Adds a fifth roadmap status, `planned`, for items that are committed and
scheduled but not yet started — sitting between `in_beta` and `exploring`
in the progression. Rendered with the design system's indigo pigment
(#5a6d83) on the route, carousel, legend, and admin pill.
Migration 0008 widens the status CHECK constraint via a table rebuild
(SQLite can't alter it in place), preserving rows and attributions.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Jonathan Hvid
59842432bd