feat(screenshots): Set up localized Play Store screenshot pipeline

- Add Compose screenshot test infrastructure (build config, screenshotTest source set)

- Add 7 localized screenshots covering all key app screens

- Device spec set to Pixel 8 (1080x2400, 428dpi); batch size 4 for 1080p memory budget

- Add screen title heading and fix appearance card header layout in WidgetConfigurationScreen

- Balance padding on requires-Pro notice in widget config bottom bar

app/src/main/java/eu/darken/capod/common/compose/preview/MockPodDataProvider.kt

@@ -18,10 +18,13 @@ import eu.darken.capod.profiles.core.AppleDeviceProfile
 import eu.darken.capod.profiles.core.DeviceProfile
 import java.time.Instant
 
+/** Fixed timestamp for deterministic preview/screenshot rendering. */
+val MOCK_NOW: Instant = Instant.parse("2025-06-15T10:30:00Z")
+
 object MockPodDataProvider {
 
     fun dummyScanResult(rssi: Int = -50): BleScanResult = BleScanResult(
-        receivedAt = Instant.now(),
+        receivedAt = MOCK_NOW,
         address = "AA:BB:CC:DD:EE:FF",
         rssi = rssi,
         generatedAtNanos = 0L,
@@ -177,8 +180,8 @@ private class MockDualPodDevice(
 ) : DualPodDevice, HasCase, HasChargeDetectionDual, HasEarDetectionDual, HasDualMicrophone {
     override val identifier: PodDevice.Id = PodDevice.Id()
     override val model: PodDevice.Model = _model
-    override val seenLastAt: Instant = Instant.now()
-    override val seenFirstAt: Instant = Instant.now()
+    override val seenLastAt: Instant = MOCK_NOW
+    override val seenFirstAt: Instant = MOCK_NOW
     override val seenCounter: Int = 5
     override val scanResult: BleScanResult = MockPodDataProvider.dummyScanResult(rssi)
     override val reliability: Float = 1.0f
@@ -219,8 +222,8 @@ private class MockDualPodDeviceNoCase(
 ) : DualPodDevice, HasChargeDetectionDual, HasEarDetectionDual {
     override val identifier: PodDevice.Id = PodDevice.Id()
     override val model: PodDevice.Model = _model
-    override val seenLastAt: Instant = Instant.now()
-    override val seenFirstAt: Instant = Instant.now()
+    override val seenLastAt: Instant = MOCK_NOW
+    override val seenFirstAt: Instant = MOCK_NOW
     override val seenCounter: Int = 5
     override val scanResult: BleScanResult = MockPodDataProvider.dummyScanResult(rssi)
     override val reliability: Float = 1.0f
@@ -251,8 +254,8 @@ private class MockSinglePodDevice(
 ) : SinglePodDevice, HasChargeDetection, HasEarDetection {
     override val identifier: PodDevice.Id = PodDevice.Id()
     override val model: PodDevice.Model = _model
-    override val seenLastAt: Instant = Instant.now()
-    override val seenFirstAt: Instant = Instant.now()
+    override val seenLastAt: Instant = MOCK_NOW
+    override val seenFirstAt: Instant = MOCK_NOW
     override val seenCounter: Int = 5
     override val scanResult: BleScanResult = MockPodDataProvider.dummyScanResult(rssi)
     override val reliability: Float = 1.0f

app/src/main/java/eu/darken/capod/main/ui/widget/WidgetConfigurationScreen.kt

@@ -121,6 +121,14 @@ fun WidgetConfigurationScreen(
                 .verticalScroll(rememberScrollState())
                 .padding(top = 24.dp, bottom = 16.dp),
         ) {
+            Text(
+                text = stringResource(R.string.widget_config_screen_title),
+                style = MaterialTheme.typography.headlineSmall,
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(start = screenHPad, end = screenHPad, bottom = 16.dp),
+            )
+
             // Card A — Select Device
             Card(
                 modifier = Modifier
@@ -170,16 +178,15 @@ fun WidgetConfigurationScreen(
             ) {
                 Column(modifier = Modifier.padding(cardPad)) {
                     // Appearance header + reset
-                    Row(
-                        modifier = Modifier.fillMaxWidth(),
-                        verticalAlignment = Alignment.CenterVertically,
-                    ) {
+                    Column(modifier = Modifier.fillMaxWidth()) {
                         Text(
                             text = stringResource(R.string.widget_config_appearance_label),
                             style = MaterialTheme.typography.titleLarge,
-                            modifier = Modifier.weight(1f),
                         )
-                        TextButton(onClick = onReset) {
+                        TextButton(
+                            onClick = onReset,
+                            modifier = Modifier.align(Alignment.End),
+                        ) {
                             Text(text = stringResource(R.string.widget_config_reset_label))
                         }
                     }
@@ -327,7 +334,7 @@ fun WidgetConfigurationScreen(
                         color = MaterialTheme.colorScheme.error,
                         modifier = Modifier
                             .fillMaxWidth()
-                            .padding(horizontal = 24.dp, vertical = 12.dp),
+                            .padding(start = 24.dp, end = 24.dp, top = 16.dp, bottom = 4.dp),
                     )
                 }
 
@@ -496,11 +503,13 @@ private fun WidgetPreview(
                 // Inner preview content
                 LayoutInflater.from(ctx).inflate(R.layout.widget_config_preview, clipWrapper, true)
 
-                container.addView(clipWrapper, android.widget.FrameLayout.LayoutParams(
-                    android.widget.FrameLayout.LayoutParams.WRAP_CONTENT,
-                    android.widget.FrameLayout.LayoutParams.WRAP_CONTENT,
-                    android.view.Gravity.CENTER,
-                ))
+                container.addView(
+                    clipWrapper, android.widget.FrameLayout.LayoutParams(
+                        android.widget.FrameLayout.LayoutParams.WRAP_CONTENT,
+                        android.widget.FrameLayout.LayoutParams.WRAP_CONTENT,
+                        android.view.Gravity.CENTER,
+                    )
+                )
 
                 container
             },
@@ -744,7 +753,14 @@ private fun HexColorInput(
 ) {
     val hexString = color?.let { String.format("%06X", 0xFFFFFF and it) } ?: ""
 
-    var textFieldValue by remember { mutableStateOf(TextFieldValue(text = hexString, selection = TextRange(hexString.length))) }
+    var textFieldValue by remember {
+        mutableStateOf(
+            TextFieldValue(
+                text = hexString,
+                selection = TextRange(hexString.length)
+            )
+        )
+    }
 
     // Sync from external color changes (e.g. swatch clicks) only when content genuinely differs
     LaunchedEffect(hexString) {

app/src/main/res/values/strings.xml

@@ -117,6 +117,7 @@
     <string name="translators_thanks_description">darken</string>
 
     <string name="widget_description">A widget showing the last known device status.</string>
+    <string name="widget_config_screen_title">Widget Configuration</string>
     <string name="widget_configuration_title">Select Device</string>
     <string name="widget_configuration_description">Choose which device profile this widget should display.</string>
     <string name="common_feature_requires_pro_msg">This feature requires CAPod Pro.</string>