# CognitiveEngine Bridge (Project1)

[![C++20](https://img.shields.io/badge/Language-C%2B%2B20-00599C?style=for-the-badge&logo=cplusplus&logoColor=white)](https://en.cppreference.com/w/cpp/20)
[![Compiler-GCC13](https://img.shields.io/badge/Compiler-GCC%2013%2B%20%7C%20Clang%2016%2B-informational?style=for-the-badge)](https://gcc.gnu.org/)
[![Sanitizers](https://img.shields.io/badge/Sanitizers-ASan%20%7C%20LSan%20%7C%20UBSan-brightgreen?style=for-the-badge)]()
[![Code-Style](https://img.shields.io/badge/Code%20Style-LLVM-orange?style=for-the-badge)](https://llvm.org/)

A deterministic C++20 kinematic execution engine and interactive REPL bridge featuring conservative kinematic rotations, hyperbolic dissipation decay, and state session tracking.

---

## 1. System Architecture

```mermaid
graph TD
    subgraph Core ["Kinematic & Decay Core (include/)"]
        R["Rotator.hpp<br/>(SO(3) Conservative)"]
        S["Sieve.hpp<br/>(Dissipation Decay)"]
        T["Types.hpp<br/>(State Definitions)"]
    end

    subgraph State ["Attribution & State Engine"]
        L["SessionLedger.hpp<br/>(Transition Tracking)"]
        E["CognitiveEngine.cpp<br/>(State Transition Orchestrator)"]
    end

    subgraph Driver ["REPL Entrypoint"]
        M["main.cpp<br/>(Native CLI / Bridge)"]
    end

    M --> E
    E --> Core
    E --> L

Directory Layout

.
├── CognitiveEngine.h          # Core interface declaration
├── CognitiveEngine.cpp        # State transition orchestrator implementation
├── include/
│   ├── Rotator.hpp            # SO(3) conservative kinematic rotation
│   ├── SessionLedger.hpp      # Transition tracking and attribution records
│   ├── Sieve.hpp              # Non-linear hyperbolic dissipation decay
│   └── Types.hpp              # Foundational state coordinate definitions
└── src/
    └── main.cpp               # Native interactive REPL driver

---

2. Quick Start & Execution

Important

Compiler Contract: Requires GCC 13+ or Clang 16+ targeting -std=c++20. Relies fundamentally on <numbers>, concepts, and structured bindings.

Build & Run

# Build the unified bridge executable
g++ -std=c++20 -Wall -Wextra -Werror -Iinclude CognitiveEngine.cpp main.cpp -o cognitive_engine_bridge

# Execute interactive REPL driver
./cognitive_engine_bridge

---

3. Verification & Diagnostic Manual

Follow this matrix to verify structural compliance, enforce formatting standards, and ensure invariant preservation across runtime passes.

Verification Matrix

Layer	Tool	Target Domain	Command	Invariant / Pass Criteria
Static	clang-tidy	Modern C++20 / Bugs	clang-tidy CognitiveEngine.cpp main.cpp -- -std=c++20 -Iinclude	Zero warnings from bugprone, modernize, or analyzer
Static	cppcheck	Memory / Null Pointer	cppcheck --enable=all --inconclusive --std=c++20 -I include .	Zero uninitialized values or out-of-scope references
Style	clang-format	LLVM Layout Compliance	clang-format --dry-run -Werror -style=LLVM *.cpp include/*.hpp	Clean zero-diff exit code
Dynamic	ASan / LSan	Heap / Pointer Lifetimes	g++ -std=c++20 -fsanitize=address,leak -g -Iinclude ...	Zero leak or use-after-free aborts across full lifecycle
Dynamic	UBSan	Undefined Operations	g++ -std=c++20 -fsanitize=undefined -g -Iinclude ...	Zero arithmetic overflows or unaligned trap signals

sudo apt-get update && sudo apt-get install -y \
  clang-tidy \
  cppcheck \
  clang-format \
  graphviz \
  build-essential

---

Static Analysis & Linting

Modern C++ Linting (clang-tidy)

Detect modernize opportunities, bug-prone constructs, and performance bottlenecks:

clang-tidy CognitiveEngine.cpp main.cpp -- -std=c++20 -Iinclude \
  -checks="bugprone-*,performance-*,readability-*,modernize-*,clang-analyzer-*"

Flaw Detection (cppcheck)

Scan the repository tree for uninitialized values, out-of-scope references, and null pointer dereferences:

cppcheck --enable=all --inconclusive --std=c++20 --suppress=missingIncludeSystem -I include .

Style Enforcement (clang-format)

Validate code indentation, brace placement, and pointer alignments against the LLVM style guide:

# Verify style compliance without modifying files:
clang-format --dry-run -Werror -style=LLVM CognitiveEngine.h CognitiveEngine.cpp main.cpp

# Auto-format in place:
clang-format -i -style=LLVM CognitiveEngine.h CognitiveEngine.cpp main.cpp

---

Dynamic Sanitizers & Runtime Instrumentation

Run dynamic instrumentation to guarantee invariant preservation, zero-leak heap execution, and deterministic memory teardown.

Address & Leak Sanitizer (ASan / LSan)

Traps heap overflows, use-after-free, stack-buffer corruption, and memory allocation leaks:

# Compile with ASan + LSan instrumentation
g++ -std=c++20 -fsanitize=address,leak -g -Iinclude CognitiveEngine.cpp main.cpp -o asan_test

# Execute test run
./asan_test

Note

Pass Invariant: The binary must complete state initialization, rotation/decay mutation passes, and teardown with zero ASan crash reports or leak allocations.

Undefined Behavior Sanitizer (UBSan)

Intercepts integer overflow, division by zero, unaligned memory accesses, and null pointer dereferences:

# Compile with UBSan instrumentation
g++ -std=c++20 -fsanitize=undefined -g -Iinclude CognitiveEngine.cpp main.cpp -o ubsan_test

# Execute runtime verification
./ubsan_test

Note

Pass Invariant: Full execution cycle completes with zero UBSan runtime trap signals or warnings.