docs: update changelog [skip ci]

Author: actions-user

CHANGELOG.md

@@ -7,6 +7,112 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Removed
+- **Release v0.3.0: Production-Ready Milestone** (2025-10-14 – jarroddavis68)
+  This release brings NitroPascal from proof-of-concept to production-ready with
+  comprehensive string handling, file I/O, exception handling, dynamic data
+  structures, external library integration, and conditional compilation -
+  everything you need to build real, working applications.
+  KEY MILESTONE:
+  NitroPascal now has enough features to start doing REAL, PRODUCTIVE WORK. You
+  can build actual applications that manipulate strings, read/write files, handle
+  errors gracefully with exceptions, use dynamic arrays and sets, call external
+  libraries, and target different platforms with conditional compilation.
+  EXCEPTION HANDLING:
+  - try..except blocks for error recovery
+  - try..finally blocks for resource cleanup
+  - try..except..finally for comprehensive error handling
+  - raise statement for throwing exceptions
+  - on E: Exception do for typed exception catching
+  - Proper exception propagation and stack unwinding
+  - Resource safety with deterministic cleanup
+  DYNAMIC DATA STRUCTURES:
+  - Dynamic arrays (array of T) with SetLength, Length, and High
+  - Sets (set of T) with Include, Exclude, and membership testing (in)
+  - Enhanced RTL with np::DynArray<T> and np::Set<T> implementations
+  STRING MANIPULATION:
+  - Complete string library: Copy, Pos, Delete, Insert
+  - Case conversion: UpperCase, LowerCase
+  - Whitespace handling: Trim, TrimLeft, TrimRight
+  - Type conversion: IntToStr, StrToInt, StrToIntDef, FloatToStr, StrToFloat
+  - Formatted output: Format function with variadic templates
+  MATH LIBRARY:
+  - Basic operations: Abs, Sqr, Sqrt
+  - Trigonometry: Sin, Cos, Tan, ArcSin, ArcCos, ArcTan
+  - Rounding: Round, Trunc, Ceil, Floor
+  - Utility: Max, Min, Random, Randomize
+  FILE I/O:
+  - File management: Assign, Reset, Rewrite, Append, Close
+  - Text I/O: Write(F), WriteLn(F), ReadLn
+  - Binary I/O: BlockRead, BlockWrite
+  - File positioning: Seek, FilePos, FileSize, Eof
+  - File system: FileExists, DirectoryExists, CreateDir, GetCurrentDir
+  - File operations: DeleteFile, RenameFile
+  CONTROL FLOW ENHANCEMENTS:
+  - Loop control: break, continue
+  - Early return: exit, exit with return value
+  - Simplified access: with statement
+  - Forward declarations for functions and procedures
+  ORDINAL FUNCTIONS:
+  - Type inspection: Ord, Chr, Low, High, SizeOf
+  - Iteration: Succ, Pred, Inc, Dec (with optional step)
+  - Pointer utilities: Assigned
+  MEMORY MANAGEMENT:
+  - Advanced allocation: GetMem, FreeMem, ReallocMem
+  - Memory operations: FillChar, Move
+  - Block operations for efficient buffer manipulation
+  EXTERNAL LIBRARY INTEGRATION:
+  - External function declarations (external 'library.dll')
+  - Multiple calling conventions: stdcall, cdecl, fastcall
+  - Automatic string type conversion (PChar, PWideChar, PAnsiChar)
+  - External library tracking for automatic linking
+  - Seamless C/C++ interoperability
+  CONDITIONAL COMPILATION:
+  - Platform detection: WIN32, WIN64, LINUX, MACOS, MSWINDOWS, POSIX
+  - Architecture detection: CPUX64, CPU386, CPUARM64
+  - Build mode detection: DEBUG, RELEASE
+  - Application type: CONSOLE_APP, GUI_APP
+  - Preprocessor directives: {$ifdef}, {$else}, {$endif}
+  - Custom application type: {$apptype console|gui}
+  PLATFORM SERVICES:
+  - Command-line arguments: ParamCount, ParamStr
+  - Program termination: Halt
+  RUNTIME LIBRARY ENHANCEMENTS:
+  - Enhanced np::String with comprehensive string manipulation
+  - New np::DynArray<T> for dynamic array support
+  - New np::Set<T> for set operations
+  - File I/O wrappers maintaining Delphi semantics
+  - Console input: ReadLn
+  CODE GENERATION IMPROVEMENTS:
+  - External function handling (no C++ declaration generation)
+  - Automatic library dependency tracking
+  - Calling convention mapping
+  - String type conversions for external calls
+  - Forward declaration support
+  BUILD SYSTEM ENHANCEMENTS:
+  - Automatic define injection based on target platform
+  - Automatic define injection based on build mode
+  - Architecture-specific defines
+  - Application type defines
+  - Windows subsystem control (console vs GUI)
+  TESTING INFRASTRUCTURE:
+  - Integrated test runner for validation
+  - Comprehensive test suite covering all features
+  This release represents a major leap forward in capability. With exception
+  handling, string manipulation, file I/O, dynamic data structures, external
+  library support, and conditional compilation, you can now build robust, real
+  applications in NitroPascal.
+  THE PRODUCTIVITY MILESTONE:
+  NitroPascal is no longer just a compiler experiment - it's a tool you can use
+  to build actual, working software. Parse files, manipulate data, handle errors
+  gracefully, integrate with existing libraries, target multiple platforms, and
+  ship real applications with confidence.
+  Write once in pure Delphi. Compile to native C++. Run everywhere.
+  Version: 0.3.0
+
+
+## [0.2.0] - 2025-10-13
+
 ### Added
 - **Repo Update** (2025-10-12 – jarroddavis68)
   Release v0.2.0: Core language features and RTL foundation
@@ -54,15 +160,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   transpilation pipeline is: Pascal → C++ (via RTL) → Native Code (via Zig/LLVM).
   Version: 0.2.0
 
-
-### Fixed
-- **Repo Update** (2025-10-11 – jarroddavis68)
-  - Fixed links in README and on website
-
-
-## [0.1.0] - 2025-10-07
-
-### Added
 - **Create FUNDING.yml** (2025-07-27 – Jarrod Davis)
 
 
@@ -85,3 +182,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - **Initial commit** (2025-07-27 – Jarrod Davis)
 
+
+### Fixed
+- **Repo Update** (2025-10-11 – jarroddavis68)
+  - Fixed links in README and on website
+