Use Case Abacus: Prompt Bead Ledger

Visible title: "Use Case Abacus: Prompt Bead Ledger". Make one freestanding oversized abacus in a quiet fictional design lab, 16:9. The whole picture is a bead-ledger instrument: warm wood frame, ceramic beads, glass counters, brass stops, tiny engraved tick marks, blank sample tags, and a wax seal cup. Seven rails are labeled Noun Row, Adjective Cap, Weight Bead, Letter Rail, Frame Gate, Echo Check, Seal Cup. Meaning: count the main object, cap excess descriptors, balance visual influence, count short label letters, choose square/tall/wide framing, check whether repeated variants still echo the same idea, then seal source and safety notes. Keep labels sparse. No people, no screens, no real marks. This is not a grid, map, route, chip, maze, stage, garden, kitchen, paper roll, tray, press, loom, weather device, pinball, kite setup, or card layout. All content is fictional and rights-safe; avoid unsafe, adult, graphic, political, branded, celebrity, or copyrighted material. No watermark or QR code.