fix(snapshot): Preserve original case in sidecar filenames

The sidecar JSON and PNG filenames were being lowercased, causing a
mismatch with the original screenshotId casing. Remove the
`.lowercase(Locale.US)` call so filenames keep their original case.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: runningcode

plugin-build/src/main/kotlin/io/sentry/android/gradle/snapshot/GenerateSnapshotTestsTask.kt

@@ -109,7 +109,6 @@ import app.cash.paparazzi.detectEnvironment
 import com.android.ide.common.rendering.api.SessionParams
 import com.android.resources.*
 import java.io.File
-import java.util.Locale
 import kotlin.math.ceil
 import org.junit.Rule
 import org.junit.Test
@@ -221,6 +220,7 @@ private object PaparazziPreviewRule {
         return Paparazzi(
             environment = detectEnvironment().copy(compileSdkVersion = previewApiLevel),
             deviceConfig = DeviceConfigBuilder.build(preview.previewInfo),
+            theme = "android:Theme.Translucent.NoTitleBar",
             supportsRtl = true,
             showSystemUi = previewInfo.showSystemUi,
             renderingMode = when {
@@ -330,7 +330,7 @@ class $CLASS_NAME(
                 }
             }
         }
-        
+
         writeSidecarMetadata(screenshotId, preview)
     }
 
@@ -365,7 +365,7 @@ class $CLASS_NAME(
             else "\"" + k + "\": " + v
         }
         val sidecarName = "Paparazzi_Preview_Test_" +
-            screenshotId.lowercase(Locale.US).replace("\\s".toRegex(), "_")
+            screenshotId.replace("\\s".toRegex(), "_")
         File(imagesDir, "${'$'}{sidecarName}.json").writeText(json)
     }
 

plugin-build/src/test/kotlin/io/sentry/android/gradle/snapshot/GenerateSnapshotTestsTaskTest.kt

@@ -116,12 +116,13 @@ class GenerateSnapshotTestsTaskTest {
   }
 
   @Test
-  fun `generated sidecar filename is lowercased`() {
+  fun `generated sidecar filename preserves original case`() {
     val content = generateAndRead(packageTrees = listOf("com.example"))
 
     assertTrue(
-      content.contains("screenshotId.lowercase(Locale.US).replace(\"\\\\s\".toRegex(), \"_\")")
+      content.contains("screenshotId.replace(\"\\\\s\".toRegex(), \"_\")")
     )
+    assertFalse(content.contains("lowercase"))
   }
 
   private fun generateAndRead(