diff --git a/app/src/androidTest/java/com/example/slowclock/ThemeAndAlarmAccessibilityTest.kt b/app/src/androidTest/java/com/example/slowclock/ThemeAndAlarmAccessibilityTest.kt
new file mode 100644
index 00000000..5668c15e
--- /dev/null
+++ b/app/src/androidTest/java/com/example/slowclock/ThemeAndAlarmAccessibilityTest.kt
@@ -0,0 +1,101 @@
+package com.example.slowclock
+
+import android.app.UiModeManager
+import android.content.Context
+import android.content.Intent
+import android.content.res.Configuration
+import android.graphics.Bitmap
+import android.widget.TextView
+import androidx.test.core.app.ActivityScenario
+import androidx.test.core.app.ApplicationProvider
+import androidx.test.espresso.Espresso.onView
+import androidx.test.espresso.action.ViewActions.scrollTo
+import androidx.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
+import androidx.test.espresso.matcher.ViewMatchers.withId
+import androidx.test.platform.app.InstrumentationRegistry
+import com.example.slowclock.data.model.ThemeMode
+import com.example.slowclock.data.remote.repository.SettingsRepository
+import com.example.slowclock.ui.alarm.AlarmFullScreenActivity
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import java.io.File
+import com.example.slowclock.core.alarm.R as AlarmR
+
+class ThemeAndAlarmAccessibilityTest {
+    @Test
+    fun applicationModeOverridesSystemAndCanReturnToSystem() {
+        val context = ApplicationProvider.getApplicationContext<Context>()
+        val settings = SettingsRepository(context)
+        val previous = settings.getThemeMode()
+        val systemNight = context.getSystemService(UiModeManager::class.java).nightMode
+        try {
+            settings.setThemeMode(ThemeMode.DARK)
+            awaitNightMode(context, Configuration.UI_MODE_NIGHT_YES)
+            assertEquals(0xFF14120F.toInt(), context.getColor(R.color.window_background))
+            settings.setThemeMode(ThemeMode.LIGHT)
+            awaitNightMode(context, Configuration.UI_MODE_NIGHT_NO)
+            assertEquals(0xFFFAF6F0.toInt(), context.getColor(R.color.window_background))
+            settings.setThemeMode(ThemeMode.SYSTEM)
+            if (systemNight == UiModeManager.MODE_NIGHT_YES || systemNight == UiModeManager.MODE_NIGHT_NO) {
+                awaitNightMode(
+                    context,
+                    if (systemNight == UiModeManager.MODE_NIGHT_YES) Configuration.UI_MODE_NIGHT_YES else Configuration.UI_MODE_NIGHT_NO,
+                )
+            }
+        } finally {
+            settings.setThemeMode(previous)
+        }
+    }
+
+    // 글자 배율은 기기 전역 설정이라 계측 테스트에서 바꾸지 않는다. 큰 글자에서의 알람 화면
+    // 확인은 실기기 몫으로 남긴다(#220). 여기서는 기본 배율의 표기와 도달 가능성만 본다.
+    @Test
+    fun alarmClockReadsTwelveHourTimeAndActionsStayReachable() {
+        val context = ApplicationProvider.getApplicationContext<Context>()
+        val intent =
+            Intent(context, AlarmFullScreenActivity::class.java)
+                .putExtra("title", "혈압약 먹기")
+                .putExtra("desc", "식사 후 물과 함께 복용해 주세요.")
+        ActivityScenario.launch<AlarmFullScreenActivity>(intent).use { scenario ->
+            onView(withId(AlarmR.id.currentTimeText)).check(matches(isDisplayed()))
+            scenario.onActivity { activity ->
+                val clock = activity.findViewById<TextView>(AlarmR.id.currentTimeText)
+                assertTrue(clock.text.toString().matches(Regex("(오전|오후) [0-9]{1,2}:[0-9]{2}")))
+                val layout = clock.layout
+                for (line in 0 until layout.lineCount) {
+                    assertEquals(0, layout.getEllipsisCount(line))
+                    assertTrue(layout.getLineRight(line) <= clock.width - clock.totalPaddingLeft - clock.totalPaddingRight)
+                }
+            }
+            capture(context, "alarm-clock.png")
+            onView(withId(AlarmR.id.dismissButton)).perform(scrollTo()).check(matches(isDisplayed()))
+            capture(context, "alarm-actions.png")
+        }
+    }
+
+    private fun awaitNightMode(
+        context: Context,
+        expected: Int,
+    ) {
+        val deadline = System.currentTimeMillis() + 5_000
+        while ((context.resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK) != expected &&
+            System.currentTimeMillis() < deadline
+        ) {
+            Thread.sleep(50)
+        }
+        assertEquals(expected, context.resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK)
+    }
+
+    private fun capture(
+        context: Context,
+        name: String,
+    ) {
+        // 창 진입 애니메이션의 중간 프레임을 증빙으로 저장하지 않는다.
+        Thread.sleep(500)
+        val bitmap = InstrumentationRegistry.getInstrumentation().uiAutomation.takeScreenshot()
+        File(context.cacheDir, name).outputStream().use { bitmap.compress(Bitmap.CompressFormat.PNG, 100, it) }
+        bitmap.recycle()
+    }
+}
diff --git a/app/src/androidTest/java/com/example/slowclock/WindowAccessibilityTest.kt b/app/src/androidTest/java/com/example/slowclock/WindowAccessibilityTest.kt
new file mode 100644
index 00000000..ba2f7441
--- /dev/null
+++ b/app/src/androidTest/java/com/example/slowclock/WindowAccessibilityTest.kt
@@ -0,0 +1,87 @@
+package com.example.slowclock
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.hasScrollAction
+import androidx.compose.ui.test.hasText
+import androidx.compose.ui.test.junit4.v2.createComposeRule
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.performScrollToNode
+import androidx.test.espresso.Espresso.onView
+import androidx.test.espresso.action.ViewActions.click
+import androidx.test.espresso.assertion.ViewAssertions.doesNotExist
+import androidx.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
+import androidx.test.espresso.matcher.ViewMatchers.withClassName
+import androidx.test.espresso.matcher.ViewMatchers.withId
+import com.example.slowclock.ui.recommendation.RecommendationScreen
+import com.example.slowclock.ui.theme.SlowClockTheme
+import com.example.slowclock.ui.timeline.TimelineDatePickerDialog
+import org.hamcrest.Matchers.endsWith
+import org.junit.Assert.assertEquals
+import org.junit.Rule
+import org.junit.Test
+import java.util.Calendar
+
+class WindowAccessibilityTest {
+    @get:Rule
+    val compose = createComposeRule()
+
+    @Test
+    fun healthNoticeDoesNotPreventScrollingToStudentRecommendations() {
+        compose.setContent {
+            SlowClockTheme {
+                RecommendationScreen(onSelectRecommendation = {}, onNavigateBack = {})
+            }
+        }
+        compose.onNodeWithText("학생").performClick()
+        // LazyColumn 은 보이지 않는 줄을 아직 만들지 않는다. performScrollTo 는 이미 만들어진
+        // 줄만 찾으므로 화면이 짧거나 글자 배율이 높으면 노드를 못 찾고 실패한다. 목록을
+        // 스크롤해 가며 찾는 performScrollToNode 를 쓴다.
+        compose.onNode(hasScrollAction()).performScrollToNode(hasText("자습"))
+        compose.onNodeWithText("자습").assertIsDisplayed()
+    }
+
+    @Test
+    fun calendarIsRemovedWithItsScreenWithoutCallingDisposedCallbacks() {
+        var mounted by mutableStateOf(true)
+        var dismisses = 0
+        compose.setContent {
+            SlowClockTheme {
+                if (mounted) {
+                    TimelineDatePickerDialog(Calendar.getInstance(), { _, _, _ -> }, { dismisses++ })
+                }
+            }
+        }
+        onView(withClassName(endsWith("DatePicker"))).check(matches(isDisplayed()))
+        compose.runOnIdle { mounted = false }
+        compose.waitForIdle()
+        onView(withClassName(endsWith("DatePicker"))).check(doesNotExist())
+        compose.runOnIdle { assertEquals(0, dismisses) }
+    }
+
+    @Test
+    fun calendarUsesCurrentCallbackWithoutOpeningAnotherWindow() {
+        var generation by mutableIntStateOf(0)
+        var selectedGeneration = -1
+        var dismisses = 0
+        compose.setContent {
+            val current = generation
+            TimelineDatePickerDialog(
+                Calendar.getInstance(),
+                { _, _, _ -> selectedGeneration = current },
+                { dismisses++ },
+            )
+        }
+        compose.runOnIdle { generation = 1 }
+        onView(withId(android.R.id.button1)).perform(click())
+        compose.runOnIdle {
+            assertEquals(1, selectedGeneration)
+            assertEquals(1, dismisses)
+        }
+    }
+}
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 363cab3b..afd44c0d 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -68,6 +68,7 @@
         </activity>
         <activity
             android:name=".ui.alarm.AlarmFullScreenActivity"
+            android:theme="@style/Theme.SlowClock.Alarm"
             android:excludeFromRecents="true"
             android:launchMode="singleInstance"
             android:showOnLockScreen="true"
diff --git a/app/src/main/java/com/example/slowclock/MainActivity.kt b/app/src/main/java/com/example/slowclock/MainActivity.kt
index c329fd6c..de44ff07 100644
--- a/app/src/main/java/com/example/slowclock/MainActivity.kt
+++ b/app/src/main/java/com/example/slowclock/MainActivity.kt
@@ -12,6 +12,7 @@ import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
 import androidx.core.content.edit
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.lifecycleScope
@@ -117,7 +118,9 @@ class MainActivity : ComponentActivity() {
             enableEdgeToEdge()
             setContent {
                 // 테마는 사용자가 정보 화면에서 고른 값을 따른다. 기본은 기기 설정이다.
-                val themeMode by settingsRepository.observeThemeMode().collectAsStateWithLifecycle(ThemeMode.SYSTEM)
+                val initialTheme = remember { settingsRepository.getThemeMode() }
+                val themeFlow = remember { settingsRepository.observeThemeMode() }
+                val themeMode by themeFlow.collectAsStateWithLifecycle(initialTheme)
                 SlowClockTheme(
                     darkTheme =
                         when (themeMode) {
diff --git a/app/src/main/java/com/example/slowclock/SlowClockApplication.kt b/app/src/main/java/com/example/slowclock/SlowClockApplication.kt
index 1ad7020a..909adfb5 100644
--- a/app/src/main/java/com/example/slowclock/SlowClockApplication.kt
+++ b/app/src/main/java/com/example/slowclock/SlowClockApplication.kt
@@ -1,11 +1,21 @@
 package com.example.slowclock
 
 import android.app.Application
+import com.example.slowclock.data.remote.repository.SettingsRepository
 import dagger.hilt.android.HiltAndroidApp
+import javax.inject.Inject
 
 /**
  * Firebase 초기화는 google-services 플러그인이 넣는 FirebaseInitProvider 가 앱 시작 시 한다.
  * Firestore 오프라인 캐시 설정은 인스턴스를 제공하는 `FirebaseModule` 이 맡는다.
  */
 @HiltAndroidApp
-class SlowClockApplication : Application()
+class SlowClockApplication : Application() {
+    @Inject
+    lateinit var settingsRepository: SettingsRepository
+
+    override fun onCreate() {
+        super.onCreate()
+        settingsRepository.applyThemeMode()
+    }
+}
diff --git a/app/src/main/res/values-night/colors.xml b/app/src/main/res/values-night/colors.xml
new file mode 100644
index 00000000..ad7ebe9d
--- /dev/null
+++ b/app/src/main/res/values-night/colors.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- SlowClockTheme의 PaperBackground/NightBackground와 시작 창을 맞춘다. -->
+    <color name="window_background">#14120F</color>
+</resources>
diff --git a/app/src/main/res/values-night/themes.xml b/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..ce40abc4
--- /dev/null
+++ b/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="Theme.SlowClock" parent="android:Theme.Material.NoActionBar">
+        <item name="android:windowBackground">@color/window_background</item>
+        <item name="android:windowSplashScreenBackground">@color/window_background</item>
+        <item name="android:forceDarkAllowed">false</item>
+    </style>
+</resources>
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..65e15b65
--- /dev/null
+++ b/app/src/main/res/values/colors.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- SlowClockTheme의 PaperBackground/NightBackground와 시작 창을 맞춘다. -->
+    <color name="window_background">#FAF6F0</color>
+</resources>
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index e9f12e38..050cb99e 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -1,5 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-
-    <style name="Theme.SlowClock" parent="android:Theme.Material.Light.NoActionBar" />
-</resources>
\ No newline at end of file
+    <style name="Theme.SlowClock" parent="android:Theme.Material.Light.NoActionBar">
+        <item name="android:windowBackground">@color/window_background</item>
+        <item name="android:windowSplashScreenBackground">@color/window_background</item>
+        <item name="android:forceDarkAllowed">false</item>
+    </style>
+</resources>
diff --git a/app/src/screenshotTest/java/com/example/slowclock/RecommendationLargeTextScreenshotTest.kt b/app/src/screenshotTest/java/com/example/slowclock/RecommendationLargeTextScreenshotTest.kt
index 8a6f0cee..cb992daa 100644
--- a/app/src/screenshotTest/java/com/example/slowclock/RecommendationLargeTextScreenshotTest.kt
+++ b/app/src/screenshotTest/java/com/example/slowclock/RecommendationLargeTextScreenshotTest.kt
@@ -5,6 +5,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.tooling.preview.Preview
 import com.android.tools.screenshot.PreviewTest
 import com.example.slowclock.ui.addschedule.components.RecommendationPlaceholder
+import com.example.slowclock.ui.recommendation.RecommendationScreen
 import com.example.slowclock.ui.theme.SlowClockTheme
 
 @PreviewTest
@@ -18,3 +19,13 @@ internal fun RecommendationLargeTextScreenshot() {
         }
     }
 }
+
+@PreviewTest
+@Preview(name = "추천 안내 360", widthDp = 360, heightDp = 800)
+@Preview(name = "추천 안내 큰 글자 320", widthDp = 320, heightDp = 1000, fontScale = 2f)
+@Composable
+internal fun RecommendationHealthNoticeScreenshot() {
+    SlowClockTheme(darkTheme = false) {
+        RecommendationScreen(onSelectRecommendation = {}, onNavigateBack = {})
+    }
+}
diff --git a/app/src/screenshotTest/java/com/example/slowclock/ScheduleInputScreenshotTest.kt b/app/src/screenshotTest/java/com/example/slowclock/ScheduleInputScreenshotTest.kt
new file mode 100644
index 00000000..63cc58d2
--- /dev/null
+++ b/app/src/screenshotTest/java/com/example/slowclock/ScheduleInputScreenshotTest.kt
@@ -0,0 +1,45 @@
+package com.example.slowclock
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import com.android.tools.screenshot.PreviewTest
+import com.example.slowclock.ui.addschedule.ScheduleTimeInput
+import com.example.slowclock.ui.addschedule.components.TimePickerSection
+import com.example.slowclock.ui.addschedule.components.TitleInputSection
+import com.example.slowclock.ui.theme.SlowClockTheme
+
+@PreviewTest
+@Preview(name = "입력 안내 큰 글자 밝게", widthDp = 320, heightDp = 1600, fontScale = 2f)
+@Composable
+internal fun ScheduleInputLightScreenshot() = ScheduleInputPreview(dark = false)
+
+@PreviewTest
+@Preview(name = "입력 안내 큰 글자 어둡게", widthDp = 320, heightDp = 1600, fontScale = 2f)
+@Composable
+internal fun ScheduleInputDarkScreenshot() = ScheduleInputPreview(dark = true)
+
+@Composable
+private fun ScheduleInputPreview(dark: Boolean) {
+    SlowClockTheme(darkTheme = dark) {
+        Surface(color = MaterialTheme.colorScheme.background) {
+            Column(Modifier.fillMaxSize().verticalScroll(rememberScrollState()).padding(horizontal = 24.dp)) {
+                TitleInputSection(title = "", description = "", onTitleChange = {}, onDescriptionChange = {})
+                TimePickerSection(
+                    startTime = ScheduleTimeInput("14", "30"),
+                    endTime = ScheduleTimeInput("25", "00"),
+                    onTimeSelect = {},
+                    onEndTimeSelect = {},
+                )
+            }
+        }
+    }
+}
diff --git "a/app/src/screenshotTestDebug/reference/com/example/slowclock/RecommendationLargeTextScreenshotTestKt/RecommendationHealthNoticeScreenshot_\354\266\224\354\262\234 \354\225\210\353\202\264 360_8e1b16b0_0.png" "b/app/src/screenshotTestDebug/reference/com/example/slowclock/RecommendationLargeTextScreenshotTestKt/RecommendationHealthNoticeScreenshot_\354\266\224\354\262\234 \354\225\210\353\202\264 360_8e1b16b0_0.png"
new file mode 100644
index 00000000..4b2bac49
Binary files /dev/null and "b/app/src/screenshotTestDebug/reference/com/example/slowclock/RecommendationLargeTextScreenshotTestKt/RecommendationHealthNoticeScreenshot_\354\266\224\354\262\234 \354\225\210\353\202\264 360_8e1b16b0_0.png" differ
diff --git "a/app/src/screenshotTestDebug/reference/com/example/slowclock/RecommendationLargeTextScreenshotTestKt/RecommendationHealthNoticeScreenshot_\354\266\224\354\262\234 \354\225\210\353\202\264 \355\201\260 \352\270\200\354\236\220 320_0d6f6c2c_0.png" "b/app/src/screenshotTestDebug/reference/com/example/slowclock/RecommendationLargeTextScreenshotTestKt/RecommendationHealthNoticeScreenshot_\354\266\224\354\262\234 \354\225\210\353\202\264 \355\201\260 \352\270\200\354\236\220 320_0d6f6c2c_0.png"
new file mode 100644
index 00000000..dcb51d33
Binary files /dev/null and "b/app/src/screenshotTestDebug/reference/com/example/slowclock/RecommendationLargeTextScreenshotTestKt/RecommendationHealthNoticeScreenshot_\354\266\224\354\262\234 \354\225\210\353\202\264 \355\201\260 \352\270\200\354\236\220 320_0d6f6c2c_0.png" differ
diff --git "a/app/src/screenshotTestDebug/reference/com/example/slowclock/ScheduleInputScreenshotTestKt/ScheduleInputDarkScreenshot_\354\236\205\353\240\245 \354\225\210\353\202\264 \355\201\260 \352\270\200\354\236\220 \354\226\264\353\221\241\352\262\214_6d7d7fe0_0.png" "b/app/src/screenshotTestDebug/reference/com/example/slowclock/ScheduleInputScreenshotTestKt/ScheduleInputDarkScreenshot_\354\236\205\353\240\245 \354\225\210\353\202\264 \355\201\260 \352\270\200\354\236\220 \354\226\264\353\221\241\352\262\214_6d7d7fe0_0.png"
new file mode 100644
index 00000000..b86b55e4
Binary files /dev/null and "b/app/src/screenshotTestDebug/reference/com/example/slowclock/ScheduleInputScreenshotTestKt/ScheduleInputDarkScreenshot_\354\236\205\353\240\245 \354\225\210\353\202\264 \355\201\260 \352\270\200\354\236\220 \354\226\264\353\221\241\352\262\214_6d7d7fe0_0.png" differ
diff --git "a/app/src/screenshotTestDebug/reference/com/example/slowclock/ScheduleInputScreenshotTestKt/ScheduleInputLightScreenshot_\354\236\205\353\240\245 \354\225\210\353\202\264 \355\201\260 \352\270\200\354\236\220 \353\260\235\352\262\214_e4b84571_0.png" "b/app/src/screenshotTestDebug/reference/com/example/slowclock/ScheduleInputScreenshotTestKt/ScheduleInputLightScreenshot_\354\236\205\353\240\245 \354\225\210\353\202\264 \355\201\260 \352\270\200\354\236\220 \353\260\235\352\262\214_e4b84571_0.png"
new file mode 100644
index 00000000..5f636fb9
Binary files /dev/null and "b/app/src/screenshotTestDebug/reference/com/example/slowclock/ScheduleInputScreenshotTestKt/ScheduleInputLightScreenshot_\354\236\205\353\240\245 \354\225\210\353\202\264 \355\201\260 \352\270\200\354\236\220 \353\260\235\352\262\214_e4b84571_0.png" differ
diff --git a/core/alarm/src/main/java/com/example/slowclock/ui/alarm/AlarmFullScreenActivity.kt b/core/alarm/src/main/java/com/example/slowclock/ui/alarm/AlarmFullScreenActivity.kt
index 56216c74..af3faa70 100644
--- a/core/alarm/src/main/java/com/example/slowclock/ui/alarm/AlarmFullScreenActivity.kt
+++ b/core/alarm/src/main/java/com/example/slowclock/ui/alarm/AlarmFullScreenActivity.kt
@@ -108,12 +108,13 @@ class AlarmFullScreenActivity : Activity() {
     }
 
     private fun updateCurrentTime(timeTextView: TextView) {
+        val formatter = SimpleDateFormat("a h:mm", Locale.KOREAN)
         timeRunnable =
             object : Runnable {
                 override fun run() {
-                    val sdf = SimpleDateFormat("HH:mm:ss", Locale.getDefault())
-                    timeTextView.text = sdf.format(Date())
-                    timeHandler.postDelayed(this, 1000)
+                    val now = System.currentTimeMillis()
+                    timeTextView.text = formatter.format(Date(now))
+                    timeHandler.postDelayed(this, 60_000L - now % 60_000L)
                 }
             }
         timeHandler.post(timeRunnable)
@@ -150,7 +151,7 @@ class AlarmFullScreenActivity : Activity() {
         startService(AlarmTriggerService.dismissIntent(this, ringingRequestCode(), intent.getStringExtra(AlarmNotifications.EXTRA_TOKEN)))
     }
 
-    /** 화면이 안 보이면 시계를 멈춘다. 보이지 않는 화면을 1초마다 다시 그릴 이유가 없다(#131). */
+    /** 화면이 안 보이면 시계를 멈춘다. 보이지 않는 화면을 다시 그릴 이유가 없다(#131). */
     override fun onStop() {
         super.onStop()
         timeHandler.removeCallbacks(timeRunnable)
diff --git a/core/alarm/src/main/res/layout/activity_alarm_fullscreen.xml b/core/alarm/src/main/res/layout/activity_alarm_fullscreen.xml
index 92a8f317..b4ce9ebe 100644
--- a/core/alarm/src/main/res/layout/activity_alarm_fullscreen.xml
+++ b/core/alarm/src/main/res/layout/activity_alarm_fullscreen.xml
@@ -6,6 +6,7 @@
   #107 에서 화면 밝기 선택에 같은 함정이 있었고 같은 방법으로 고쳤다(#132).
 -->
 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="@drawable/alarm_background"
@@ -20,11 +21,12 @@
 
         <TextView
             android:id="@+id/currentTimeText"
-            android:layout_width="wrap_content"
+            android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginBottom="24dp"
             android:fontFamily="monospace"
-            android:text="00:00:00"
+            tools:text="오전 12:00"
+            android:textAlignment="center"
             android:textColor="@color/alarm_on_background"
             android:textSize="48sp"
             android:textStyle="bold" />
diff --git a/core/alarm/src/main/res/values/themes.xml b/core/alarm/src/main/res/values/themes.xml
new file mode 100644
index 00000000..dfc26799
--- /dev/null
+++ b/core/alarm/src/main/res/values/themes.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="Theme.SlowClock.Alarm" parent="android:Theme.Material.NoActionBar">
+        <item name="android:windowBackground">@color/alarm_background_start</item>
+        <item name="android:windowSplashScreenBackground">@color/alarm_background_start</item>
+        <item name="android:forceDarkAllowed">false</item>
+    </style>
+</resources>
diff --git a/core/data/src/main/java/com/example/slowclock/data/remote/repository/SettingsRepository.kt b/core/data/src/main/java/com/example/slowclock/data/remote/repository/SettingsRepository.kt
index d17a9c2c..34e2c8db 100644
--- a/core/data/src/main/java/com/example/slowclock/data/remote/repository/SettingsRepository.kt
+++ b/core/data/src/main/java/com/example/slowclock/data/remote/repository/SettingsRepository.kt
@@ -1,5 +1,6 @@
 package com.example.slowclock.data.remote.repository
 
+import android.app.UiModeManager
 import android.content.Context
 import android.content.SharedPreferences
 import com.example.slowclock.data.model.ThemeMode
@@ -22,6 +23,7 @@ class SettingsRepository
         @ApplicationContext context: Context,
     ) {
         private val prefs: SharedPreferences = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
+        private val uiModeManager by lazy { context.getSystemService(UiModeManager::class.java) }
 
         fun getShareCode(): String? = prefs.getString(KEY_SHARE_CODE, null)?.takeIf { it.isNotBlank() }
 
@@ -43,6 +45,27 @@ class SettingsRepository
 
         fun setThemeMode(mode: ThemeMode) {
             prefs.edit().putString(KEY_THEME_MODE, mode.name).apply()
+            applyThemeMode()
+        }
+
+        /**
+         * Android 12 이상의 시작 창도 Compose에서 고른 테마를 따른다.
+         * https://developer.android.com/develop/ui/views/theming/darktheme
+         *
+         * SYSTEM 에 MODE_NIGHT_AUTO 를 주는 것은 상수 이름만 보면 어긋나 보인다. 문서상 AUTO 는
+         * "위치·시간에 따라 자동 전환" 이지만, UiModeManagerService 는 YES/NO 가 아닌 값을 모두
+         * UI_MODE_NIGHT_UNDEFINED 로 바꿔 앱별 override 를 지운다. 그래서 실제 동작이 "기기 설정을
+         * 따른다" 가 된다. override 를 지우는 별도 API 는 없다. 이름만 보고 MODE_NIGHT_NO 로
+         * 고치면 SYSTEM 이 항상 밝은 테마로 굳으니 바꾸지 말 것.
+         */
+        fun applyThemeMode() {
+            val nightMode =
+                when (getThemeMode()) {
+                    ThemeMode.SYSTEM -> UiModeManager.MODE_NIGHT_AUTO
+                    ThemeMode.LIGHT -> UiModeManager.MODE_NIGHT_NO
+                    ThemeMode.DARK -> UiModeManager.MODE_NIGHT_YES
+                }
+            uiModeManager?.setApplicationNightMode(nightMode)
         }
 
         /** 현재 값을 먼저 내고, 바뀔 때마다 다시 낸다. */
diff --git a/core/data/src/test/java/com/example/slowclock/data/SettingsThemeTest.kt b/core/data/src/test/java/com/example/slowclock/data/SettingsThemeTest.kt
new file mode 100644
index 00000000..d03d0653
--- /dev/null
+++ b/core/data/src/test/java/com/example/slowclock/data/SettingsThemeTest.kt
@@ -0,0 +1,42 @@
+package com.example.slowclock.data
+
+import android.app.UiModeManager
+import android.content.Context
+import android.content.SharedPreferences
+import com.example.slowclock.data.model.ThemeMode
+import com.example.slowclock.data.remote.repository.SettingsRepository
+import io.mockk.every
+import io.mockk.mockk
+import io.mockk.verify
+import org.junit.Test
+
+class SettingsThemeTest {
+    private val preferences = mockk<SharedPreferences>()
+    private val manager = mockk<UiModeManager>(relaxed = true)
+    private val context =
+        mockk<Context> {
+            every { getSharedPreferences(any(), any()) } returns preferences
+            every { getSystemService(UiModeManager::class.java) } returns manager
+        }
+
+    @Test
+    fun savedDarkModeOverridesLightSystemBeforeFirstScreen() {
+        every { preferences.getString("theme_mode", null) } returns ThemeMode.DARK.name
+        SettingsRepository(context).applyThemeMode()
+        verify(exactly = 1) { manager.setApplicationNightMode(UiModeManager.MODE_NIGHT_YES) }
+    }
+
+    @Test
+    fun systemModeClearsAppOverride() {
+        every { preferences.getString("theme_mode", null) } returns ThemeMode.SYSTEM.name
+        SettingsRepository(context).applyThemeMode()
+        verify(exactly = 1) { manager.setApplicationNightMode(UiModeManager.MODE_NIGHT_AUTO) }
+    }
+
+    @Test
+    fun savedLightModeOverridesDarkSystem() {
+        every { preferences.getString("theme_mode", null) } returns ThemeMode.LIGHT.name
+        SettingsRepository(context).applyThemeMode()
+        verify(exactly = 1) { manager.setApplicationNightMode(UiModeManager.MODE_NIGHT_NO) }
+    }
+}
diff --git a/core/ui/src/main/java/com/example/slowclock/ui/common/components/ScheduleRow.kt b/core/ui/src/main/java/com/example/slowclock/ui/common/components/ScheduleRow.kt
index 018e8992..df533e48 100644
--- a/core/ui/src/main/java/com/example/slowclock/ui/common/components/ScheduleRow.kt
+++ b/core/ui/src/main/java/com/example/slowclock/ui/common/components/ScheduleRow.kt
@@ -157,7 +157,10 @@ private fun ScheduleRowSurface(
     content: @Composable () -> Unit,
 ) {
     val color = if (completed) MaterialTheme.colorScheme.surfaceContainerLow else MaterialTheme.colorScheme.surface
-    val border = BorderStroke(1.dp, MaterialTheme.colorScheme.outlineVariant)
+    // 어두운 모드에서는 surface 와 background 가 같은 값이라 칸을 가르는 것이 이 선 하나뿐이다.
+    // outlineVariant 는 배경 대비 2.02:1 로 WCAG 1.4.11 의 3:1 에 못 미쳐 칸 경계가 보이지 않았다.
+    // outline 은 같은 자리에서 5.84:1(어두운 모드)·4.13:1(밝은 모드)이다.
+    val border = BorderStroke(1.dp, MaterialTheme.colorScheme.outline)
     if (onClick == null) {
         Surface(modifier = modifier, shape = MaterialTheme.shapes.medium, color = color, border = border, content = content)
     } else {
diff --git a/docs/play-release.md b/docs/play-release.md
index 3b20fc5c..ae3f8827 100644
--- a/docs/play-release.md
+++ b/docs/play-release.md
@@ -69,7 +69,7 @@ PR #199에서 Functions의 `qs`를 `6.16.0`으로 제한 업데이트하고 Node
 | 광고 | 광고 없음 | 광고 SDK 없음, `AD_ID` 권한 제거 |
 | 앱 액세스 | 일부 기능 제한(로그인 필요). 안내문: "Google 계정으로 로그인하면 일정·알람·공유 코드 열람을 사용할 수 있습니다. 별도 가입 승인, 유료 구독이나 초대 제한은 없습니다. 공유를 확인하려면 한 계정의 내 정보에 표시되는 코드를 다른 계정의 공유 화면에 입력하세요." | Firebase UI Google 로그인만 제공. 현재 동작하지 않는 보호자 푸시까지 모든 기능 사용 가능 문구로 약속하지 않음 |
 | 콘텐츠 등급 | 앱 유형 「유틸리티·생산성·커뮤니케이션·기타」. 폭력·성적 내용·욕설·약물·도박 전부 「아니오」. 사용자 간 상호작용 「예」(공유 코드를 받은 사람이 그 사람의 일정과 이름을 본다), 개인정보 공유 「예」(이름·일정을 본인이 코드를 알려 준 사람과 공유), 위치 공유 「아니오」, 디지털 구매 「아니오」 | 공유 코드 기능(정보 화면). 가족 그룹을 만드는 화면은 앱에 없다 — `familyGroups` 컬렉션은 계정 삭제 때 정리하는 용도로만 남아 있다 |
-| 타겟층 | 18세 이상만 선택. 어린이 대상 아님 | 어르신·보호자용 앱 |
+| 타겟층 | 18세 이상만 선택. 어린이 대상 아님 | 어르신·보호자용 앱. 추천 화면의 「학생」 묶음(자습·공부량 확인·휴식하기·복습하기)을 이 선언과 대조했다(#220). 넷 다 성인 학습자도 그대로 쓰는 말이고 교복·학교·학년처럼 미성년을 가리키는 표현, 아동 대상 소재, 학교 일과 전제가 없어 문구를 바꾸지 않았다 |
 | 뉴스 앱 | 아니오 | 정보 탭은 메디컬타임즈로 이동하는 버튼 하나뿐이고 기사를 앱 안에 표시하지 않는다(#51) |
 | 정부 앱 | 아니오 | |
 | 금융 기능 | 없음 | |
@@ -93,14 +93,11 @@ Analytics 계정 데이터 공유는 Google 제품 및 서비스 꺼짐, 참여
 
 ### 스크린샷 촬영 절차
 
-휴대전화 스크린샷은 2장 이상 8장 이하, 1080×2400(9:20) PNG 로 낸다. 로그인된 기기가 필요하다.
+휴대전화 스크린샷은 2~8장이다. 현재 준비한 4장은 실제 화면 코드의 Preview를 Linux CI에서 1080×1920(9:16)으로 렌더한다. 계정에 접속하거나 운영 일정을 만들 필요가 없다. 이미지 위치·순서·재생성 절차는 [스토어 등록 소재](play/listing.md#스토어-등록-정보-자료)를 따른다.
 
-1. 에뮬레이터 `Pixel_7_Claude_QA`(1080×2400, Play Store 이미지)에 Google 계정으로 로그인한다.
-2. `./gradlew :app:installDebug` 로 설치하고 앱을 열어 Google 로그인을 마친다.
-3. 첫 실행에 정확한 알람 권한 안내가 한 번 뜬다(#83). 「설정 열기」 로 허용해 두면 다음 실행부터 나오지 않는다.
-4. 오늘 날짜로 일정을 서너 개 만든다. 하나는 완료로 표시한다. 더미 데이터는 #59 에서 지웠기 때문에 직접 넣어야 화면이 채워진다.
-5. 화면마다 `adb exec-out screencap -p > docs/play/screenshot-<n>.png` 로 찍는다. 순서: 메인(오늘 일정과 현재 할 일), 일정 추가, 타임라인, 완료, 알람 전체 화면.
-6. 개인 정보(이메일·이름)가 보이는 화면은 테스트 계정으로 찍는다.
+[Play 공식 규격](https://support.google.com/googleplay/android-developer/answer/9866151?hl=en-GB)은 JPEG 또는 24비트 PNG(알파 없음), 짧은 변 320px 이상·긴 변 3840px 이하·긴 변이 짧은 변의 2배 이하를 요구한다. 앱 홍보에는 1080px 이상과 세로 9:16을 권장한다. 이전 1080×2400(9:20) 안내는 이 비율 요건에 맞지 않아 교체했다.
+
+추가 동작 증빙이 필요하면 전용 에뮬레이터와 테스트 데이터만 사용한다. 개인 정보가 보이는 화면은 제외한다. Play Console 업로드·미리보기 확인과 실물 기기 점검은 별도 단계다.
 
 ## AAB 빌드와 로컬 검증
 
diff --git a/docs/play/ic_launcher_512.png b/docs/play/ic_launcher_512.png
index 55853f1a..5fed4ee5 100644
Binary files a/docs/play/ic_launcher_512.png and b/docs/play/ic_launcher_512.png differ
diff --git a/docs/play/listing.md b/docs/play/listing.md
index 0437dc7c..d44aa027 100644
--- a/docs/play/listing.md
+++ b/docs/play/listing.md
@@ -48,11 +48,13 @@
 
 ## 스토어 등록 정보 자료
 
+규격은 [Play 미리보기 자료 사양](https://support.google.com/googleplay/android-developer/answer/9866151)의 요구를 그대로 적은 것이다. 아이콘만 32비트(알파 포함)를 요구하고, 그래픽 이미지와 스크린샷은 알파가 없는 24비트를 요구한다.
+
 | 자료 | 파일 | 규격 |
 |---|---|---|
-| 앱 아이콘 | `docs/play/ic_launcher_512.png` | 512×512 PNG, 투명 없음 |
-| 그래픽 이미지 | `docs/play/feature_graphic_1024x500.png` | 1024×500 PNG |
-| 휴대전화 스크린샷 | `docs/play/screenshots/` 4장 | 2~8장, 1080×2400 PNG |
+| 앱 아이콘 | `docs/play/ic_launcher_512.png` | 512×512, 32비트 PNG(알파 포함), 1024KB 이하. 그림 자체는 불투명하다 |
+| 그래픽 이미지 | `docs/play/feature_graphic_1024x500.png` | 1024×500, 24비트 PNG(알파 없음) |
+| 휴대전화 스크린샷 | `docs/play/screenshots/` 4장 | 2~8장, 1080×1920, 24비트 PNG(알파 없음). 긴 변이 짧은 변의 2배를 넘으면 안 된다 |
 
 올릴 순서와 파일이다.
 
@@ -63,20 +65,29 @@
 | 3 | `docs/play/screenshots/02-done.png` | 완료한 일 |
 | 4 | `docs/play/screenshots/04-dark.png` | 어두운 모드 |
 
-네 장은 앱의 화면 코드를 그대로 그려 만들었다. 만드는 자리는 `feature/main/src/screenshotTest/.../StoreScreenshotTest.kt` 이고, 렌더 결과는 그 모듈의 baseline 으로 먼저 들어간다. 여기 있는 넉 장은 그 baseline 을 옮겨 온 사본이다.
+네 장은 앱의 화면 코드를 그대로 그려 만들었다. 만드는 자리는 `feature/main/src/screenshotTest/.../StoreScreenshotTest.kt` 이고, 렌더 결과는 그 모듈의 baseline 으로 먼저 들어간다. 여기 있는 넉 장은 그 baseline의 RGB 픽셀을 그대로 보존한 24비트 PNG 내보내기다.
 
-baseline 이 바뀌면 이 사본도 함께 옮겨야 한다. 화면을 고쳤는데 옮기지 않으면 스토어 그림만 옛 화면으로 남는다(#155). 옮기는 자리는 이 넷이다.
+baseline이 바뀌면 이 사본도 함께 다시 내보내야 한다. 화면을 고쳤는데 옮기지 않으면 스토어 그림만 옛 화면으로 남는다(#155). 옮기는 자리는 이 넷이다.
 
 | baseline | 여기 |
 |---|---|
-| `StoreMainScreenshot_스토어 메인_768e228a_0.png` | `01-main.png` |
-| `StoreDoneScreenshot_스토어 완료_9c836483_0.png` | `02-done.png` |
-| `StoreTimelineScreenshot_스토어 시간표_1683b525_0.png` | `03-timeline.png` |
-| `StoreDarkScreenshot_스토어 어두운 모드_dde69d6e_0.png` | `04-dark.png` |
+| `StoreMainScreenshot_스토어 메인_67c6756c_0.png` | `01-main.png` |
+| `StoreDoneScreenshot_스토어 완료_eef9ef9e_0.png` | `02-done.png` |
+| `StoreTimelineScreenshot_스토어 시간표_d0dba646_0.png` | `03-timeline.png` |
+| `StoreDarkScreenshot_스토어 어두운 모드_665a3c63_0.png` | `04-dark.png` |
+
+baseline 은 macOS 렌더와 CI(Linux) 렌더가 달라 로컬에서 만들지 않는다. PR 에 `screenshot-baseline` 라벨을 붙여 CI 컨테이너가 갱신하게 한 뒤, 그 결과를 받은 뒤 `scripts/export-play-screenshots.sh`를 실행한다. 기존 PNG에 투명한 픽셀이 하나라도 있으면 내보내기를 거부한다. `scripts/export-play-screenshots.sh --check`는 1080×1920·24비트·알파 없음 및 CI baseline과 모든 RGB 픽셀이 같은지 검사한다. JDK에 포함된 ImageIO만 사용하므로 추가 라이브러리가 필요 없다.
+
+알람 전체 화면과 공유 코드 화면은 선택적인 추가 소재다. 현재 네 장으로 최소 장수 조건을 충족하며, 추가 촬영이 필요하면 전용 에뮬레이터와 테스트 데이터만 사용한다. 계정·개인 정보가 포함된 화면을 스토어 소재로 사용하지 않는다.
 
-baseline 은 macOS 렌더와 CI(Linux) 렌더가 달라 로컬에서 만들지 않는다. PR 에 `screenshot-baseline` 라벨을 붙여 CI 컨테이너가 갱신하게 한 뒤, 그 결과를 받아 위 표대로 옮긴다.
+### 대체 텍스트
 
-알람이 울리는 전체 화면과 공유 코드 화면은 남았다. 실제 동작과 계정이 있어야 자연스러워서 기기에서 찍는다. 에뮬레이터 `Pixel_7_Claude_QA`(1080×2400) 에 Google 계정으로 로그인한 뒤 `adb exec-out screencap -p > 파일.png` 로 찍는다. Play 는 두 장부터 받으므로 이 두 장이 없어도 등록은 막히지 않는다.
+- 아이콘: 시계 바늘과 하트로 표현한 느린 시계 앱 아이콘.
+- 그래픽: 느린 시계. 큰 글씨로 보는 오늘의 일정과 정시 알람.
+- 메인: 오늘 할 일과 진행 상황, 다음 일정의 시간과 제목을 보여 주는 화면.
+- 시간표: 선택한 날짜의 일정을 시간 순서대로 보여 주는 화면.
+- 완료: 오늘 완료한 일정과 진행 상태를 확인하는 화면.
+- 어두운 모드: 어두운 배경에서 오늘 할 일과 다음 일정을 확인하는 화면.
 
 ## 연락처
 
diff --git a/docs/play/screenshots/01-main.png b/docs/play/screenshots/01-main.png
index 47fa6038..66a64346 100644
Binary files a/docs/play/screenshots/01-main.png and b/docs/play/screenshots/01-main.png differ
diff --git a/docs/play/screenshots/02-done.png b/docs/play/screenshots/02-done.png
index d4d1711c..20ff3f64 100644
Binary files a/docs/play/screenshots/02-done.png and b/docs/play/screenshots/02-done.png differ
diff --git a/docs/play/screenshots/03-timeline.png b/docs/play/screenshots/03-timeline.png
index f07f8d0d..1251bbe4 100644
Binary files a/docs/play/screenshots/03-timeline.png and b/docs/play/screenshots/03-timeline.png differ
diff --git a/docs/play/screenshots/04-dark.png b/docs/play/screenshots/04-dark.png
index 43acab74..15910b03 100644
Binary files a/docs/play/screenshots/04-dark.png and b/docs/play/screenshots/04-dark.png differ
diff --git a/feature/addschedule/src/main/java/com/example/slowclock/ui/addschedule/components/TimePickerSection.kt b/feature/addschedule/src/main/java/com/example/slowclock/ui/addschedule/components/TimePickerSection.kt
index a4e53e42..d70b8057 100644
--- a/feature/addschedule/src/main/java/com/example/slowclock/ui/addschedule/components/TimePickerSection.kt
+++ b/feature/addschedule/src/main/java/com/example/slowclock/ui/addschedule/components/TimePickerSection.kt
@@ -21,12 +21,20 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.semantics.LiveRegionMode
+import androidx.compose.ui.semantics.liveRegion
+import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
+import com.example.slowclock.feature.addschedule.R
 import com.example.slowclock.ui.addschedule.ScheduleTimeInput
+import com.example.slowclock.ui.common.components.rememberTimeText
+import java.util.Calendar
 
 @Composable
 fun TimePickerSection(
@@ -40,10 +48,15 @@ fun TimePickerSection(
         modifier =
             modifier
                 .fillMaxWidth()
-                .padding(24.dp),
+                .padding(vertical = 24.dp),
         verticalArrangement = Arrangement.spacedBy(24.dp),
     ) {
         Text("시간 설정", style = MaterialTheme.typography.titleLarge)
+        Text(
+            stringResource(R.string.schedule_time_format_hint),
+            style = MaterialTheme.typography.bodyMedium,
+            color = MaterialTheme.colorScheme.onSurfaceVariant,
+        )
 
         // 시작 시간
         Card(
@@ -67,6 +80,7 @@ fun TimePickerSection(
                             onTimeSelect(startTime.copy(hour = it.filter { c -> c.isDigit() }.take(2)))
                         },
                         label = { Text("시") },
+                        isError = !startTime.isValid,
                         modifier = Modifier.weight(1f),
                         textStyle = LocalTextStyle.current.copy(textAlign = TextAlign.Center),
                         singleLine = true,
@@ -79,12 +93,14 @@ fun TimePickerSection(
                             onTimeSelect(startTime.copy(minute = it.filter { c -> c.isDigit() }.take(2)))
                         },
                         label = { Text("분") },
+                        isError = !startTime.isValid,
                         modifier = Modifier.weight(1f),
                         textStyle = LocalTextStyle.current.copy(textAlign = TextAlign.Center),
                         singleLine = true,
                         keyboardOptions = KeyboardOptions.Default.copy(keyboardType = KeyboardType.Number),
                     )
                 }
+                TimeInputFeedback(startTime, required = true)
             }
         }
 
@@ -110,6 +126,7 @@ fun TimePickerSection(
                             onEndTimeSelect(endTime.copy(hour = it.filter { c -> c.isDigit() }.take(2)))
                         },
                         label = { Text("시") },
+                        isError = !endTime.isEmpty && !endTime.isValid,
                         modifier = Modifier.weight(1f),
                         textStyle = LocalTextStyle.current.copy(textAlign = TextAlign.Center),
                         singleLine = true,
@@ -122,13 +139,49 @@ fun TimePickerSection(
                             onEndTimeSelect(endTime.copy(minute = it.filter { c -> c.isDigit() }.take(2)))
                         },
                         label = { Text("분") },
+                        isError = !endTime.isEmpty && !endTime.isValid,
                         modifier = Modifier.weight(1f),
                         textStyle = LocalTextStyle.current.copy(textAlign = TextAlign.Center),
                         singleLine = true,
                         keyboardOptions = KeyboardOptions.Default.copy(keyboardType = KeyboardType.Number),
                     )
                 }
+                TimeInputFeedback(endTime, required = false)
             }
         }
     }
 }
+
+/**
+ * 입력한 시각을 글로 되읽어 준다. [required] 인 시작 시간은 비어 있어도 안내를 내야 한다.
+ * 종전에는 시작 시간을 다 지우면 저장 버튼만 잠기고 화면 어디에도 이유가 없었다.
+ *
+ * liveRegion 을 두는 이유: 안내가 칸의 형제 Text 라 화면 낭독기가 칸에 머무는 동안에는 읽지
+ * 않는다. 값이 바뀔 때 스스로 읽히게 해야 눈으로 보지 않는 사람도 되읽기를 받는다.
+ */
+@Composable
+private fun TimeInputFeedback(
+    input: ScheduleTimeInput,
+    required: Boolean,
+) {
+    val date = input.onDate(remember { Calendar.getInstance() })
+    val feedbackModifier =
+        Modifier
+            .padding(top = 8.dp)
+            .semantics { liveRegion = LiveRegionMode.Polite }
+    if (date != null) {
+        Text(
+            stringResource(R.string.schedule_time_readback, rememberTimeText(date.time)),
+            modifier = feedbackModifier,
+            style = MaterialTheme.typography.bodyMedium,
+            color = MaterialTheme.colorScheme.onSurfaceVariant,
+        )
+    } else if (required || !input.isEmpty) {
+        Text(
+            stringResource(R.string.schedule_time_range_hint),
+            modifier = feedbackModifier,
+            style = MaterialTheme.typography.bodyMedium,
+            color = MaterialTheme.colorScheme.error,
+        )
+    }
+}
diff --git a/feature/addschedule/src/main/java/com/example/slowclock/ui/addschedule/components/TitleInputSection.kt b/feature/addschedule/src/main/java/com/example/slowclock/ui/addschedule/components/TitleInputSection.kt
index 64cdb183..3b58d61c 100644
--- a/feature/addschedule/src/main/java/com/example/slowclock/ui/addschedule/components/TitleInputSection.kt
+++ b/feature/addschedule/src/main/java/com/example/slowclock/ui/addschedule/components/TitleInputSection.kt
@@ -12,7 +12,9 @@ import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
+import com.example.slowclock.feature.addschedule.R
 
 @Composable
 fun TitleInputSection(
@@ -28,8 +30,10 @@ fun TitleInputSection(
         elevation = CardDefaults.cardElevation(defaultElevation = 0.dp),
     ) {
         Column(modifier = Modifier.padding(24.dp)) {
+            // 필수 표시는 머리글이 지고 칸에는 label 을 두지 않는다. label 을 두면 Material3 가
+            // 빈 칸에서 placeholder 를 감춰, 처음 보는 화면에서 "무엇을 할까요?" 가 사라진다.
             Text(
-                text = "할 일",
+                text = stringResource(R.string.schedule_title_required),
                 style = MaterialTheme.typography.titleLarge,
                 color = MaterialTheme.colorScheme.onSurface,
                 modifier = Modifier.padding(bottom = 16.dp),
@@ -37,6 +41,9 @@ fun TitleInputSection(
             OutlinedTextField(
                 value = title,
                 onValueChange = onTitleChange,
+                // 저장 조건은 빈칸일 때만 알리지 않는다. 글자를 처음 넣는 순간 안내가 사라지면
+                // 그 높이만큼 아래 칸들이 딸려 올라온다. 큰 글자에서는 100dp 넘게 튄다.
+                supportingText = { Text(stringResource(R.string.schedule_title_required_hint)) },
                 placeholder = {
                     Text(
                         "무엇을 할까요?",
diff --git a/feature/addschedule/src/main/res/values/strings.xml b/feature/addschedule/src/main/res/values/strings.xml
index a4986150..d253bec4 100644
--- a/feature/addschedule/src/main/res/values/strings.xml
+++ b/feature/addschedule/src/main/res/values/strings.xml
@@ -2,4 +2,9 @@
 <resources>
     <string name="retry_saved_alarm">알람 다시 예약</string>
     <string name="return_to_saved_schedules">목록으로 돌아가기</string>
+    <string name="schedule_title_required">할 일 (필수)</string>
+    <string name="schedule_title_required_hint">할 일을 적어야 저장할 수 있습니다.</string>
+    <string name="schedule_time_format_hint">24시간제로 입력해 주세요. 오후 2시는 14시입니다.</string>
+    <string name="schedule_time_readback">입력한 시간: %1$s</string>
+    <string name="schedule_time_range_hint">시는 0~23, 분은 0~59를 모두 입력해 주세요.</string>
 </resources>
diff --git a/feature/main/src/main/java/com/example/slowclock/ui/timeline/TimelineDatePickerDialog.kt b/feature/main/src/main/java/com/example/slowclock/ui/timeline/TimelineDatePickerDialog.kt
new file mode 100644
index 00000000..57b462f1
--- /dev/null
+++ b/feature/main/src/main/java/com/example/slowclock/ui/timeline/TimelineDatePickerDialog.kt
@@ -0,0 +1,38 @@
+package com.example.slowclock.ui.timeline
+
+import android.app.DatePickerDialog
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.rememberUpdatedState
+import androidx.compose.ui.platform.LocalContext
+import java.util.Calendar
+
+/** 화면을 떠나거나 Activity가 바뀌면 달력 창도 함께 닫는다. */
+@Composable
+fun TimelineDatePickerDialog(
+    selectedDate: Calendar,
+    onSelectDate: (Int, Int, Int) -> Unit,
+    onDismiss: () -> Unit,
+) {
+    val context = LocalContext.current
+    val currentOnSelectDate by rememberUpdatedState(onSelectDate)
+    val currentOnDismiss by rememberUpdatedState(onDismiss)
+    DisposableEffect(context) {
+        val dialog =
+            DatePickerDialog(
+                context,
+                { _, year, month, day -> currentOnSelectDate(year, month, day) },
+                selectedDate.get(Calendar.YEAR),
+                selectedDate.get(Calendar.MONTH),
+                selectedDate.get(Calendar.DAY_OF_MONTH),
+            )
+        dialog.setOnDismissListener { currentOnDismiss() }
+        dialog.show()
+        onDispose {
+            // 폐기된 화면의 상태를 뒤늦게 바꾸지 않는다.
+            dialog.setOnDismissListener(null)
+            dialog.dismiss()
+        }
+    }
+}
diff --git a/feature/main/src/main/java/com/example/slowclock/ui/timeline/TimelineScreen.kt b/feature/main/src/main/java/com/example/slowclock/ui/timeline/TimelineScreen.kt
index 1639bfb0..68798ff8 100644
--- a/feature/main/src/main/java/com/example/slowclock/ui/timeline/TimelineScreen.kt
+++ b/feature/main/src/main/java/com/example/slowclock/ui/timeline/TimelineScreen.kt
@@ -1,7 +1,5 @@
 package com.example.slowclock.ui.timeline
 
-import android.app.DatePickerDialog
-import android.widget.DatePicker
 import androidx.compose.foundation.gestures.detectHorizontalDragGestures
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
@@ -25,11 +23,11 @@ import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberUpdatedState
+import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.pointer.pointerInput
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.unit.dp
 import androidx.hilt.lifecycle.viewmodel.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
@@ -38,7 +36,6 @@ import com.example.slowclock.ui.common.components.EmptyState
 import com.example.slowclock.ui.common.components.ErrorCard
 import com.example.slowclock.ui.common.components.ScreenHeader
 import com.example.slowclock.ui.common.components.rememberDayText
-import java.util.Calendar
 
 private const val SWIPE_THRESHOLD_PX = 100f
 
@@ -64,7 +61,7 @@ internal fun TimelineContent(
     onIntent: (TimelineIntent) -> Unit,
     modifier: Modifier = Modifier,
 ) {
-    val context = LocalContext.current
+    var showCalendar by rememberSaveable { mutableStateOf(false) }
     val currentOnIntent by rememberUpdatedState(onIntent)
     val selectedDate = state.selectedDate
     val dayText = rememberDayText(selectedDate.time)
@@ -91,7 +88,7 @@ internal fun TimelineContent(
             dayText = dayText,
             onPrevious = { onIntent(TimelineIntent.PreviousDay) },
             onNext = { onIntent(TimelineIntent.NextDay) },
-            onPickDate = { showDatePicker(context, selectedDate, onIntent) },
+            onPickDate = { showCalendar = true },
         )
 
         state.error?.let { error ->
@@ -117,6 +114,13 @@ internal fun TimelineContent(
             Timeline(items = state.schedules)
         }
     }
+    if (showCalendar) {
+        TimelineDatePickerDialog(
+            selectedDate = selectedDate,
+            onSelectDate = { year, month, day -> currentOnIntent(TimelineIntent.SelectDate(year, month, day)) },
+            onDismiss = { showCalendar = false },
+        )
+    }
 }
 
 /** 날짜 이동 줄. 화살표는 하루씩, 가운데 날짜는 달력을 연다. */
@@ -162,19 +166,3 @@ private fun DayPicker(
         }
     }
 }
-
-private fun showDatePicker(
-    context: android.content.Context,
-    selectedDate: Calendar,
-    onIntent: (TimelineIntent) -> Unit,
-) {
-    DatePickerDialog(
-        context,
-        { _: DatePicker, year: Int, month: Int, dayOfMonth: Int ->
-            onIntent(TimelineIntent.SelectDate(year, month, dayOfMonth))
-        },
-        selectedDate.get(Calendar.YEAR),
-        selectedDate.get(Calendar.MONTH),
-        selectedDate.get(Calendar.DAY_OF_MONTH),
-    ).show()
-}
diff --git a/feature/main/src/screenshotTest/java/com/example/slowclock/ui/StoreScreenshotTest.kt b/feature/main/src/screenshotTest/java/com/example/slowclock/ui/StoreScreenshotTest.kt
index 8cb1a675..8c072707 100644
--- a/feature/main/src/screenshotTest/java/com/example/slowclock/ui/StoreScreenshotTest.kt
+++ b/feature/main/src/screenshotTest/java/com/example/slowclock/ui/StoreScreenshotTest.kt
@@ -22,11 +22,11 @@ import java.util.Date
 // Play 스토어 등록 정보에 올릴 화면. 로그인한 기기가 있어야 찍을 수 있는 화면을 실제 화면
 // 코드로 그려 낸다. 없는 기능을 보여 주지 않고, 화면을 그리는 코드도 앱과 같은 것이다(#115).
 //
-// 크기는 Play 가 받는 1080x2400 이다. 360dp x 800dp 에 dpi 480(밀도 3.0)을 곱하면 그 값이 된다.
+// 크기는 Play 가 받는 1080x1920 이다. 360dp x 640dp 에 dpi 480(밀도 3.0)을 곱하면 그 값이 된다.
 // 여기서 나온 PNG 를 docs/play/screenshots/ 에 옮겨 둔다. 다시 만들려면 이 파일의 미리보기를
 // 렌더한 뒤 같은 자리에 덮어쓴다.
 
-private const val STORE_DEVICE = "spec:width=360dp,height=800dp,dpi=480"
+private const val STORE_DEVICE = "spec:width=360dp,height=640dp,dpi=480"
 
 private fun storeTime(
     hour: Int,
@@ -60,6 +60,10 @@ private val fixedToday: Date =
             set(Calendar.MILLISECOND, 0)
         }.time
 
+// 1080x1920 은 9:16 이라 종전 9:20 보다 아래가 짧다. 맨 아래 「남은 일정」 한 줄이 화면 끝에
+// 걸치고 「일정 추가」 버튼이 그 줄 제목의 일부를 덮는다. 목록 길이를 줄여도 위쪽 높이가 고정이라
+// 접히는 자리는 그대로이고, 덮이는 줄이 「끝낸 일정」 으로 바뀌어 스토어 그림으로는 오히려
+// 나빠진다(실제로 렌더해 확인). 버튼이 목록 위에 겹치는 것은 앱의 실제 모습이므로 그대로 둔다.
 private val storeMainState =
     MainUiState(
         todaySchedules = storeSchedules,
diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/LargeTextScreenshotTestKt/ScheduleRowLargeTextScreenshot_\354\235\274\354\240\225 \354\244\204 \355\201\260 \352\270\200\354\236\220 320_8b0ca01c_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/LargeTextScreenshotTestKt/ScheduleRowLargeTextScreenshot_\354\235\274\354\240\225 \354\244\204 \355\201\260 \352\270\200\354\236\220 320_8b0ca01c_0.png"
index dd5c2a80..aa93a5e3 100644
Binary files "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/LargeTextScreenshotTestKt/ScheduleRowLargeTextScreenshot_\354\235\274\354\240\225 \354\244\204 \355\201\260 \352\270\200\354\236\220 320_8b0ca01c_0.png" and "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/LargeTextScreenshotTestKt/ScheduleRowLargeTextScreenshot_\354\235\274\354\240\225 \354\244\204 \355\201\260 \352\270\200\354\236\220 320_8b0ca01c_0.png" differ
diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/LargeTextScreenshotTestKt/ScheduleRowLargeTextScreenshot_\354\235\274\354\240\225 \354\244\204 \355\201\260 \352\270\200\354\236\220 360_e3a223a5_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/LargeTextScreenshotTestKt/ScheduleRowLargeTextScreenshot_\354\235\274\354\240\225 \354\244\204 \355\201\260 \352\270\200\354\236\220 360_e3a223a5_0.png"
index f2b65da5..abc600be 100644
Binary files "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/LargeTextScreenshotTestKt/ScheduleRowLargeTextScreenshot_\354\235\274\354\240\225 \354\244\204 \355\201\260 \352\270\200\354\236\220 360_e3a223a5_0.png" and "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/LargeTextScreenshotTestKt/ScheduleRowLargeTextScreenshot_\354\235\274\354\240\225 \354\244\204 \355\201\260 \352\270\200\354\236\220 360_e3a223a5_0.png" differ
diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/DoneContentScreenshot_\354\231\204\353\243\214 \355\231\224\353\251\264_994b70b5_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/DoneContentScreenshot_\354\231\204\353\243\214 \355\231\224\353\251\264_994b70b5_0.png"
index 8c6780a4..994b475d 100644
Binary files "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/DoneContentScreenshot_\354\231\204\353\243\214 \355\231\224\353\251\264_994b70b5_0.png" and "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/DoneContentScreenshot_\354\231\204\353\243\214 \355\231\224\353\251\264_994b70b5_0.png" differ
diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/MainContentDarkScreenshot_\353\251\224\354\235\270 \354\226\264\353\221\220\354\232\264 \353\252\250\353\223\234_6bd08bbe_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/MainContentDarkScreenshot_\353\251\224\354\235\270 \354\226\264\353\221\220\354\232\264 \353\252\250\353\223\234_6bd08bbe_0.png"
index 99ad2599..0ee92b50 100644
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diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/MainContentLoadedScreenshot_\353\251\224\354\235\270 \354\235\274\354\240\225 \354\236\210\354\235\214_cbe76a43_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/MainContentLoadedScreenshot_\353\251\224\354\235\270 \354\235\274\354\240\225 \354\236\210\354\235\214_cbe76a43_0.png"
index b6fb4e49..456b13e2 100644
Binary files "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/MainContentLoadedScreenshot_\353\251\224\354\235\270 \354\235\274\354\240\225 \354\236\210\354\235\214_cbe76a43_0.png" and "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/MainContentLoadedScreenshot_\353\251\224\354\235\270 \354\235\274\354\240\225 \354\236\210\354\235\214_cbe76a43_0.png" differ
diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/MainNotificationsDisabledScreenshot_\354\225\214\353\236\214 \354\225\214\353\246\274 \354\260\250\353\213\250 \354\225\210\353\202\264_f300fa05_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/MainNotificationsDisabledScreenshot_\354\225\214\353\236\214 \354\225\214\353\246\274 \354\260\250\353\213\250 \354\225\210\353\202\264_f300fa05_0.png"
index 8b1ccbb1..7c1f5d09 100644
Binary files "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/MainNotificationsDisabledScreenshot_\354\225\214\353\236\214 \354\225\214\353\246\274 \354\260\250\353\213\250 \354\225\210\353\202\264_f300fa05_0.png" and "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/MainScreenshotTestKt/MainNotificationsDisabledScreenshot_\354\225\214\353\236\214 \354\225\214\353\246\274 \354\260\250\353\213\250 \354\225\210\353\202\264_f300fa05_0.png" differ
diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreDarkScreenshot_\354\212\244\355\206\240\354\226\264 \354\226\264\353\221\220\354\232\264 \353\252\250\353\223\234_665a3c63_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreDarkScreenshot_\354\212\244\355\206\240\354\226\264 \354\226\264\353\221\220\354\232\264 \353\252\250\353\223\234_665a3c63_0.png"
new file mode 100644
index 00000000..347d8b3b
Binary files /dev/null and "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreDarkScreenshot_\354\212\244\355\206\240\354\226\264 \354\226\264\353\221\220\354\232\264 \353\252\250\353\223\234_665a3c63_0.png" differ
diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreDarkScreenshot_\354\212\244\355\206\240\354\226\264 \354\226\264\353\221\220\354\232\264 \353\252\250\353\223\234_dde69d6e_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreDarkScreenshot_\354\212\244\355\206\240\354\226\264 \354\226\264\353\221\220\354\232\264 \353\252\250\353\223\234_dde69d6e_0.png"
deleted file mode 100644
index 43acab74..00000000
Binary files "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreDarkScreenshot_\354\212\244\355\206\240\354\226\264 \354\226\264\353\221\220\354\232\264 \353\252\250\353\223\234_dde69d6e_0.png" and /dev/null differ
diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreDoneScreenshot_\354\212\244\355\206\240\354\226\264 \354\231\204\353\243\214_9c836483_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreDoneScreenshot_\354\212\244\355\206\240\354\226\264 \354\231\204\353\243\214_9c836483_0.png"
deleted file mode 100644
index d4d1711c..00000000
Binary files "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreDoneScreenshot_\354\212\244\355\206\240\354\226\264 \354\231\204\353\243\214_9c836483_0.png" and /dev/null differ
diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreDoneScreenshot_\354\212\244\355\206\240\354\226\264 \354\231\204\353\243\214_eef9ef9e_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreDoneScreenshot_\354\212\244\355\206\240\354\226\264 \354\231\204\353\243\214_eef9ef9e_0.png"
new file mode 100644
index 00000000..d5be3dc4
Binary files /dev/null and "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreDoneScreenshot_\354\212\244\355\206\240\354\226\264 \354\231\204\353\243\214_eef9ef9e_0.png" differ
diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreMainScreenshot_\354\212\244\355\206\240\354\226\264 \353\251\224\354\235\270_67c6756c_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreMainScreenshot_\354\212\244\355\206\240\354\226\264 \353\251\224\354\235\270_67c6756c_0.png"
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diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreMainScreenshot_\354\212\244\355\206\240\354\226\264 \353\251\224\354\235\270_768e228a_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreMainScreenshot_\354\212\244\355\206\240\354\226\264 \353\251\224\354\235\270_768e228a_0.png"
deleted file mode 100644
index 47fa6038..00000000
Binary files "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreMainScreenshot_\354\212\244\355\206\240\354\226\264 \353\251\224\354\235\270_768e228a_0.png" and /dev/null differ
diff --git "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreTimelineScreenshot_\354\212\244\355\206\240\354\226\264 \354\213\234\352\260\204\355\221\234_1683b525_0.png" "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreTimelineScreenshot_\354\212\244\355\206\240\354\226\264 \354\213\234\352\260\204\355\221\234_d0dba646_0.png"
similarity index 92%
rename from "feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreTimelineScreenshot_\354\212\244\355\206\240\354\226\264 \354\213\234\352\260\204\355\221\234_1683b525_0.png"
rename to "feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreTimelineScreenshot_\354\212\244\355\206\240\354\226\264 \354\213\234\352\260\204\355\221\234_d0dba646_0.png"
index f07f8d0d..1e41467d 100644
Binary files "a/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreTimelineScreenshot_\354\212\244\355\206\240\354\226\264 \354\213\234\352\260\204\355\221\234_1683b525_0.png" and "b/feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt/StoreTimelineScreenshot_\354\212\244\355\206\240\354\226\264 \354\213\234\352\260\204\355\221\234_d0dba646_0.png" differ
diff --git a/feature/profile/src/main/java/com/example/slowclock/ui/profile/ProfileScreen.kt b/feature/profile/src/main/java/com/example/slowclock/ui/profile/ProfileScreen.kt
index 84128856..cdb69580 100644
--- a/feature/profile/src/main/java/com/example/slowclock/ui/profile/ProfileScreen.kt
+++ b/feature/profile/src/main/java/com/example/slowclock/ui/profile/ProfileScreen.kt
@@ -16,7 +16,6 @@ import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.filled.Person
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Button
-import androidx.compose.material3.ButtonDefaults
 import androidx.compose.material3.CenterAlignedTopAppBar
 import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.ExperimentalMaterial3Api
@@ -248,16 +247,11 @@ private fun ProfileBody(
         Button(
             onClick = { onIntent(ProfileIntent.SignOut) },
             enabled = !state.isDeleting,
-            colors =
-                ButtonDefaults.buttonColors(
-                    containerColor = MaterialTheme.colorScheme.error,
-                ),
             // 높이를 고정하면 글자 배율을 올렸을 때 글자가 위아래로 잘린다(#107 과 같은 함정).
             modifier = Modifier.widthIn(min = 200.dp).heightIn(min = 64.dp),
         ) {
             Text(
                 text = "로그아웃",
-                color = MaterialTheme.colorScheme.onError,
                 style = MaterialTheme.typography.bodyLarge,
             )
         }
diff --git a/feature/recommendation/src/main/java/com/example/slowclock/ui/recommendation/components/RecommendationList.kt b/feature/recommendation/src/main/java/com/example/slowclock/ui/recommendation/components/RecommendationList.kt
index 5c891d3d..c043cf32 100644
--- a/feature/recommendation/src/main/java/com/example/slowclock/ui/recommendation/components/RecommendationList.kt
+++ b/feature/recommendation/src/main/java/com/example/slowclock/ui/recommendation/components/RecommendationList.kt
@@ -17,8 +17,10 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import com.example.slowclock.data.model.Recommendation
+import com.example.slowclock.feature.recommendation.R
 
 /**
  * 추천 일정 목록.
@@ -37,6 +39,13 @@ fun RecommendationList(
         contentPadding = PaddingValues(top = 8.dp, bottom = 32.dp),
         verticalArrangement = Arrangement.spacedBy(12.dp),
     ) {
+        item(key = "health_notice") {
+            Text(
+                text = stringResource(R.string.recommendation_health_notice),
+                style = MaterialTheme.typography.bodyMedium,
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+            )
+        }
         items(recommendations, key = { it.title }) { item ->
             RecommendationRow(
                 title = item.title,
diff --git a/feature/recommendation/src/main/res/values/navigation_strings.xml b/feature/recommendation/src/main/res/values/navigation_strings.xml
index 81c474a7..b86102c4 100644
--- a/feature/recommendation/src/main/res/values/navigation_strings.xml
+++ b/feature/recommendation/src/main/res/values/navigation_strings.xml
@@ -1,3 +1,4 @@
 <resources>
     <string name="recommendation_back_without_selection">고르지 않고 돌아가기</string>
+    <string name="recommendation_health_notice">일상 일정 예시이며 의료 진단이나 치료를 위한 안내가 아닙니다. 건강에 관한 판단은 의료 전문가와 상담해 주세요.</string>
 </resources>
diff --git a/scripts/export-play-screenshots.sh b/scripts/export-play-screenshots.sh
new file mode 100755
index 00000000..4e873c8b
--- /dev/null
+++ b/scripts/export-play-screenshots.sh
@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+# Export opaque CI-rendered screenshots as Play's 24-bit PNG without changing any RGB pixel.
+set -euo pipefail
+cd "$(dirname "$0")/.."
+if [[ "${1:-}" != "" && "${1:-}" != "--check" ]]; then
+  echo 'Usage: scripts/export-play-screenshots.sh [--check]' >&2
+  exit 2
+fi
+export PLAY_SCREENSHOT_CHECK="${1:-}"
+jshell -J-Djava.awt.headless=true --execution local --feedback silent - <<'JAVA'
+import java.awt.image.BufferedImage;
+import java.nio.file.*;
+import java.util.*;
+import javax.imageio.ImageIO;
+try {
+    var sourceRoot = Path.of("feature/main/src/screenshotTestDebug/reference/com/example/slowclock/ui/StoreScreenshotTestKt");
+    var names = Map.of("StoreMainScreenshot_", "01-main.png", "StoreDoneScreenshot_", "02-done.png", "StoreTimelineScreenshot_", "03-timeline.png", "StoreDarkScreenshot_", "04-dark.png");
+    if (!Files.isDirectory(sourceRoot)) throw new IllegalStateException("No CI baseline yet. Put the screenshot-baseline label on the PR and pull the commit CI makes, then run this again: " + sourceRoot);
+    for (var entry : names.entrySet()) {
+        List<Path> candidates;
+        try (var paths = Files.list(sourceRoot)) {
+            candidates = paths.filter(p -> p.getFileName().toString().startsWith(entry.getKey())).toList();
+        }
+        if (candidates.size() != 1) throw new IllegalStateException("Expected one current CI baseline for " + entry.getKey());
+        var source = ImageIO.read(candidates.get(0).toFile());
+        if (source.getWidth() != 1080 || source.getHeight() != 1920) throw new IllegalStateException("Expected 1080x1920 CI baseline: " + candidates.get(0));
+        var pixels = source.getRGB(0, 0, 1080, 1920, null, 0, 1080);
+        if (Arrays.stream(pixels).anyMatch(p -> (p >>> 24) != 255)) throw new IllegalStateException("Transparent source pixel: " + candidates.get(0));
+        var target = Path.of("docs/play/screenshots", entry.getValue());
+        if (!"--check".equals(System.getenv("PLAY_SCREENSHOT_CHECK"))) {
+            var rgb = new BufferedImage(1080, 1920, BufferedImage.TYPE_INT_RGB);
+            rgb.setRGB(0, 0, 1080, 1920, pixels, 0, 1080);
+            if (!ImageIO.write(rgb, "png", target.toFile())) throw new IllegalStateException("PNG writer unavailable");
+        }
+        var exported = ImageIO.read(target.toFile());
+        if (exported.getWidth() != 1080 || exported.getHeight() != 1920 || exported.getColorModel().hasAlpha() || exported.getColorModel().getPixelSize() != 24) throw new IllegalStateException("Invalid 24-bit Play export: " + target);
+        if (!Arrays.equals(pixels, exported.getRGB(0, 0, 1080, 1920, null, 0, 1080))) throw new IllegalStateException("RGB pixels differ from CI baseline: " + target);
+        System.out.println(target + ": 1080x1920, opaque RGB24, all RGB pixels identical to CI baseline");
+    }
+} catch (Exception error) {
+    error.printStackTrace();
+    System.exit(1);
+}
+System.exit(0);
+JAVA