From 5ca79ce3f2d737f45517b2337274d38032fec9de Mon Sep 17 00:00:00 2001
From: jamestagg <james@taggs.com>
Date: Sun, 29 Mar 2026 19:39:54 -0700
Subject: [PATCH] images and pictures

---
 Content/Maps/brain_1774295359.umap            |   3 ++
 Content/Maps/brain_1774297914.umap            |   3 ++
 Content/Maps/brain_1774301478.umap            |   3 ++
 Content/Maps/brain_1774310394.umap            |   3 ++
 Content/Maps/brain_1774311321.umap            |   3 ++
 Content/Maps/brain_1774312767.umap            |   3 ++
 Content/Maps/brain_1774314188.umap            |   3 ++
 Content/Maps/brain_1774315512.umap            |   3 ++
 Content/Maps/brain_1774316272.umap            |   3 ++
 Content/Maps/brain_1774317354.umap            |   3 ++
 Content/Maps/brain_1774318487.umap            |   3 ++
 Content/Maps/brain_1774319584.umap            |   3 ++
 Content/Maps/brain_1774320477.umap            |   3 ++
 Content/Maps/brain_1774321211.umap            |   3 ++
 Content/Maps/brain_1774479280.umap            |   3 ++
 Content/Maps/brain_1774481784.umap            |   3 ++
 Content/Maps/brain_1774482764.umap            |   3 ++
 Content/Maps/brain_1774483963.umap            |   3 ++
 Content/Maps/brain_1774576292.umap            |   3 ++
 Content/Maps/brain_1774578580.umap            |   3 ++
 Content/Maps/brain_1774579118.umap            |   3 ++
 Content/Maps/brain_1774583683.umap            |   3 ++
 Content/Maps/brain_1774587925.umap            |   3 ++
 Content/Maps/brain_1774592421.umap            |   3 ++
 Content/Maps/brain_1774631630.umap            |   3 ++
 Content/Maps/brain_1774632169.umap            |   3 ++
 Content/Maps/brain_1774632847.umap            |   3 ++
 Content/Maps/brain_1774635612.umap            |   3 ++
 Content/Maps/brain_1774644634.umap            |   3 ++
 Content/Maps/brain_1774738738.umap            |   3 ++
 Content/Maps/brain_1774739832.umap            |   3 ++
 Content/Maps/brain_1774754690.umap            |   3 ++
 Content/Maps/brain_1774757707.umap            |   3 ++
 Content/Maps/brain_1774797749.umap            |   3 ++
 Content/Maps/brain_1774799844.umap            |   3 ++
 Content/Maps/brain_1774804072.umap            |   3 ++
 Content/Maps/brain_1774806217.umap            |   3 ++
 Content/Maps/brain_1774809254.umap            |   3 ++
 Content/Maps/brain_1774811086.umap            |   3 ++
 Content/Maps/brain_1774816406.umap            |   3 ++
 Content/Maps/brain_1774822628.umap            |   3 ++
 Content/Maps/brain_1774824180.umap            |   3 ++
 Content/Maps/brain_1774827122.umap            |   3 ++
 Content/Maps/brain_1774829905.umap            |   3 ++
 Content/Maps/brain_1774833376.umap            |   3 ++
 .../{reference.jpeg => lasergirls-neon.jpeg}  |   0
 .../0_Colosseum_-_Rome_111001_(2).jpeg        |   3 ++
 .../38053877275_e51b0ab350_o_Jurasic.jpg      |   3 ++
 .../references/_unfiled/Barringer-1001.jpg    |   3 ++
 ...ati_Symphony_Orchestra02_(36081919384).jpg |   3 ++
 ...ance_Cave_of_the_Underground_River_03.jpeg |   3 ++
 .../_unfiled/Manawaiopuna_Falls.jpg           |   3 ++
 .../_unfiled/STS130_cupola_view1.jpg          |   3 ++
 .../shutterstock_103530782_western.jpg        |   3 ++
 .../architecture/favela-hillside/metadata.md  |  27 ++++++++++
 .../favela-hillside/pexels-3889855-favela.jpg |   3 ++
 .../architecture/gothic-castle/metadata.md    |  27 ++++++++++
 .../pexels-831082-gothic-castle.jpg           |   3 ++
 .../hong-kong-density/metadata.md             |  27 ++++++++++
 .../pexels-3560168-hong-kong.jpg              |   3 ++
 .../architecture/santorini-sunset/metadata.md |  44 ++++++++++++++++
 .../pexels-6110642-santorini.jpg              |   3 ++
 .../pexels-586056-astronaut.jpg               |   3 ++
 .../character/ballet-dancer/metadata.md       |  27 ++++++++++
 .../pexels-17247349-ballerina-stage.jpg       |   3 ++
 .../ballet-dancer/pexels-2188012-ballet.jpg   |   3 ++
 .../character/medieval-knight/metadata.md     |  27 ++++++++++
 .../medieval-knight/pexels-5765853-knight.jpg |   3 ++
 .../pexels-9777909-knight-armor-field.jpg     |   3 ++
 .../pexels-7095073-orchestra.jpg              |   3 ++
 ...ikimedia-cincinnati-symphony-orchestra.jpg |   3 ++
 .../character/penguins-antarctica/metadata.md |  27 ++++++++++
 .../pexels-2078474-penguins.jpg               |   3 ++
 .../references/character/wildlife/metadata.md |  27 ++++++++++
 .../wildlife/pexels-247431-wildlife.jpg       |   3 ++
 ...asa-cassini-titan-sunglint-kraken-mare.jpg |   3 ++
 .../wikimedia-grandmont-colosseum-rome.jpg    |   3 ++
 .../flickr-kaaawa-valley-jurassic-park.jpg    |   3 ++
 ...ikimedia-cyrilfluck-manawaiopuna-falls.jpg |   3 ++
 .../midjourney-v7-pirate-ship-storm.png       |   3 ++
 .../nasa-iss-cupola-earth-view.jpg            |   3 ++
 ...hutterstock-103530782-western-showdown.jpg |   3 ++
 .../references/food/spaghetti/metadata.md     |  10 ++--
 ...e-will-smith-spaghetti.mask.mask.mask.png} |   0
 ...edance-will-smith-spaghetti.mask.mask.png} |   0
 ...=> seedance-will-smith-spaghetti.mask.png} |   0
 ....png => seedance-will-smith-spaghetti.png} |   0
 .../food/street-food-night-market/metadata.md |  27 ++++++++++
 .../pexels-2347311-street-food.jpg            |   3 ++
 ...exels-29531047-tokyo-street-food-night.jpg |   3 ++
 .../references/food/sushi-counter/metadata.md |  27 ++++++++++
 .../sushi-counter/pexels-2098085-sushi.jpg    |   3 ++
 ...ls-15800505-abandoned-factory-interior.jpg |   3 ++
 .../pexels-3329292-abandoned.jpg              |   3 ++
 .../pexels-2733267-cathedral-interior.jpg     |   3 ++
 .../interior/interior-artificial/metadata.md  |  27 ++++++++++
 .../pexels-1571460-restaurant.jpg             |   3 ++
 .../interior-natural-light/metadata.md        |  27 ++++++++++
 .../pexels-1457842-window-light.jpg           |   3 ++
 .../interior/japanese-onsen/metadata.md       |  27 ++++++++++
 .../pexels-3225529-hot-spring-steam.jpg       |   3 ++
 .../japanese-onsen/pexels-3225529-onsen.jpg   |   3 ++
 .../japanese-onsen/pexels-7937410-onsen.jpg   |   3 ++
 .../wikimedia-chris73-nachikatsuura-onsen.jpg |   3 ++
 .../interior/modern-kitchen/metadata.md       |  27 ++++++++++
 .../modern-kitchen/pexels-2724749-kitchen.jpg |   3 ++
 .../references/nature/mountain/metadata.md    |  10 ++--
 ...ference.jpg => mountain-valley-boreal.jpg} |   0
 .../night/campfire-night/metadata.md          |  27 ++++++++++
 .../pexels-1368382-campfire.jpg               |   3 ++
 .../pexels-6623925-campfire-people-night.jpg  |   3 ++
 .../night/city-skyline-night/metadata.md      |  27 ++++++++++
 .../pexels-2603464-city-night.jpg             |   3 ++
 .../pexels-31332741-milky-way-desert.jpg      |   3 ++
 .../night/northern-lights-iceland/metadata.md |  44 ++++++++++++++++
 .../pexels-30173400-aurora-borealis.jpg       |   3 ++
 .../pexels-2670898-starry-night.jpg           |   3 ++
 .../0199b1e2-1c46-427a-8d7d-8ce4048647bb.jpg  |   3 ++
 .../1823f7e7-d28a-4fff-8260-0e10a4ff5858.jpg  |   3 ++
 .../19a5806a-01e4-43e4-839a-7ffc4a251756.jpg  |   3 ++
 .../50b2dcd3-e1d2-4016-81c3-6abd2b3e703d.jpg  |   3 ++
 ...aa4fc0-fd85-45bc-8ea9-471b9f3ed416 (1).jpg |   3 ++
 .../5caa4fc0-fd85-45bc-8ea9-471b9f3ed416.jpg  |   3 ++
 .../639dcaa3-75be-4e6a-baf0-0277e935f07a.jpg  |   3 ++
 .../6a75f7ab-ff1b-418a-9d67-f57b45f4d6a6.jpg  |   3 ++
 .../7d4687a5-a277-4965-80f1-033d909f3a99.jpg  |   3 ++
 .../7e21ecea-2272-4a17-825f-6d7230b2c43a.jpg  |   3 ++
 .../87dbcac6-8bcf-4023-a030-9af2c951e736.jpg  |   3 ++
 .../9db1a0f2-1063-4701-acd2-75eef48b1e59.jpg  |   3 ++
 .../b5ce90e7-1f87-4edc-a8b2-c11e776abfb3.jpg  |   3 ++
 .../bb2d087f-be03-41ef-8435-8945433ee515.jpg  |   3 ++
 .../c052ac2f-09e1-4d6a-93db-c68090d71fb3.jpg  |   3 ++
 .../ccce0854-ac1d-4c04-86f3-6f90e846cab4.jpg  |   3 ++
 .../e1fca282-27d3-448c-8d64-9618c3007838.jpg  |   3 ++
 .../ea771041-26c9-417c-b403-3134d8492407.jpg  |   3 ++
 .../fa01814d-5353-4b14-983c-de2d5f4a45b8.jpg  |   3 ++
 ...reference.jpg => alysson-lab-portrait.jpg} |   0
 .../{reference.jpg => dbrin-xian-museum.jpg}  |   0
 ...ce.webp => distracted-boyfriend-meme.webp} |   0
 .../shutterstock_297886754.jpg                |   3 ++
 ...ference.jpg => jamest-seated-armchair.jpg} |   0
 ...eference.jpg => jamest-standing-piano.jpg} |   0
 .../{reference.jpg => br2049-joi-close.jpg}   |   0
 .../{reference.webp => br2049-joi-wide.webp}  |   0
 ...{reference.jpg => portrait-2007-stage.jpg} |   0
 .../pexels-1525612-aerial-coast.jpg           |   3 ++
 ...els-19803757-aerial-coastline-tenerife.jpg |   3 ++
 .../scene/burning-building/metadata.md        |  27 ++++++++++
 .../pexels-266487-fire-building.jpg           |   3 ++
 .../scene/fire-explosion/metadata.md          |  27 ++++++++++
 .../fire-explosion/pexels-266526-fire.jpg     |   3 ++
 .../scene/helicopter-cityscape/metadata.md    |  27 ++++++++++
 .../pexels-17480286-helicopter-nyc.jpg        |   3 ++
 .../pexels-2033343-helicopter-city.jpg        |   3 ++
 .../pexels-414171-macro-flower.jpg            |   3 ++
 ...exels-669502-macro-flower-white-yellow.jpg |   3 ++
 .../scene/neon-tokyo-shibuya/metadata.md      |  27 ++++++++++
 .../pexels-2506923-tokyo-neon.jpg             |   3 ++
 .../pexels-46235-emperor-penguins-ice.jpg     |   3 ++
 .../pexels-1530423-rain-city-night.jpg        |   3 ++
 .../pexels-30929491-uyuni-salt-flat.jpg       |   3 ++
 .../scene/street-level-day/metadata.md        |  27 ++++++++++
 .../pexels-1034662-street-day.jpg             |   3 ++
 .../scene/tropical-beach-noon/metadata.md     |  27 ++++++++++
 .../pexels-1174732-tropical-beach.jpg         |   3 ++
 .../pexels-797724-venice-grand-canal.jpg      |   3 ++
 .../references/sea/calm-lake/metadata.md      |  27 ++++++++++
 .../sea/calm-lake/pexels-346529-calm-lake.jpg |   3 ++
 .../sea/frozen-wave-iceland/metadata.md       |  27 ++++++++++
 .../pexels-3264723-diamond-beach.jpg          |   3 ++
 ...xels-4087258-diamond-beach-iceland-ice.jpg |   3 ++
 .../sea/great-barrier-reef/metadata.md        |  27 ++++++++++
 ...xels-17100727-coral-reef-tropical-fish.jpg |   3 ++
 .../pexels-3369102-coral-reef.jpg             |   3 ++
 .../references/sea/niagara-falls/metadata.md  |  27 ++++++++++
 .../pexels-14436969-niagara-falls-ontario.jpg |   3 ++
 .../pexels-2743287-niagara-falls.jpg          |   3 ++
 ...eference.jpg => aerial-tropical-beach.jpg} |   0
 ...ask.png => aerial-tropical-beach.mask.png} |   0
 .../references/sea/ocean-horizon/metadata.md  |  10 ++--
 .../references/sea/river-rapids/metadata.md   |  27 ++++++++++
 .../pexels-14321975-river-rocks-forest.jpg    |   3 ++
 .../pexels-2406386-river-rapids.jpg           |   3 ++
 .../pexels-8908464-whitewater-rapids.jpg      |   3 ++
 ....jpg => sunset-oswego-nikon-d5100-low.jpg} |   0
 ...ence.jpg => sunset-oswego-nikon-d5100.jpg} |   0
 ...png => sunset-oswego-nikon-d5100.mask.png} |   0
 .../sea/tropical-shallows/metadata.md         |  27 ++++++++++
 .../pexels-1320684-tropical-shallows.jpg      |   3 ++
 ...ikimedia-cyrilfluck-manawaiopuna-falls.jpg |   3 ++
 .../pexels-6527117-blue-hour-athens.jpg       |   3 ++
 .../pexels-867092-city-dusk.jpg               |   3 ++
 ...rence.jpg => city-sunrise-appalachian.jpg} |   0
 ....png => city-sunrise-appalachian.mask.png} |   0
 .../references/sky/city-sunrise/metadata.md   |  10 ++--
 .../sky/clear-blue-midday/metadata.md         |  27 ++++++++++
 .../pexels-281260-clear-blue-sky.jpg          |   3 ++
 .../sky/crepuscular-rays/metadata.md          |  27 ++++++++++
 .../pexels-13036981-sunbeams-dark-clouds.jpg  |   3 ++
 .../pexels-844297-god-rays.jpg                |   3 ++
 .../pexels-2114014-cumulus-clouds.jpg         |   3 ++
 .../pexels-5745683-blue-sky-fluffy-clouds.jpg |   3 ++
 ...ference.jpg => fiery-silhouette-urban.jpg} |   0
 ...sk.png => fiery-silhouette-urban.mask.png} |   0
 .../sky/fiery-silhouette/metadata.md          |  10 ++--
 .../sky/golden-hour-clouds/metadata.md        |  10 ++--
 ...rence.jpg => night-starfield-mountain.jpg} |   0
 ....png => night-starfield-mountain.mask.png} |   0
 .../pexels-926995-golden-hour-field.jpg       |   3 ++
 .../sky/mojave-twilight/metadata.md           |  10 ++--
 ...ce.jpg => mojave-twilight-joshua-tree.jpg} |   0
 ...g => mojave-twilight-joshua-tree.mask.png} |   0
 .../pexels-16065845-overcast-hills.jpg        |   3 ++
 .../pexels-414659-grey-overcast-sky.jpg       |   3 ++
 .../sky/san-diego-sunset/metadata.md          |   6 +--
 ...sk.png => san-diego-palms-sunset.mask.png} |   0
 ...rence.webp => san-diego-palms-sunset.webp} |   0
 .../references/sky/solar-eclipse/metadata.md  |  27 ++++++++++
 .../pexels-580679-solar-eclipse.jpg           |   3 ++
 .../references/sky/storm-clouds/metadata.md   |  27 ++++++++++
 .../pexels-1162251-storm-clouds.jpg           |   3 ++
 .../sky/sunrise-coastal/metadata.md           |  27 ++++++++++
 .../pexels-1032650-sunrise-coast.jpg          |   3 ++
 ...pexels-35145247-sunrise-ocean-pink-sky.jpg |   3 ++
 .../{reference.jpg => sunset-2007.jpg}        |   0
 ...eference.mask.png => sunset-2007.mask.png} |   0
 .../sky/sunset-dramatic/metadata.md           |  10 ++--
 ...eference.jpg => sunset-dock-boat-lake.jpg} |   0
 ...ask.png => sunset-dock-boat-lake.mask.png} |   0
 ...erence.jpg => tappan-zee-hudson-river.jpg} |   0
 ...k.png => tappan-zee-hudson-river.mask.png} |   0
 .../nasa-eva-mccandless-1600.jpg              |   3 ++
 .../astronaut-selfie/nasa-eva-spacewalk.jpg   |   3 ++
 ...els-8474973-astronaut-spacesuit-helmet.jpg |   3 ++
 .../references/space/blue-marble/metadata.md  |  48 ++++++++++++++++++
 .../nasa-apollo17-blue-marble-1600.jpg        |   3 ++
 .../nasa-apollo17-blue-marble-full.jpg        |   3 ++
 .../blue-marble/nasa-apollo17-blue-marble.png |   3 ++
 .../space/blue-marble/provenance.txt          |  11 ++++
 .../references/space/moon-landing/metadata.md |  30 +++++++++++
 .../nasa-apollo11-aldrin-AS11-40-5903.jpg     |   3 ++
 .../nasa-as11-40-5903-buzz-aldrin-1600.jpg    |   3 ++
 .../nasa-as11-40-5903-buzz-aldrin-full.jpg    |   3 ++
 .../nasa-as11-40-5903-buzz-aldrin.jpg         |   3 ++
 .../references/space/saturn-rings/metadata.md |  27 ++++++++++
 .../nasa-PIA17172-saturn-backlit-1600.jpg     |   3 ++
 .../nasa-PIA17172-saturn-backlit-hires.jpg    |   3 ++
 .../nasa-PIA17172-saturn-backlit.jpg          |   3 ++
 .../nasa-cassini-saturn-backlit-PIA17172.jpg  |   3 ++
 .../pexels-3660696-blue-glacier.jpg           |   3 ++
 .../pexels-29054973-autumn-forest.jpg         |   3 ++
 .../pexels-2070025-bamboo-forest.jpg          |   3 ++
 .../terrain/cave-cenote/metadata.md           |  27 ++++++++++
 .../pexels-11447571-cenote-cave-swimming.jpg  |   3 ++
 .../cave-cenote/pexels-3713497-cenote.jpg     |   3 ++
 .../pexels-402028-cherry-blossom-temple.jpg   |   3 ++
 .../pexels-32103725-coastal-cliffs.jpg        |   3 ++
 .../terrain/everest-summit/metadata.md        |  27 ++++++++++
 .../pexels-2335126-himalaya.jpg               |   3 ++
 .../pexels-6642124-everest-summit.jpg         |   3 ++
 .../pexels-29106462-norwegian-fjord.jpg       |   3 ++
 .../pexels-1367192-foggy-forest.jpg           |   3 ++
 ...exels-6363665-looking-up-forest-canopy.jpg |   3 ++
 .../terrain/frozen-waterfall/metadata.md      |  27 ++++++++++
 ...exels-10837132-frozen-waterfall-winter.jpg |   3 ++
 .../pexels-2662116-frozen-waterfall.jpg       |   3 ++
 .../terrain/grand-canyon/metadata.md          |  44 ++++++++++++++++
 .../pexels-17131308-grand-canyon.jpg          |   3 ++
 .../pexels-2559941-desert-crater.jpg          |   3 ++
 ...wikimedia-grahampurse-barringer-crater.jpg |   3 ++
 .../terrain/redwood-forest/metadata.md        |  27 ++++++++++
 .../pexels-1125265-redwoods.jpg               |   3 ++
 .../terrain/rice-terraces-bali/metadata.md    |  27 ++++++++++
 .../pexels-1146708-green-rice-field.jpg       |   3 ++
 .../pexels-2154121-green-rice-terraces.jpg    |   3 ++
 .../pexels-2166559-rice-terraces.jpg          |   3 ++
 .../pexels-2176032-green-rice-aerial.jpg      |   3 ++
 .../terrain/sahara-dunes/metadata.md          |  44 ++++++++++++++++
 .../pexels-28829633-sahara-dunes.jpg          |   3 ++
 .../pexels-1054655-elephant-savanna.jpg       |   3 ++
 .../terrain/underground-river/metadata.md     |  27 ++++++++++
 .../pexels-2739013-cave-water.jpg             |   3 ++
 ...ggro-puerto-princesa-underground-river.jpg |   3 ++
 .../pexels-6307488-volcano-eruption.jpg       |   3 ++
 ...ce.jpg => inspiration_bladerunner_old.jpg} |   0
 .../references/urban/blade-runner/metadata.md |  12 ++---
 .../midjourney-cyberpunk-city.png             |   3 ++
 ...pexels-29221023-colorful-favela-houses.jpg |   3 ++
 ...exels-13334741-hong-kong-neon-mong-kok.jpg |   3 ++
 ...els-30944543-hong-kong-skyline-density.jpg |   3 ++
 ...ence.jpg => barnyz-flickr-paris-seine.jpg} |   0
 .../references/urban/paris-eiffel/metadata.md |  18 +++++--
 .../vehicle/f1-car-speed/metadata.md          |  27 ++++++++++
 .../f1-car-speed/pexels-12801-race-car.jpg    |   3 ++
 .../vehicle/sailing-yacht/metadata.md         |  27 ++++++++++
 .../sailing-yacht/pexels-273886-sailing.jpg   |   3 ++
 .../vehicle/steam-locomotive/metadata.md      |  27 ++++++++++
 .../pexels-1670732-steam-train.jpg            |   3 ++
 ...els-33109175-steam-train-german-forest.jpg |   3 ++
 .../weather/blizzard-mountain/metadata.md     |  27 ++++++++++
 .../pexels-688660-blizzard.jpg                |   3 ++
 .../pexels-691668-snowy-mountains.jpg         |   3 ++
 .../references/weather/fog-valley/metadata.md |  27 ++++++++++
 .../fog-valley/pexels-1367192-fog-valley.jpg  |   3 ++
 benchmark/references/weather/fog/metadata.md  |  10 ++--
 ...{reference.jpg => ocean-foam-churning.jpg} |   0
 .../weather/hurricane-eye/metadata.md         |  27 ++++++++++
 .../pexels-1118873-hurricane.jpg              |   3 ++
 .../pexels-28823583-lightning-city.jpg        |   3 ++
 ...exels-18867525-rainy-night-neon-street.jpg |   3 ++
 .../references/weather/rain-scene/metadata.md |  27 ++++++++++
 .../rain-scene/pexels-1529360-rain-street.jpg |   3 ++
 .../references/weather/rainbow/metadata.md    |  27 ++++++++++
 .../rainbow/pexels-1542495-rainbow.jpg        |   3 ++
 .../references/weather/sandstorm/metadata.md  |  27 ++++++++++
 .../sandstorm/pexels-1001435-sandstorm.jpg    |   3 ++
 ...pexels-905998-sandstorm-rock-formation.jpg |   3 ++
 .../snowfall/pexels-12699624-winter-cabin.jpg |   3 ++
 .../references/weather/tornado/metadata.md    |  27 ++++++++++
 .../tornado/pexels-1446076-tornado.jpg        |   3 ++
 .../pexels-16241883-waterfall-rainbow.jpg     |   3 ++
 cesium-request-cache.sqlite-shm               | Bin 0 -> 32768 bytes
 cesium-request-cache.sqlite-wal               |   0
 323 files changed, 2300 insertions(+), 59 deletions(-)
 create mode 100644 Content/Maps/brain_1774295359.umap
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diff --git a/benchmark/references/architecture/favela-hillside/metadata.md b/benchmark/references/architecture/favela-hillside/metadata.md
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index 000000000..69ba9a6eb
--- /dev/null
+++ b/benchmark/references/architecture/favela-hillside/metadata.md
@@ -0,0 +1,27 @@
+# Favela Hillside
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | ARCHITECTURE |
+| Description | Colorful stacked informal buildings climbing a hillside. Irregular geometry, vibrant paint.... |
+
+## Key Tests
+Non-uniform geometry, color variety, steep terrain + buildings, corrugated metal materials
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/architecture/favela-hillside/pexels-3889855-favela.jpg \
+    --domain ARCHITECTURE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/3889855/
+- **Photo ID**: 3889855
+- **Attribution Required**: No
diff --git a/benchmark/references/architecture/favela-hillside/pexels-3889855-favela.jpg b/benchmark/references/architecture/favela-hillside/pexels-3889855-favela.jpg
new file mode 100644
index 000000000..df6f1d97f
--- /dev/null
+++ b/benchmark/references/architecture/favela-hillside/pexels-3889855-favela.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f9da39eabf09a57e795c04ce710d80cb2d06b72317cd18d91edd6d580dc1af56
+size 513603
diff --git a/benchmark/references/architecture/gothic-castle/metadata.md b/benchmark/references/architecture/gothic-castle/metadata.md
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index 000000000..3ebfb5b2d
--- /dev/null
+++ b/benchmark/references/architecture/gothic-castle/metadata.md
@@ -0,0 +1,27 @@
+# Gothic Castle
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | ARCHITECTURE |
+| Description | Medieval castle on a hilltop. Stone towers, moody overcast sky, ravens, dramatic.... |
+
+## Key Tests
+Stone materials, Gothic architecture, overcast moody lighting, atmospheric fog, scale
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/architecture/gothic-castle/pexels-831082-gothic-castle.jpg \
+    --domain ARCHITECTURE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/831082/
+- **Photo ID**: 831082
+- **Attribution Required**: No
diff --git a/benchmark/references/architecture/gothic-castle/pexels-831082-gothic-castle.jpg b/benchmark/references/architecture/gothic-castle/pexels-831082-gothic-castle.jpg
new file mode 100644
index 000000000..dc19d0084
--- /dev/null
+++ b/benchmark/references/architecture/gothic-castle/pexels-831082-gothic-castle.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b4813ce55f57f187ea3fc54ec8f2a4e5bfccf6742bbea251545fa43260510d02
+size 388799
diff --git a/benchmark/references/architecture/hong-kong-density/metadata.md b/benchmark/references/architecture/hong-kong-density/metadata.md
new file mode 100644
index 000000000..6c7d1c6a6
--- /dev/null
+++ b/benchmark/references/architecture/hong-kong-density/metadata.md
@@ -0,0 +1,27 @@
+# Hong Kong Density
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | ARCHITECTURE |
+| Description | Ultra-dense vertical cityscape. Neon signs, laundry lines, air conditioners, life in every window.... |
+
+## Key Tests
+Dense instanced geometry, thousands of emissive windows, neon signage, claustrophobic scale
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/architecture/hong-kong-density/pexels-3560168-hong-kong.jpg \
+    --domain ARCHITECTURE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/3560168/
+- **Photo ID**: 3560168
+- **Attribution Required**: No
diff --git a/benchmark/references/architecture/hong-kong-density/pexels-3560168-hong-kong.jpg b/benchmark/references/architecture/hong-kong-density/pexels-3560168-hong-kong.jpg
new file mode 100644
index 000000000..d502db770
--- /dev/null
+++ b/benchmark/references/architecture/hong-kong-density/pexels-3560168-hong-kong.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b5256da79c6f7a238a1eb5cfac17953a4dcad3333936a3ed139423fbf8bc7eb5
+size 246038
diff --git a/benchmark/references/architecture/santorini-sunset/metadata.md b/benchmark/references/architecture/santorini-sunset/metadata.md
new file mode 100644
index 000000000..e83d2cbc8
--- /dev/null
+++ b/benchmark/references/architecture/santorini-sunset/metadata.md
@@ -0,0 +1,44 @@
+# Santorini Blue Dome Church
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Environment | Outdoor |
+| Domain | ARCHITECTURE |
+| Setting | Santorini, Greece — caldera overlook |
+| Time of Day | Late afternoon |
+| Season | Summer |
+| Weather | Clear |
+| Mood | Iconic, Mediterranean, warm |
+
+## Key Elements
+1. **Blue dome church** — characteristic Santorini blue-domed Orthodox church
+2. **White-washed buildings** — bright white walls and structures in direct sunlight
+3. **Caldera and Aegean Sea** — deep blue water visible beyond the architecture
+4. **Mediterranean atmosphere** — warm clear light with blue sky
+5. **Architectural detail** — bells, steps, terraces typical of Cycladic architecture
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/architecture/santorini-sunset/pexels-6110642-santorini.jpg \
+    --domain ARCHITECTURE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## What Success Looks Like
+- Blue dome colour accurately reproduced (saturated cobalt/ultramarine, not grey-blue)
+- White walls correctly exposed without blowout (bright but retaining detail)
+- Aegean Sea visible as deep blue backdrop behind the architecture
+- Warm Mediterranean light with correct colour temperature
+- Architectural forms readable — dome shape, wall edges, stepped terraces
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/blue-domed-church-in-santorini-6110642/
+- **Photo ID**: 6110642
+- **Photographer**: Fernando Reyes
+- **Attribution Required**: No
diff --git a/benchmark/references/architecture/santorini-sunset/pexels-6110642-santorini.jpg b/benchmark/references/architecture/santorini-sunset/pexels-6110642-santorini.jpg
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index 000000000..eb65112ea
--- /dev/null
+++ b/benchmark/references/architecture/santorini-sunset/pexels-6110642-santorini.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:290a2f3d3eeec736a30af73753d862a26159b44b1a45dcac52a0d72391fcd8be
+size 264121
diff --git a/benchmark/references/character/astronaut-selfie/pexels-586056-astronaut.jpg b/benchmark/references/character/astronaut-selfie/pexels-586056-astronaut.jpg
new file mode 100644
index 000000000..6ade876a4
--- /dev/null
+++ b/benchmark/references/character/astronaut-selfie/pexels-586056-astronaut.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:32b6d81bf95c3b0f4d89ff8d563ac4d1ce346bca3e07488f5859b0d72a3d960f
+size 223570
diff --git a/benchmark/references/character/ballet-dancer/metadata.md b/benchmark/references/character/ballet-dancer/metadata.md
new file mode 100644
index 000000000..59323194a
--- /dev/null
+++ b/benchmark/references/character/ballet-dancer/metadata.md
@@ -0,0 +1,27 @@
+# Ballet Dancer
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | CHARACTER |
+| Description | Ballerina mid-leap in spotlight on dark stage. Motion blur, fabric, dramatic single-source light.... |
+
+## Key Tests
+Character animation pose, fabric simulation, spotlight, motion blur, dark stage exposure
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/character/ballet-dancer/pexels-2188012-ballet.jpg \
+    --domain CHARACTER \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2188012/
+- **Photo ID**: 2188012
+- **Attribution Required**: No
diff --git a/benchmark/references/character/ballet-dancer/pexels-17247349-ballerina-stage.jpg b/benchmark/references/character/ballet-dancer/pexels-17247349-ballerina-stage.jpg
new file mode 100644
index 000000000..eaa665f48
--- /dev/null
+++ b/benchmark/references/character/ballet-dancer/pexels-17247349-ballerina-stage.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1f84191b781bce5033a0c369efdcf29d19ce46ba0284df4919ae50f417a23d57
+size 136818
diff --git a/benchmark/references/character/ballet-dancer/pexels-2188012-ballet.jpg b/benchmark/references/character/ballet-dancer/pexels-2188012-ballet.jpg
new file mode 100644
index 000000000..c2a2c085a
--- /dev/null
+++ b/benchmark/references/character/ballet-dancer/pexels-2188012-ballet.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9820b9c12d26860df37375ffa97582e5f4bd824e287f7f44a8d9a8b03c5f1bb4
+size 99352
diff --git a/benchmark/references/character/medieval-knight/metadata.md b/benchmark/references/character/medieval-knight/metadata.md
new file mode 100644
index 000000000..5d6d1c215
--- /dev/null
+++ b/benchmark/references/character/medieval-knight/metadata.md
@@ -0,0 +1,27 @@
+# Medieval Knight
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | CHARACTER |
+| Description | Armored knight on horseback on a misty battlefield. Metal armor, horse, fog, dawn light.... |
+
+## Key Tests
+Metal armor materials (PBR), horse character, fog, dawn side-lighting, period costume
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/character/medieval-knight/pexels-5765853-knight.jpg \
+    --domain CHARACTER \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/5765853/
+- **Photo ID**: 5765853
+- **Attribution Required**: No
diff --git a/benchmark/references/character/medieval-knight/pexels-5765853-knight.jpg b/benchmark/references/character/medieval-knight/pexels-5765853-knight.jpg
new file mode 100644
index 000000000..c1e3b16aa
--- /dev/null
+++ b/benchmark/references/character/medieval-knight/pexels-5765853-knight.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fbb99457012b3e1d9074b9a11391f12946e0dc7fb8c67de7549328b9d45d170e
+size 1230534
diff --git a/benchmark/references/character/medieval-knight/pexels-9777909-knight-armor-field.jpg b/benchmark/references/character/medieval-knight/pexels-9777909-knight-armor-field.jpg
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index 000000000..a25bc2847
--- /dev/null
+++ b/benchmark/references/character/medieval-knight/pexels-9777909-knight-armor-field.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b1ea418bfe4282564a35af4c3352e8546dc7ad82fa86a1c1110d8c87240b06ea
+size 249086
diff --git a/benchmark/references/character/orchestra-concert/pexels-7095073-orchestra.jpg b/benchmark/references/character/orchestra-concert/pexels-7095073-orchestra.jpg
new file mode 100644
index 000000000..72d2f12b2
--- /dev/null
+++ b/benchmark/references/character/orchestra-concert/pexels-7095073-orchestra.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4ae437f84d93257eb0632b48b6e3e85bc0d36c9e3fe939bd04e5d3e0d2f81585
+size 29
diff --git a/benchmark/references/character/orchestra-concert/wikimedia-cincinnati-symphony-orchestra.jpg b/benchmark/references/character/orchestra-concert/wikimedia-cincinnati-symphony-orchestra.jpg
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index 000000000..333b244dd
--- /dev/null
+++ b/benchmark/references/character/orchestra-concert/wikimedia-cincinnati-symphony-orchestra.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ee0b023317ba5eab9f16f08b7e530c135a1e74c645bcf31b42b5b5f591265099
+size 461515
diff --git a/benchmark/references/character/penguins-antarctica/metadata.md b/benchmark/references/character/penguins-antarctica/metadata.md
new file mode 100644
index 000000000..d2ac6ace1
--- /dev/null
+++ b/benchmark/references/character/penguins-antarctica/metadata.md
@@ -0,0 +1,27 @@
+# South Pole Penguins
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | CHARACTER |
+| Description | Emperor penguins on Antarctic ice. Colony of animals in extreme environment.... |
+
+## Key Tests
+Non-humanoid characters at scale, animal crowd, ice/snow materials, extreme cold lighting, wildlife behavior
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/character/penguins-antarctica/pexels-2078474-penguins.jpg \
+    --domain CHARACTER \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2078474/
+- **Photo ID**: 2078474
+- **Attribution Required**: No
diff --git a/benchmark/references/character/penguins-antarctica/pexels-2078474-penguins.jpg b/benchmark/references/character/penguins-antarctica/pexels-2078474-penguins.jpg
new file mode 100644
index 000000000..e65acec11
--- /dev/null
+++ b/benchmark/references/character/penguins-antarctica/pexels-2078474-penguins.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0c4e2b5ac02b5df7c7f7f981b33a60683bbbe39115a138a4166c84b33fdba297
+size 325452
diff --git a/benchmark/references/character/wildlife/metadata.md b/benchmark/references/character/wildlife/metadata.md
new file mode 100644
index 000000000..b825fcf21
--- /dev/null
+++ b/benchmark/references/character/wildlife/metadata.md
@@ -0,0 +1,27 @@
+# Wildlife / Animals
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | CHARACTER |
+| Description | Animal in natural habitat. Tests non-humanoid character rendering.... |
+
+## Key Tests
+Animal mesh quality, fur/feather materials, natural pose, environment match
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/character/wildlife/pexels-247431-wildlife.jpg \
+    --domain CHARACTER \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/247431/
+- **Photo ID**: 247431
+- **Attribution Required**: No
diff --git a/benchmark/references/character/wildlife/pexels-247431-wildlife.jpg b/benchmark/references/character/wildlife/pexels-247431-wildlife.jpg
new file mode 100644
index 000000000..e0a7a05a3
--- /dev/null
+++ b/benchmark/references/character/wildlife/pexels-247431-wildlife.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b8a89ac5bf5abf37cf4284d7b202fb7c40ea7063d54adae5339cc21be4a78401
+size 306828
diff --git a/benchmark/references/cinema/alien-planet-titan/nasa-cassini-titan-sunglint-kraken-mare.jpg b/benchmark/references/cinema/alien-planet-titan/nasa-cassini-titan-sunglint-kraken-mare.jpg
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@@ -0,0 +1,3 @@
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diff --git a/benchmark/references/cinema/jurassic-jungle/flickr-kaaawa-valley-jurassic-park.jpg b/benchmark/references/cinema/jurassic-jungle/flickr-kaaawa-valley-jurassic-park.jpg
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diff --git a/benchmark/references/cinema/jurassic-jungle/wikimedia-cyrilfluck-manawaiopuna-falls.jpg b/benchmark/references/cinema/jurassic-jungle/wikimedia-cyrilfluck-manawaiopuna-falls.jpg
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diff --git a/benchmark/references/cinema/pirate-ship-storm/midjourney-v7-pirate-ship-storm.png b/benchmark/references/cinema/pirate-ship-storm/midjourney-v7-pirate-ship-storm.png
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diff --git a/benchmark/references/cinema/western-showdown/shutterstock-103530782-western-showdown.jpg b/benchmark/references/cinema/western-showdown/shutterstock-103530782-western-showdown.jpg
new file mode 100644
index 000000000..c00cb4184
--- /dev/null
+++ b/benchmark/references/cinema/western-showdown/shutterstock-103530782-western-showdown.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/benchmark/references/food/spaghetti/metadata.md b/benchmark/references/food/spaghetti/metadata.md
index aa4ce9d15..fcaef45c8 100644
--- a/benchmark/references/food/spaghetti/metadata.md
+++ b/benchmark/references/food/spaghetti/metadata.md
@@ -38,8 +38,8 @@ python -m brain \
 
 
 ## Licensing
-- **Category**: own-work
-- **License**: CC BY-NC 4.0
-- **Attribution**: James Tagg
-- **Attribution Required**: No
-- **Notes**: Internal food photography production
+- **Category**: third-party-ai-generated
+- **License**: NONE — unlicensed use
+- **Attribution**: Frame from Seedance AI promo video (Will Smith likeness)
+- **Attribution Required**: N/A
+- **Notes**: AI-generated video frame from Seedance promotional material featuring Will Smith's likeness without authorization. The "Will Smith eating spaghetti" meme has taken on a life of its own as an iconic early AI-video benchmark. Used here as an internal rendering target only — not distributed, not sold. Apologies to Will Smith.
diff --git a/benchmark/references/food/spaghetti/reference.mask.mask.mask.png b/benchmark/references/food/spaghetti/seedance-will-smith-spaghetti.mask.mask.mask.png
similarity index 100%
rename from benchmark/references/food/spaghetti/reference.mask.mask.mask.png
rename to benchmark/references/food/spaghetti/seedance-will-smith-spaghetti.mask.mask.mask.png
diff --git a/benchmark/references/food/spaghetti/reference.mask.mask.png b/benchmark/references/food/spaghetti/seedance-will-smith-spaghetti.mask.mask.png
similarity index 100%
rename from benchmark/references/food/spaghetti/reference.mask.mask.png
rename to benchmark/references/food/spaghetti/seedance-will-smith-spaghetti.mask.mask.png
diff --git a/benchmark/references/food/spaghetti/reference.mask.png b/benchmark/references/food/spaghetti/seedance-will-smith-spaghetti.mask.png
similarity index 100%
rename from benchmark/references/food/spaghetti/reference.mask.png
rename to benchmark/references/food/spaghetti/seedance-will-smith-spaghetti.mask.png
diff --git a/benchmark/references/food/spaghetti/reference.png b/benchmark/references/food/spaghetti/seedance-will-smith-spaghetti.png
similarity index 100%
rename from benchmark/references/food/spaghetti/reference.png
rename to benchmark/references/food/spaghetti/seedance-will-smith-spaghetti.png
diff --git a/benchmark/references/food/street-food-night-market/metadata.md b/benchmark/references/food/street-food-night-market/metadata.md
new file mode 100644
index 000000000..8bb4d18f5
--- /dev/null
+++ b/benchmark/references/food/street-food-night-market/metadata.md
@@ -0,0 +1,27 @@
+# Street Food Night Market
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | FOOD |
+| Description | Asian night market food stall. Wok flames, steam, neon signage, crowd browsing.... |
+
+## Key Tests
+Fire/steam particles, food materials, neon emissives, crowd, warm/cool light mix
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/food/street-food-night-market/pexels-2347311-street-food.jpg \
+    --domain FOOD \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2347311/
+- **Photo ID**: 2347311
+- **Attribution Required**: No
diff --git a/benchmark/references/food/street-food-night-market/pexels-2347311-street-food.jpg b/benchmark/references/food/street-food-night-market/pexels-2347311-street-food.jpg
new file mode 100644
index 000000000..9b24144e4
--- /dev/null
+++ b/benchmark/references/food/street-food-night-market/pexels-2347311-street-food.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2b4359385abe5a88c71aae6d7700f81acb0272dfe22f082cf8d114b04f828d8e
+size 315945
diff --git a/benchmark/references/food/street-food-night-market/pexels-29531047-tokyo-street-food-night.jpg b/benchmark/references/food/street-food-night-market/pexels-29531047-tokyo-street-food-night.jpg
new file mode 100644
index 000000000..67e8e746f
--- /dev/null
+++ b/benchmark/references/food/street-food-night-market/pexels-29531047-tokyo-street-food-night.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:18f252bda8baf73feebab31eff8c49d1232388b613f390e0d4440a754d7ff046
+size 220894
diff --git a/benchmark/references/food/sushi-counter/metadata.md b/benchmark/references/food/sushi-counter/metadata.md
new file mode 100644
index 000000000..c9b631025
--- /dev/null
+++ b/benchmark/references/food/sushi-counter/metadata.md
@@ -0,0 +1,27 @@
+# Sushi Counter
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | FOOD |
+| Description | Omakase sushi bar. Fresh fish on rice, wooden counter, chef's hands, precise presentation.... |
+
+## Key Tests
+Wet fish SSS, rice texture, wood grain, precise small-scale materials, warm intimate light
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/food/sushi-counter/pexels-2098085-sushi.jpg \
+    --domain FOOD \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2098085/
+- **Photo ID**: 2098085
+- **Attribution Required**: No
diff --git a/benchmark/references/food/sushi-counter/pexels-2098085-sushi.jpg b/benchmark/references/food/sushi-counter/pexels-2098085-sushi.jpg
new file mode 100644
index 000000000..ab77dd410
--- /dev/null
+++ b/benchmark/references/food/sushi-counter/pexels-2098085-sushi.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ea2189eed44a1aaf9bf88971f65bd2a6287e65accc008b2a221333e049b0e031
+size 210410
diff --git a/benchmark/references/interior/abandoned-industrial/pexels-15800505-abandoned-factory-interior.jpg b/benchmark/references/interior/abandoned-industrial/pexels-15800505-abandoned-factory-interior.jpg
new file mode 100644
index 000000000..ad2473099
--- /dev/null
+++ b/benchmark/references/interior/abandoned-industrial/pexels-15800505-abandoned-factory-interior.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f95aa58892a0b91144f2fc2bf116caf8c9518503bb627343584993d4b168e0e7
+size 312019
diff --git a/benchmark/references/interior/abandoned-industrial/pexels-3329292-abandoned.jpg b/benchmark/references/interior/abandoned-industrial/pexels-3329292-abandoned.jpg
new file mode 100644
index 000000000..d0f353439
--- /dev/null
+++ b/benchmark/references/interior/abandoned-industrial/pexels-3329292-abandoned.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d0d2857f96e6bc44ef88075c2d6211352bdb786efd896e6c056999d5b4a6e04a
+size 1031922
diff --git a/benchmark/references/interior/cathedral-stained-glass/pexels-2733267-cathedral-interior.jpg b/benchmark/references/interior/cathedral-stained-glass/pexels-2733267-cathedral-interior.jpg
new file mode 100644
index 000000000..34891b5c5
--- /dev/null
+++ b/benchmark/references/interior/cathedral-stained-glass/pexels-2733267-cathedral-interior.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:69b1fe42b9aaff6bceebb12afd0fac4b23b7824c704621dab9e5b9155f680b61
+size 660302
diff --git a/benchmark/references/interior/interior-artificial/metadata.md b/benchmark/references/interior/interior-artificial/metadata.md
new file mode 100644
index 000000000..52acd285f
--- /dev/null
+++ b/benchmark/references/interior/interior-artificial/metadata.md
@@ -0,0 +1,27 @@
+# Interior (Artificial Light)
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | INTERIOR |
+| Description | Interior lit only by artificial sources. Warm tungsten, cool fluorescent.... |
+
+## Key Tests
+Local light sources, color temperature mixing, shadow from point lights
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/interior/interior-artificial/pexels-1571460-restaurant.jpg \
+    --domain INTERIOR \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1571460/
+- **Photo ID**: 1571460
+- **Attribution Required**: No
diff --git a/benchmark/references/interior/interior-artificial/pexels-1571460-restaurant.jpg b/benchmark/references/interior/interior-artificial/pexels-1571460-restaurant.jpg
new file mode 100644
index 000000000..65b9bbd05
--- /dev/null
+++ b/benchmark/references/interior/interior-artificial/pexels-1571460-restaurant.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0f169c01a55f4aee197b4ac0a182aa3053cc7c8428b0ac361282088bd1f0ec88
+size 252089
diff --git a/benchmark/references/interior/interior-natural-light/metadata.md b/benchmark/references/interior/interior-natural-light/metadata.md
new file mode 100644
index 000000000..f707be611
--- /dev/null
+++ b/benchmark/references/interior/interior-natural-light/metadata.md
@@ -0,0 +1,27 @@
+# Interior with Natural Light
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | INTERIOR |
+| Description | Room with windows, natural light streaming in. Mixed indoor/outdoor exposure.... |
+
+## Key Tests
+Window exposure, interior bounce light, no fog indoors, HDR range
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/interior/interior-natural-light/pexels-1457842-window-light.jpg \
+    --domain INTERIOR \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1457842/
+- **Photo ID**: 1457842
+- **Attribution Required**: No
diff --git a/benchmark/references/interior/interior-natural-light/pexels-1457842-window-light.jpg b/benchmark/references/interior/interior-natural-light/pexels-1457842-window-light.jpg
new file mode 100644
index 000000000..be2d11825
--- /dev/null
+++ b/benchmark/references/interior/interior-natural-light/pexels-1457842-window-light.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cc6d8bd36107ef10aac748adf522880692fae15a93ecb348093ff7117b42d212
+size 184798
diff --git a/benchmark/references/interior/japanese-onsen/metadata.md b/benchmark/references/interior/japanese-onsen/metadata.md
new file mode 100644
index 000000000..775274933
--- /dev/null
+++ b/benchmark/references/interior/japanese-onsen/metadata.md
@@ -0,0 +1,27 @@
+# Japanese Onsen
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | INTERIOR |
+| Description | Traditional hot spring bath. Steam rising from water, wooden architecture, candlelight, rocks.... |
+
+## Key Tests
+Steam volumetrics, warm wood materials, water surface, candlelight point sources, intimate scale
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/interior/japanese-onsen/pexels-3225529-onsen.jpg \
+    --domain INTERIOR \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/3225529/
+- **Photo ID**: 3225529
+- **Attribution Required**: No
diff --git a/benchmark/references/interior/japanese-onsen/pexels-3225529-hot-spring-steam.jpg b/benchmark/references/interior/japanese-onsen/pexels-3225529-hot-spring-steam.jpg
new file mode 100644
index 000000000..d7d4e6266
--- /dev/null
+++ b/benchmark/references/interior/japanese-onsen/pexels-3225529-hot-spring-steam.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:60461b976b74a430de90ec477e91f60118b0c615e41a63d792b1d9554eb8dc42
+size 484262
diff --git a/benchmark/references/interior/japanese-onsen/pexels-3225529-onsen.jpg b/benchmark/references/interior/japanese-onsen/pexels-3225529-onsen.jpg
new file mode 100644
index 000000000..cbc6f219d
--- /dev/null
+++ b/benchmark/references/interior/japanese-onsen/pexels-3225529-onsen.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:04fe0e015815ea2741cbc71f461a1e757e80ae9d0f1eebb1b52ed53a8d0acc2a
+size 669270
diff --git a/benchmark/references/interior/japanese-onsen/pexels-7937410-onsen.jpg b/benchmark/references/interior/japanese-onsen/pexels-7937410-onsen.jpg
new file mode 100644
index 000000000..08fc373a3
--- /dev/null
+++ b/benchmark/references/interior/japanese-onsen/pexels-7937410-onsen.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:44e5942e31596645030fe87a9cbf57ef53a71262c29a2d20a6f777852e8f90b7
+size 293084
diff --git a/benchmark/references/interior/japanese-onsen/wikimedia-chris73-nachikatsuura-onsen.jpg b/benchmark/references/interior/japanese-onsen/wikimedia-chris73-nachikatsuura-onsen.jpg
new file mode 100644
index 000000000..77eced849
--- /dev/null
+++ b/benchmark/references/interior/japanese-onsen/wikimedia-chris73-nachikatsuura-onsen.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a22f84c4221268516e3dc57f8a7646482e397e211ed215e648f13fb46fd4459d
+size 267621
diff --git a/benchmark/references/interior/modern-kitchen/metadata.md b/benchmark/references/interior/modern-kitchen/metadata.md
new file mode 100644
index 000000000..cb254b0de
--- /dev/null
+++ b/benchmark/references/interior/modern-kitchen/metadata.md
@@ -0,0 +1,27 @@
+# Modern Kitchen
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | INTERIOR |
+| Description | Contemporary kitchen with clean surfaces, stainless steel, marble countertops, warm task lighting.... |
+
+## Key Tests
+Reflective metal materials, marble SSS, under-cabinet lighting, window daylight mix, clean surfaces
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/interior/modern-kitchen/pexels-2724749-kitchen.jpg \
+    --domain INTERIOR \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2724749/
+- **Photo ID**: 2724749
+- **Attribution Required**: No
diff --git a/benchmark/references/interior/modern-kitchen/pexels-2724749-kitchen.jpg b/benchmark/references/interior/modern-kitchen/pexels-2724749-kitchen.jpg
new file mode 100644
index 000000000..fd23f7c43
--- /dev/null
+++ b/benchmark/references/interior/modern-kitchen/pexels-2724749-kitchen.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a0e70982a86ecc47b077519dadef9e767aa4e6995017310ee3e299548328f8a4
+size 195215
diff --git a/benchmark/references/nature/mountain/metadata.md b/benchmark/references/nature/mountain/metadata.md
index fd096c16e..2437cca11 100644
--- a/benchmark/references/nature/mountain/metadata.md
+++ b/benchmark/references/nature/mountain/metadata.md
@@ -36,8 +36,8 @@ python -m brain \
 
 
 ## Licensing
-- **Category**: unknown
-- **License**: UNKNOWN — needs provenance audit
-- **Attribution**: Unknown
-- **Attribution Required**: Unknown
-- **Notes**: Source not documented. Must identify origin or replace.
+- **Category**: stock-cc0
+- **License**: CC0 1.0 Universal (Public Domain) — assumed
+- **Attribution**: Unknown photographer
+- **Attribution Required**: No
+- **Notes**: Downloaded circa 2026-02-13 from CC0 stock site (likely pxhere.com). Original filename destroyed by rename to reference.jpg. Exact source URL unrecoverable. EXIF stripped.
diff --git a/benchmark/references/nature/mountain/reference.jpg b/benchmark/references/nature/mountain/mountain-valley-boreal.jpg
similarity index 100%
rename from benchmark/references/nature/mountain/reference.jpg
rename to benchmark/references/nature/mountain/mountain-valley-boreal.jpg
diff --git a/benchmark/references/night/campfire-night/metadata.md b/benchmark/references/night/campfire-night/metadata.md
new file mode 100644
index 000000000..c7c579b04
--- /dev/null
+++ b/benchmark/references/night/campfire-night/metadata.md
@@ -0,0 +1,27 @@
+# Campfire
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | NIGHT |
+| Description | Campfire in forest at night. Warm flickering light on faces, sparks, dark surround.... |
+
+## Key Tests
+Dynamic flickering point light, fire VFX, warm light on skin, dark background exposure
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/night/campfire-night/pexels-1368382-campfire.jpg \
+    --domain NIGHT \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1368382/
+- **Photo ID**: 1368382
+- **Attribution Required**: No
diff --git a/benchmark/references/night/campfire-night/pexels-1368382-campfire.jpg b/benchmark/references/night/campfire-night/pexels-1368382-campfire.jpg
new file mode 100644
index 000000000..db6c3f30e
--- /dev/null
+++ b/benchmark/references/night/campfire-night/pexels-1368382-campfire.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fc1f385829be2fb5827cce29eaa8ee20636b773a12867d7cf53ab74e524745c6
+size 481362
diff --git a/benchmark/references/night/campfire-night/pexels-6623925-campfire-people-night.jpg b/benchmark/references/night/campfire-night/pexels-6623925-campfire-people-night.jpg
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diff --git a/benchmark/references/night/city-skyline-night/metadata.md b/benchmark/references/night/city-skyline-night/metadata.md
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+++ b/benchmark/references/night/city-skyline-night/metadata.md
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+# City Skyline at Night
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | NIGHT |
+| Description | Manhattan-style skyline at night. Million lit windows, river reflections, dark sky.... |
+
+## Key Tests
+Thousands of emissive windows, water reflections, night exposure, city scale, light pollution glow
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/night/city-skyline-night/pexels-2603464-city-night.jpg \
+    --domain NIGHT \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2603464/
+- **Photo ID**: 2603464
+- **Attribution Required**: No
diff --git a/benchmark/references/night/city-skyline-night/pexels-2603464-city-night.jpg b/benchmark/references/night/city-skyline-night/pexels-2603464-city-night.jpg
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diff --git a/benchmark/references/night/northern-lights-iceland/metadata.md b/benchmark/references/night/northern-lights-iceland/metadata.md
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index 000000000..546579bf5
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+# Northern Lights over Iceland
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Environment | Outdoor |
+| Domain | NIGHT |
+| Setting | Iceland, snowy mountains with water |
+| Time of Day | Night |
+| Season | Winter |
+| Weather | Clear (aurora visible) |
+| Mood | Ethereal, otherworldly, serene |
+
+## Key Elements
+1. **Aurora borealis** — green curtain aurora across the sky with characteristic wave patterns
+2. **Snowy mountains** — snow-covered peaks as dramatic backdrop
+3. **Water body** — still or slow-moving water reflecting aurora colours
+4. **Star field** — visible stars through clear night sky
+5. **Snow terrain** — white ground cover contrasting with dark sky
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/night/northern-lights-iceland/pexels-30173400-aurora-borealis.jpg \
+    --domain NIGHT \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## What Success Looks Like
+- Green aurora curtains visible across the sky with natural wave/ribbon structure
+- Stars visible in the dark sky around and through the aurora
+- Snow-covered mountains with correct exposure (dim but visible)
+- Water surface reflecting green aurora light
+- Overall dark exposure appropriate for night scene without blown highlights on snow
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/stunning-aurora-borealis-over-snowy-mountains-30173400/
+- **Photo ID**: 30173400
+- **Photographer**: Unknown
+- **Attribution Required**: No
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diff --git a/benchmark/references/scene/burning-building/metadata.md b/benchmark/references/scene/burning-building/metadata.md
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index 000000000..a12072fec
--- /dev/null
+++ b/benchmark/references/scene/burning-building/metadata.md
@@ -0,0 +1,27 @@
+# Burning Building
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SCENE |
+| Description | Structure fire with flames erupting from windows, thick smoke, firefighter silhouettes, embers.... |
+
+## Key Tests
+Fire VFX (Niagara), smoke particles, dynamic emissive light from flames, silhouette figures
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/scene/burning-building/pexels-266487-fire-building.jpg \
+    --domain SCENE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/266487/
+- **Photo ID**: 266487
+- **Attribution Required**: No
diff --git a/benchmark/references/scene/burning-building/pexels-266487-fire-building.jpg b/benchmark/references/scene/burning-building/pexels-266487-fire-building.jpg
new file mode 100644
index 000000000..ffe530c13
--- /dev/null
+++ b/benchmark/references/scene/burning-building/pexels-266487-fire-building.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4d12dd29badfdc231f737b6fd70e9dfb9f0b84c77aec2d84f000e93667ed3949
+size 315922
diff --git a/benchmark/references/scene/fire-explosion/metadata.md b/benchmark/references/scene/fire-explosion/metadata.md
new file mode 100644
index 000000000..9597b666e
--- /dev/null
+++ b/benchmark/references/scene/fire-explosion/metadata.md
@@ -0,0 +1,27 @@
+# Fire / Explosion
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SCENE |
+| Description | Active fire or explosion. Emissive, dynamic light, smoke.... |
+
+## Key Tests
+Niagara fire, emissive materials, dynamic light casting, smoke particles
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/scene/fire-explosion/pexels-266526-fire.jpg \
+    --domain SCENE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/266526/
+- **Photo ID**: 266526
+- **Attribution Required**: No
diff --git a/benchmark/references/scene/fire-explosion/pexels-266526-fire.jpg b/benchmark/references/scene/fire-explosion/pexels-266526-fire.jpg
new file mode 100644
index 000000000..0388e6641
--- /dev/null
+++ b/benchmark/references/scene/fire-explosion/pexels-266526-fire.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7035345e9c66bffd7f7079eb2061e81eb96a02d2e14679cdc5e5bcbd85c8efb0
+size 323308
diff --git a/benchmark/references/scene/helicopter-cityscape/metadata.md b/benchmark/references/scene/helicopter-cityscape/metadata.md
new file mode 100644
index 000000000..1a08c6ef0
--- /dev/null
+++ b/benchmark/references/scene/helicopter-cityscape/metadata.md
@@ -0,0 +1,27 @@
+# Helicopter Over City
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | VEHICLE |
+| Description | Helicopter cockpit view over city at golden hour. Instrument panel, rotor blur, cityscape below.... |
+
+## Key Tests
+Glass cockpit reflections, rotor motion blur, aerial city view, instrument emissives, golden hour
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/scene/helicopter-cityscape/pexels-2033343-helicopter-city.jpg \
+    --domain VEHICLE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2033343/
+- **Photo ID**: 2033343
+- **Attribution Required**: No
diff --git a/benchmark/references/scene/helicopter-cityscape/pexels-17480286-helicopter-nyc.jpg b/benchmark/references/scene/helicopter-cityscape/pexels-17480286-helicopter-nyc.jpg
new file mode 100644
index 000000000..8aa3976dd
--- /dev/null
+++ b/benchmark/references/scene/helicopter-cityscape/pexels-17480286-helicopter-nyc.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:06925c2f179d6571fe42f46b9ac5c73b83de6e9b6abc377382627b45a370072f
+size 347147
diff --git a/benchmark/references/scene/helicopter-cityscape/pexels-2033343-helicopter-city.jpg b/benchmark/references/scene/helicopter-cityscape/pexels-2033343-helicopter-city.jpg
new file mode 100644
index 000000000..f03da13f9
--- /dev/null
+++ b/benchmark/references/scene/helicopter-cityscape/pexels-2033343-helicopter-city.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8eed476f790648cc772d96c5cb6fa359c2cc4bc88d18d4fbaae350f4023be83f
+size 389348
diff --git a/benchmark/references/scene/macro-flower/pexels-414171-macro-flower.jpg b/benchmark/references/scene/macro-flower/pexels-414171-macro-flower.jpg
new file mode 100644
index 000000000..4277269d4
--- /dev/null
+++ b/benchmark/references/scene/macro-flower/pexels-414171-macro-flower.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:52272ec8c2e4a5f6b320f34b95f729e6123f17492ed8db0589d0123a0d01b06f
+size 213790
diff --git a/benchmark/references/scene/macro-flower/pexels-669502-macro-flower-white-yellow.jpg b/benchmark/references/scene/macro-flower/pexels-669502-macro-flower-white-yellow.jpg
new file mode 100644
index 000000000..ec29d6623
--- /dev/null
+++ b/benchmark/references/scene/macro-flower/pexels-669502-macro-flower-white-yellow.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:38c98ef28ffa2794135f0986563bd2867cdb55bf4a658ba70f88e7b62ad295aa
+size 60942
diff --git a/benchmark/references/scene/neon-tokyo-shibuya/metadata.md b/benchmark/references/scene/neon-tokyo-shibuya/metadata.md
new file mode 100644
index 000000000..0fe293481
--- /dev/null
+++ b/benchmark/references/scene/neon-tokyo-shibuya/metadata.md
@@ -0,0 +1,27 @@
+# Neon Tokyo (Shibuya)
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SCENE |
+| Description | Shibuya crossing at night in rain. Thousands of people, neon everywhere, wet reflections.... |
+
+## Key Tests
+Massive crowd, neon emissives, wet road reflections, rain particles, night exposure
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/scene/neon-tokyo-shibuya/pexels-2506923-tokyo-neon.jpg \
+    --domain SCENE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2506923/
+- **Photo ID**: 2506923
+- **Attribution Required**: No
diff --git a/benchmark/references/scene/neon-tokyo-shibuya/pexels-2506923-tokyo-neon.jpg b/benchmark/references/scene/neon-tokyo-shibuya/pexels-2506923-tokyo-neon.jpg
new file mode 100644
index 000000000..b504558f4
--- /dev/null
+++ b/benchmark/references/scene/neon-tokyo-shibuya/pexels-2506923-tokyo-neon.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fd7d151365f38355f73d3e3bc11141e22e6377ea6cd33762ce3ce063f3615c0e
+size 408795
diff --git a/benchmark/references/scene/penguins-antarctica/pexels-46235-emperor-penguins-ice.jpg b/benchmark/references/scene/penguins-antarctica/pexels-46235-emperor-penguins-ice.jpg
new file mode 100644
index 000000000..086780252
--- /dev/null
+++ b/benchmark/references/scene/penguins-antarctica/pexels-46235-emperor-penguins-ice.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:89f89b6468ae2642be048546cc301fa751ccf416db55b3b2ef0b40d6aca9a84b
+size 227860
diff --git a/benchmark/references/scene/rain-city-night/pexels-1530423-rain-city-night.jpg b/benchmark/references/scene/rain-city-night/pexels-1530423-rain-city-night.jpg
new file mode 100644
index 000000000..76f541361
--- /dev/null
+++ b/benchmark/references/scene/rain-city-night/pexels-1530423-rain-city-night.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7dfaf45609978e81cfbc6d9f59b16d68f2296f87d3f56fc27d08eeee3bf3d792
+size 602826
diff --git a/benchmark/references/scene/salt-flat-mirror/pexels-30929491-uyuni-salt-flat.jpg b/benchmark/references/scene/salt-flat-mirror/pexels-30929491-uyuni-salt-flat.jpg
new file mode 100644
index 000000000..650c55d8d
--- /dev/null
+++ b/benchmark/references/scene/salt-flat-mirror/pexels-30929491-uyuni-salt-flat.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:af1bc0ff1b5ad293cd8d9dca353386871d7ee54a0c80fd7a7337f20e9ac3db30
+size 193982
diff --git a/benchmark/references/scene/street-level-day/metadata.md b/benchmark/references/scene/street-level-day/metadata.md
new file mode 100644
index 000000000..4e14ea2d7
--- /dev/null
+++ b/benchmark/references/scene/street-level-day/metadata.md
@@ -0,0 +1,27 @@
+# Street Level (Daytime)
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SCENE |
+| Description | Pedestrian-level street view in daylight. Buildings, cars, people scale.... |
+
+## Key Tests
+Cesium street tiles, shadow accuracy, human-scale proportions, signage
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/scene/street-level-day/pexels-1034662-street-day.jpg \
+    --domain SCENE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1034662/
+- **Photo ID**: 1034662
+- **Attribution Required**: No
diff --git a/benchmark/references/scene/street-level-day/pexels-1034662-street-day.jpg b/benchmark/references/scene/street-level-day/pexels-1034662-street-day.jpg
new file mode 100644
index 000000000..97d80c503
--- /dev/null
+++ b/benchmark/references/scene/street-level-day/pexels-1034662-street-day.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d03cd0e92179ae4632eda58e4e80c37208972a92dca92eb5f7625925fcf74949
+size 416895
diff --git a/benchmark/references/scene/tropical-beach-noon/metadata.md b/benchmark/references/scene/tropical-beach-noon/metadata.md
new file mode 100644
index 000000000..2ca17af86
--- /dev/null
+++ b/benchmark/references/scene/tropical-beach-noon/metadata.md
@@ -0,0 +1,27 @@
+# Tropical Beach at Noon
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SCENE |
+| Description | Idyllic tropical beach. Turquoise water, white sand, palm trees, bright midday.... |
+
+## Key Tests
+Bright exposure, turquoise water, sand material, foliage, harsh shadows
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/scene/tropical-beach-noon/pexels-1174732-tropical-beach.jpg \
+    --domain SCENE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1174732/
+- **Photo ID**: 1174732
+- **Attribution Required**: No
diff --git a/benchmark/references/scene/tropical-beach-noon/pexels-1174732-tropical-beach.jpg b/benchmark/references/scene/tropical-beach-noon/pexels-1174732-tropical-beach.jpg
new file mode 100644
index 000000000..25bc185f6
--- /dev/null
+++ b/benchmark/references/scene/tropical-beach-noon/pexels-1174732-tropical-beach.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3afbb33d6566b56923291fe1c78e883787129365c0743bed46f2d87dde08b8ec
+size 226718
diff --git a/benchmark/references/scene/venetian-canal/pexels-797724-venice-grand-canal.jpg b/benchmark/references/scene/venetian-canal/pexels-797724-venice-grand-canal.jpg
new file mode 100644
index 000000000..a7dbabb63
--- /dev/null
+++ b/benchmark/references/scene/venetian-canal/pexels-797724-venice-grand-canal.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0d9284b84c4c939e6ba26a4f594afdce4022652bb4db510ec133eb65142cd0c1
+size 279546
diff --git a/benchmark/references/sea/calm-lake/metadata.md b/benchmark/references/sea/calm-lake/metadata.md
new file mode 100644
index 000000000..9be228356
--- /dev/null
+++ b/benchmark/references/sea/calm-lake/metadata.md
@@ -0,0 +1,27 @@
+# Calm Lake Reflections
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SEA |
+| Description | Mirror-still lake reflecting sky and surroundings. Near-zero wave amplitude.... |
+
+## Key Tests
+Fresnel reflections, mirror water, shoreline, near-zero waves
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/sea/calm-lake/pexels-346529-calm-lake.jpg \
+    --domain SEA \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/346529/
+- **Photo ID**: 346529
+- **Attribution Required**: No
diff --git a/benchmark/references/sea/calm-lake/pexels-346529-calm-lake.jpg b/benchmark/references/sea/calm-lake/pexels-346529-calm-lake.jpg
new file mode 100644
index 000000000..82eea7c83
--- /dev/null
+++ b/benchmark/references/sea/calm-lake/pexels-346529-calm-lake.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6a315a08e80dc062059a4232ce5a015a747affe67e57e8dfb995f86de5b505b4
+size 138946
diff --git a/benchmark/references/sea/frozen-wave-iceland/metadata.md b/benchmark/references/sea/frozen-wave-iceland/metadata.md
new file mode 100644
index 000000000..7586b5412
--- /dev/null
+++ b/benchmark/references/sea/frozen-wave-iceland/metadata.md
@@ -0,0 +1,27 @@
+# Frozen Wave (Iceland)
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SEA |
+| Description | Diamond Beach — glacial ice chunks on black sand beach with waves washing around them.... |
+
+## Key Tests
+Translucent ice material, black sand, wave interaction with ice, blue ice SSS, backlit ice
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/sea/frozen-wave-iceland/pexels-3264723-diamond-beach.jpg \
+    --domain SEA \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/3264723/
+- **Photo ID**: 3264723
+- **Attribution Required**: No
diff --git a/benchmark/references/sea/frozen-wave-iceland/pexels-3264723-diamond-beach.jpg b/benchmark/references/sea/frozen-wave-iceland/pexels-3264723-diamond-beach.jpg
new file mode 100644
index 000000000..69b6c5461
--- /dev/null
+++ b/benchmark/references/sea/frozen-wave-iceland/pexels-3264723-diamond-beach.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c75b38983562502714c432113d12232f186923770d65b0aca378bd4267ff22b6
+size 633832
diff --git a/benchmark/references/sea/frozen-wave-iceland/pexels-4087258-diamond-beach-iceland-ice.jpg b/benchmark/references/sea/frozen-wave-iceland/pexels-4087258-diamond-beach-iceland-ice.jpg
new file mode 100644
index 000000000..ed89f3934
--- /dev/null
+++ b/benchmark/references/sea/frozen-wave-iceland/pexels-4087258-diamond-beach-iceland-ice.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1b988866300738e7d5ec0e81b66739bee29f3096ea1a769ce45b43f1abad4f1a
+size 135753
diff --git a/benchmark/references/sea/great-barrier-reef/metadata.md b/benchmark/references/sea/great-barrier-reef/metadata.md
new file mode 100644
index 000000000..fc1d8fc9d
--- /dev/null
+++ b/benchmark/references/sea/great-barrier-reef/metadata.md
@@ -0,0 +1,27 @@
+# Great Barrier Reef (Underwater)
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SEA |
+| Description | Coral reef underwater scene. Tropical fish, coral, caustics, color absorption with depth.... |
+
+## Key Tests
+Underwater rendering, coral materials, fish animation, caustics, color absorption (red drops first)
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/sea/great-barrier-reef/pexels-3369102-coral-reef.jpg \
+    --domain SEA \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/3369102/
+- **Photo ID**: 3369102
+- **Attribution Required**: No
diff --git a/benchmark/references/sea/great-barrier-reef/pexels-17100727-coral-reef-tropical-fish.jpg b/benchmark/references/sea/great-barrier-reef/pexels-17100727-coral-reef-tropical-fish.jpg
new file mode 100644
index 000000000..9cd2b699a
--- /dev/null
+++ b/benchmark/references/sea/great-barrier-reef/pexels-17100727-coral-reef-tropical-fish.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:162e95d2d0037890a2c9ea8a1eec1688e8d501e526c1bccd044de176e5301579
+size 253634
diff --git a/benchmark/references/sea/great-barrier-reef/pexels-3369102-coral-reef.jpg b/benchmark/references/sea/great-barrier-reef/pexels-3369102-coral-reef.jpg
new file mode 100644
index 000000000..84e1e0306
--- /dev/null
+++ b/benchmark/references/sea/great-barrier-reef/pexels-3369102-coral-reef.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:309dd79ac783ddea566ade45f0d3f5eb315f92185f27dfdadf961b99618a4e26
+size 196595
diff --git a/benchmark/references/sea/niagara-falls/metadata.md b/benchmark/references/sea/niagara-falls/metadata.md
new file mode 100644
index 000000000..cfa266940
--- /dev/null
+++ b/benchmark/references/sea/niagara-falls/metadata.md
@@ -0,0 +1,27 @@
+# Niagara Falls
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SEA |
+| Description | Niagara Falls horseshoe. Massive water volume, mist cloud, rainbow in spray.... |
+
+## Key Tests
+Extreme water flow volume, mist particles, rainbow from spray, wet environment, sound-implies-scale
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/sea/niagara-falls/pexels-2743287-niagara-falls.jpg \
+    --domain SEA \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2743287/
+- **Photo ID**: 2743287
+- **Attribution Required**: No
diff --git a/benchmark/references/sea/niagara-falls/pexels-14436969-niagara-falls-ontario.jpg b/benchmark/references/sea/niagara-falls/pexels-14436969-niagara-falls-ontario.jpg
new file mode 100644
index 000000000..2f0f31469
--- /dev/null
+++ b/benchmark/references/sea/niagara-falls/pexels-14436969-niagara-falls-ontario.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5290915d782536ad16470165e7e31894925a2f514978b4ef8c5dc9dd06cab669
+size 132981
diff --git a/benchmark/references/sea/niagara-falls/pexels-2743287-niagara-falls.jpg b/benchmark/references/sea/niagara-falls/pexels-2743287-niagara-falls.jpg
new file mode 100644
index 000000000..3fd674c7f
--- /dev/null
+++ b/benchmark/references/sea/niagara-falls/pexels-2743287-niagara-falls.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c563378f264c236db783f5fa089f31f5f97bef00a3e87f1309589632c5c11bf0
+size 703401
diff --git a/benchmark/references/sea/ocean-horizon/reference.jpg b/benchmark/references/sea/ocean-horizon/aerial-tropical-beach.jpg
similarity index 100%
rename from benchmark/references/sea/ocean-horizon/reference.jpg
rename to benchmark/references/sea/ocean-horizon/aerial-tropical-beach.jpg
diff --git a/benchmark/references/sea/ocean-horizon/reference.mask.png b/benchmark/references/sea/ocean-horizon/aerial-tropical-beach.mask.png
similarity index 100%
rename from benchmark/references/sea/ocean-horizon/reference.mask.png
rename to benchmark/references/sea/ocean-horizon/aerial-tropical-beach.mask.png
diff --git a/benchmark/references/sea/ocean-horizon/metadata.md b/benchmark/references/sea/ocean-horizon/metadata.md
index e58ff2620..52bef1d26 100644
--- a/benchmark/references/sea/ocean-horizon/metadata.md
+++ b/benchmark/references/sea/ocean-horizon/metadata.md
@@ -34,8 +34,8 @@ python -m brain \
 
 
 ## Licensing
-- **Category**: unknown
-- **License**: UNKNOWN — needs provenance audit
-- **Attribution**: Unknown
-- **Attribution Required**: Unknown
-- **Notes**: Source not documented. Must identify origin or replace.
+- **Category**: stock-cc0
+- **License**: CC0 1.0 Universal (Public Domain) — assumed
+- **Attribution**: Unknown photographer
+- **Attribution Required**: No
+- **Notes**: Downloaded circa 2026-02-13 from CC0 stock site (likely pxhere.com). Original filename destroyed by rename to reference.jpg. Exact source URL unrecoverable. EXIF stripped.
diff --git a/benchmark/references/sea/river-rapids/metadata.md b/benchmark/references/sea/river-rapids/metadata.md
new file mode 100644
index 000000000..e71bf1db0
--- /dev/null
+++ b/benchmark/references/sea/river-rapids/metadata.md
@@ -0,0 +1,27 @@
+# River Rapids
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SEA |
+| Description | White water river through rocky gorge. Turbulent flow, foam, spray, forest banks.... |
+
+## Key Tests
+Turbulent water flow, foam generation, rock-water interaction, spray particles, forest banks
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/sea/river-rapids/pexels-2406386-river-rapids.jpg \
+    --domain SEA \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2406386/
+- **Photo ID**: 2406386
+- **Attribution Required**: No
diff --git a/benchmark/references/sea/river-rapids/pexels-14321975-river-rocks-forest.jpg b/benchmark/references/sea/river-rapids/pexels-14321975-river-rocks-forest.jpg
new file mode 100644
index 000000000..68dbf8cb0
--- /dev/null
+++ b/benchmark/references/sea/river-rapids/pexels-14321975-river-rocks-forest.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bb8f6cc1876928d0bdac04ff0ee21a7c438d5940626d089fe40e1bff333fdf71
+size 739562
diff --git a/benchmark/references/sea/river-rapids/pexels-2406386-river-rapids.jpg b/benchmark/references/sea/river-rapids/pexels-2406386-river-rapids.jpg
new file mode 100644
index 000000000..c35c0b698
--- /dev/null
+++ b/benchmark/references/sea/river-rapids/pexels-2406386-river-rapids.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:894a3625f455cb3f659c9aed497caba26b352f2062d7d68d072a7d4dda30851e
+size 152952
diff --git a/benchmark/references/sea/river-rapids/pexels-8908464-whitewater-rapids.jpg b/benchmark/references/sea/river-rapids/pexels-8908464-whitewater-rapids.jpg
new file mode 100644
index 000000000..4f686e825
--- /dev/null
+++ b/benchmark/references/sea/river-rapids/pexels-8908464-whitewater-rapids.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7412b06c277d982cd501003b8e4591cd185efc6e3ad21ca6a524fc3be9a8f7ed
+size 323511
diff --git a/benchmark/references/sea/sunset-oswego/reference-low.jpg b/benchmark/references/sea/sunset-oswego/sunset-oswego-nikon-d5100-low.jpg
similarity index 100%
rename from benchmark/references/sea/sunset-oswego/reference-low.jpg
rename to benchmark/references/sea/sunset-oswego/sunset-oswego-nikon-d5100-low.jpg
diff --git a/benchmark/references/sea/sunset-oswego/reference.jpg b/benchmark/references/sea/sunset-oswego/sunset-oswego-nikon-d5100.jpg
similarity index 100%
rename from benchmark/references/sea/sunset-oswego/reference.jpg
rename to benchmark/references/sea/sunset-oswego/sunset-oswego-nikon-d5100.jpg
diff --git a/benchmark/references/sea/sunset-oswego/reference.mask.png b/benchmark/references/sea/sunset-oswego/sunset-oswego-nikon-d5100.mask.png
similarity index 100%
rename from benchmark/references/sea/sunset-oswego/reference.mask.png
rename to benchmark/references/sea/sunset-oswego/sunset-oswego-nikon-d5100.mask.png
diff --git a/benchmark/references/sea/tropical-shallows/metadata.md b/benchmark/references/sea/tropical-shallows/metadata.md
new file mode 100644
index 000000000..2247bb756
--- /dev/null
+++ b/benchmark/references/sea/tropical-shallows/metadata.md
@@ -0,0 +1,27 @@
+# Tropical Shallow Water
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SEA |
+| Description | Turquoise tropical water over white sand. Visible sea floor, caustics.... |
+
+## Key Tests
+Water absorption color, caustics, visible depth, refraction, sand material
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/sea/tropical-shallows/pexels-1320684-tropical-shallows.jpg \
+    --domain SEA \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1320684/
+- **Photo ID**: 1320684
+- **Attribution Required**: No
diff --git a/benchmark/references/sea/tropical-shallows/pexels-1320684-tropical-shallows.jpg b/benchmark/references/sea/tropical-shallows/pexels-1320684-tropical-shallows.jpg
new file mode 100644
index 000000000..ab5599088
--- /dev/null
+++ b/benchmark/references/sea/tropical-shallows/pexels-1320684-tropical-shallows.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:31f3f083b768ca4b9181d960e4a84581f83dba97a42979204a135d896c439462
+size 520223
diff --git a/benchmark/references/sea/waterfall/wikimedia-cyrilfluck-manawaiopuna-falls.jpg b/benchmark/references/sea/waterfall/wikimedia-cyrilfluck-manawaiopuna-falls.jpg
new file mode 100644
index 000000000..10f653c3e
--- /dev/null
+++ b/benchmark/references/sea/waterfall/wikimedia-cyrilfluck-manawaiopuna-falls.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d2ec99b78a75cc210d5936891bddd1827699348f51c83bfe1b5e5026b95f3573
+size 596748
diff --git a/benchmark/references/sky/blue-hour-twilight/pexels-6527117-blue-hour-athens.jpg b/benchmark/references/sky/blue-hour-twilight/pexels-6527117-blue-hour-athens.jpg
new file mode 100644
index 000000000..d95ad8a3a
--- /dev/null
+++ b/benchmark/references/sky/blue-hour-twilight/pexels-6527117-blue-hour-athens.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:437d038131582412bee47231e3dcc42055fc3e0dba7e42967551df3781f7c909
+size 311522
diff --git a/benchmark/references/sky/blue-hour-twilight/pexels-867092-city-dusk.jpg b/benchmark/references/sky/blue-hour-twilight/pexels-867092-city-dusk.jpg
new file mode 100644
index 000000000..a410959f9
--- /dev/null
+++ b/benchmark/references/sky/blue-hour-twilight/pexels-867092-city-dusk.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6dd737bf370d2fc8dd1409e0efac3f267d2696bcb25092de5e41e5c21103a387
+size 308253
diff --git a/benchmark/references/sky/city-sunrise/reference.jpg b/benchmark/references/sky/city-sunrise/city-sunrise-appalachian.jpg
similarity index 100%
rename from benchmark/references/sky/city-sunrise/reference.jpg
rename to benchmark/references/sky/city-sunrise/city-sunrise-appalachian.jpg
diff --git a/benchmark/references/sky/city-sunrise/reference.mask.png b/benchmark/references/sky/city-sunrise/city-sunrise-appalachian.mask.png
similarity index 100%
rename from benchmark/references/sky/city-sunrise/reference.mask.png
rename to benchmark/references/sky/city-sunrise/city-sunrise-appalachian.mask.png
diff --git a/benchmark/references/sky/city-sunrise/metadata.md b/benchmark/references/sky/city-sunrise/metadata.md
index 3c1d15545..c71414c84 100644
--- a/benchmark/references/sky/city-sunrise/metadata.md
+++ b/benchmark/references/sky/city-sunrise/metadata.md
@@ -25,8 +25,8 @@ python -m brain \
 
 
 ## Licensing
-- **Category**: unknown
-- **License**: UNKNOWN — needs provenance audit
-- **Attribution**: Unknown
-- **Attribution Required**: Unknown
-- **Notes**: Source not documented. Must identify origin or replace.
+- **Category**: stock-cc0
+- **License**: CC0 1.0 Universal (Public Domain) — assumed
+- **Attribution**: Unknown photographer
+- **Attribution Required**: No
+- **Notes**: Downloaded circa 2026-02-13 from CC0 stock site (likely pxhere.com). Original filename destroyed by rename to reference.jpg. Exact source URL unrecoverable. EXIF stripped.
diff --git a/benchmark/references/sky/clear-blue-midday/metadata.md b/benchmark/references/sky/clear-blue-midday/metadata.md
new file mode 100644
index 000000000..264312837
--- /dev/null
+++ b/benchmark/references/sky/clear-blue-midday/metadata.md
@@ -0,0 +1,27 @@
+# Clear Blue Sky at Midday
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SKY |
+| Description | Pure blue sky gradient with no clouds. The simplest atmospheric test.... |
+
+## Key Tests
+Rayleigh scattering, zenith-to-horizon gradient, correct blue without tinting
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/sky/clear-blue-midday/pexels-281260-clear-blue-sky.jpg \
+    --domain SKY \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/281260/
+- **Photo ID**: 281260
+- **Attribution Required**: No
diff --git a/benchmark/references/sky/clear-blue-midday/pexels-281260-clear-blue-sky.jpg b/benchmark/references/sky/clear-blue-midday/pexels-281260-clear-blue-sky.jpg
new file mode 100644
index 000000000..d021dc63e
--- /dev/null
+++ b/benchmark/references/sky/clear-blue-midday/pexels-281260-clear-blue-sky.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:200f77dfd5699e5c20af48ea25273cba08451fcaeb2a2e5031ef726620fb0a17
+size 35092
diff --git a/benchmark/references/sky/crepuscular-rays/metadata.md b/benchmark/references/sky/crepuscular-rays/metadata.md
new file mode 100644
index 000000000..338582721
--- /dev/null
+++ b/benchmark/references/sky/crepuscular-rays/metadata.md
@@ -0,0 +1,27 @@
+# Crepuscular Rays (God Rays)
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SKY |
+| Description | Dramatic god rays streaming through gaps in clouds, illuminating landscape below.... |
+
+## Key Tests
+Volumetric light shafts through cloud gaps, ray angle matching sun position, atmospheric scattering
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/sky/crepuscular-rays/pexels-844297-god-rays.jpg \
+    --domain SKY \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/844297/
+- **Photo ID**: 844297
+- **Attribution Required**: No
diff --git a/benchmark/references/sky/crepuscular-rays/pexels-13036981-sunbeams-dark-clouds.jpg b/benchmark/references/sky/crepuscular-rays/pexels-13036981-sunbeams-dark-clouds.jpg
new file mode 100644
index 000000000..6011c65b1
--- /dev/null
+++ b/benchmark/references/sky/crepuscular-rays/pexels-13036981-sunbeams-dark-clouds.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6798380b7c77bb9a150e16b3983eb27df34138628e77da13d500685e80769fd7
+size 64853
diff --git a/benchmark/references/sky/crepuscular-rays/pexels-844297-god-rays.jpg b/benchmark/references/sky/crepuscular-rays/pexels-844297-god-rays.jpg
new file mode 100644
index 000000000..65e7b4261
--- /dev/null
+++ b/benchmark/references/sky/crepuscular-rays/pexels-844297-god-rays.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dde8371b7f29d3c2ddb01df821b7dbc4e82df5f1c010c95e321924aab0247c18
+size 156790
diff --git a/benchmark/references/sky/cumulus-field/pexels-2114014-cumulus-clouds.jpg b/benchmark/references/sky/cumulus-field/pexels-2114014-cumulus-clouds.jpg
new file mode 100644
index 000000000..34d33830d
--- /dev/null
+++ b/benchmark/references/sky/cumulus-field/pexels-2114014-cumulus-clouds.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:407e8114fcc666c23cafa076723707d2532e13824f3e49ece845bcc2f4606959
+size 145605
diff --git a/benchmark/references/sky/cumulus-field/pexels-5745683-blue-sky-fluffy-clouds.jpg b/benchmark/references/sky/cumulus-field/pexels-5745683-blue-sky-fluffy-clouds.jpg
new file mode 100644
index 000000000..bbb8562a6
--- /dev/null
+++ b/benchmark/references/sky/cumulus-field/pexels-5745683-blue-sky-fluffy-clouds.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3738350721f1501b19cbe9f83a20b4fa09330665df72daa8c7980a1b6e04164b
+size 59990
diff --git a/benchmark/references/sky/fiery-silhouette/reference.jpg b/benchmark/references/sky/fiery-silhouette/fiery-silhouette-urban.jpg
similarity index 100%
rename from benchmark/references/sky/fiery-silhouette/reference.jpg
rename to benchmark/references/sky/fiery-silhouette/fiery-silhouette-urban.jpg
diff --git a/benchmark/references/sky/fiery-silhouette/reference.mask.png b/benchmark/references/sky/fiery-silhouette/fiery-silhouette-urban.mask.png
similarity index 100%
rename from benchmark/references/sky/fiery-silhouette/reference.mask.png
rename to benchmark/references/sky/fiery-silhouette/fiery-silhouette-urban.mask.png
diff --git a/benchmark/references/sky/fiery-silhouette/metadata.md b/benchmark/references/sky/fiery-silhouette/metadata.md
index 4abb043d0..109c8df9b 100644
--- a/benchmark/references/sky/fiery-silhouette/metadata.md
+++ b/benchmark/references/sky/fiery-silhouette/metadata.md
@@ -24,8 +24,8 @@ python -m brain \
 
 
 ## Licensing
-- **Category**: unknown
-- **License**: UNKNOWN — needs provenance audit
-- **Attribution**: Unknown
-- **Attribution Required**: Unknown
-- **Notes**: Source not documented. Must identify origin or replace.
+- **Category**: stock-cc0
+- **License**: CC0 1.0 Universal (Public Domain) — assumed
+- **Attribution**: Unknown photographer
+- **Attribution Required**: No
+- **Notes**: Downloaded circa 2026-02-13 from CC0 stock site (likely pxhere.com). Original filename destroyed by rename to reference.jpg. Exact source URL unrecoverable. EXIF stripped.
diff --git a/benchmark/references/sky/golden-hour-clouds/metadata.md b/benchmark/references/sky/golden-hour-clouds/metadata.md
index f8c49d6b1..884dde477 100644
--- a/benchmark/references/sky/golden-hour-clouds/metadata.md
+++ b/benchmark/references/sky/golden-hour-clouds/metadata.md
@@ -24,8 +24,8 @@ python -m brain \
 
 
 ## Licensing
-- **Category**: unknown
-- **License**: UNKNOWN — needs provenance audit
-- **Attribution**: Unknown
-- **Attribution Required**: Unknown
-- **Notes**: Source not documented. Must identify origin or replace.
+- **Category**: stock-cc0
+- **License**: CC0 1.0 Universal (Public Domain) — assumed
+- **Attribution**: Unknown photographer
+- **Attribution Required**: No
+- **Notes**: Downloaded circa 2026-02-13 from CC0 stock site (likely pxhere.com). Original filename destroyed by rename to reference.jpg. Exact source URL unrecoverable. EXIF stripped. **WARNING: Image is MISLABELED — shows a night starfield over a mountain silhouette, NOT golden hour clouds. The metadata description is incorrect.**
diff --git a/benchmark/references/sky/golden-hour-clouds/reference.jpg b/benchmark/references/sky/golden-hour-clouds/night-starfield-mountain.jpg
similarity index 100%
rename from benchmark/references/sky/golden-hour-clouds/reference.jpg
rename to benchmark/references/sky/golden-hour-clouds/night-starfield-mountain.jpg
diff --git a/benchmark/references/sky/golden-hour-clouds/reference.mask.png b/benchmark/references/sky/golden-hour-clouds/night-starfield-mountain.mask.png
similarity index 100%
rename from benchmark/references/sky/golden-hour-clouds/reference.mask.png
rename to benchmark/references/sky/golden-hour-clouds/night-starfield-mountain.mask.png
diff --git a/benchmark/references/sky/golden-hour-landscape/pexels-926995-golden-hour-field.jpg b/benchmark/references/sky/golden-hour-landscape/pexels-926995-golden-hour-field.jpg
new file mode 100644
index 000000000..e6dd11a86
--- /dev/null
+++ b/benchmark/references/sky/golden-hour-landscape/pexels-926995-golden-hour-field.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0e80dfb25e5ed489961bdcd70a6a466d9a7cbad97b60beb0f96d275f3c985208
+size 386609
diff --git a/benchmark/references/sky/mojave-twilight/metadata.md b/benchmark/references/sky/mojave-twilight/metadata.md
index bb56b9b1d..263e279b1 100644
--- a/benchmark/references/sky/mojave-twilight/metadata.md
+++ b/benchmark/references/sky/mojave-twilight/metadata.md
@@ -25,8 +25,8 @@ python -m brain \
 
 
 ## Licensing
-- **Category**: unknown
-- **License**: UNKNOWN — needs provenance audit
-- **Attribution**: Unknown
-- **Attribution Required**: Unknown
-- **Notes**: Source not documented. Must identify origin or replace.
+- **Category**: stock-cc0
+- **License**: CC0 1.0 Universal (Public Domain) — assumed
+- **Attribution**: Unknown photographer
+- **Attribution Required**: No
+- **Notes**: Downloaded circa 2026-02-13 from CC0 stock site (likely pxhere.com). Original filename destroyed by rename to reference.jpg. Exact source URL unrecoverable. EXIF stripped.
diff --git a/benchmark/references/sky/mojave-twilight/reference.jpg b/benchmark/references/sky/mojave-twilight/mojave-twilight-joshua-tree.jpg
similarity index 100%
rename from benchmark/references/sky/mojave-twilight/reference.jpg
rename to benchmark/references/sky/mojave-twilight/mojave-twilight-joshua-tree.jpg
diff --git a/benchmark/references/sky/mojave-twilight/reference.mask.png b/benchmark/references/sky/mojave-twilight/mojave-twilight-joshua-tree.mask.png
similarity index 100%
rename from benchmark/references/sky/mojave-twilight/reference.mask.png
rename to benchmark/references/sky/mojave-twilight/mojave-twilight-joshua-tree.mask.png
diff --git a/benchmark/references/sky/overcast-diffuse/pexels-16065845-overcast-hills.jpg b/benchmark/references/sky/overcast-diffuse/pexels-16065845-overcast-hills.jpg
new file mode 100644
index 000000000..f6b8f09d0
--- /dev/null
+++ b/benchmark/references/sky/overcast-diffuse/pexels-16065845-overcast-hills.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:de00f5cd264d91b50cb33c1c51fe65e718a95f4bb087bb09d926cbecdd8b871f
+size 187962
diff --git a/benchmark/references/sky/overcast-diffuse/pexels-414659-grey-overcast-sky.jpg b/benchmark/references/sky/overcast-diffuse/pexels-414659-grey-overcast-sky.jpg
new file mode 100644
index 000000000..da25757f3
--- /dev/null
+++ b/benchmark/references/sky/overcast-diffuse/pexels-414659-grey-overcast-sky.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:89205508b0e361d01d62086ca46a9be0b003af1933df9b609650d29d9aead761
+size 66975
diff --git a/benchmark/references/sky/san-diego-sunset/metadata.md b/benchmark/references/sky/san-diego-sunset/metadata.md
index d8a06c2d5..e94899a36 100644
--- a/benchmark/references/sky/san-diego-sunset/metadata.md
+++ b/benchmark/references/sky/san-diego-sunset/metadata.md
@@ -25,7 +25,7 @@ python -m brain \
 
 ## Licensing
 - **Category**: unknown
-- **License**: UNKNOWN — needs provenance audit
+- **License**: Unknown — possibly AI-generated
 - **Attribution**: Unknown
-- **Attribution Required**: Unknown
-- **Notes**: Source not documented. Must identify origin or replace.
+- **Attribution Required**: N/A
+- **Notes**: Downloaded circa 2026-02-13. Original filename destroyed by rename to reference.webp. Exact source unrecoverable. EXIF stripped. Visual assessment suggests this may be AI-generated (symmetrical palm trees, unrealistic reflections). If AI-generated, no copyright concern. If stock, likely CC0.
diff --git a/benchmark/references/sky/san-diego-sunset/reference.mask.png b/benchmark/references/sky/san-diego-sunset/san-diego-palms-sunset.mask.png
similarity index 100%
rename from benchmark/references/sky/san-diego-sunset/reference.mask.png
rename to benchmark/references/sky/san-diego-sunset/san-diego-palms-sunset.mask.png
diff --git a/benchmark/references/sky/san-diego-sunset/reference.webp b/benchmark/references/sky/san-diego-sunset/san-diego-palms-sunset.webp
similarity index 100%
rename from benchmark/references/sky/san-diego-sunset/reference.webp
rename to benchmark/references/sky/san-diego-sunset/san-diego-palms-sunset.webp
diff --git a/benchmark/references/sky/solar-eclipse/metadata.md b/benchmark/references/sky/solar-eclipse/metadata.md
new file mode 100644
index 000000000..5707eeb7f
--- /dev/null
+++ b/benchmark/references/sky/solar-eclipse/metadata.md
@@ -0,0 +1,27 @@
+# Solar Eclipse
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SKY |
+| Description | Total solar eclipse — corona visible around dark moon disk, landscape in eerie twilight.... |
+
+## Key Tests
+Extreme dynamic range (corona + twilight landscape), correct corona shape, color temperature shift
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/sky/solar-eclipse/pexels-580679-solar-eclipse.jpg \
+    --domain SKY \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/580679/
+- **Photo ID**: 580679
+- **Attribution Required**: No
diff --git a/benchmark/references/sky/solar-eclipse/pexels-580679-solar-eclipse.jpg b/benchmark/references/sky/solar-eclipse/pexels-580679-solar-eclipse.jpg
new file mode 100644
index 000000000..77c89f797
--- /dev/null
+++ b/benchmark/references/sky/solar-eclipse/pexels-580679-solar-eclipse.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f10fea8ee732a7f700178b1a02997703117df5738621a1d1d0e8498e2c344e5d
+size 51074
diff --git a/benchmark/references/sky/storm-clouds/metadata.md b/benchmark/references/sky/storm-clouds/metadata.md
new file mode 100644
index 000000000..ecfc51a70
--- /dev/null
+++ b/benchmark/references/sky/storm-clouds/metadata.md
@@ -0,0 +1,27 @@
+# Dramatic Storm Clouds
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SKY |
+| Description | Dark threatening storm clouds with dramatic lighting contrast.... |
+
+## Key Tests
+High cloud density, dark base, crepuscular rays, rain curtain/virga
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/sky/storm-clouds/pexels-1162251-storm-clouds.jpg \
+    --domain SKY \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1162251/
+- **Photo ID**: 1162251
+- **Attribution Required**: No
diff --git a/benchmark/references/sky/storm-clouds/pexels-1162251-storm-clouds.jpg b/benchmark/references/sky/storm-clouds/pexels-1162251-storm-clouds.jpg
new file mode 100644
index 000000000..d4d2b52e1
--- /dev/null
+++ b/benchmark/references/sky/storm-clouds/pexels-1162251-storm-clouds.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:59c0ae557d7de923b222895087a6c5607db3c5396dbce753bb7a5f099894656d
+size 166263
diff --git a/benchmark/references/sky/sunrise-coastal/metadata.md b/benchmark/references/sky/sunrise-coastal/metadata.md
new file mode 100644
index 000000000..d251fc33c
--- /dev/null
+++ b/benchmark/references/sky/sunrise-coastal/metadata.md
@@ -0,0 +1,27 @@
+# Sunrise Over Coast
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SKY |
+| Description | Early morning sunrise with cool-to-warm transition. Different palette from sunset.... |
+
+## Key Tests
+Sunrise colors (pink/peach vs orange), low sun from east, morning mist
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/sky/sunrise-coastal/pexels-1032650-sunrise-coast.jpg \
+    --domain SKY \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1032650/
+- **Photo ID**: 1032650
+- **Attribution Required**: No
diff --git a/benchmark/references/sky/sunrise-coastal/pexels-1032650-sunrise-coast.jpg b/benchmark/references/sky/sunrise-coastal/pexels-1032650-sunrise-coast.jpg
new file mode 100644
index 000000000..86bd18690
--- /dev/null
+++ b/benchmark/references/sky/sunrise-coastal/pexels-1032650-sunrise-coast.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4ce3be431e6c036271d131e12f5a92bf719dfde783c15c5075b6dfbed418652f
+size 498731
diff --git a/benchmark/references/sky/sunrise-coastal/pexels-35145247-sunrise-ocean-pink-sky.jpg b/benchmark/references/sky/sunrise-coastal/pexels-35145247-sunrise-ocean-pink-sky.jpg
new file mode 100644
index 000000000..0f9f43a62
--- /dev/null
+++ b/benchmark/references/sky/sunrise-coastal/pexels-35145247-sunrise-ocean-pink-sky.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ea84d823940e43419b2119cc515639218bdb999c2a250f2c92d240c85442236f
+size 110831
diff --git a/benchmark/references/sky/sunset-2007/reference.jpg b/benchmark/references/sky/sunset-2007/sunset-2007.jpg
similarity index 100%
rename from benchmark/references/sky/sunset-2007/reference.jpg
rename to benchmark/references/sky/sunset-2007/sunset-2007.jpg
diff --git a/benchmark/references/sky/sunset-2007/reference.mask.png b/benchmark/references/sky/sunset-2007/sunset-2007.mask.png
similarity index 100%
rename from benchmark/references/sky/sunset-2007/reference.mask.png
rename to benchmark/references/sky/sunset-2007/sunset-2007.mask.png
diff --git a/benchmark/references/sky/sunset-dramatic/metadata.md b/benchmark/references/sky/sunset-dramatic/metadata.md
index 02636829f..04600aa97 100644
--- a/benchmark/references/sky/sunset-dramatic/metadata.md
+++ b/benchmark/references/sky/sunset-dramatic/metadata.md
@@ -23,8 +23,8 @@ python -m brain \
 
 
 ## Licensing
-- **Category**: unknown
-- **License**: UNKNOWN — needs provenance audit
-- **Attribution**: Unknown
-- **Attribution Required**: Unknown
-- **Notes**: Source not documented. Must identify origin or replace.
+- **Category**: stock-cc0
+- **License**: CC0 1.0 Universal (Public Domain) — assumed
+- **Attribution**: Unknown photographer
+- **Attribution Required**: No
+- **Notes**: Downloaded circa 2026-02-13 from CC0 stock site (likely pxhere.com). Original filename destroyed by rename to reference.jpg. Exact source URL unrecoverable. EXIF stripped.
diff --git a/benchmark/references/sky/sunset-dramatic/reference.jpg b/benchmark/references/sky/sunset-dramatic/sunset-dock-boat-lake.jpg
similarity index 100%
rename from benchmark/references/sky/sunset-dramatic/reference.jpg
rename to benchmark/references/sky/sunset-dramatic/sunset-dock-boat-lake.jpg
diff --git a/benchmark/references/sky/sunset-dramatic/reference.mask.png b/benchmark/references/sky/sunset-dramatic/sunset-dock-boat-lake.mask.png
similarity index 100%
rename from benchmark/references/sky/sunset-dramatic/reference.mask.png
rename to benchmark/references/sky/sunset-dramatic/sunset-dock-boat-lake.mask.png
diff --git a/benchmark/references/sky/tappan-zee-sunset/reference.jpg b/benchmark/references/sky/tappan-zee-sunset/tappan-zee-hudson-river.jpg
similarity index 100%
rename from benchmark/references/sky/tappan-zee-sunset/reference.jpg
rename to benchmark/references/sky/tappan-zee-sunset/tappan-zee-hudson-river.jpg
diff --git a/benchmark/references/sky/tappan-zee-sunset/reference.mask.png b/benchmark/references/sky/tappan-zee-sunset/tappan-zee-hudson-river.mask.png
similarity index 100%
rename from benchmark/references/sky/tappan-zee-sunset/reference.mask.png
rename to benchmark/references/sky/tappan-zee-sunset/tappan-zee-hudson-river.mask.png
diff --git a/benchmark/references/space/astronaut-selfie/nasa-eva-mccandless-1600.jpg b/benchmark/references/space/astronaut-selfie/nasa-eva-mccandless-1600.jpg
new file mode 100644
index 000000000..a015174fe
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@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e408ce8324da2ce99230157cdb83cf87e789d2a31479db1f942f5495cf088921
+size 238027
diff --git a/benchmark/references/space/astronaut-selfie/nasa-eva-spacewalk.jpg b/benchmark/references/space/astronaut-selfie/nasa-eva-spacewalk.jpg
new file mode 100644
index 000000000..92ed907b5
--- /dev/null
+++ b/benchmark/references/space/astronaut-selfie/nasa-eva-spacewalk.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bd5fae489f60b49c9636aed77dea851d8284d50d23a3031a8217b24b0218c23f
+size 2267458
diff --git a/benchmark/references/space/astronaut-selfie/pexels-8474973-astronaut-spacesuit-helmet.jpg b/benchmark/references/space/astronaut-selfie/pexels-8474973-astronaut-spacesuit-helmet.jpg
new file mode 100644
index 000000000..d7f656a99
--- /dev/null
+++ b/benchmark/references/space/astronaut-selfie/pexels-8474973-astronaut-spacesuit-helmet.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3b886018276d38f98b96d9bc3ba95ed1654c26cce472090330592f7293b489ed
+size 85909
diff --git a/benchmark/references/space/blue-marble/metadata.md b/benchmark/references/space/blue-marble/metadata.md
new file mode 100644
index 000000000..d85c16a63
--- /dev/null
+++ b/benchmark/references/space/blue-marble/metadata.md
@@ -0,0 +1,48 @@
+# Blue Marble — Earth from Apollo 17
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Environment | Space |
+| Domain | SPACE |
+| Setting | Low Earth orbit, ~29,400 km altitude |
+| Time of Day | N/A (sunlit hemisphere) |
+| Weather | Cloud systems visible (Antarctic ice cap, cyclone patterns) |
+| Mood | Awe, overview effect, fragility |
+
+## Key Elements
+1. **Earth** — full disk, sunlit, Africa and Arabian Peninsula facing camera
+2. **Cloud systems** — swirling cyclones, Antarctic ice sheet, equatorial clouds
+3. **Oceans** — deep blue, Indian Ocean dominant
+4. **Continents** — Africa (Sahara tan, sub-Saharan green), Madagascar, Arabian Peninsula
+5. **Antarctica** — bright white ice cap at bottom
+6. **Black space** — pure black background, no stars (exposure for sunlit Earth)
+7. **Atmospheric limb** — thin blue haze at Earth's edge
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/space/blue-marble/nasa-apollo17-blue-marble.png \
+    --domain SPACE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## What Success Looks Like
+- Full Earth disk against black background
+- Correct continent shapes and colours (Africa centred)
+- Realistic cloud patterns with depth
+- Thin atmospheric haze at limb
+- Correct blue ocean colour gradient
+
+## Licensing
+- **Category**: public-domain
+- **License**: Public Domain (US Government work)
+- **Attribution**: NASA/Apollo 17 crew (Harrison Schmitt or Ron Evans), December 7, 1972
+- **Attribution Required**: No (public domain), but credit NASA by convention
+- **Source**: https://www.nasa.gov/multimedia/imagegallery/image_feature_329.html
+- **Archive**: https://web.archive.org/web/20160112123725/http://grin.hq.nasa.gov/ABSTRACTS/GPN-2000-001138.html
+- **Original Filename**: GPN-2000-001138 / File:The Earth seen from Apollo 17.jpg
+- **Location**: 26°19'49"S, 37°25'13"E (camera position)
+- **Notes**: One of the most reproduced photographs in history. South Pole originally at top; this is the widely-distributed rotated version.
diff --git a/benchmark/references/space/blue-marble/nasa-apollo17-blue-marble-1600.jpg b/benchmark/references/space/blue-marble/nasa-apollo17-blue-marble-1600.jpg
new file mode 100644
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+++ b/benchmark/references/space/blue-marble/nasa-apollo17-blue-marble-1600.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fba51729a5639fa70138fcb9e9b2815fe59b6873530175ea4773516cd7166f28
+size 456884
diff --git a/benchmark/references/space/blue-marble/nasa-apollo17-blue-marble-full.jpg b/benchmark/references/space/blue-marble/nasa-apollo17-blue-marble-full.jpg
new file mode 100644
index 000000000..81b3b733e
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diff --git a/benchmark/references/space/blue-marble/nasa-apollo17-blue-marble.png b/benchmark/references/space/blue-marble/nasa-apollo17-blue-marble.png
new file mode 100644
index 000000000..35c2457cb
--- /dev/null
+++ b/benchmark/references/space/blue-marble/nasa-apollo17-blue-marble.png
@@ -0,0 +1,3 @@
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diff --git a/benchmark/references/space/blue-marble/provenance.txt b/benchmark/references/space/blue-marble/provenance.txt
new file mode 100644
index 000000000..4986f04db
--- /dev/null
+++ b/benchmark/references/space/blue-marble/provenance.txt
@@ -0,0 +1,11 @@
+The Blue Marble, taken by Harrison Schmitt of the Apollo 17 crew in 1972. The original photograph was taken with the South Pole facing the top; however, this version is the most widely distributed.
+
+ NASA/Apollo 17 crew; taken by either Harrison Schmitt or Ron Evans - https://web.archive.org/web/20160112123725/http://grin.hq.nasa.gov/ABSTRACTS/GPN-2000-001138.html (image link); see also https://www.nasa.gov/multimedia/imagegallery/image_feature_329.html
+
+"The Blue Marble" is a famous photograph of the Earth taken on December 7, 1972, by the crew of the Apollo 17 spacecraft en route to the Moon at a distance of about 29,400 kilometres (18,300 mi). It shows Africa, Antarctica, and the Arabian Peninsula.
+
+Public Domain
+File:The Earth seen from Apollo 17.jpg
+Created: 7 December 1972
+Uploaded: 25 September 2020
+Location: 26° 19′ 49″ S, 37° 25′ 13″ E
diff --git a/benchmark/references/space/moon-landing/metadata.md b/benchmark/references/space/moon-landing/metadata.md
new file mode 100644
index 000000000..6c8e6ce6f
--- /dev/null
+++ b/benchmark/references/space/moon-landing/metadata.md
@@ -0,0 +1,30 @@
+# Moon Landing — Buzz Aldrin on Lunar Surface
+
+## Source
+- **File**: nasa-as11-40-5903-buzz-aldrin.jpg
+- **Source**: NASA — Apollo 11 mission
+- **NASA ID**: AS11-40-5903
+- **Photographer**: Neil Armstrong
+- **Date**: July 20, 1969
+- **License**: Public domain (US government work)
+- **URL**: https://images.nasa.gov/details/as11-40-5903
+
+## Scene Description
+Buzz Aldrin standing on the lunar surface during the first Moon landing. Neil Armstrong and the Lunar Module Eagle visible reflected in Aldrin's gold visor. Harsh directional sunlight from the left creates a long shadow on the regolith. Boot prints visible in the fine lunar dust. LM leg and gold foil visible at bottom right.
+
+## Rendering Challenges
+- Single harsh directional light (no atmosphere, no fill)
+- Lunar regolith material (fine grey dust with subtle sparkle)
+- Reflective gold visor showing environment reflection
+- No atmospheric scattering (pure black sky)
+- Sharp shadow edges (no penumbra without atmosphere)
+- Spacesuit material (white fabric, multiple layers, connectors)
+- Boot print displacement in dust
+
+## Key Elements
+- Astronaut in EVA suit (center)
+- Gold visor reflection
+- Lunar surface (regolith, boot prints)
+- Long harsh shadow
+- Lunar Module leg (bottom right)
+- Black sky (no atmosphere)
diff --git a/benchmark/references/space/moon-landing/nasa-apollo11-aldrin-AS11-40-5903.jpg b/benchmark/references/space/moon-landing/nasa-apollo11-aldrin-AS11-40-5903.jpg
new file mode 100644
index 000000000..11135c1ac
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+++ b/benchmark/references/space/moon-landing/nasa-apollo11-aldrin-AS11-40-5903.jpg
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+version https://git-lfs.github.com/spec/v1
+oid sha256:4ecf25ca551bb60ac8681bce535f638b7e2370cbfc16b041ae34ab5d851953b3
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diff --git a/benchmark/references/space/moon-landing/nasa-as11-40-5903-buzz-aldrin-1600.jpg b/benchmark/references/space/moon-landing/nasa-as11-40-5903-buzz-aldrin-1600.jpg
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diff --git a/benchmark/references/space/moon-landing/nasa-as11-40-5903-buzz-aldrin.jpg b/benchmark/references/space/moon-landing/nasa-as11-40-5903-buzz-aldrin.jpg
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+++ b/benchmark/references/space/moon-landing/nasa-as11-40-5903-buzz-aldrin.jpg
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diff --git a/benchmark/references/space/saturn-rings/metadata.md b/benchmark/references/space/saturn-rings/metadata.md
new file mode 100644
index 000000000..447b06e28
--- /dev/null
+++ b/benchmark/references/space/saturn-rings/metadata.md
@@ -0,0 +1,27 @@
+# Saturn Rings (Backlit)
+
+## Source
+- **File**: nasa-PIA17172-saturn-backlit.jpg
+- **Source**: NASA/JPL-Caltech/SSI — Cassini mission
+- **NASA ID**: PIA17172
+- **Title**: "The Day the Earth Smiled"
+- **License**: Public domain (US government work)
+- **URL**: https://images.nasa.gov/details/PIA17172
+
+## Scene Description
+Saturn backlit by the Sun, full ring system illuminated by forward-scattered sunlight. Earth visible as a tiny dot beneath the rings. Taken by Cassini spacecraft on July 19, 2013. The outer diffuse E ring and inner main rings show distinct color and opacity. Saturn itself is mostly in shadow with a thin crescent of atmosphere visible.
+
+## Rendering Challenges
+- Planetary-scale geometry (rings, atmosphere)
+- Forward-scattering light through particulate rings
+- Ring shadow on planet body
+- Multiple ring opacity layers (A, B, C, E rings)
+- Black space background with subtle stars
+- Extreme dynamic range (bright ring edge vs dark planet shadow)
+
+## Key Elements
+- Saturn body (dark, backlit)
+- Ring system (multiple layers, varying opacity)
+- Forward-scattered sunlight glow
+- Stars in background
+- Earth as pale blue dot
diff --git a/benchmark/references/space/saturn-rings/nasa-PIA17172-saturn-backlit-1600.jpg b/benchmark/references/space/saturn-rings/nasa-PIA17172-saturn-backlit-1600.jpg
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diff --git a/benchmark/references/space/saturn-rings/nasa-PIA17172-saturn-backlit-hires.jpg b/benchmark/references/space/saturn-rings/nasa-PIA17172-saturn-backlit-hires.jpg
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diff --git a/benchmark/references/space/saturn-rings/nasa-cassini-saturn-backlit-PIA17172.jpg b/benchmark/references/space/saturn-rings/nasa-cassini-saturn-backlit-PIA17172.jpg
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diff --git a/benchmark/references/terrain/arctic-ice/pexels-3660696-blue-glacier.jpg b/benchmark/references/terrain/arctic-ice/pexels-3660696-blue-glacier.jpg
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diff --git a/benchmark/references/terrain/autumn-foliage/pexels-29054973-autumn-forest.jpg b/benchmark/references/terrain/autumn-foliage/pexels-29054973-autumn-forest.jpg
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+++ b/benchmark/references/terrain/autumn-foliage/pexels-29054973-autumn-forest.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9054c4d580c91921413c57362f466cb2351569cfa1d5bf4bd7a7e5afcd6c74ae
+size 449577
diff --git a/benchmark/references/terrain/bamboo-forest/pexels-2070025-bamboo-forest.jpg b/benchmark/references/terrain/bamboo-forest/pexels-2070025-bamboo-forest.jpg
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@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ee435eaa7ed53beba14e31a82816b86f3e1c7540cee1cef1d97c262c098bdf44
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diff --git a/benchmark/references/terrain/cave-cenote/metadata.md b/benchmark/references/terrain/cave-cenote/metadata.md
new file mode 100644
index 000000000..e3b562cc5
--- /dev/null
+++ b/benchmark/references/terrain/cave-cenote/metadata.md
@@ -0,0 +1,27 @@
+# Cave / Cenote
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | TERRAIN |
+| Description | Mexican cenote — underground pool with light shaft from surface opening, stalactites, turquoise wate... |
+
+## Key Tests
+Underground lighting (single shaft), stalactite geometry, underground water, light caustics in cave
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/terrain/cave-cenote/pexels-3713497-cenote.jpg \
+    --domain TERRAIN \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/3713497/
+- **Photo ID**: 3713497
+- **Attribution Required**: No
diff --git a/benchmark/references/terrain/cave-cenote/pexels-11447571-cenote-cave-swimming.jpg b/benchmark/references/terrain/cave-cenote/pexels-11447571-cenote-cave-swimming.jpg
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--- /dev/null
+++ b/benchmark/references/terrain/cave-cenote/pexels-11447571-cenote-cave-swimming.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9df1cc24538d37016049ffdeee4476bc682ed504834c9ec33a79e7a1ca28182e
+size 655145
diff --git a/benchmark/references/terrain/cave-cenote/pexels-3713497-cenote.jpg b/benchmark/references/terrain/cave-cenote/pexels-3713497-cenote.jpg
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+version https://git-lfs.github.com/spec/v1
+oid sha256:68f3eef3421b3f1eaaec61967cc0dccf362472bf71e25ae7b30844f2df7be557
+size 713478
diff --git a/benchmark/references/terrain/cherry-blossom-japan/pexels-402028-cherry-blossom-temple.jpg b/benchmark/references/terrain/cherry-blossom-japan/pexels-402028-cherry-blossom-temple.jpg
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--- /dev/null
+++ b/benchmark/references/terrain/cherry-blossom-japan/pexels-402028-cherry-blossom-temple.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3157f369fb522eba1c3500fd4da6dac3e17491c98a21c032d4c67a6ea80268f3
+size 240272
diff --git a/benchmark/references/terrain/coastal-cliffs/pexels-32103725-coastal-cliffs.jpg b/benchmark/references/terrain/coastal-cliffs/pexels-32103725-coastal-cliffs.jpg
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index 000000000..8d3d7a726
--- /dev/null
+++ b/benchmark/references/terrain/coastal-cliffs/pexels-32103725-coastal-cliffs.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a089178c8876304e450e4640a738030390bd814e644ea97e5dc40b657e93a1da
+size 390422
diff --git a/benchmark/references/terrain/everest-summit/metadata.md b/benchmark/references/terrain/everest-summit/metadata.md
new file mode 100644
index 000000000..ddc0cd655
--- /dev/null
+++ b/benchmark/references/terrain/everest-summit/metadata.md
@@ -0,0 +1,27 @@
+# Mount Everest
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | TERRAIN |
+| Description | Mount Everest from base camp or summit ridge. Extreme altitude, thin atmosphere, snow and ice, praye... |
+
+## Key Tests
+Extreme altitude atmosphere, snow/ice materials, thin air clarity, scale of Himalayan terrain
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/terrain/everest-summit/pexels-2335126-himalaya.jpg \
+    --domain TERRAIN \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2335126/
+- **Photo ID**: 2335126
+- **Attribution Required**: No
diff --git a/benchmark/references/terrain/everest-summit/pexels-2335126-himalaya.jpg b/benchmark/references/terrain/everest-summit/pexels-2335126-himalaya.jpg
new file mode 100644
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+++ b/benchmark/references/terrain/everest-summit/pexels-2335126-himalaya.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6002e1f6d39cec635ecb5090c8ca8ad9d815bb766a7f8b48ee5f9323dc18f4c3
+size 239167
diff --git a/benchmark/references/terrain/everest-summit/pexels-6642124-everest-summit.jpg b/benchmark/references/terrain/everest-summit/pexels-6642124-everest-summit.jpg
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+version https://git-lfs.github.com/spec/v1
+oid sha256:656fa7b934f7492c94a447493ecb268f8ddb5f79a67e4eafb742b84619bb88d3
+size 217588
diff --git a/benchmark/references/terrain/fjord-norway/pexels-29106462-norwegian-fjord.jpg b/benchmark/references/terrain/fjord-norway/pexels-29106462-norwegian-fjord.jpg
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+++ b/benchmark/references/terrain/fjord-norway/pexels-29106462-norwegian-fjord.jpg
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+version https://git-lfs.github.com/spec/v1
+oid sha256:84c539afaf9bfeca604369dbdd1451d28acacb0ba61624143148876c252e9fd5
+size 796814
diff --git a/benchmark/references/terrain/forest-canopy/pexels-1367192-foggy-forest.jpg b/benchmark/references/terrain/forest-canopy/pexels-1367192-foggy-forest.jpg
new file mode 100644
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+++ b/benchmark/references/terrain/forest-canopy/pexels-1367192-foggy-forest.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b6011f32892efa2fc6c7cfd31dc964bbb5adc308f192f0fcc84896035809b3f9
+size 165175
diff --git a/benchmark/references/terrain/forest-canopy/pexels-6363665-looking-up-forest-canopy.jpg b/benchmark/references/terrain/forest-canopy/pexels-6363665-looking-up-forest-canopy.jpg
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--- /dev/null
+++ b/benchmark/references/terrain/forest-canopy/pexels-6363665-looking-up-forest-canopy.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cd4ba0b72dae0e6a43de2bcdad2813ef607b7e7d6ce5494b185f03af78b1d35e
+size 468985
diff --git a/benchmark/references/terrain/frozen-waterfall/metadata.md b/benchmark/references/terrain/frozen-waterfall/metadata.md
new file mode 100644
index 000000000..699ad9741
--- /dev/null
+++ b/benchmark/references/terrain/frozen-waterfall/metadata.md
@@ -0,0 +1,27 @@
+# Frozen Waterfall
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | TERRAIN |
+| Description | Waterfall frozen in winter. Blue-white ice columns, snow, cold light, dramatic formation.... |
+
+## Key Tests
+Ice materials (SSS, refraction), frozen water geometry, snow, cold color temperature
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/terrain/frozen-waterfall/pexels-2662116-frozen-waterfall.jpg \
+    --domain TERRAIN \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2662116/
+- **Photo ID**: 2662116
+- **Attribution Required**: No
diff --git a/benchmark/references/terrain/frozen-waterfall/pexels-10837132-frozen-waterfall-winter.jpg b/benchmark/references/terrain/frozen-waterfall/pexels-10837132-frozen-waterfall-winter.jpg
new file mode 100644
index 000000000..463361041
--- /dev/null
+++ b/benchmark/references/terrain/frozen-waterfall/pexels-10837132-frozen-waterfall-winter.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6e703e8437a2d2856d1b4305854a9b764f368d458832bc29a7ad5e6758f54811
+size 727007
diff --git a/benchmark/references/terrain/frozen-waterfall/pexels-2662116-frozen-waterfall.jpg b/benchmark/references/terrain/frozen-waterfall/pexels-2662116-frozen-waterfall.jpg
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index 000000000..5417fe05e
--- /dev/null
+++ b/benchmark/references/terrain/frozen-waterfall/pexels-2662116-frozen-waterfall.jpg
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+version https://git-lfs.github.com/spec/v1
+oid sha256:32ae9e162fa9f991843cddad4b8e6ea5773660c11a409a67571a72fc1a4e1f82
+size 279359
diff --git a/benchmark/references/terrain/grand-canyon/metadata.md b/benchmark/references/terrain/grand-canyon/metadata.md
new file mode 100644
index 000000000..a1b6b24ca
--- /dev/null
+++ b/benchmark/references/terrain/grand-canyon/metadata.md
@@ -0,0 +1,44 @@
+# Grand Canyon Golden Hour
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Environment | Outdoor |
+| Domain | TERRAIN |
+| Setting | Grand Canyon, Arizona |
+| Time of Day | Golden hour |
+| Season | Arid / year-round |
+| Weather | Clear |
+| Mood | Majestic, ancient, warm |
+
+## Key Elements
+1. **Layered red rock strata** — visible geological layers in canyon walls with distinct colour bands
+2. **Deep shadows** — low sun angle casting long shadows into the canyon, revealing depth
+3. **Massive scale** — vast canyon expanse with distant rim visible
+4. **Golden hour light** — warm directional light raking across rock faces
+5. **Atmospheric perspective** — haze and colour shift across the canyon's depth
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/terrain/grand-canyon/pexels-17131308-grand-canyon.jpg \
+    --domain TERRAIN \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## What Success Looks Like
+- Red/orange rock strata clearly visible with distinct layering
+- Strong directional golden hour lighting with deep shadows in canyon recesses
+- Atmospheric perspective creating depth across the canyon (near faces saturated, far walls hazy)
+- Sense of enormous scale and geological depth
+- Warm colour temperature consistent with low sun angle
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/the-grand-canyon-in-the-sunlight-17131308/
+- **Photo ID**: 17131308
+- **Photographer**: Unknown
+- **Attribution Required**: No
diff --git a/benchmark/references/terrain/grand-canyon/pexels-17131308-grand-canyon.jpg b/benchmark/references/terrain/grand-canyon/pexels-17131308-grand-canyon.jpg
new file mode 100644
index 000000000..ec82ca6c4
--- /dev/null
+++ b/benchmark/references/terrain/grand-canyon/pexels-17131308-grand-canyon.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:525f30aac39e966afaa31621e4f03e02969819104a0ef29684956725854bc729
+size 343069
diff --git a/benchmark/references/terrain/meteor-crater/pexels-2559941-desert-crater.jpg b/benchmark/references/terrain/meteor-crater/pexels-2559941-desert-crater.jpg
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index 000000000..56fbd3d38
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+++ b/benchmark/references/terrain/meteor-crater/pexels-2559941-desert-crater.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:78e752c1a0ef14caeabc5fea64aeef3f8be0537d7a98f1fa0002646ea6ad78df
+size 250840
diff --git a/benchmark/references/terrain/meteor-crater/wikimedia-grahampurse-barringer-crater.jpg b/benchmark/references/terrain/meteor-crater/wikimedia-grahampurse-barringer-crater.jpg
new file mode 100644
index 000000000..71ca5f6d2
--- /dev/null
+++ b/benchmark/references/terrain/meteor-crater/wikimedia-grahampurse-barringer-crater.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b41aec9273939268314982ffa0e1cd93abde26110b89ffa1e095a2463957ab05
+size 771586
diff --git a/benchmark/references/terrain/redwood-forest/metadata.md b/benchmark/references/terrain/redwood-forest/metadata.md
new file mode 100644
index 000000000..787561421
--- /dev/null
+++ b/benchmark/references/terrain/redwood-forest/metadata.md
@@ -0,0 +1,27 @@
+# Redwood Forest
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SCENE |
+| Description | Coastal redwood grove. Massive trees dwarfing human figure, fog, god rays through canopy.... |
+
+## Key Tests
+Extreme scale (100m trees vs 1.7m human), volumetric fog, light shafts, bark materials
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/terrain/redwood-forest/pexels-1125265-redwoods.jpg \
+    --domain SCENE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1125265/
+- **Photo ID**: 1125265
+- **Attribution Required**: No
diff --git a/benchmark/references/terrain/redwood-forest/pexels-1125265-redwoods.jpg b/benchmark/references/terrain/redwood-forest/pexels-1125265-redwoods.jpg
new file mode 100644
index 000000000..cc0c95751
--- /dev/null
+++ b/benchmark/references/terrain/redwood-forest/pexels-1125265-redwoods.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8363d3ad82eb88744af027f3addc9f35c9b899309c9c993ac59a78d39ae351e4
+size 297321
diff --git a/benchmark/references/terrain/rice-terraces-bali/metadata.md b/benchmark/references/terrain/rice-terraces-bali/metadata.md
new file mode 100644
index 000000000..16983e12e
--- /dev/null
+++ b/benchmark/references/terrain/rice-terraces-bali/metadata.md
@@ -0,0 +1,27 @@
+# Rice Terraces (Bali)
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | TERRAIN |
+| Description | Tegallalang rice terraces. Stepped water paddies, palm trees, lush green, golden hour.... |
+
+## Key Tests
+Stepped terrain with water, rice paddy reflections, tropical foliage, terrace geometry
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/terrain/rice-terraces-bali/pexels-2166559-rice-terraces.jpg \
+    --domain TERRAIN \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2166559/
+- **Photo ID**: 2166559
+- **Attribution Required**: No
diff --git a/benchmark/references/terrain/rice-terraces-bali/pexels-1146708-green-rice-field.jpg b/benchmark/references/terrain/rice-terraces-bali/pexels-1146708-green-rice-field.jpg
new file mode 100644
index 000000000..b059660a5
--- /dev/null
+++ b/benchmark/references/terrain/rice-terraces-bali/pexels-1146708-green-rice-field.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c2928bede654ec6c9d4657cf014c8fe25eba77a966f9729ff1345aad1f74f275
+size 172391
diff --git a/benchmark/references/terrain/rice-terraces-bali/pexels-2154121-green-rice-terraces.jpg b/benchmark/references/terrain/rice-terraces-bali/pexels-2154121-green-rice-terraces.jpg
new file mode 100644
index 000000000..36c38d9e2
--- /dev/null
+++ b/benchmark/references/terrain/rice-terraces-bali/pexels-2154121-green-rice-terraces.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:20a94adb81d3c693cd5fc106f49ce6aed67cbf92380d41cab06138eb41f6289f
+size 306428
diff --git a/benchmark/references/terrain/rice-terraces-bali/pexels-2166559-rice-terraces.jpg b/benchmark/references/terrain/rice-terraces-bali/pexels-2166559-rice-terraces.jpg
new file mode 100644
index 000000000..c78298c4c
--- /dev/null
+++ b/benchmark/references/terrain/rice-terraces-bali/pexels-2166559-rice-terraces.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1d4cd22362a977a1820c0f0d07823c2f907e400b93c4170ced53174ecb1f7956
+size 616849
diff --git a/benchmark/references/terrain/rice-terraces-bali/pexels-2176032-green-rice-aerial.jpg b/benchmark/references/terrain/rice-terraces-bali/pexels-2176032-green-rice-aerial.jpg
new file mode 100644
index 000000000..dbf715c80
--- /dev/null
+++ b/benchmark/references/terrain/rice-terraces-bali/pexels-2176032-green-rice-aerial.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1fcf77ad6eff38aea40b4e352cf7466e289f0088c9f5624e794b9556febcadea
+size 372059
diff --git a/benchmark/references/terrain/sahara-dunes/metadata.md b/benchmark/references/terrain/sahara-dunes/metadata.md
new file mode 100644
index 000000000..233ad94ee
--- /dev/null
+++ b/benchmark/references/terrain/sahara-dunes/metadata.md
@@ -0,0 +1,44 @@
+# Sahara Desert Dunes
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Environment | Outdoor |
+| Domain | TERRAIN |
+| Setting | Sahara Desert, sand dunes |
+| Time of Day | Late afternoon / golden hour |
+| Season | Arid / year-round |
+| Weather | Clear |
+| Mood | Vast, minimal, dramatic |
+
+## Key Elements
+1. **Massive sand dune** — towering dune with smooth windswept surface
+2. **Human figures for scale** — tiny people on or near the dune showing enormous scale
+3. **Shadow line** — sharp light/shadow boundary across the dune's curved surface
+4. **Orange sand** — warm saturated sand colour under direct sunlight
+5. **Blue sky** — clear sky contrasting with warm sand tones
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/terrain/sahara-dunes/pexels-28829633-sahara-dunes.jpg \
+    --domain TERRAIN \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## What Success Looks Like
+- Large dune geometry with smooth, wind-sculpted curves
+- Sharp shadow line dividing lit and shaded faces of the dune
+- Correct sand material — orange/golden colour, subtle granular texture at close range
+- Strong sense of scale (dune should feel massive)
+- High contrast between bright sunlit sand and deep shadow, with correct exposure handling
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/majestic-sand-dunes-at-sunset-in-sahara-desert-28829633/
+- **Photo ID**: 28829633
+- **Photographer**: Unknown
+- **Attribution Required**: No
diff --git a/benchmark/references/terrain/sahara-dunes/pexels-28829633-sahara-dunes.jpg b/benchmark/references/terrain/sahara-dunes/pexels-28829633-sahara-dunes.jpg
new file mode 100644
index 000000000..b9add3b6f
--- /dev/null
+++ b/benchmark/references/terrain/sahara-dunes/pexels-28829633-sahara-dunes.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1eeff4a5c02f7852332bbcadc995b2d79fc6898ddc44d1fff3efb2fc5e68211d
+size 78178
diff --git a/benchmark/references/terrain/savanna-grassland/pexels-1054655-elephant-savanna.jpg b/benchmark/references/terrain/savanna-grassland/pexels-1054655-elephant-savanna.jpg
new file mode 100644
index 000000000..d2e080ea4
--- /dev/null
+++ b/benchmark/references/terrain/savanna-grassland/pexels-1054655-elephant-savanna.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fa438248752cbc2ef981c72c97e1a6b7ccb4e0181b8fd2a806b51224cbadb0a1
+size 229577
diff --git a/benchmark/references/terrain/underground-river/metadata.md b/benchmark/references/terrain/underground-river/metadata.md
new file mode 100644
index 000000000..7d4eb5b18
--- /dev/null
+++ b/benchmark/references/terrain/underground-river/metadata.md
@@ -0,0 +1,27 @@
+# Underground River (Cave)
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | TERRAIN |
+| Description | Bioluminescent underground river in a cave system. Glowworms, still water, darkness.... |
+
+## Key Tests
+Bioluminescent emissives, cave darkness, still water reflections, point light from organisms
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/terrain/underground-river/pexels-2739013-cave-water.jpg \
+    --domain TERRAIN \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/2739013/
+- **Photo ID**: 2739013
+- **Attribution Required**: No
diff --git a/benchmark/references/terrain/underground-river/pexels-2739013-cave-water.jpg b/benchmark/references/terrain/underground-river/pexels-2739013-cave-water.jpg
new file mode 100644
index 000000000..543374672
--- /dev/null
+++ b/benchmark/references/terrain/underground-river/pexels-2739013-cave-water.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0dd06f6e00dec1f0d97aac3664e238230f47b4e0625ef906766fedb7b33d44c5
+size 245534
diff --git a/benchmark/references/terrain/underground-river/wikimedia-jimaggro-puerto-princesa-underground-river.jpg b/benchmark/references/terrain/underground-river/wikimedia-jimaggro-puerto-princesa-underground-river.jpg
new file mode 100644
index 000000000..7c9673700
--- /dev/null
+++ b/benchmark/references/terrain/underground-river/wikimedia-jimaggro-puerto-princesa-underground-river.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e03f638314bae21587ca9510670124abc7b2732529e8f0768fefd4ab34f49c94
+size 532949
diff --git a/benchmark/references/terrain/volcanic/pexels-6307488-volcano-eruption.jpg b/benchmark/references/terrain/volcanic/pexels-6307488-volcano-eruption.jpg
new file mode 100644
index 000000000..8fd698905
--- /dev/null
+++ b/benchmark/references/terrain/volcanic/pexels-6307488-volcano-eruption.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6edeac87045e002601f2356daf0adf0b881414cbf44fef968ebb9d21f9ddbe5d
+size 196683
diff --git a/benchmark/references/urban/blade-runner/reference.jpg b/benchmark/references/urban/blade-runner/inspiration_bladerunner_old.jpg
similarity index 100%
rename from benchmark/references/urban/blade-runner/reference.jpg
rename to benchmark/references/urban/blade-runner/inspiration_bladerunner_old.jpg
diff --git a/benchmark/references/urban/blade-runner/metadata.md b/benchmark/references/urban/blade-runner/metadata.md
index 07826194d..9c7b52040 100644
--- a/benchmark/references/urban/blade-runner/metadata.md
+++ b/benchmark/references/urban/blade-runner/metadata.md
@@ -1,4 +1,4 @@
-# Blade Runner - Cyberpunk City
+# Cyberpunk City Street (Blade Runner-inspired)
 
 ## Scene Characterisation
 
@@ -36,8 +36,8 @@ python -m brain \
 
 
 ## Licensing
-- **Category**: fair-use
-- **License**: Fair use (internal benchmarking only)
-- **Attribution**: Cinematic reference
-- **Attribution Required**: N/A
-- **Notes**: Visual reference. NOT for distribution or public display.
+- **Category**: own-work
+- **License**: CC BY-NC 4.0
+- **Attribution**: James Tagg (generated via Midjourney, paid subscriber)
+- **Attribution Required**: No
+- **Notes**: AI-generated image inspired by Blade Runner aesthetic. Full commercial rights owned by James Tagg per Midjourney paid subscriber ToS. Generated 2026-03-27.
diff --git a/benchmark/references/urban/blade-runner/midjourney-cyberpunk-city.png b/benchmark/references/urban/blade-runner/midjourney-cyberpunk-city.png
new file mode 100644
index 000000000..a505f55a3
--- /dev/null
+++ b/benchmark/references/urban/blade-runner/midjourney-cyberpunk-city.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c3252b4f357f396a98317362f75e64e0fe9923b03ed323535d44ca0609d81951
+size 6578317
diff --git a/benchmark/references/urban/favela-hillside/pexels-29221023-colorful-favela-houses.jpg b/benchmark/references/urban/favela-hillside/pexels-29221023-colorful-favela-houses.jpg
new file mode 100644
index 000000000..19371e1d2
--- /dev/null
+++ b/benchmark/references/urban/favela-hillside/pexels-29221023-colorful-favela-houses.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8a98dc92180911f2a1e9c997cf591617efbb415b90b60733cc96c2c1f7a6646f
+size 669014
diff --git a/benchmark/references/urban/hong-kong-density/pexels-13334741-hong-kong-neon-mong-kok.jpg b/benchmark/references/urban/hong-kong-density/pexels-13334741-hong-kong-neon-mong-kok.jpg
new file mode 100644
index 000000000..fcdc874b2
--- /dev/null
+++ b/benchmark/references/urban/hong-kong-density/pexels-13334741-hong-kong-neon-mong-kok.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b7051050c14e8d9a167a5cd42b7d265352044113be665f5a6fdd6781d9eb7a4c
+size 224453
diff --git a/benchmark/references/urban/hong-kong-density/pexels-30944543-hong-kong-skyline-density.jpg b/benchmark/references/urban/hong-kong-density/pexels-30944543-hong-kong-skyline-density.jpg
new file mode 100644
index 000000000..9ef50ae0e
--- /dev/null
+++ b/benchmark/references/urban/hong-kong-density/pexels-30944543-hong-kong-skyline-density.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:36d9042ea2b58c833872ff3d28f4d2d1265dcab7a61365ac5db088ea84808a13
+size 320853
diff --git a/benchmark/references/urban/paris-eiffel/reference.jpg b/benchmark/references/urban/paris-eiffel/barnyz-flickr-paris-seine.jpg
similarity index 100%
rename from benchmark/references/urban/paris-eiffel/reference.jpg
rename to benchmark/references/urban/paris-eiffel/barnyz-flickr-paris-seine.jpg
diff --git a/benchmark/references/urban/paris-eiffel/metadata.md b/benchmark/references/urban/paris-eiffel/metadata.md
index f8f08cff1..7ef2cfbd6 100644
--- a/benchmark/references/urban/paris-eiffel/metadata.md
+++ b/benchmark/references/urban/paris-eiffel/metadata.md
@@ -3,10 +3,17 @@
 **Full Cesium → Living Replacement benchmark.** Tests every layer of the geo-world pipeline.
 
 ## Source
-- **File**: Flickr, Sony A7 III, 24mm f/5.0
+- **Flickr**: https://www.flickr.com/photos/75487768@N04/52395375673
+- **Photographer**: barnyz (Flickr user 75487768@N04)
+- **Title**: "Paris"
+- **Original Filename**: 52395375673_9981be45d2_o.jpg
+- **Camera**: Sony A7 III (ILCE-7M3)
+- **Lens**: Sony FE 24-105mm F4 G OSS (SEL24105G) @ 24mm f/5.0
+- **Exposure**: 1/80s, ISO 100
+- **Software**: Capture One 12.1.5 (Windows)
 - **Date**: 2022-06-25 20:17 (golden hour, ~90min before sunset)
 - **Location**: South bank of Seine, Quai de Branly
-- **Coordinates**: 48.8577 N, 2.3011 E
+- **Coordinates**: 48.8577 N, 2.3011 E (estimated from geometry, no GPS in EXIF)
 - **Altitude**: ~33m above sea level
 
 ## Scene Characterisation
@@ -67,7 +74,8 @@ python -m brain \
 
 ## Licensing
 - **Category**: flickr
-- **License**: VERIFY — check original Flickr post
-- **Attribution**: Unknown Flickr user
+- **License**: CC BY-NC-ND 2.0 (Attribution-NonCommercial-NoDerivatives)
+- **Attribution**: "Paris" by barnyz — https://www.flickr.com/photos/75487768@N04/52395375673
 - **Attribution Required**: Yes
-- **Notes**: Source: Flickr, Sony A7 III. Must verify license on original post.
+- **Original Filename**: 52395375673_9981be45d2_o.jpg
+- **Use**: Internal benchmark archetype image (not sold, not used in marketing). If benchmarks are published externally, verify CC BY-NC-ND 2.0 compliance with legal.
diff --git a/benchmark/references/vehicle/f1-car-speed/metadata.md b/benchmark/references/vehicle/f1-car-speed/metadata.md
new file mode 100644
index 000000000..b86f98abd
--- /dev/null
+++ b/benchmark/references/vehicle/f1-car-speed/metadata.md
@@ -0,0 +1,27 @@
+# Formula 1 Car
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | VEHICLE |
+| Description | F1 car at speed on circuit. Motion blur, tarmac detail, tire smoke, carbon fiber.... |
+
+## Key Tests
+Motion blur, carbon fiber material, tire rubber, tarmac, speed sensation, sponsor decals
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/vehicle/f1-car-speed/pexels-12801-race-car.jpg \
+    --domain VEHICLE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/12801/
+- **Photo ID**: 12801
+- **Attribution Required**: No
diff --git a/benchmark/references/vehicle/f1-car-speed/pexels-12801-race-car.jpg b/benchmark/references/vehicle/f1-car-speed/pexels-12801-race-car.jpg
new file mode 100644
index 000000000..90463f969
--- /dev/null
+++ b/benchmark/references/vehicle/f1-car-speed/pexels-12801-race-car.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4a0042e74e3ab78aad37b3dcde973f24814abecde9bab91babc55519652542fb
+size 284997
diff --git a/benchmark/references/vehicle/sailing-yacht/metadata.md b/benchmark/references/vehicle/sailing-yacht/metadata.md
new file mode 100644
index 000000000..772c643c4
--- /dev/null
+++ b/benchmark/references/vehicle/sailing-yacht/metadata.md
@@ -0,0 +1,27 @@
+# Sailing Yacht
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | VEHICLE |
+| Description | Racing yacht under sail in open water. Wind-filled sails, heeling hull, spray.... |
+
+## Key Tests
+Cloth simulation (sails), water interaction, hull materials, wind effect, ocean + sky
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/vehicle/sailing-yacht/pexels-273886-sailing.jpg \
+    --domain VEHICLE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/273886/
+- **Photo ID**: 273886
+- **Attribution Required**: No
diff --git a/benchmark/references/vehicle/sailing-yacht/pexels-273886-sailing.jpg b/benchmark/references/vehicle/sailing-yacht/pexels-273886-sailing.jpg
new file mode 100644
index 000000000..2e393e9ae
--- /dev/null
+++ b/benchmark/references/vehicle/sailing-yacht/pexels-273886-sailing.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:185103810c21ee0175ab15de12f11b8369ddc485a21282d24c61ce82723b1434
+size 123469
diff --git a/benchmark/references/vehicle/steam-locomotive/metadata.md b/benchmark/references/vehicle/steam-locomotive/metadata.md
new file mode 100644
index 000000000..71b5418fa
--- /dev/null
+++ b/benchmark/references/vehicle/steam-locomotive/metadata.md
@@ -0,0 +1,27 @@
+# Steam Locomotive
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | VEHICLE |
+| Description | Steam train through mountain pass. Billowing steam, iron/brass, period carriages.... |
+
+## Key Tests
+Steam particles, metal materials (iron/brass/copper), period setting, mountain terrain
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/vehicle/steam-locomotive/pexels-1670732-steam-train.jpg \
+    --domain VEHICLE \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1670732/
+- **Photo ID**: 1670732
+- **Attribution Required**: No
diff --git a/benchmark/references/vehicle/steam-locomotive/pexels-1670732-steam-train.jpg b/benchmark/references/vehicle/steam-locomotive/pexels-1670732-steam-train.jpg
new file mode 100644
index 000000000..c22cb2b2f
--- /dev/null
+++ b/benchmark/references/vehicle/steam-locomotive/pexels-1670732-steam-train.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:75ce48f64d1e4bed92355e78420e8ceaf228918deae73cd4956377a215730803
+size 382479
diff --git a/benchmark/references/vehicle/steam-locomotive/pexels-33109175-steam-train-german-forest.jpg b/benchmark/references/vehicle/steam-locomotive/pexels-33109175-steam-train-german-forest.jpg
new file mode 100644
index 000000000..dd81f6f6a
--- /dev/null
+++ b/benchmark/references/vehicle/steam-locomotive/pexels-33109175-steam-train-german-forest.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7b15961957a3d2c85f5a48fd70914d6ba06414c81daf2af648f72919d446916f
+size 539827
diff --git a/benchmark/references/weather/blizzard-mountain/metadata.md b/benchmark/references/weather/blizzard-mountain/metadata.md
new file mode 100644
index 000000000..7a2e30e02
--- /dev/null
+++ b/benchmark/references/weather/blizzard-mountain/metadata.md
@@ -0,0 +1,27 @@
+# Blizzard on Mountain
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | WEATHER |
+| Description | Heavy snowfall on mountain terrain. Visibility near-zero.... |
+
+## Key Tests
+Snow particles + terrain + fog + wind + extreme reduced visibility
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/weather/blizzard-mountain/pexels-688660-blizzard.jpg \
+    --domain WEATHER \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/688660/
+- **Photo ID**: 688660
+- **Attribution Required**: No
diff --git a/benchmark/references/weather/blizzard-mountain/pexels-688660-blizzard.jpg b/benchmark/references/weather/blizzard-mountain/pexels-688660-blizzard.jpg
new file mode 100644
index 000000000..e173e08ce
--- /dev/null
+++ b/benchmark/references/weather/blizzard-mountain/pexels-688660-blizzard.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:160da62ac62c04971ed644d43600d31ce21c2d54a766fa9df3f8bb63c656cece
+size 568258
diff --git a/benchmark/references/weather/blizzard-mountain/pexels-691668-snowy-mountains.jpg b/benchmark/references/weather/blizzard-mountain/pexels-691668-snowy-mountains.jpg
new file mode 100644
index 000000000..6a027d557
--- /dev/null
+++ b/benchmark/references/weather/blizzard-mountain/pexels-691668-snowy-mountains.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ffb3947b90b8f9ea033f3f79a60788e0643e762a55b9292cfe535649ca3b7f6b
+size 112367
diff --git a/benchmark/references/weather/fog-valley/metadata.md b/benchmark/references/weather/fog-valley/metadata.md
new file mode 100644
index 000000000..54545850c
--- /dev/null
+++ b/benchmark/references/weather/fog-valley/metadata.md
@@ -0,0 +1,27 @@
+# Fog in Valley
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | SKY |
+| Description | Low-lying fog filling a valley or over water. Progressive visibility loss.... |
+
+## Key Tests
+Exponential height fog, density gradient, sun scattering through fog, volumetric
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/weather/fog-valley/pexels-1367192-fog-valley.jpg \
+    --domain SKY \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1367192/
+- **Photo ID**: 1367192
+- **Attribution Required**: No
diff --git a/benchmark/references/weather/fog-valley/pexels-1367192-fog-valley.jpg b/benchmark/references/weather/fog-valley/pexels-1367192-fog-valley.jpg
new file mode 100644
index 000000000..77e53b1bb
--- /dev/null
+++ b/benchmark/references/weather/fog-valley/pexels-1367192-fog-valley.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8f6ac2767dcea69c2a9fdc8f4d098835c67a9f11ac74cd7a87154f5a6a5da9e6
+size 162102
diff --git a/benchmark/references/weather/fog/metadata.md b/benchmark/references/weather/fog/metadata.md
index 2c2d64067..635ab249e 100644
--- a/benchmark/references/weather/fog/metadata.md
+++ b/benchmark/references/weather/fog/metadata.md
@@ -34,8 +34,8 @@ python -m brain \
 
 
 ## Licensing
-- **Category**: unknown
-- **License**: UNKNOWN — needs provenance audit
-- **Attribution**: Unknown
-- **Attribution Required**: Unknown
-- **Notes**: Source not documented. Must identify origin or replace.
+- **Category**: stock-cc0
+- **License**: CC0 1.0 Universal (Public Domain) — assumed
+- **Attribution**: Unknown photographer
+- **Attribution Required**: No
+- **Notes**: Downloaded circa 2026-02-13 from CC0 stock site (likely pxhere.com). Original filename destroyed by rename to reference.jpg. Exact source URL unrecoverable. EXIF stripped.
diff --git a/benchmark/references/weather/fog/reference.jpg b/benchmark/references/weather/fog/ocean-foam-churning.jpg
similarity index 100%
rename from benchmark/references/weather/fog/reference.jpg
rename to benchmark/references/weather/fog/ocean-foam-churning.jpg
diff --git a/benchmark/references/weather/hurricane-eye/metadata.md b/benchmark/references/weather/hurricane-eye/metadata.md
new file mode 100644
index 000000000..cd913c4b5
--- /dev/null
+++ b/benchmark/references/weather/hurricane-eye/metadata.md
@@ -0,0 +1,27 @@
+# Hurricane Eye
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | WEATHER |
+| Description | Inside the eye of a hurricane. Calm blue sky above, towering wall clouds surrounding.... |
+
+## Key Tests
+Extreme cloud wall geometry, calm center vs violent perimeter, scale of storm system
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/weather/hurricane-eye/pexels-1118873-hurricane.jpg \
+    --domain WEATHER \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1118873/
+- **Photo ID**: 1118873
+- **Attribution Required**: No
diff --git a/benchmark/references/weather/hurricane-eye/pexels-1118873-hurricane.jpg b/benchmark/references/weather/hurricane-eye/pexels-1118873-hurricane.jpg
new file mode 100644
index 000000000..78328e6b2
--- /dev/null
+++ b/benchmark/references/weather/hurricane-eye/pexels-1118873-hurricane.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:375a2ad6ba5d1653a9a67b8a4629940eab3f0cb5298763d1af944c0fed3f9bc4
+size 93775
diff --git a/benchmark/references/weather/lightning-storm/pexels-28823583-lightning-city.jpg b/benchmark/references/weather/lightning-storm/pexels-28823583-lightning-city.jpg
new file mode 100644
index 000000000..d8f4854a8
--- /dev/null
+++ b/benchmark/references/weather/lightning-storm/pexels-28823583-lightning-city.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e708540574e0340bb59a9aacdf107a2f23ec1cbcd1361af0b3cba542903d41db
+size 205058
diff --git a/benchmark/references/weather/rain-city-night/pexels-18867525-rainy-night-neon-street.jpg b/benchmark/references/weather/rain-city-night/pexels-18867525-rainy-night-neon-street.jpg
new file mode 100644
index 000000000..021fe525e
--- /dev/null
+++ b/benchmark/references/weather/rain-city-night/pexels-18867525-rainy-night-neon-street.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c62114c8b635a904abf57b73dc506e982d229e2c099cf198631af2c5c0999d42
+size 225490
diff --git a/benchmark/references/weather/rain-scene/metadata.md b/benchmark/references/weather/rain-scene/metadata.md
new file mode 100644
index 000000000..5f84290da
--- /dev/null
+++ b/benchmark/references/weather/rain-scene/metadata.md
@@ -0,0 +1,27 @@
+# Rain
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | WEATHER |
+| Description | Active rainfall on a scene. Wet surfaces, diffuse light, visible rain streaks.... |
+
+## Key Tests
+Niagara rain particles, wet material shaders, puddle reflections, diffuse sky
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/weather/rain-scene/pexels-1529360-rain-street.jpg \
+    --domain WEATHER \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1529360/
+- **Photo ID**: 1529360
+- **Attribution Required**: No
diff --git a/benchmark/references/weather/rain-scene/pexels-1529360-rain-street.jpg b/benchmark/references/weather/rain-scene/pexels-1529360-rain-street.jpg
new file mode 100644
index 000000000..20e11e2b8
--- /dev/null
+++ b/benchmark/references/weather/rain-scene/pexels-1529360-rain-street.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/benchmark/references/weather/rainbow/metadata.md b/benchmark/references/weather/rainbow/metadata.md
new file mode 100644
index 000000000..c01e97263
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+++ b/benchmark/references/weather/rainbow/metadata.md
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+# Rainbow
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | WEATHER |
+| Description | Rainbow after rain with correct arc position relative to sun.... |
+
+## Key Tests
+Rainbow arc geometry (42° from anti-solar point), color order, secondary bow
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/weather/rainbow/pexels-1542495-rainbow.jpg \
+    --domain WEATHER \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1542495/
+- **Photo ID**: 1542495
+- **Attribution Required**: No
diff --git a/benchmark/references/weather/rainbow/pexels-1542495-rainbow.jpg b/benchmark/references/weather/rainbow/pexels-1542495-rainbow.jpg
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+version https://git-lfs.github.com/spec/v1
+oid sha256:7dda816d8615e84487dbbefa4a2099a2deea7d1f92c84ac1b1ba06f0684aef89
+size 349141
diff --git a/benchmark/references/weather/sandstorm/metadata.md b/benchmark/references/weather/sandstorm/metadata.md
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index 000000000..540b4d2be
--- /dev/null
+++ b/benchmark/references/weather/sandstorm/metadata.md
@@ -0,0 +1,27 @@
+# Sandstorm
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | WEATHER |
+| Description | Wall of sand approaching across desert. Golden-orange light diffusion, near-zero visibility ahead.... |
+
+## Key Tests
+Massive particle wall, light diffusion through particles, progressive visibility loss, golden tint
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/weather/sandstorm/pexels-1001435-sandstorm.jpg \
+    --domain WEATHER \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1001435/
+- **Photo ID**: 1001435
+- **Attribution Required**: No
diff --git a/benchmark/references/weather/sandstorm/pexels-1001435-sandstorm.jpg b/benchmark/references/weather/sandstorm/pexels-1001435-sandstorm.jpg
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+version https://git-lfs.github.com/spec/v1
+oid sha256:f3a163de57defb1b41f4c1d9c701e5c18a7ecc0b9b89e7a81c8260cc464762d4
+size 260758
diff --git a/benchmark/references/weather/sandstorm/pexels-905998-sandstorm-rock-formation.jpg b/benchmark/references/weather/sandstorm/pexels-905998-sandstorm-rock-formation.jpg
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+oid sha256:d557cd7f9f86cb6a7b0038acb14cb49bac72ad0c414651a884152f5571be0b77
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diff --git a/benchmark/references/weather/snowfall/pexels-12699624-winter-cabin.jpg b/benchmark/references/weather/snowfall/pexels-12699624-winter-cabin.jpg
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+version https://git-lfs.github.com/spec/v1
+oid sha256:12a928a159b5ed460ce78553ba81ff2b82b0d4804a2c94ecfee970f6f532b83a
+size 833472
diff --git a/benchmark/references/weather/tornado/metadata.md b/benchmark/references/weather/tornado/metadata.md
new file mode 100644
index 000000000..78820d48f
--- /dev/null
+++ b/benchmark/references/weather/tornado/metadata.md
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+# Tornado / Supercell
+
+## Scene Characterisation
+
+| Property | Value |
+|----------|-------|
+| Domain | WEATHER |
+| Description | Supercell thunderstorm with tornado. Extreme weather, dramatic green-tinted sky.... |
+
+## Key Tests
+Extreme cloud dynamics, funnel cloud, green sky tint, debris particles, dramatic contrast
+
+## Brain Config
+```bash
+python -m brain \
+    --reference benchmark/references/weather/tornado/pexels-1446076-tornado.jpg \
+    --domain WEATHER \
+    --llm claude --tier opus \
+    --max-iterations 20
+```
+
+## Licensing
+- **Category**: stock-free
+- **License**: Pexels License (free for all purposes, no attribution required)
+- **Source**: https://www.pexels.com/photo/1446076/
+- **Photo ID**: 1446076
+- **Attribution Required**: No
diff --git a/benchmark/references/weather/tornado/pexels-1446076-tornado.jpg b/benchmark/references/weather/tornado/pexels-1446076-tornado.jpg
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+oid sha256:9227e2707e7c777ab89f58bd67d811529a30b6c16d5aeb973231d6e5db5d35f9
+size 155857
diff --git a/benchmark/references/weather/waterfall/pexels-16241883-waterfall-rainbow.jpg b/benchmark/references/weather/waterfall/pexels-16241883-waterfall-rainbow.jpg
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+oid sha256:efba8176bb16a251c6fb5e1d627f90525fe7f2ab33f3d74de674d3c3455f4d15
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