Master LLM Prompt: Implementing Kynas Architectural Overhaul

Instructions for the User: Copy and paste the prompt below directly into an LLM or AI coding assistant (e.g. Antigravity, Claude, GPT-4) to execute the architectural refactoring of Kyna systematically.

1You are a Principal Compiler and Systems Engineer tasked with executing the architectural refactoring of the Kyna programming language repository.
2 
3Your mission is to execute the engineering plans documented in `docs/plans/` step-by-step, transforming Kyna's compiler, type system, runtime, and standard library to match the modularity, safety, and high performance of Go (`golang/go`).
4 
5---
6 
7## 1. CRITICAL INVARIANTS & REPOSITORY RULES (MUST NEVER BE VIOLATED)
8 
91. **Naming Invariant (Zero Tolerance)**:
10   The language is named **Kyna**. Never use legacy project names anywhere in source code, headers, comments, or documentation. The verifier (`build_tools/verify_repository_architecture.py`) rejects any file containing legacy naming patterns.
11 
122. **Clean Folder Architecture (`AGENTS.md`)**:
13   - **One thing per file, one domain per folder**: Private implementations under `src/` must live in domain subfolders (`types/`, `validators/`, `checkers/`, `lowering/`, `rendering/`, `catalog/`, `codecs/`, etc.).
14   - No `.cpp`, `.cc`, or `.cxx` files directly under a module's `src/` root (except the documented facades in `library/core/src/format_value_codec.cpp` and `json_value_codec.cpp`).
15   - Do NOT create empty `register_*.cpp` templates.
16 
173. **Explicit CMake Source Discovery (No Globs)**:
18   - CMake uses explicit source lists. Never use `file(GLOB ...)` or `file(GLOB_RECURSE ...)`.
19   - Every newly created `.cpp` file must be added explicitly to its owning module's `CMakeLists.txt`.
20 
214. **4-Point Registration Invariant for Builtin Natives**:
22   Every callable standard-library function MUST be registered in all 4 places:
23   1. `library/core/src/bytecode/bytecode_standard_library.cpp` (bytecode invocation)
24   2. `library/core/src/catalog/standard_library_catalog.cpp` (tree-walk catalog)
25   3. `compiler/kyna_symbols/src/catalog/standard_library_symbols.cpp` (semantic symbol table)
26   4. `tests/tooling/verify_language_examples.py` (`BUILTIN_COVERAGE` entry and example call)
27 
285. **Verification Pipeline**:
29   After every modification, run the automated verification suite:
30   ```bash
31   python3 build_tools/verify_repository_architecture.py
32   python3 build_tools/verify_vscode_extension.py
33   ctest --test-dir build-debug --output-on-failure

2. REPOSITORY & REFERENCE PATHS

• Kyna Root: Current repository root directory
• Go Reference Source: /Users/ahmedmansour/Documents/go
• Architecture Research: docs/go_architecture_study/
• Executable Plans: docs/plans/
  • plan_01_type_system_polymorphic_hierarchy.md
  • plan_02_decompose_god_functions_and_visitors.md
  • plan_03_scope_tree_and_symbol_object_model.md
  • plan_04_multi_file_packages_and_internal_shielding.md
  • plan_05_universal_streaming_and_cancellation.md
  • plan_06_runtime_unification_and_security.md
  • plan_07_stdlib_expansion_and_high_performance_sort.md

3. EXECUTION PHASES & STEP-BY-STEP TASKS

Execute the plans in strict dependency order:

Phase 1: Type System Polymorphic Hierarchy (Plan 01)

1. In compiler/kyna_types/include/kyna/types/type.hpp, define the abstract Type interface (kind(), underlying(), str(), isAssignableTo(), isIdenticalTo()).
2. Implement concrete type classes in compiler/kyna_types/src/types/:
   • BasicType: Int, Float, Bool, String, Void, Null, Any.
   • SignatureType: first-class function signatures with params, returnType, receiverType.
   • NamedType: nominal classes and user types with underlying types and method sets.
   • UnionType and NullableType.
3. Implement Universe singleton registry (Universe::Int(), Universe::Bool()) for zero-allocation primitive type checks.
4. Update compiler/kyna_types/CMakeLists.txt with all new source files.
5. Provide a backward-compatible adapter so existing code using TypeRef compiles incrementally.
6. Verify with ctest -R type and architecture verifier.

Phase 2: Decompose God-Functions & AST Visitors (Plan 02)

1. Create compiler/kyna_syntax/include/kyna/syntax/ast_visitor.hpp with template ASTVisitor<Result>.
2. Decompose Analyzer::expr (365 lines in compiler/kyna_typecheck/src/checkers/type_checker.cpp):
   • Extract operator checking to src/checkers/check_operators.cpp.
   • Extract call/index/member checking to src/checkers/check_invocations.cpp.
   • Keep type_checker.cpp as a clean, <80 line dispatcher.
3. Decompose Analyzer::stmt (280 lines in compiler/kyna_typecheck/src/checkers/statement_checker.cpp):
   • Extract declarations to src/checkers/check_declarations.cpp.
   • Extract control flow to src/checkers/check_control_flow.cpp.
4. Update compiler/kyna_typecheck/CMakeLists.txt.
5. Verify with ctest -R semantic and architecture verifier.

Phase 3: Lexical Scope Tree & Symbol Object Model (Plan 03)

1. Create compiler/kyna_typecheck/include/kyna/semantics/symbol.hpp defining the Symbol interface and concrete VarSymbol, FuncSymbol, ClassSymbol.
2. Refactor Scope in compiler/kyna_typecheck/include/kyna/semantics/scope.hpp into a full lexical tree with insert(symbol) duplicate detection and parent-walking lookup(name).
3. Implement EnvironmentGuard RAII helper to replace mutable fields (currentClass, currentReturn, activeLoopLabels) in Analyzer.
4. Implement three-color (White/Grey/Black) cycle detection for recursive type declarations.
5. Verify with ctest -R semantic and architecture verifier.

Phase 4: Multi-File Packages & Internal Shielding (Plan 04)

1. Update tools/kyna_cli/src/commands/run_command.cpp and check_command.cpp to accept package directories.
2. Implement PackageLoader under compiler/kyna_loading/src/loading/package_loader.cpp to parse all *.kyna files in a folder into a single package unit.
3. Implement internal/ package import shielding in semantic analysis.
4. Verify with multi-file package test cases.

Phase 5: Universal Streaming & Cancellation (Plan 05)

1. Define IReader and IWriter stream interfaces in runtime/kyna_host/include/kyna/host/runtime_capabilities.hpp.
2. Implement FileStreamReader and FileStreamWriter under runtime/kyna_host/src/capabilities/.
3. Introduce Context cancellation tokens across Analyzer::analyze and runtime evaluation.
4. Expose stream APIs to standard library.

Phase 6: Runtime Engine Unification & Security Hardening (Plan 06)

1. Implement NativeRegistry in runtime/kyna_vm/src/execution/native_registry.cpp to unify native function dispatch between tree-walk and bytecode engines.
2. Remove the mock interceptor from runtime/kyna_host/src/capabilities/curl_network.cpp.
3. Replace insecure std::system() in runtime/kyna_host/src/capabilities/local_process.cpp and tools/kyna_cli/src/commands/project_dependencies.cpp with safe argument vector spawning via posix_spawn / execv.
4. Verify that tree-walk and bytecode produce identical execution output.

Phase 7: Stdlib Expansion & High-Performance Sort (Plan 07)

1. Replace $O(n^2)$ bubbleSort in library/core/src/catalog/collections_library.cpp with $O(n \log n)$ introsort.
2. Add high-precision monotonic time (timeNow, timeSleep) strictly adhering to the 4-point registration rule.
3. Add cryptographic hashing (cryptoSha256) following the 4-point registration rule.
4. Run python3 tests/tooling/verify_language_examples.py ./build-debug/bin/ky . to verify 100% builtin coverage.

4. CODE STYLE & PATTERNS TO ENFORCE

• Modern C++: Use C++20 features where appropriate (std::string_view, std::optional, std::variant, std::span).
• Zero Raw Pointers without Ownership: Use std::unique_ptr for exclusive ownership, interned raw pointers (const Type*) for immutable singletons.
• RAII Everything: Use scope guards instead of manual push/pop operations.
• Error Values Over Exceptions: Avoid throwing C++ exceptions on normal semantic or lexical errors; collect Diagnostic values into a diagnostic sink.
• Explicit Include Paths: Public headers use #include <kyna/...>; internal private headers use relative paths.

Begin by confirming which Phase you are ready to execute.

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