REDI-101: replace em/en dashes with hyphens in prose & comments

Em dashes are a common AI-writing tell; swap them (and en dashes) for plain
hyphens across the README and all KDoc/comment prose so the repo reads as
hand-authored. Byte-level replace of U+2014/U+2013 -> '-'; arrows and the
ellipsis are left untouched.

The two functional em dashes are intentionally kept: the `DASH = "—"`
blank-field UI placeholder in CharacterDetailUi and the preview sample that
mirrors it -- those are deliberate UX, not prose.

core/data/src/main/kotlin/com/example/architecture/core/data/di/CoreDataModule.kt

@@ -6,7 +6,7 @@ import io.ktor.client.engine.okhttp.OkHttp
 import org.koin.dsl.module
 
 /**
- * Core data DI: the single shared [HttpClient]. This is the one sanctioned lambda-DSL binding —
+ * Core data DI: the single shared [HttpClient]. This is the one sanctioned lambda-DSL binding -
  * HttpClient is assembled by a factory plus the OkHttp engine (not a plain constructor), so the
  * constructor DSL (`singleOf`) cannot express it. Feature data modules append their own bindings.
  */

core/design-system/src/main/kotlin/com/example/architecture/core/design/system/theme/Color.kt

@@ -4,7 +4,7 @@ import androidx.compose.material3.darkColorScheme
 import androidx.compose.material3.lightColorScheme
 import androidx.compose.ui.graphics.Color
 
-// Brand palette — seeded from the Android green used by the project.
+// Brand palette - seeded from the Android green used by the project.
 private val Green10 = Color(0xFF00210B)
 private val Green20 = Color(0xFF003918)
 private val Green40 = Color(0xFF1E6C36)

core/domain/src/main/kotlin/com/example/architecture/core/domain/Result.kt

@@ -13,7 +13,7 @@ sealed interface Result<out D, out E : Error> {
     ) : Result<Nothing, E>
 }
 
-/** A [Result] that carries no success payload — for operations that either succeed or fail. */
+/** A [Result] that carries no success payload - for operations that either succeed or fail. */
 typealias EmptyResult<E> = Result<Unit, E>
 
 inline fun <T, E : Error, R> Result<T, E>.map(map: (T) -> R): Result<R, E> {