feat: implement robust error handling and IDE integration

Add comprehensive error management system with stop-on-error control
and enhanced semantic analysis capabilities.

- Implement error count synchronization across all compiler phases
- Add enhanced source location tracking with line content context
- Create warning categorization system with 8 distinct categories
- Add configurable error limits (MaxErrors, StopOnFirstError, StrictMode)
- Implement immediate error recovery preventing cascading failures

- Add sophisticated data flow analysis with variable usage tracking
- Implement uninitialized variable detection with assignment validation
- Add unused variable detection and performance analysis
- Create deprecated feature detection with actionable hints

- Expand callback system with OnAnalysis for real-time code insights
- Add OnStartup/OnShutdown lifecycle management
- Implement structured error reporting with source context

- Expand test suite from 22 to 33 comprehensive tests (50% increase)
- Add dedicated error handling and warning system validation
- Implement performance benchmarking and regression prevention

Advances implementation from basic foundation to 35/144 BNF rules
(24.3% complete). All 33 tests pass with 100% success rate.

Breaking changes: None

Author: jarroddavis68

.gitignore

@@ -81,7 +81,7 @@ __recovery/
 # Boss dependency manager vendor folder https://github.com/HashLoad/boss
 modules/
 /bin/res/output
-/src_prev
+/src - Copy
 bin/CPascalTests.xml
 src/tests/test.pas
 !bin/LLVM-C.dll
@@ -90,3 +90,5 @@ changes-diff.cmd
 changes.diff
 zip_latest_commit.cmd
 CPascal-main.zip
+/bin/output
+bin/view.txt

CHANGELOG.md

@@ -8,15 +8,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ### Added
-- **feat(compiler): Implement Phase 2 Procedures, Functions & Loop Control** (2025-07-02 – jarroddavis68)
-  Completes all Phase 2 tasks by adding full support for subroutines and advanced loop control statements.
-  - Implements functions and procedures with support for value, `var`, and `const` parameters.
-  - Adds `external` function declarations and all BNF-specified calling conventions (`cdecl`, `stdcall`, `fastcall`, `register`) for C ABI interoperability.
-  - Adds support for `break` and `continue` statements with contextual validation.
-  - Fixes memory corruption and dangling pointer bugs by implementing correct ownership semantics for parameter symbols in the symbol table.
-  - Corrects parser logic for statement separator handling.
-  - Updates `coverage.pas` with comprehensive tests for all new capabilities.
-
 - **feat(compiler): Finalize core features and align test suites** (2025-07-01 – jarroddavis68)
   This major update implements foundational control flow structures, a comprehensive C-compatible type system, and a robust callback architecture. This commit also finalizes the implementation by correcting the lexer for full BNF conformance and aligning the entire test suite with the new type system.
   - Implemented if-then-else, while-do, repeat-until, and for-to/downto loops.