-2 inches, tight organic texture"
  },
@@ -102,7 +103,7 @@
   "prompt": "seamless repeating wallpaper pattern, moon phases rendered as woven ikat shapes, blurred-edge textile texture, stone grey ground with silver white and slate moons, rhythmic vertical arrangement, 24 inch repeat",
   "palette": [
    "#ece5de",
-   "#fcfcfc"
+   "#faf9f8"
   ],
   "scale": "medium-scale moons 3-4 inches in rhythmic vertical rows"
  },
@@ -115,9 +116,8 @@
   "palette": [
    "#ffffff",
    "#2f2d2e",
-   "#c4c4c4",
-   "#797878",
-   "#abaaaa"
+   "#a2a2a2",
+   "#797878"
   ],
   "scale": "large-scale dense jungle motifs 8-12 inches, immersive full coverage"
  },
@@ -129,10 +129,9 @@
   "prompt": "seamless repeating wallpaper pattern, single elegant pineapples evenly spaced in offset grid, graphic flat illustration, charcoal ground with golden ochre fruit and green crowns, hotel-chic minimal, 24 inch repeat",
   "palette": [
    "#ffffff",
-   "#262626",
-   "#c0c0c0",
-   "#999999",
-   "#6c6c6c"
+   "#adadad",
+   "#e2e2e2",
+   "#262626"
   ],
   "scale": "medium-scale pineapples about 5 inches in a roomy offset grid"
  },
@@ -144,8 +143,8 @@
   "prompt": "seamless repeating wallpaper pattern, monstera deliciosa leaves growing from clearly represented woody stems and branches, tropical bungalow style, warm cream ground with single-tone deep green leaves, flat graphic print, no birds no butterflies no bananas, 24 inch repeat",
   "palette": [
    "#84cf63",
-   "#fdfdef",
-   "#d0e175",
+   "#fdfef2",
+   "#d9e785",
    "#0a9059"
   ],
   "scale": "large-scale leaves 10-14 inches, statement scale"
@@ -159,7 +158,7 @@
   "palette": [
    "#fefefe",
    "#d1b684",
-   "#e2d4b5"
+   "#e9e0cb"
   ],
   "scale": "medium-scale feathers 6-8 inches in flowing vertical bands"
  },
@@ -171,7 +170,8 @@
   "prompt": "seamless repeating wallpaper pattern, abstract sea anemone tentacle clusters, textural organic dots and fronds radiating, soft zephyr blue-grey palette with blush centers, subtle sophisticated texture, 24 inch repeat",
   "palette": [
    "#dae5e9",
-   "#f8fbfc"
+   "#f5f8fa",
+   "#e4ebef"
   ],
   "scale": "small-scale dense texture, clusters 2-3 inches"
  },
@@ -196,7 +196,7 @@
   "prompt": "seamless repeating wallpaper pattern, jurassic dinosaurs among volcanoes ferns and fossils with tree trunks clearly represented, kids adventure illustration, mineral grey-green ground with bone cream and rust, flat hand-printed style, no birds, 24 inch repeat",
   "palette": [
    "#ffffff",
-   "#bae3dd",
+   "#cdcfd2",
    "#8897a3"
   ],
   "scale": "medium-scale dinosaurs 5-7 inches, playful spacing"
@@ -209,7 +209,7 @@
   "prompt": "seamless repeating wallpaper pattern, micro-scale geometric of connected pipe elbows and joints, modern minimal line work, aqua lines on soft white ground, precise architectural grid, 24 inch repeat",
   "palette": [
    "#ffffff",
-   "#8ecbd6",
+   "#8bcbd6",
    "#cbe7eb"
   ],
   "scale": "micro-scale geometric, elements under 1 inch, fine dense grid"
@@ -234,8 +234,8 @@
   "inspiration": "Mushroom City (theme only)",
   "prompt": "seamless repeating wallpaper pattern, whimsical city skyline made of mushrooms of fluctuating heights with tiny windows and doors, trippy botanical illustration, botanical green ground with cream coral and brown fungi, 24 inch repeat",
   "palette": [
-   "#e4f6fe",
    "#92acab",
+   "#e4f6fe",
    "#c9dddf"
   ],
   "scale": "medium-to-large mushrooms of varying heights 4-10 inches, skyline rhythm"
@@ -249,9 +249,8 @@
   "palette": [
    "#ffffff",
    "#165652",
-   "#4d7e7b",
-   "#91afad",
-   "#739996"
+   "#608c89",
+   "#a3bcba"
   ],
   "scale": "medium-scale boats 5-6 inches, calm even scatter"
  },
@@ -277,8 +276,8 @@
   "prompt": "seamless repeating wallpaper pattern, colorful two-tone medicine capsules floating in playful diagonal rhythm, pop-art graphic style, soft lavender ground with candy-colored capsules, flat crisp print, 24 inch repeat",
   "palette": [
    "#3b363d",
-   "#7d3055",
-   "#185f4f",
+   "#6b3151",
+   "#0e6254",
    "#655a43"
   ],
   "scale": "small-scale capsules about 2 inches in diagonal rhythm"
@@ -290,8 +289,9 @@
   "inspiration": "Crop Circles (theme only)",
   "prompt": "seamless repeating wallpaper pattern, concentric circles of varying sizes overlapping in offset grid, hand-printed geometric, glimmer metallic silver rings on warm white ground, subtle elegant, 24 inch repeat",
   "palette": [
-   "#e1e1e1",
-   "#fcfcfc"
+   "#e9e9e9",
+   "#f8f8f8",
+   "#d5d5d5"
   ],
   "scale": "medium-scale concentric circles 3-6 inches overlapping"
  },
@@ -303,10 +303,9 @@
   "prompt": "seamless repeating wallpaper pattern, toile de jouy of idyllic modern camping scenes, tents canoes campfires pine trees with clearly represented trunks and hikers, single-color charcoal illustration on cream ground, fine engraved linework, no birds, 24 inch repeat",
   "palette": [
    "#ffffff",
-   "#959595",
-   "#e2e2e2",
+   "#818181",
    "#adadad",
-   "#6d6d6d"
+   "#e2e2e2"
   ],
   "scale": "classic toile scale: vignette scenes 6-8 inches"
  },
@@ -317,9 +316,9 @@
   "inspiration": "Clouds / Loveclouds (theme only)",
   "prompt": "seamless repeating wallpaper pattern, simple graphic puffy clouds with occasional small hearts drifting between, modern nursery style, storm grey ground with white clouds and blush hearts, flat minimal print, 24 inch repeat",
   "palette": [
-   "#ccd7d9",
-   "#b6b7b9",
+   "#cbd5d8",
    "#f4f4f4",
+   "#b6b7b9",
    "#818892"
   ],
   "scale": "medium-scale clouds 4-6 inches, calm even spacing"
@@ -332,9 +331,8 @@
   "prompt": "seamless repeating wallpaper pattern, charming city bodega cats sitting and stretching among tiny storefront awnings and fire hydrants, NYC illustration style, slate grey ground with cream charcoal and mustard accents, flat print, no birds, 24 inch repeat",
   "palette": [
    "#f3f3f3",
-   "#acb3bd",
-   "#58646b",
-   "#7d888f"
+   "#6d7980",
+   "#c6cbd0"
   ],
   "scale": "small-to-medium motifs 3-4 inches, city-scatter layout"
  }
diff --git a/data/designs.json b/data/designs.json
index 4f7def5..1f948f2 100644
--- a/data/designs.json
+++ b/data/designs.json
@@ -6,38 +6,7 @@
   "description": "Star Tiger (theme only \u2014 original artwork)",
   "size": "24\" x 25\"",
   "created_at": "2026-07-22T19:18:28.830309+00:00",
-  "variants": [
-   {
-    "file": "astral-tiger-v1-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:39:59.959671+00:00"
-   },
-   {
-    "file": "astral-tiger-v4-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:40:08.378642+00:00"
-   },
-   {
-    "file": "astral-tiger-v5-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:40:17.533057+00:00"
-   },
-   {
-    "file": "astral-tiger-v6-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:40:25.588100+00:00"
-   },
-   {
-    "file": "astral-tiger-v2-sdxl.png",
-    "engine": "local-sdxl",
-    "created_at": "2026-07-22T19:41:07.987115+00:00"
-   },
-   {
-    "file": "astral-tiger-v3-sdxl.png",
-    "engine": "local-sdxl",
-    "created_at": "2026-07-22T19:42:20.216084+00:00"
-   }
-  ],
+  "variants": [],
   "reference": {
    "file": "ref-astral-tiger.jpg",
    "title": "Star Tiger Charcoal"
@@ -50,33 +19,7 @@
   "description": "Analog Nights (theme only)",
   "size": "24\" x 25\"",
   "created_at": "2026-07-22T19:18:36.892674+00:00",
-  "variants": [
-   {
-    "file": "midnight-frequency-v1-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:40:33.542498+00:00"
-   },
-   {
-    "file": "midnight-frequency-v4-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:40:42.135303+00:00"
-   },
-   {
-    "file": "midnight-frequency-v5-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:40:49.728701+00:00"
-   },
-   {
-    "file": "midnight-frequency-v6-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:40:57.779944+00:00"
-   },
-   {
-    "file": "midnight-frequency-v2-sdxl.png",
-    "engine": "local-sdxl",
-    "created_at": "2026-07-22T19:43:32.473283+00:00"
-   }
-  ],
+  "variants": [],
   "reference": {
    "file": "ref-midnight-frequency.jpg",
    "title": "Analog Nights Thunder"
@@ -89,28 +32,7 @@
   "description": "Big Robots (theme only)",
   "size": "24\" x 25\"",
   "created_at": "2026-07-22T19:18:44.703698+00:00",
-  "variants": [
-   {
-    "file": "robot-parade-v1-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:41:05.813810+00:00"
-   },
-   {
-    "file": "robot-parade-v4-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:41:15.384332+00:00"
-   },
-   {
-    "file": "robot-parade-v5-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:41:24.062583+00:00"
-   },
-   {
-    "file": "robot-parade-v6-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:41:32.688923+00:00"
-   }
-  ],
+  "variants": [],
   "reference": {
    "file": "ref-robot-parade.jpg",
    "title": "Big Robots Tin"
@@ -123,28 +45,7 @@
   "description": "Astrobots (theme only)",
   "size": "24\" x 25\"",
   "created_at": "2026-07-22T19:18:53.231918+00:00",
-  "variants": [
-   {
-    "file": "galaxy-bots-v1-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:41:40.212473+00:00"
-   },
-   {
-    "file": "galaxy-bots-v4-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:41:48.585951+00:00"
-   },
-   {
-    "file": "galaxy-bots-v5-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:41:57.162486+00:00"
-   },
-   {
-    "file": "galaxy-bots-v6-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:42:05.593861+00:00"
-   }
-  ],
+  "variants": [],
   "reference": {
    "file": "ref-galaxy-bots.jpg",
    "title": "Astrobots Thunder"
@@ -157,28 +58,7 @@
   "description": "Herbario family (theme only)",
   "size": "24\" x 25\"",
   "created_at": "2026-07-22T19:19:01.485722+00:00",
-  "variants": [
-   {
-    "file": "herbarium-press-v1-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:42:13.777998+00:00"
-   },
-   {
-    "file": "herbarium-press-v4-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:42:22.686065+00:00"
-   },
-   {
-    "file": "herbarium-press-v5-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:42:30.718909+00:00"
-   },
-   {
-    "file": "herbarium-press-v6-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:42:38.559434+00:00"
-   }
-  ],
+  "variants": [],
   "reference": {
    "file": "ref-herbarium-press.jpg",
    "title": "Herbario Canary"
@@ -191,28 +71,7 @@
   "description": "Cactus Spirit (theme only)",
   "size": "24\" x 25\"",
   "created_at": "2026-07-22T19:19:08.811454+00:00",
-  "variants": [
-   {
-    "file": "desert-choir-v1-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:42:46.424516+00:00"
-   },
-   {
-    "file": "desert-choir-v4-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:42:54.630567+00:00"
-   },
-   {
-    "file": "desert-choir-v5-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:43:02.588990+00:00"
-   },
-   {
-    "file": "desert-choir-v6-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:43:10.541427+00:00"
-   }
-  ],
+  "variants": [],
   "reference": {
    "file": "ref-desert-choir.jpg",
    "title": "Cactus Spirit Rosegold"
@@ -225,23 +84,7 @@
   "description": "Sea Ray (theme only)",
   "size": "24\" x 25\"",
   "created_at": "2026-07-22T19:19:16.192537+00:00",
-  "variants": [
-   {
-    "file": "ray-shadow-v1-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:43:18.515301+00:00"
-   },
-   {
-    "file": "ray-shadow-v4-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:43:27.849372+00:00"
-   },
-   {
-    "file": "ray-shadow-v5-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:43:36.594039+00:00"
-   }
-  ],
+  "variants": [],
   "reference": {
    "file": "ref-ray-shadow.jpg",
    "title": "Sea Ray Rosewood"
@@ -254,23 +97,7 @@
   "description": "Earthlight (theme only)",
   "size": "24\" x 25\"",
   "created_at": "2026-07-22T19:19:24.429045+00:00",
-  "variants": [
-   {
-    "file": "moonrise-ikat-v1-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:43:52.501452+00:00"
-   },
-   {
-    "file": "moonrise-ikat-v4-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:44:00.894923+00:00"
-   },
-   {
-    "file": "moonrise-ikat-v5-nano.png",
-    "engine": "nano-banana",
-    "created_at": "2026-07-22T19:44:09.216129+00:00"
-   }
-  ],
+  "variants": [],
   "reference": {
    "file": "ref-moonrise-ikat.jpg",
    "title": "Earthlight Ashlar"
diff --git a/output/archive-v1/arcade-memory-v1-nano.png b/output/archive-v1/arcade-memory-v1-nano.png
index 997be60..ef1727a 100644
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similarity index 100%
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diff --git a/scripts/__pycache__/batch_gen.cpython-314.pyc b/scripts/__pycache__/batch_gen.cpython-314.pyc
new file mode 100644
index 0000000..2c0fadb
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diff --git a/scripts/batch_gen.py b/scripts/batch_gen.py
index 6334edf..41c1a8b 100644
--- a/scripts/batch_gen.py
+++ b/scripts/batch_gen.py
@@ -33,20 +33,29 @@ def hexname(h):
     shade = "pale " if l > 190 else "deep " if l < 90 else ""
     return shade + hue
 
+HARD_NEG = ("HARD RULE: never include birds, butterflies, bananas, banana pods, "
+            "or grapes anywhere in the design.")
+
 def full_prompt(brief, engine, variation=""):
-    p = brief["prompt"]
-    pal = brief.get("palette")
-    if pal:
-        if engine == "nano":
-            p += ("; palette strictly limited to these exact colors, matching a "
-                  "reference colorway: " + ", ".join(pal))
-        else:
-            names = []
-            for h in pal:
-                n = hexname(h)
-                if n not in names:
-                    names.append(n)
-            p += "; limited color palette of only: " + ", ".join(names)
+    pal = brief.get("palette", [])
+    if engine == "nano":
+        # reference-image mode: the attached original drives scale/density/colors
+        p = (f"The attached image is a reference wallpaper pattern. Create a completely "
+             f"ORIGINAL seamless repeating wallpaper design that matches the reference's "
+             f"motif SCALE, packing DENSITY, layout rhythm, flat print style, and uses "
+             f"EXACTLY and ONLY the reference's colors ({', '.join(pal)} — no other colors, "
+             f"no gradients, flat screen-print inks only). Do NOT copy any motif from the "
+             f"reference. Draw DIFFERENT characters instead: {brief['prompt']}. "
+             f"{HARD_NEG}")
+        if variation:
+            p += " Variation: " + variation
+        return p
+    names = []
+    for h in pal:
+        n = hexname(h)
+        if n not in names:
+            names.append(n)
+    p = brief["prompt"] + "; flat screen print using ONLY these few colors: " + ", ".join(names)
     if brief.get("scale"):
         p += "; motif scale: " + brief["scale"]
     if variation:
@@ -55,9 +64,9 @@ def full_prompt(brief, engine, variation=""):
 
 NANO_VARIATIONS = {
     "v1": "",
-    "v4": "alternate take: different individual characters and poses, same style and layout logic",
-    "v5": "alternate take: different composition arrangement, same motifs family and style",
-    "v6": "alternate take: refined minimal interpretation, slightly sparser layout, same style",
+    "v4": "different individual characters and poses, same style and layout logic",
+    "v5": "different composition arrangement, same motif family and style",
+    "v6": "refined minimal interpretation, same scale and style",
 }
 
 def load_designs():
@@ -99,8 +108,14 @@ def main():
                 if os.path.exists(path):
                     save_variant(b, "nano-banana", fname); continue
                 print(f"[nano {ver}] {b['id']}")
-                if run([sys.executable, os.path.join(SCRIPTS, "nano_gen.py"),
-                        full_prompt(b, "nano", variation), path], 180):
+                ref = os.path.join(ROOT, "output", "refs", f"ref-{b['id']}.jpg")
+                cmd = [sys.executable, os.path.join(SCRIPTS, "nano_gen.py"),
+                       full_prompt(b, "nano", variation), path]
+                if os.path.exists(ref):
+                    cmd.append(ref)
+                if run(cmd, 200):
+                    subprocess.run([sys.executable, os.path.join(SCRIPTS, "snap_palette.py"),
+                                    path, b["id"]], capture_output=True)
                     save_variant(b, "nano-banana", fname)
                     nano_done += 1
                 time.sleep(2)
@@ -116,6 +131,8 @@ def main():
                 print(f"[sdxl seed {seed}] {b['id']}")
                 if run([sys.executable, os.path.join(SCRIPTS, "comfy_gen.py"),
                         full_prompt(b, "sdxl"), str(seed), path], 700):
+                    subprocess.run([sys.executable, os.path.join(SCRIPTS, "snap_palette.py"),
+                                    path, b["id"]], capture_output=True)
                     save_variant(b, "local-sdxl", fname)
         print("sdxl complete")
 
diff --git a/scripts/nano_gen.py b/scripts/nano_gen.py
index 93d0dc6..0a73c48 100644
--- a/scripts/nano_gen.py
+++ b/scripts/nano_gen.py
@@ -1,8 +1,10 @@
 #!/usr/bin/env python3
 """Generate one image via Gemini 2.5 Flash Image ("nano banana").
 
-Usage: GEMINI_API_KEY=... nano_gen.py "<prompt>" <outfile.png>
-Cost: ~$0.039 per image (1290 output tokens @ $30/1M).
+Usage: GEMINI_API_KEY=... nano_gen.py "<prompt>" <outfile.png> [reference.jpg]
+With a reference image, the model matches its scale/density/colors while
+drawing ORIGINAL motifs per the prompt.
+Cost: ~$0.039 per image.
 """
 import base64, json, os, sys, urllib.request
 
@@ -13,14 +15,21 @@ URL = (f"https://generativelanguage.googleapis.com/v1beta/models/"
 
 def main():
     prompt, outfile = sys.argv[1], sys.argv[2]
+    ref = sys.argv[3] if len(sys.argv) > 3 else None
+    parts = []
+    if ref:
+        mime = "image/png" if ref.endswith(".png") else "image/jpeg"
+        parts.append({"inline_data": {"mime_type": mime,
+                      "data": base64.b64encode(open(ref, "rb").read()).decode()}})
+    parts.append({"text": prompt})
     body = {
-        "contents": [{"parts": [{"text": prompt}]}],
+        "contents": [{"parts": parts}],
         "generationConfig": {"responseModalities": ["IMAGE"],
                              "imageConfig": {"aspectRatio": "1:1"}},
     }
     req = urllib.request.Request(URL, data=json.dumps(body).encode(),
                                  headers={"Content-Type": "application/json"})
-    with urllib.request.urlopen(req, timeout=120) as r:
+    with urllib.request.urlopen(req, timeout=180) as r:
         resp = json.load(r)
     for part in resp["candidates"][0]["content"]["parts"]:
         if "inlineData" in part:
diff --git a/scripts/snap_palette.py b/scripts/snap_palette.py
new file mode 100644
index 0000000..7938d42
--- /dev/null
+++ b/scripts/snap_palette.py
@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+"""Snap every pixel of a generated image to the design's exact reference palette.
+
+Guarantees the output contains ONLY the original colorway's colors.
+Usage: snap_palette.py <image.png> <design_id>   (or --all to sweep output/designs)
+$0 local.
+"""
+import json, os, sys
+from PIL import Image
+
+ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+def load_palettes():
+    briefs = json.load(open(os.path.join(ROOT, "data", "briefs.json")))
+    return {b["id"]: [tuple(int(h[i:i+2], 16) for i in (1, 3, 5))
+                      for h in b.get("palette", [])] for b in briefs}
+
+def snap(path, colors):
+    if not colors:
+        return
+    im = Image.open(path).convert("RGB")
+    # palette-image trick: PIL maps every pixel to nearest palette entry in C
+    pal_img = Image.new("P", (1, 1))
+    flat = [c for rgb in colors for c in rgb]
+    pal_img.putpalette(flat + flat[:3] * (256 - len(colors)))
+    im = im.quantize(palette=pal_img, dither=Image.NONE).convert("RGB")
+    im.save(path)
+
+def main():
+    palettes = load_palettes()
+    if sys.argv[1] == "--all":
+        outdir = os.path.join(ROOT, "output", "designs")
+        n = 0
+        for f in os.listdir(outdir):
+            if not f.endswith(".png"):
+                continue
+            did = f.rsplit("-v", 1)[0]
+            if did in palettes:
+                snap(os.path.join(outdir, f), palettes[did])
+                n += 1
+        print(f"snapped {n} images ($0 local)")
+    else:
+        snap(sys.argv[1], palettes[sys.argv[2]])
+        print(f"snapped {sys.argv[1]}")
+
+if __name__ == "__main__":
+    main()

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