Project Description: I am looking for an expert Android/WearOS developer for a fixed-price, one-time project. I need a custom background service for my Samsung Galaxy Watch Ultra to act as a personal "black box" for auditing my own work environment (health and safety logging). Core Requirements: Persistent Foreground Service: Must stay active for 8+ hours (handling Doze mode and battery optimizations) to log data from GPS (L1+L5), Accelerometer, and Microphone (dB levels only, NO audio recording). Security & Integrity: Real-time AES-256 encryption for the logs and SHA-256 hashing for data integrity. Automated Silent Sync: The app must automatically and silently send the encrypted report file (.bin) to a specific email address whenever Wi-Fi or LTE is available. No UI popups or interaction required. Device Management: Implementation of Device Owner / Kiosk Mode (DPM) to ensure the service remains active during the entire work shift. Deliverables: Full Kotlin source code. Signed APK for ADB installation. Simple guide for installation via ADB. Required Skills: Android Native (Kotlin), WearOS SDK, Background Services (WakeLocks), Cryptography (AES/SHA).