Nested Colored-Dot Symbol System: An Information-Theoretic and Semantic Alternative to QR Codes

Recursive 2D symbol system combining D-FUMT8 8-value logic + 24-bit RGB color on orthogonal axes. Lean 4 proves depth-3 100×100 exceeds QR v40 L capacity by 25×, depth-4 100³ by 2523×. TypeScript encoder/decoder with PNG lossless round-trip (36/36 pass). Positioned as complementary to QR, not a replacement. Builds on FIDT Layer B via injective embedding.