feat(home): AI 캐릭터 섹션을 연결한다

SodaLive/Sources/I18n/I18n.swift

@@ -3090,7 +3090,58 @@ If you block this user, the following features will be restricted.
         }
 
         static var aiCharacterSectionTitle: String {
-            pick(ko: "AI 캐릭터", en: "AI characters", ja: "AIキャラクター")
+            pick(ko: "크리에이터와 이야기를 나눠요!", en: "AI characters", ja: "AIキャラクター")
+        }
+
+        static func compactChatCount(_ count: Int) -> String {
+            pick(
+                ko: compactEastAsianCount(count, tenMillionUnit: "억", tenThousandUnit: "만", thousandUnit: "천"),
+                en: compactEnglishCount(count),
+                ja: compactEastAsianCount(count, tenMillionUnit: "億", tenThousandUnit: "万", thousandUnit: "千")
+            )
+        }
+
+        private static func compactEastAsianCount(
+            _ count: Int,
+            tenMillionUnit: String,
+            tenThousandUnit: String,
+            thousandUnit: String
+        ) -> String {
+            if count >= 100_000_000 {
+                return compactCountValue(count, divisor: 100_000_000, unit: tenMillionUnit)
+            }
+
+            if count >= 10_000 {
+                return compactCountValue(count, divisor: 10_000, unit: tenThousandUnit)
+            }
+
+            if count >= 1_000 {
+                return compactCountValue(count, divisor: 1_000, unit: thousandUnit)
+            }
+
+            return count.comma()
+        }
+
+        private static func compactEnglishCount(_ count: Int) -> String {
+            if count >= 1_000_000_000 {
+                return compactCountValue(count, divisor: 1_000_000_000, unit: "B")
+            }
+
+            if count >= 1_000_000 {
+                return compactCountValue(count, divisor: 1_000_000, unit: "M")
+            }
+
+            if count >= 1_000 {
+                return compactCountValue(count, divisor: 1_000, unit: "K")
+            }
+
+            return count.comma()
+        }
+
+        private static func compactCountValue(_ count: Int, divisor: Int, unit: String) -> String {
+            let value = floor((Double(count) / Double(divisor)) * 10) / 10
+            let format = value.truncatingRemainder(dividingBy: 1) == 0 ? "%.0f" : "%.1f"
+            return String(format: format, locale: Locale(identifier: "en_US_POSIX"), value) + unit
         }
 
         static var genreCreatorSectionTitle: String {