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/examples/good-architecture/domain/repositories/IUserRepository.ts

@@ -0,0 +1,57 @@
+import { User } from "../aggregates/User"
+import { UserId } from "../value-objects/UserId"
+import { Email } from "../value-objects/Email"
+
+/**
+ * User Repository Interface
+ *
+ * DDD Pattern: Repository
+ * - Interface in domain layer
+ * - Implementation in infrastructure layer
+ * - Collection-like API for aggregates
+ *
+ * SOLID Principles:
+ * - DIP: domain depends on abstraction
+ * - ISP: focused interface
+ * - SRP: manages User persistence
+ *
+ * Clean Architecture:
+ * - Domain doesn't know about DB
+ * - Infrastructure implements this
+ */
+export interface IUserRepository {
+    /**
+     * Save user (create or update)
+     */
+    save(user: User): Promise<void>
+
+    /**
+     * Find user by ID
+     */
+    findById(id: UserId): Promise<User | null>
+
+    /**
+     * Find user by email
+     */
+    findByEmail(email: Email): Promise<User | null>
+
+    /**
+     * Find all users
+     */
+    findAll(): Promise<User[]>
+
+    /**
+     * Find active users
+     */
+    findActive(): Promise<User[]>
+
+    /**
+     * Delete user
+     */
+    delete(id: UserId): Promise<void>
+
+    /**
+     * Check if user exists
+     */
+    exists(id: UserId): Promise<boolean>
+}