Improve a Google Stitch prompt with brand context

Google Stitch generates UI from natural language descriptions, but without explicit brand parameters it falls back to Material Design conventions or generic styles. The output is functional but visually disconnected from the actual product brand. Extract the brand's tokens with Dembrandt, then include specific values (primary color, font family, base type size, border radius) directly in the Stitch prompt. The generated UI now reflects the real brand identity rather than a plausible-looking but off-brand approximation.