feat(scene): complete automation runtime (#11)

## Summary

- persist scenes and trigger state in Room with a database migration and one-time default seeding
- execute enabled automatic scenes from real device readings with edge-triggered thresholds, conditions, hysteresis, and time occurrence deduplication
- schedule foreground polling and WorkManager background evaluation, including reconciliation after scene changes
- allow automatic commands to be run manually for testing while bypassing triggers and conditions
- send real system notifications with runtime permission handling and accurate failure reporting
- move Other Options & Appearance to the bottom of the command editor

## Verification

- ./gradlew.bat :android:app:assembleDebug --no-daemon
- installed and exercised on mulator-5554
- verified manual automatic-command execution and Activity records
- verified notification permission flow, posted notification, and successful Activity records

Automated tests were not run per the requested iteration workflow.

Reviewed-on: #11
Co-authored-by: KremeCN <3265494849@qq.com>

android/feature/automation/build.gradle.kts

@@ -39,6 +39,9 @@ dependencies {
     implementation(libs.hilt.android)
     kapt(libs.hilt.compiler)
     implementation(libs.androidx.work.runtime.ktx)
+    implementation(libs.androidx.hilt.work)
+    kapt(libs.androidx.hilt.compiler)
+    implementation(libs.androidx.lifecycle.process)
     implementation(platform(libs.compose.bom))
     implementation(libs.compose.ui)
     implementation(libs.compose.material3)