Typography: Manrope headings, Inter body — plus norsk dag/dager pluralization

Manrope (variable wght, instanced at 600/700/800) for display/headline/
title roles; Inter static Regular/Medium/SemiBold for body/label. M3
baseline metrics retained — only family and weight change, so component
layouts and accessibility text scaling are untouched. Both fonts are
OFL (THIRD_PARTY_LICENSES.md added) with full æøå/µ coverage, verified
by emulator screenshot. ScheduleText.daysCount fixes 'lager for 1
dager' spotted in that screenshot.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/src/main/java/no/naiv/meddetsamme/domain/ScheduleText.kt

@@ -36,6 +36,9 @@ object ScheduleText {
         }
     }
 
+    /** "1 dag", "3 dager" — norsk flertall. */
+    fun daysCount(days: Int): String = if (days == 1) "1 dag" else "$days dager"
+
     /** "1 tablett", "2,5 ml" — norsk desimalkomma. */
     fun amountText(amount: Double, unit: String): String {
         val number = if (amount == amount.toLong().toDouble()) {