Bump versjon til v1.11.0 (versionCode 18)

Ny funksjon (åpne i kartapp) pluss fire feilrettinger siden v1.10.2:
- Android: kartapp-knapp med geo:-intent (#2), desimalkomma i
  delingstekst (#20), hybrid dyplenke-liste med badge (#13/#18),
  synlig posisjonspil (#16)
- PWA: hybrid dyplenke-liste med badge (#17), dyplenker ved kald
  førstelast (#19)

- versionCode 17 → 18, versionName 1.10.2 → 1.11.0
- User-Agent Tilfluktsrom/1.11.0
- fastlane changelogs/18.txt (en/nb/nn, ≤500 tegn)
- README + full_description: «Åpne i kartapp» i funksjonslista

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FrDGDmN2WAXvNPS85rWJGK

fastlane/metadata/android/en-US/full_description.txt

@@ -6,6 +6,7 @@ Features:
 • Offline map — map tiles are cached automatically for use without internet
 • Select any shelter — tap any marker on the map to navigate there
 • Share shelters — send shelter location to others via any app
+• Open in map app — walking directions to the selected shelter in any installed map app, including offline ones
 • Civil defense info — what to do if the alarm sounds
 • Multilingual — English, Bokmål, and Nynorsk