Counterweight Choir v0.4 realistic image contract

Authoritative realistic nine-weight gameplay master.

Match the previous Counterweight Choir generation: bright contemporary gallery, tall slender aluminum mobile, fine tension wires, real porcelain/stone/metal counterweights, hard architectural daylight, warm-white acrylic panels, graphite type, restrained cobalt actions. Standard gameplay contains seven to ten weights; FTUE may use five. Explain swap, exact settle, target pose, and future hook physically. No printed numeric mass labels, equations, torque, signed angles, degree ticks, M/H/L, resonance tokens, phrase rail, calibration diagnostics, candy colors, soft toy blobs, cartoon faces, owner UI, or currency.

Source refs: SCR-GAMEPLAY ST-PREVIEW-SAFE M-PICK M-DRAG M-PREVIEW M-SWAP M-SETTLE M-CHECK M-UNDO M-RETRY E-BEAM E-PIVOT E-HOOK E-WEIGHT-1 E-WEIGHT-2 E-WEIGHT-3 E-SHUTTER E-ONEWAY E-GLASS E-TARGET-ARC E-BELL E-TRAY ENV-SCULPTURE-GALLERY UI-TARGET-CARD UI-MOVE-COUNT UI-WEIGHT-TRAY UI-HOOK-BADGE UI-PRIMARY A-COLOR A-MOTION A-HAPTIC A-READER A-TAP V-GHOST V-HOOK-CHANGE V-BOUNCE V-TARGET-LOCK V-SETTLE V-SUCCESS