- avatar.tsx: consolidate to single isEmojiShape boolean, fix AvatarFallback using same logic as Avatar
- avatarShape.ts: accept NostrMetadata directly in getAvatarShape (no cast needed)
- Remove 'as Record<string, unknown>' casts from all ~50 call sites
- Replace 'circle' magic string with empty string in form defaults and parseShape
- Use isValidAvatarShape instead of string comparison in save logic
- ProfileCard: extract IIFE overlay style into useMemo, use isEmojiShape throughout
Alex Gleason
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