v1.3.0

What's Added

• Message Validation System: Comprehensive message validation with configurable rules
  • Laravel-style validation configuration (required, min, max)
  • Support for nullable messages via TEXTIFY_MESSAGE_REQUIRED=false
  • Configurable minimum and maximum message length
  • Proper validation error messages

What's Enhanced

• Error Handling: Improved error mapping and messages for all Bangladeshi SMS providers
  • ReveSmsProvider: Enhanced error code mapping including error 114 handling
  • AlphaSmsProvider: Better error message descriptions
  • EsmsProvider: Improved error handling and status mapping
  • DhorolaSmsProvider: Enhanced error code explanations
  • MimSmsProvider: Better API response parsing
  • BulkSmsBdProvider: Comprehensive error code mapping

What's Fixed

• ReveSMS Error 114: "Content not provided" error now prevented by pre-send validation
• Empty Message Handling: Consistent behavior across all providers
• Whitespace Messages: Properly validates and rejects whitespace-only messages

What's Technical

• Added validateMessageContent() method to BaseProvider
• Enhanced BaseProvider with proper phone number validation methods
• Comprehensive test suite with 6 test cases
• PHPStan validation passed
• Backward compatible configuration

Full Changelog: v1.2.0...v1.3.0