build(uhr): alarms, ringing, timer, stopwatch, world clock, bedtime, settings, widgets

- exact alarms via setAlarmClock, rescheduled on boot/time/zone change and app update
- foreground ringing service: alarm-stream audio with gradual volume, vibration,
  full-screen screen with slide to snooze/stop, silence-after, missed notification
- timers and stopwatch keep timestamps only; live countdown/chronometer notifications
- world clock offline from the time zone database (no network permission at all)
- own alarm tone, own analog face and launcher icon
- next-ring logic unit-tested incl. DST gaps and zone changes; screenshot tests

Co-Authored-By: Claude Opus 5.5 <[email protected]>

uhr/app/src/main/res/drawable/analog_dial.xml

@@ -0,0 +1,6 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="200dp" android:height="200dp" android:viewportWidth="200" android:viewportHeight="200">
+    <path android:fillColor="#40FFFFFF" android:pathData="M100,14m-5,0a5,5 0 1,0 10,0a5,5 0 1,0 -10,0"/>
+    <path android:fillColor="#40FFFFFF" android:pathData="M186,100m-5,0a5,5 0 1,0 10,0a5,5 0 1,0 -10,0"/>
+    <path android:fillColor="#40FFFFFF" android:pathData="M100,186m-5,0a5,5 0 1,0 10,0a5,5 0 1,0 -10,0"/>
+    <path android:fillColor="#40FFFFFF" android:pathData="M14,100m-5,0a5,5 0 1,0 10,0a5,5 0 1,0 -10,0"/>
+</vector>

uhr/app/src/main/res/drawable/analog_hour.xml

@@ -0,0 +1,3 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="200dp" android:height="200dp" android:viewportWidth="200" android:viewportHeight="200">
+    <path android:strokeColor="#FFA8C7FA" android:strokeWidth="14" android:strokeLineCap="round" android:pathData="M100,100 L100,52"/>
+</vector>

uhr/app/src/main/res/drawable/analog_minute.xml

@@ -0,0 +1,4 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="200dp" android:height="200dp" android:viewportWidth="200" android:viewportHeight="200">
+    <path android:strokeColor="#FFFFFFFF" android:strokeWidth="8" android:strokeLineCap="round" android:pathData="M100,100 L100,30"/>
+    <path android:fillColor="#FFFFFFFF" android:pathData="M100,100m-9,0a9,9 0 1,0 18,0a9,9 0 1,0 -18,0"/>
+</vector>

uhr/app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="108dp" android:height="108dp" android:viewportWidth="108" android:viewportHeight="108"><path android:fillColor="#FF2F5EA8" android:pathData="M0,0h108v108h-108z"/></vector>

uhr/app/src/main/res/drawable/ic_launcher_foreground.xml

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+</vector>

uhr/app/src/main/res/drawable/ic_launcher_monochrome.xml

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+</vector>

uhr/app/src/main/res/drawable/ic_stat_alarm.xml

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uhr/app/src/main/res/drawable/ic_stat_bedtime.xml

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uhr/app/src/main/res/drawable/ic_stat_timer.xml

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uhr/app/src/main/res/layout/widget_analog.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AnalogClock xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent" android:layout_height="match_parent" android:padding="8dp"
+    android:dial="@drawable/analog_dial" android:hand_hour="@drawable/analog_hour" android:hand_minute="@drawable/analog_minute" />

uhr/app/src/main/res/layout/widget_digital.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:gravity="center">
+    <TextClock android:id="@+id/w_time" android:layout_width="wrap_content" android:layout_height="wrap_content"
+        android:format24Hour="HH:mm" android:format12Hour="h:mm" android:fontFamily="sans-serif-light"
+        android:textSize="80sp" android:includeFontPadding="false" android:textColor="#FFFFFFFF" android:shadowColor="#66000000" android:shadowRadius="8" android:shadowDy="2" />
+    <TextClock android:layout_width="wrap_content" android:layout_height="wrap_content"
+        android:format24Hour="EEEE, d. MMMM" android:format12Hour="EEEE, MMMM d" android:fontFamily="sans-serif-medium"
+        android:textSize="16sp" android:textColor="#FFFFFFFF" android:shadowColor="#66000000" android:shadowRadius="8" android:shadowDy="2" />
+    <TextView android:id="@+id/w_next" android:layout_width="wrap_content" android:layout_height="wrap_content"
+        android:layout_marginTop="2dp" android:textSize="14sp" android:textColor="#E6FFFFFF" android:shadowColor="#66000000" android:shadowRadius="8" android:shadowDy="2" />
+</LinearLayout>

uhr/app/src/main/res/layout/widget_next.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal"
+    android:gravity="center" android:paddingHorizontal="20dp">
+    <ImageView android:id="@+id/w_next_icon" android:layout_width="24dp" android:layout_height="24dp" android:src="@drawable/ic_stat_alarm" android:importantForAccessibility="no" />
+    <TextView android:id="@+id/w_next_text" android:layout_width="wrap_content" android:layout_height="wrap_content"
+        android:layout_marginStart="10dp" android:fontFamily="sans-serif-medium" android:textSize="16sp" android:maxLines="1" android:ellipsize="end" />
+</LinearLayout>

uhr/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+    <monochrome android:drawable="@drawable/ic_launcher_monochrome"/>
+</adaptive-icon>

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

@@ -0,0 +1,130 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="tab_alarm">Wecker</string>
+    <string name="tab_clock">Uhr</string>
+    <string name="tab_timer">Timer</string>
+    <string name="tab_stopwatch">Stoppuhr</string>
+    <string name="tab_bedtime">Schlafen</string>
+    <string name="more">Weitere Optionen</string>
+    <string name="settings">Einstellungen</string>
+    <string name="back">Zurück</string>
+    <string name="add">Hinzufügen</string>
+    <string name="delete">Löschen</string>
+    <string name="undo">Rückgängig</string>
+    <string name="on">An</string>
+    <string name="off">Aus</string>
+    <string name="never">Nie</string>
+    <string name="later">Später</string>
+    <string name="open_settings">Einstellungen öffnen</string>
+
+    <string name="alarm">Wecker</string>
+    <string name="alarms">Wecker</string>
+    <string name="no_alarms">Noch keine Wecker. Tippe auf +, um einen zu stellen.</string>
+    <string name="wake_up">Aufwachen</string>
+    <string name="other_alarms">Weitere</string>
+    <string name="alarm_deleted">Wecker gelöscht</string>
+    <string name="alarm_set_in">Klingelt %1$s</string>
+    <string name="in_days_hours">in %1$d T. %2$d Std.</string>
+    <string name="in_hours_minutes">in %1$d Std. %2$d Min.</string>
+    <string name="in_minutes">in %1$d Min.</string>
+    <string name="today">Heute</string>
+    <string name="tomorrow">Morgen</string>
+    <string name="yesterday">Gestern</string>
+    <string name="every_day">Jeden Tag</string>
+    <string name="weekdays">Werktags</string>
+    <string name="weekends">Am Wochenende</string>
+    <string name="not_scheduled">Nicht geplant</string>
+    <string name="snoozed_until">Schlummert bis %1$s</string>
+    <string name="paused_until">Pausiert · nächstes Mal %1$s</string>
+    <string name="paused_until_date">Pausiert bis %1$s</string>
+    <string name="pause_alarm">Wecker pausieren</string>
+    <string name="pause_until">Pausieren bis einschließlich</string>
+    <string name="resume">Nicht pausieren</string>
+    <string name="skip_next">Nächsten Weckruf überspringen</string>
+    <string name="add_label">Name hinzufügen</string>
+    <string name="vibrate">Vibration</string>
+    <string name="alarm_sound">Weckton</string>
+    <string name="sound_default">Standard (Morgenklang)</string>
+    <string name="sound_silent">Ohne Ton</string>
+    <string name="add_own_sound">+ Eigene Audiodatei wählen</string>
+    <string name="pick_time">Uhrzeit wählen</string>
+    <string name="use_dial">Zifferblatt</string>
+    <string name="use_keyboard">Tastatur</string>
+
+    <string name="snooze">Schlummern</string>
+    <string name="stop">Stopp</string>
+    <string name="dismiss_now">Jetzt beenden</string>
+
+    <string name="clock">Uhr</string>
+    <string name="add_city">Stadt hinzufügen</string>
+    <string name="search_city">Stadt oder Zeitzone</string>
+    <string name="same_time">Gleiche Zeit</string>
+    <string name="hours_offset">%1$s Std.</string>
+
+    <string name="timer">Timer</string>
+    <string name="timer_of">Timer · %1$s</string>
+    <string name="timer_done">Timer abgelaufen</string>
+    <string name="plus_minute">+1:00</string>
+    <string name="pause">Pause</string>
+    <string name="paused">Pausiert</string>
+    <string name="start">Start</string>
+    <string name="reset">Zurücksetzen</string>
+    <string name="backspace">Löschen</string>
+    <string name="n_timers">%1$d Timer</string>
+
+    <string name="stopwatch">Stoppuhr</string>
+    <string name="lap">Runde</string>
+    <string name="lap_n">Runde %1$d</string>
+
+    <string name="bedtime">Schlafenszeit</string>
+    <string name="bedtime_intro_title">Ein fester Schlafrhythmus</string>
+    <string name="bedtime_intro">Lege fest, wann du schlafen gehst und aufstehst. Du wirst rechtzeitig erinnert, und der Wecker zum Aufwachen wird automatisch gestellt.</string>
+    <string name="get_started">Los geht\'s</string>
+    <string name="sleep_duration">%1$d Std. %2$d Min. Schlaf</string>
+    <string name="bedtime_schedule">Zeitplan aktiv</string>
+    <string name="bedtime_reminder">Erinnerung</string>
+    <string name="at_bedtime">Zur Schlafenszeit</string>
+    <string name="minutes_before">%1$d Min. vorher</string>
+
+    <string name="silence_after">Automatisch stumm nach</string>
+    <string name="snooze_length">Schlummerdauer</string>
+    <string name="alarm_volume">Lautstärke</string>
+    <string name="gradual_volume">Langsam lauter werden</string>
+    <string name="volume_buttons">Lautstärketasten beim Klingeln</string>
+    <string name="vb_volume">Lautstärke ändern</string>
+    <string name="vb_nothing">Nichts tun</string>
+    <string name="week_start">Woche beginnt am</string>
+    <string name="timer_vibrate">Timer vibriert</string>
+    <string name="style">Darstellung</string>
+    <string name="digital">Digital</string>
+    <string name="analog">Analog</string>
+    <string name="show_seconds">Sekunden anzeigen</string>
+    <string name="theme">Design</string>
+    <string name="theme_system">System</string>
+    <string name="theme_light">Hell</string>
+    <string name="theme_dark">Dunkel</string>
+    <string name="n_minutes">%1$d Minuten</string>
+    <string name="n_seconds">%1$d Sekunden</string>
+
+    <string name="ch_ringing">Klingeln</string>
+    <string name="ch_upcoming">Anstehende Wecker</string>
+    <string name="ch_missed">Verpasste Wecker</string>
+    <string name="ch_running">Laufende Timer und Stoppuhr</string>
+    <string name="ch_bedtime">Schlafenszeit</string>
+    <string name="notif_upcoming">Wecker um %1$s</string>
+    <string name="notif_snoozed">Schlummert bis %1$s</string>
+    <string name="notif_missed">Wecker verpasst</string>
+    <string name="notif_bedtime">Bald ist Schlafenszeit</string>
+    <string name="notif_bedtime_text">Leg das Handy weg und komm zur Ruhe.</string>
+
+    <string name="fsi_title">Wecker im Vollbild</string>
+    <string name="fsi_text">Damit der Wecker auch über dem Sperrbildschirm erscheint, braucht die App die Erlaubnis für Vollbild-Benachrichtigungen. Ohne sie klingelt er trotzdem, aber nur als Benachrichtigung.</string>
+
+    <string name="no_alarm_set">Kein Wecker gestellt</string>
+    <string name="widget_digital_name">Uhrzeit</string>
+    <string name="widget_digital_desc">Große Uhrzeit, Datum und nächster Wecker</string>
+    <string name="widget_analog_name">Analoge Uhr</string>
+    <string name="widget_analog_desc">Zifferblatt in deinen Farben</string>
+    <string name="widget_next_name">Nächster Wecker</string>
+    <string name="widget_next_desc">Wann der nächste Wecker klingelt</string>
+</resources>

uhr/app/src/main/res/xml/widget_analog.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:description="@string/widget_analog_desc"
+    android:initialLayout="@layout/glance_default_loading_layout"
+    android:minWidth="110dp" android:minHeight="110dp" android:targetCellWidth="2" android:targetCellHeight="2"
+    android:minResizeWidth="80dp" android:minResizeHeight="40dp"
+    android:resizeMode="horizontal|vertical" android:updatePeriodMillis="0"
+    android:widgetCategory="home_screen|keyguard" />

uhr/app/src/main/res/xml/widget_digital.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:description="@string/widget_digital_desc"
+    android:initialLayout="@layout/glance_default_loading_layout"
+    android:minWidth="250dp" android:minHeight="110dp" android:targetCellWidth="4" android:targetCellHeight="2"
+    android:minResizeWidth="80dp" android:minResizeHeight="40dp"
+    android:resizeMode="horizontal|vertical" android:updatePeriodMillis="0"
+    android:widgetCategory="home_screen|keyguard" />

uhr/app/src/main/res/xml/widget_next.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:description="@string/widget_next_desc"
+    android:initialLayout="@layout/glance_default_loading_layout"
+    android:minWidth="180dp" android:minHeight="48dp" android:targetCellWidth="3" android:targetCellHeight="1"
+    android:minResizeWidth="80dp" android:minResizeHeight="40dp"
+    android:resizeMode="horizontal|vertical" android:updatePeriodMillis="0"
+    android:widgetCategory="home_screen|keyguard" />