🧪 Implement Automated Testing for Installation Scripts

## Description
Add automated tests to ensure installation scripts work correctly across different Android versions and Termux configurations.

## Tasks
- [ ] Set up testing framework (bats or similar)
- [ ] Write unit tests for core functions
- [ ] Create integration tests for full installation flow
- [ ] Add CI/CD pipeline using GitHub Actions
- [ ] Document testing procedures

## Expected Outcome
- Automated tests run on every commit
- Reduced bugs in production
- Confidence in script reliability

## Skills Required
- Bash scripting
- Testing frameworks
- GitHub Actions
- CI/CD concepts

## Difficulty Level
🔴 Advanced

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*Hacktoberfest 2025 - Advanced contribution*