e-SUN Android App

Native Kotlin + Jetpack Compose app (API 35) that provides a light-therapy style full-screen white display based on Kelvin presets.

First Increment Scope

3 editable temperature presets (default 3000K / 4500K / 6000K)
3 editable timer presets (default 5 / 10 / 30 min)
Kelvin-to-RGB approximation for screen color
Full-screen Shine mode with:
- Keep-screen-on
- Temporary in-app brightness override
- Controls shown on touch and auto-hidden after 5s
- Timer end returns to main screen
Brightness persistence (default 50% on first launch)
Placeholder ad section (AD HERE)
Unit test coverage for Kelvin conversion output range

The project intentionally runs Gradle with daemon disabled (--no-daemon and org.gradle.daemon=false).

./BuildTool.sh --setup-only
./BuildTool.sh --debug
./BuildTool.sh --release
./BuildTool.sh --all

--setup-only: prepares wrapper/dependencies without building release artifacts.
--debug: increments version code/name, builds debug APK, renames output to include app name and version code.
--release: increments version code/name, builds release AAB, renames output similarly.
--all: runs debug + release flow in one run.
After successful build tasks, script commits all changes with message from commit-message.txt (fallback: No Details) and then clears that file.

For this first increment, release uses default debug signing unless custom signing is added. Recommended future setup:

Generate upload key:

keytool -genkeypair -v -keystore upload-keystore.jks -alias upload -keyalg RSA -keysize 2048 -validity 10000

App logs key interactions and state updates through tags:

This keeps debugging actionable without excessive noise.