New Features:
- PHP auto-install prompt via winget (for phpstan)
- Java runtime detection with informational message (no auto-install for security)
- Clear messaging about runtime dependencies

Details:
- Detects when PowerShell installers download tools that need runtimes
- Offers to install PHP automatically (like existing npm/Node.js flow)
- Shows informative message for Java tools without auto-install
- Explains security rationale for not installing Java

Affected tools:
- PHP: phpstan
- Java: checkstyle, ktlint, scalastyle, codenarc

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>