fix(map): resolve initialization crashes and boundary rendering

Fixes three critical bugs:

1. CRASH: Guard addSource/addLayer calls with existence checks to
   prevent "Source already exists" errors in React strict mode
   double-mount scenarios

2. BOUNDARY: Wrap boundary update logic in a function and properly
   handle async style loading - check isStyleLoaded() and use
   map.once('load') as fallback

3. FONTS: Use 'Noto Sans Regular' for highlight layers instead of
   'Noto Sans Medium'/'Noto Sans Bold' which 404 on protomaps CDN

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Matt 2026-04-29 22:47:24 +00:00
commit 472ef4d0e8

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