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/bad-architecture/framework-leaks/UserEntity.ts

@@ -0,0 +1,62 @@
+/**
+ * BAD EXAMPLE: Framework Leak in Domain Layer
+ *
+ * Guardian should detect:
+ * ❌ Prisma import in domain layer
+ * ❌ Framework dependency in domain
+ *
+ * Why bad:
+ * - Domain coupled to infrastructure
+ * - Hard to test
+ * - Can't change DB without changing domain
+ * - Violates Dependency Inversion Principle
+ * - Violates Clean Architecture
+ */
+
+// ❌ BAD: Framework in domain!
+import { PrismaClient } from "@prisma/client"
+
+export class UserEntity {
+    constructor(
+        public id: string,
+        public email: string,
+        private readonly prisma: PrismaClient,
+    ) {}
+
+    public async save(): Promise<void> {
+        await this.prisma.user.create({
+            data: {
+                id: this.id,
+                email: this.email,
+            },
+        })
+    }
+}
+
+/**
+ * ✅ GOOD VERSION:
+ *
+ * // domain/entities/User.ts - NO framework imports!
+ * export class User {
+ *     constructor(
+ *         private readonly id: UserId,
+ *         private readonly email: Email,
+ *     ) {}
+ *
+ *     // No persistence logic here
+ * }
+ *
+ * // domain/repositories/IUserRepository.ts
+ * export interface IUserRepository {
+ *     save(user: User): Promise<void>
+ * }
+ *
+ * // infrastructure/repositories/PrismaUserRepository.ts
+ * export class PrismaUserRepository implements IUserRepository {
+ *     constructor(private readonly prisma: PrismaClient) {}
+ *
+ *     async save(user: User): Promise<void> {
+ *         // Prisma code here
+ *     }
+ * }
+ */