Restructured linux to match Windows

CHANGELOG.md

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+# Changelog
+
+All notable changes to FTC Project Generator will be documented in this file.
+
+## [1.0.0-beta] - 2026-01-24
+
+### Added
+- **Template-based file generation**: Files stored as templates in `linux/templates/` and `windows/templates/` directories
+- **Project upgrade capability**: `--upgrade` flag to update existing projects while preserving user code
+- **Version tracking**: Projects track generator version in `.ftc-generator-version` file
+- **Comprehensive test suite**: 
+  - Unit tests for template processing and library functions
+  - System tests for end-to-end project creation and building
+  - Regression tests to ensure generated projects build and pass tests
+- **Improved project structure**: Cleaner organization with shared library functions
+- **Cross-platform support**: Separate but parallel Linux and Windows implementations
+- **Better error handling**: Improved validation and error messages
+- **Duplicate detection**: Warns when project exists and suggests upgrade option
+
+### Changed
+- **Reorganized file structure**: Templates separated from generation logic
+- **Simplified deployment script**: More concise and maintainable
+- **Better documentation**: Enhanced README with upgrade instructions
+- **Version management**: Centralized version in VERSION file
+
+### Technical Details
+- Templates support placeholders: `{{PROJECT_NAME}}`, `{{SDK_DIR}}`, `{{FTC_VERSION}}`, `{{GENERATOR_VERSION}}`
+- Upgrade only touches infrastructure files (build.gradle.kts, settings.gradle.kts, .gitignore, helper scripts)
+- User code (src/main/java/robot/, src/test/java/robot/) never modified during upgrade
+- Test suite validates:
+  - Template processing correctness
+  - All required files/directories created
+  - Generated projects build successfully
+  - Generated project tests pass
+  - Upgrade functionality works correctly
+  - Duplicate project detection
+
+### Migration from Earlier Versions
+If you have projects created with pre-1.0.0 versions:
+1. Add `.ftc-generator-version` file with content `0.9.0` (or appropriate version)
+2. Run `ftc-new-project your-project --upgrade`
+3. Review changes with `git diff`
+4. Test with `./gradlew test`
+
+## [Pre-1.0.0] - Historical
+
+### Features
+- Basic project generation
+- Separate project structure from FTC SDK
+- PC-based testing capability
+- Deploy scripts for robot deployment
+- Example subsystems and tests