The API now returns definition icons as lucide:<name>, but the admin
looked up and compared bare names only, so every icon rendered as the
generic fallback and nothing was selected in the edit picker (NQ-241-1).
Add normalizeDefinitionIconName as the one rule for both surfaces:
lucide:<name> and a legacy bare <name> give <name>; fa:, emoji: and
unknown namespaces give null (the fallback tile). Tapping a Lucide
choice now stores the canonical lucide:<name>; No icon still clears.
Task 707994b7.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>