23.Rebrand an existing application

When a brand changes its visual identity, every hardcoded color value, font reference, spacing constant, and border radius in the codebase needs to be updated. Extract the new brand's tokens using Dembrandt, then feed the extraction JSON alongside the existing codebase into Claude Code. The agent audits every hardcoded value, matches it against the new token set, and produces a complete rebrand, replacing wrong values with correct ones throughout the codebase. This replaces a week of manual find-and-replace with a single agent session.