[jawzf]

Description

Adds a Device care action to DIY automations, under System actions next to Send notification. It cleans up the device in one step and needs Shizuku or root.

Before: there was no way to clear app caches or close background apps without picking a list of apps (App Freezing).

After: add Device care to any automation (for example, Screen on or Charging), with two switches in its settings:

• Clear app caches: deletes every app's cache files (pm trim-caches). Apps rebuild them as needed.
• Close background apps: closes the background processes of idle user-installed apps (am kill). It skips Essentials, the default launcher, the current keyboard, Shizuku, and apps FreezeManager.isAppActive sees as in use (foreground, playing media, ongoing notification). am kill never touches foreground apps or foreground services, and unlike force-stop it leaves the app's alarms, jobs and notifications alone. System apps aren't touched.

When it finishes, a toast shows the space freed, e.g. "Device care: 23 MB freed". Save is disabled with both switches off. With only one switch on, the action row shows "Device care · Clear app caches" or "Device care · Close background apps".

How: Action.DeviceCare is a configurable action like SendNotification, saved through the existing ActionGsonAdapter. DeviceCare.run runs both steps through ShellUtils off the main thread, sending all the kills as one shell command. The action declares SHIZUKU/ROOT, so the editor shows the existing permission sheet when access is missing, and executeAll reports it at run time.

Type of change

• Bug fix
• New feature
• UI / visual update
• Performance improvement
• Refactoring / cleanup
• Translations
• Build / CI tooling

UI changes

The Device care settings sheet.

The toast after a run.

Checklist

• The base branch is set to develop (not main).
• The app builds cleanly locally with ./gradlew assembleDebug (and assembleRelease).
• Unit tests pass with ./gradlew testDebugUnitTest (2 new tests in ActionListJsonTest: round trip, and a bare {"type":"DeviceCare"} loads with both options on).
• Tested on the Android 17 emulator with Shizuku: listed under System; permission sheet without Shizuku; Save disabled with both off; row titles for each combination; saved options reopen; a run deleted a 40 MB cache file, then closed an idle app while keeping Essentials, Shizuku, the launcher and the keyboard; the action survives a force-stop.
• Tested on a Pixel 11 Pro (Android 17) with Shizuku: the first run freed about 9 GB of caches in about 35 s and closed 60 of 78 running user apps; apps with foreground services and the launcher kept running. With Spotify playing, a second run left it playing and showed the toast.
• Reuses EssentialsBottomSheet, RoundedCardContainer, IconToggleItem, the existing permission sheet and FreezeManager.isAppActive.
• New strings are in strings.xml (English only); icons are rounded_* drawables.
• No new settings, so nothing to register in FeatureRegistry.kt.
• No new dependencies or permissions in the manifest. Release APK +8 KB.

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