feat(guardian): add guardian package - code quality analyzer

Add @puaros/guardian package v0.1.0 - code quality guardian for vibe coders and enterprise teams.

Features:
- Hardcode detection (magic numbers, magic strings)
- Circular dependency detection
- Naming convention enforcement (Clean Architecture)
- Architecture violation detection
- CLI tool with comprehensive reporting
- 159 tests with 80%+ coverage
- Smart suggestions for fixes
- Built for AI-assisted development

Built with Clean Architecture and DDD principles.
Works with Claude, GPT, Copilot, Cursor, and any AI coding assistant.

packages/guardian/src/domain/services/INamingConventionDetector.ts

@@ -0,0 +1,20 @@
+import { NamingViolation } from "../value-objects/NamingViolation"
+
+/**
+ * Interface for detecting naming convention violations in source files
+ */
+export interface INamingConventionDetector {
+    /**
+     * Detects naming convention violations for a given file
+     *
+     * @param fileName - Name of the file to check (e.g., "UserService.ts")
+     * @param layer - Architectural layer of the file (domain, application, infrastructure, shared)
+     * @param filePath - Relative file path for context
+     * @returns Array of naming convention violations
+     */
+    detectViolations(
+        fileName: string,
+        layer: string | undefined,
+        filePath: string,
+    ): NamingViolation[]
+}