fix(notify): accept canonical shared config schema

[TimeToBuildBob]

Summary

• accept the canonical object/snake_case aw-notify setting written by fix(settings): unify aw-notify config schema aw-webui#924
• map canonical category: "All" to Android's aggregate category and nullable labels to useful defaults
• preserve the briefly shipped legacy array/camelCase format from feat(notify): read alert config from server settings, fall back to defaults #202
• preserve an explicit empty canonical alerts list so users can disable alerts
• reject invalid thresholds and fall back only when a non-empty setting has no valid alerts

This closes the Android parser slice of #201. Desktop consumption remains in ActivityWatch/aw-notify-rs#39.

Test plan

• reproduced canonical object input falling back to defaults before the change
• JAVA_HOME=/opt/android-studio/jbr ANDROID_HOME=/home/bob/Android/Sdk ./gradlew :mobile:testDebugUnitTest --no-daemon --console=plain
• canonical, aggregate-All, empty, malformed, invalid-threshold, and legacy inputs covered by unit tests

[greptile-apps]

Greptile Summary

The PR extends Android’s notification-setting parser to consume the canonical object and snake_case schema while retaining legacy array compatibility.

• Maps canonical All alerts to aggregate activity.
• Supplies useful defaults for nullable or empty labels.
• Validates positive integral thresholds and skips malformed alert objects.
• Preserves an explicitly empty canonical alert list.
• Adds unit coverage for canonical, legacy, empty, malformed, and invalid-threshold inputs.

Confidence Score: 5/5

The PR appears safe to merge with no actionable correctness or security issues identified.

The canonical parser matches the documented setting shape, preserves intentional empty and fallback behavior, and retains compatibility with the legacy representation.

Important Files Changed

Filename	Overview
mobile/src/main/java/net/activitywatch/android/workers/NotifyWorker.kt	Adds canonical alert configuration parsing, validation, fallback behavior, and legacy compatibility without an established actionable defect.
mobile/src/test/java/net/activitywatch/android/workers/NotifyWorkerTest.kt	Adds focused tests covering the new schema, aggregate mapping, empty configuration, malformed entries, threshold validation, and legacy parsing.

_{Reviews (1): Last reviewed commit: "fix(notify): accept canonical shared con..." | Re-trigger Greptile}

[TimeToBuildBob]

CI-green and mergeable (Greptile 5/5) — waiting only on a maintainer click.

This PR is ready to merge, but the bot has pull-only access to this repo and can't self-merge. Project monitoring marked it human_merge_required and will not spend retry sessions attempting an automated merge. A new head will be evaluated independently.

Automated merge handoff for 787c36323cb1:

• CI gate: satisfied
• Review threads: clear
• Self-merge policy: human review required for these path/category-policy blockers:
• mobile/src/main/java/net/activitywatch/android/workers/NotifyWorker.kt
• mobile/src/test/java/net/activitywatch/android/workers/NotifyWorkerTest.kt