Phase 3: Rewrite admin/themes.css as a bridge mapping DaisyUI --color-*
variables to --t-* theme tokens. Admin components still reference
--color-base-100, --color-primary etc but these now resolve through the
bridge to the merchant's theme colours. Status colours (error, success,
warning, info) stay hardcoded.
Add .themed wrapper with data-mood to admin_root.html.heex. Remove the
old data-theme JS toggle script — dark mode now comes from the theme
system mood setting. Admin inherits theme colours, typography, and shape
from the merchant's chosen theme.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>