Add HTTP route inspection command

[josiahking]

Summary

• add a caller-registerable route:list command for configured HTTP routes
• render route methods and paths in collection order without invoking handlers
• reject unsupported arguments and options with an explicit usage error
• document application-owned command registration and composition boundaries
• update the accepted HTTP source inventory

Validation

• focused route inspection tests
• full HTTP test suite
• architecture and documentation tests
• dependency architecture validation
• PHPStan static analysis
• PHP CS Fixer
• full workspace quality suite
• Composer manifest validation
• supply-chain and licence checks
• prerelease consumer validation
• deterministic package split validation