Setup: Complete Gradle build configuration

[michael-newsrx]

Overview

Add Gradle Wrapper files to the repository and complete Gradle build setup.

Current State

• Gradle Wrapper files are present but untracked:
  • gradle/wrapper/gradle-wrapper.jar
  • gradle/wrapper/gradle-wrapper.properties
  • gradlew (Unix executable)
  • gradlew.bat (Windows batch script)

Tasks

• Add Gradle Wrapper files to version control
• Verify build.gradle configuration is complete
• Test build using gradlew
• Update .gitignore if needed
• Document build requirements in README.md

Acceptance Criteria

• Gradle Wrapper is committed and tracked
• Build can be run using ./gradlew command
• Build documentation is complete

[michael-newsrx]

Implementation completed via PR #9

[michael-conrad]

Superseded by #12 (Testing Pipeline spec) and #14 (Overview). Closing this issue is recommended — the testing pipeline spec absorbs the test coverage work defined here into Phase 0.