Fix i18n-iso-countries locale and update CLAUDE.md

- Register English locale for i18n-iso-countries to fix countryToRegionCode
- Add explicit rule: never remove comments to reduce file length, refactor instead

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: ndbroadbent

CLAUDE.md

@@ -75,7 +75,7 @@ The Python prototype in `src/*.py` serves as the reference implementation:
 
 | Rule | Limit |
 |------|-------|
-| File length (code) | 500 lines max |
+| File length (code) | 500 lines max (NEVER remove comments to reduce - REFACTOR and SPLIT the file) |
 | File length (tests) | 1000 lines max |
 | Function length | 50 lines max |
 | Line length | 100 chars max |

src/place-lookup/index.ts

@@ -6,10 +6,13 @@
  */
 
 import countries from 'i18n-iso-countries'
+import en from 'i18n-iso-countries/langs/en.json'
 import { generatePlaceLookupCacheKey } from '../caching/key'
 import type { ResponseCache } from '../caching/types'
+
 import { extractGoogleMapsCoords } from '../extraction/heuristics/url-classifier'
 import { guardedFetch, type HttpResponse } from '../http'
+
 import {
   type ClassifiedActivity,
   formatLocation,
@@ -19,6 +22,9 @@ import {
   type Result
 } from '../types'
 
+// Register English locale for country name lookups
+countries.registerLocale(en)
+
 const PLACES_TEXT_SEARCH_API = 'https://maps.googleapis.com/maps/api/place/textsearch/json'
 const GEOCODING_API = 'https://maps.googleapis.com/maps/api/geocode/json'