String Extensions: Case-insensitive string operations, JSON validation, and utility methods

• compareWithoutCase() - Case-insensitive string comparison
• startsWithIgnoreCase() - Case-insensitive prefix checking
• containsWithoutCase() - Case-insensitive substring search
• isNullString, isNullEmpty - Null and empty string checks
• isJsonObject, isJsonArray, isJsonPrimitive - JSON format validation

List Extensions: Smart list operations with duplicate prevention

• insertIfNotExists() - Insert item only if it doesn't exist
• addAllIfNotExists() - Add multiple items, skipping duplicates
• removeIfExist() - Remove item if it exists in the list
• Custom equality checker support for complex objects

Safe Parser: Robust JSON parsing with error handling

• safeEncodeJson() - Safe JSON encoding with error handling
• safeDecodeJson() - Safe JSON decoding with validation
• parseIterable() - Type-safe iterable parsing

Base Data Model: Abstract class for consistent data handling

• fromMap() - Convert Map to model instance
• toMap() - Convert model to Map
• fromJson() - Convert JSON string to model instance
• toJson() - Convert model to JSON string
• Equatable integration for value equality

Object Serialization Extensions: Safe type conversion utilities

• fromSerializable<T>() - Safe type conversion with null safety

Interfaces: Abstract interfaces for common services

• AppLogger - Application logging interface
• ConnectivityService - Network connectivity management interface

Utility Functions: Additional helper utilities

• safeDebugLog() - Safe debug logging with stack trace support

Color Extensions: Enhanced color manipulation utilities

Map Extensions: Safe map parsing and utility functions

Iterable Extensions: Utility functions for iterable collections