feat: implement architectural layer independence test runner with chaos engineering (issue #35)

Comprehensive chaos engineering system for validating clean architecture layer independence:

- 7-layer architectural dependency matrix with transitive dependencies
- Multiple chaos injection strategies (import_failure, module_unavailable, function_failure)
- Automated dependency violation detection and reporting
- Safe chaos injection with state restoration mechanisms
- Integrated Makefile targets for chaos testing workflow
- Comprehensive logging and result persistence
- JSON report generation with architectural insights

Makefile additions:
- chaos-validate: Full architectural independence validation
- chaos-matrix: Display dependency matrix
- chaos-inject: Targeted layer chaos injection
- chaos-report: Generate comprehensive analysis reports

The system systematically injects controlled failures and monitors impact across
architectural layers to ensure proper isolation and dependency management.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Makefile

@@ -1,7 +1,7 @@
 # MarkiTect - Advanced Markdown Engine
 # Makefile for common development tasks
 
-.PHONY: help setup install test build clean update status dev lint format check-deps venv-status update-digest add-diary-entry list-issues show-issue list-open-issues close-issue close-issue-enhanced close-issues-batch test-from-issue tdd-start tdd-add-test tdd-finish tdd-status test-status test-new test-coverage test-arch test-foundation test-infrastructure test-integration test-domain test-service test-application test-presentation test-quick test-layers test-random test-random-seed test-random-repeat test-install-randomly test-clean test-tdd test-changed test-module test-cache-clean test-efficient cli-help release-status release-validate release-prepare release-build release-publish release-dry-run
+.PHONY: help setup install test build clean update status dev lint format check-deps venv-status update-digest add-diary-entry list-issues show-issue list-open-issues close-issue close-issue-enhanced close-issues-batch test-from-issue tdd-start tdd-add-test tdd-finish tdd-status test-status test-new test-coverage test-arch test-foundation test-infrastructure test-integration test-domain test-service test-application test-presentation test-quick test-layers test-random test-random-seed test-random-repeat test-install-randomly test-clean test-tdd test-changed test-module test-cache-clean test-efficient cli-help release-status release-validate release-prepare release-build release-publish release-dry-run chaos-validate chaos-matrix chaos-inject chaos-report
 
 # Default target
 help:
@@ -34,6 +34,12 @@ help:
 	@echo "  release-publish VERSION=x.y.z - Publish complete release"
 	@echo "  release-dry-run VERSION=x.y.z - Test release preparation"
 	@echo ""
+	@echo "Chaos Engineering:"
+	@echo "  chaos-validate       - Run architectural independence validation"
+	@echo "  chaos-matrix         - Show dependency matrix"
+	@echo "  chaos-inject LAYER=X TYPE=Y - Inject chaos into specific layer"
+	@echo "  chaos-report         - Generate chaos engineering report"
+	@echo ""
 	@echo "Architectural Testing:"
 	@echo "  test-arch           - Run all tests in architectural order"
 	@echo "  test-foundation     - Run foundation layer tests only"
@@ -245,6 +251,27 @@ release-dry-run:
 	fi
 	$(VENV_PYTHON) release.py prepare --version $(VERSION) --dry-run
 
+# Chaos Engineering targets
+chaos-validate:
+	@echo "🔥 Running architectural independence validation..."
+	$(VENV_PYTHON) chaos_test_runner.py validate-independence
+
+chaos-matrix:
+	@echo "🏗️  Showing architectural dependency matrix..."
+	$(VENV_PYTHON) chaos_test_runner.py dependency-matrix
+
+chaos-inject:
+	@echo "💥 Injecting chaos into layer..."
+	@if [ -z "$(LAYER)" ]; then \
+		echo "❌ Usage: make chaos-inject LAYER=L1_Presentation TYPE=import_failure"; \
+		exit 1; \
+	fi
+	$(VENV_PYTHON) chaos_test_runner.py inject-layer-failure --layer $(LAYER) $(if $(TYPE),--injection-type $(TYPE))
+
+chaos-report:
+	@echo "📄 Generating chaos engineering report..."
+	$(VENV_PYTHON) chaos_test_runner.py chaos-report
+
 # Code linting
 lint: $(VENV)/bin/activate
 	@echo "🔍 Running linting..."