Brainwave (trivia) art assets: "Chalk & Cork Pop Quiz" theme
All files below are CC0 1.0 (public domain dedication). Licenses re-verified on the source pages on 2026-10-14.
Downloaded into a scratch folder, extracted there, and only these image/font files were copied (resized/re-encoded where noted).

chalkboard.jpg
  Pack/title: Chalkboard Texture
  Author:     MonoTone
  Source:     https://opengameart.org/content/chalkboard-texture  (file chalkboardtex.png)
  License:    CC0 (OpenGameArt license field: CC0)
  Changes:    resized 1920x1080 -> 1280x720, brightened and tinted to slate green, saved as JPEG q72.
              A 600px copy is embedded (base64) in /assets/covers/trivia.svg and trivia-banner.svg.

cork.jpg
  Pack/title: Cork 003 (Cork003_1K-JPG, Color map)
  Author:     ambientCG (Lennart Demes)
  Source:     https://ambientcg.com/view?id=Cork003  (license: https://ambientcg.com/license)
  License:    CC0 1.0
  Changes:    resized 1024 -> 256px tile, JPEG q70. A 160px copy is embedded in trivia-banner.svg.

Drybrush.ttf
  Pack/title: Drybrush Font (Drybrush_Font_1_00.zip)
  Author:     GGBotNet
  Source:     https://ggbot.itch.io/drybrush-font
  License:    CC0 1.0 ("licensed under the Creative Commons Zero v1.0 Universal")
  Changes:    none. Title lettering in the cover/banner SVGs is converted from this font to paths.

Scabber.woff2, Scabber.ttf
  Pack/title: Scabber Font (Scabber_Font_1_05.zip)
  Author:     GGBotNet
  Source:     https://ggbot.itch.io/scabber-font
  License:    CC0 1.0
  Changes:    none. "Q8" on the cover sticker is converted from this font to paths.

star.png, check.png, cross.png, trophy.png
  Pack/title: Game Icons (PNG/White/2x: star, checkmark, cross, trophy)
  Author:     Kenney (kenney.nl)
  Source:     https://kenney.nl/assets/game-icons
  License:    CC0 1.0
  Changes:    resized 100 -> 96px. Used as CSS masks (tinted gold for star stickers).

chalkdust.png
  Pack/title: Particle Pack (PNG (Transparent)/smoke_04.png)
  Author:     Kenney (kenney.nl)
  Source:     https://kenney.nl/assets/particle-pack
  License:    CC0 1.0
  Changes:    resized 512 -> 128px.

idea.png, question.png
  Pack/title: Emotes Pack (PNG/Vector/Style 1: emote_idea.png, emote_question.png)
  Author:     Kenney (kenney.nl)
  Source:     https://kenney.nl/assets/emotes-pack
  License:    CC0 1.0
  Changes:    none.

Hand-made (no third-party asset): oak frame, chalk tray, chalk sticks, eraser, magnets, push-pins, sticky notes,
index cards, tape, pencil timer, textbook podium, chalk circle/strike effects (CSS), and the cover/banner
illustration (SVG).

--- Round 2 additions (downloaded 2026-10-14; ambientCG license page https://docs.ambientcg.com/license/ :
    "All ambientCG assets are provided under the Creative Commons CC0 1.0 Universal License.") ---

wall.jpg
  Pack/title: Painted Bricks 003 (PaintedBricks003_1K-JPG: _AmbientOcclusion.jpg and _Color.jpg maps)
  Author:     ambientCG (Lennart Demes)
  Source:     https://ambientcg.com/view?id=PaintedBricks003
  License:    CC0 1.0
  Changes:    resized 1024 -> 512px, luminance of the AO (80%) and colour (20%) maps reduced in contrast and
              multiplied onto sage #8fa792, light 3x3 blur, JPEG q70. A 200px copy is embedded in the cover/banner.

oak.jpg
  Pack/title: Wood 049 (Wood049_1K-JPG_Color.jpg)
  Author:     ambientCG (Lennart Demes)
  Source:     https://ambientcg.com/view?id=Wood049
  License:    CC0 1.0
  Changes:    cropped a 1024x256 horizontal band, resized to 512x128, warmed toward #b98450 and brightened, JPEG q70.
              A 256px copy is embedded in the cover/banner.

paper.jpg
  Pack/title: Paper 001 (Paper001_1K-JPG_Color.jpg)
  Author:     ambientCG (Lennart Demes)
  Source:     https://ambientcg.com/view?id=Paper001
  License:    CC0 1.0
  Changes:    resized to 256px, greyscale, levels lifted to a near-white mean (#f2f2f2), JPEG q70. Multiplied over
              paper pieces in CSS as "paper tooth". A 128px copy is embedded in the cover/banner.

Hand-made in round 2 (no third-party asset): wall clock, chair rail, brass screws, capsule chalk sticks, felt eraser,
textbook piles, apple, ghost chalk doodles (inline SVG), "HELLO my name is" tag, "POP QUIZ!" caption.

Approved direction D update, October 18 2026:
classroom-board-v2.png: AI-generated with OpenAI imagegen for this project. Painted empty chalkboard and oak frame with chalk doodles. Generated as a background layer; questions, answers, timers, player cards and results remain live production UI. Original CC0 texture/font/icon credits above remain applicable. No reference concept is shipped as gameplay.