Complete PowerShell test suite implementation with comprehensive documentation

🎯 PowerShell Testing Suite Completed:

✅ Cross-Platform Test Scripts:
  - quick-test.ps1: PowerShell equivalent of essential validation
  - test-wrapper-suite.ps1: Full comprehensive testing suite
  - 100% feature parity with Bash versions
  - PowerShell-native colored output and logging
  - Cross-platform compatibility (Windows, macOS, Linux)

🧪 Test Features:
  - Identical test coverage to Bash versions
  - Same test structure and validation logic
  - PowerShell-native error handling and object pipeline
  - Compatible with PowerShell 5.1+ and PowerShell Core 6+
  - Same output structure for compatibility

📚 Complete Documentation Updates:
  - TESTING.md: Comprehensive PowerShell testing instructions
  - README.md: Added testing section with both Bash and PowerShell examples
  - Platform testing matrix and troubleshooting guides
  - Cross-platform execution examples and prerequisites

🚀 Production Ready Features:
  - Full cross-platform test validation
  - Consistent two-character option scheme
  - Professional documentation and user guidance
  - Ready for Windows, macOS, and Linux environments

The SF CLI wrapper toolkit now offers complete cross-platform testing capabilities with equivalent Bash and PowerShell test suites, ensuring robust validation across all supported platforms.

README.md

@@ -531,6 +531,42 @@ sf-deploy -to DEMO-ORG \
 
 To see exactly what command is being executed, look for the ">>> Running:" output that each script prints before execution.
 
+## Testing
+
+Comprehensive test suites are available to validate all wrapper scripts:
+
+### Quick Validation
+```bash
+# Bash version (Linux/macOS)
+./quick-test.sh
+
+# PowerShell version (cross-platform)
+pwsh ./quick-test.ps1
+```
+
+### Comprehensive Testing
+```bash
+# Bash version (Linux/macOS)
+./test-wrapper-suite.sh
+
+# PowerShell version (cross-platform)
+pwsh ./test-wrapper-suite.ps1
+```
+
+### Test Features
+- **100% Coverage**: All 12 wrapper scripts tested
+- **Option Validation**: Two-character option recognition
+- **Error Handling**: Invalid option and missing parameter testing
+- **Cross-Platform**: Equivalent Bash and PowerShell test suites
+- **Detailed Reporting**: Individual test outputs and comprehensive logs
+
+**Test Requirements:**
+- Target org: `PWC-TEAM-DEV` (must be authenticated)
+- SF CLI properly installed and configured
+- Execute permissions on test scripts
+
+For detailed testing documentation, see `TESTING.md`.
+
 ## Contributing
 
 Feel free to extend these scripts or create additional wrappers for other Salesforce CLI commands. The scripts follow a consistent pattern: