Fix i18n-iso-countries import for Vite bundling

Import from 'i18n-iso-countries/index' instead of 'i18n-iso-countries'
to avoid entry-node.js which has dynamic requires for all language
files that break Vite's bundler.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: ndbroadbent

src/export/filter.ts

@@ -5,7 +5,8 @@
  * Provides a single code path for filtering, sorting, and limiting activities.
  */
 
-import countries from 'i18n-iso-countries'
+// Use /index to avoid entry-node.js which has dynamic requires for all language files
+import countries from 'i18n-iso-countries/index'
 import en from 'i18n-iso-countries/langs/en.json'
 import type { GeocodedActivity, SortOrder } from '../types'
 import { isMappable } from '../types'

src/geocoder/index.ts

@@ -4,7 +4,8 @@
  * Convert location text to coordinates using Google Maps APIs.
  */
 
-import countries from 'i18n-iso-countries'
+// Use /index to avoid entry-node.js which has dynamic requires for all language files
+import countries from 'i18n-iso-countries/index'
 import { generateGeocodeCacheKey } from '../cache/key'
 import type { ResponseCache } from '../cache/types'
 import { extractGoogleMapsCoords } from '../extraction/heuristics/url-classifier'