calendula/app/src/main/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.READ_CALENDAR" />
    <uses-permission android:name="android.permission.WRITE_CALENDAR" />
    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
    <!--
      Lets the "Reliable delivery" setting open the direct system dialog to
      exempt Calendula from battery optimisation (so reminder broadcasts aren't
      delayed by Doze). Used only to launch that dialog; falls back to the
      battery-optimisation list if the OS declines the direct intent.
    -->
    <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />

    <!-- Package visibility (Android 11+): without this, getLaunchIntentForPackage
         returns null and the calendar manager's per-account "manage" button can't
         open the source sync app (DAVx5, ICSx5, Google Calendar, …). The LAUNCHER
         intent makes launchable apps visible so we can launch whichever app owns a
         calendar account's authenticator. -->
    <queries>
        <intent>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent>
    </queries>

    <application
        android:name=".CalendulaApp"
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:localeConfig="@xml/locales_config"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.Calendula"
        tools:targetApi="35">
        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:launchMode="singleTop"
            android:windowSoftInputMode="adjustResize">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>

            <!-- Open a .ics file (file manager / email attachment / browser). -->
            <intent-filter>
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
                <data android:scheme="content" android:mimeType="text/calendar" />
                <data android:scheme="file" android:mimeType="text/calendar" />
            </intent-filter>
            <!-- Receive a .ics shared from another app. -->
            <intent-filter>
                <action android:name="android.intent.action.SEND" />
                <category android:name="android.intent.category.DEFAULT" />
                <data android:mimeType="text/calendar" />
            </intent-filter>

            <!-- Launcher long-press shortcuts (e.g. "New event"). -->
            <meta-data
                android:name="android.app.shortcuts"
                android:resource="@xml/shortcuts" />
        </activity>

        <!-- The provider broadcasts EVENT_REMINDER at reminder time but posts
             no notification itself — a calendar app must (v1.4, Etar model).
             Exported: the broadcast arrives from the provider's process. -->
        <receiver
            android:name=".data.reminders.EventReminderReceiver"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.EVENT_REMINDER" />
                <data
                    android:host="com.android.calendar"
                    android:scheme="content" />
            </intent-filter>
        </receiver>

        <!-- Home-screen widgets (Glance). Exported: the launcher/host binds them. -->
        <receiver
            android:name=".widget.agenda.AgendaWidgetReceiver"
            android:label="@string/widget_agenda_label"
            android:exported="true">
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
            </intent-filter>
            <meta-data
                android:name="android.appwidget.provider"
                android:resource="@xml/appwidget_info_agenda" />
        </receiver>

        <receiver
            android:name=".widget.month.MonthWidgetReceiver"
            android:label="@string/widget_month_label"
            android:exported="true">
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
            </intent-filter>
            <meta-data
                android:name="android.appwidget.provider"
                android:resource="@xml/appwidget_info_month" />
        </receiver>

        <!-- Keeps both widgets fresh: the calendar provider broadcasts
             PROVIDER_CHANGED on any data change (our writes and external sync),
             and the system broadcasts the date/time ones at midnight / clock
             changes so "today" highlighting rolls over. -->
        <receiver
            android:name=".widget.WidgetUpdateReceiver"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.PROVIDER_CHANGED" />
                <data
                    android:host="com.android.calendar"
                    android:scheme="content" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.DATE_CHANGED" />
                <action android:name="android.intent.action.TIME_SET" />
                <action android:name="android.intent.action.TIMEZONE_CHANGED" />
            </intent-filter>
        </receiver>

        <!-- Hands .ics files we stage in the cache to other apps via a content
             Uri (single-event share). Authority tracks applicationId so the
             debug suffix doesn't break getUriForFile. -->
        <provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="${applicationId}.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_paths" />
        </provider>

        <!-- Persists the per-app language (M4) on API < 33, where the platform
             per-app-languages API is unavailable. On 33+ this is a no-op. -->
        <service
            android:name="androidx.appcompat.app.AppLocalesMetadataHolderService"
            android:enabled="false"
            android:exported="false">
            <meta-data
                android:name="autoStoreLocales"
                android:value="true" />
        </service>
    </application>

</manifest>