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/shared/constants/index.ts

@@ -0,0 +1,72 @@
+export const APP_CONSTANTS = {
+    DEFAULT_TIMEOUT: 5000,
+    MAX_RETRIES: 3,
+    VERSION: "0.0.1",
+} as const
+
+export const ERROR_MESSAGES = {
+    VALIDATION_FAILED: "Validation failed",
+    NOT_FOUND: "Resource not found",
+    UNAUTHORIZED: "Unauthorized access",
+    INTERNAL_ERROR: "Internal server error",
+    FAILED_TO_ANALYZE: "Failed to analyze project",
+    FAILED_TO_SCAN_DIR: "Failed to scan directory",
+    FAILED_TO_READ_FILE: "Failed to read file",
+    ENTITY_NOT_FOUND: "Entity with id {id} not found",
+} as const
+
+/**
+ * Error codes
+ */
+export const ERROR_CODES = {
+    VALIDATION_ERROR: "VALIDATION_ERROR",
+    NOT_FOUND: "NOT_FOUND",
+    UNAUTHORIZED: "UNAUTHORIZED",
+    INTERNAL_ERROR: "INTERNAL_ERROR",
+} as const
+
+/**
+ * File extension constants
+ */
+export const FILE_EXTENSIONS = {
+    TYPESCRIPT: ".ts",
+    TYPESCRIPT_JSX: ".tsx",
+    JAVASCRIPT: ".js",
+    JAVASCRIPT_JSX: ".jsx",
+} as const
+
+/**
+ * TypeScript primitive type names
+ */
+export const TYPE_NAMES = {
+    STRING: "string",
+    NUMBER: "number",
+    BOOLEAN: "boolean",
+    OBJECT: "object",
+} as const
+
+/**
+ * Common regex patterns
+ */
+export const REGEX_PATTERNS = {
+    IMPORT_STATEMENT: /import\s+.*?\s+from\s+['"]([^'"]+)['"]/g,
+    EXPORT_STATEMENT: /export\s+(?:class|function|const|let|var)\s+(\w+)/g,
+} as const
+
+/**
+ * Placeholders for string templates
+ */
+export const PLACEHOLDERS = {
+    ID: "{id}",
+} as const
+
+/**
+ * Violation severity levels
+ */
+export const SEVERITY_LEVELS = {
+    ERROR: "error",
+    WARNING: "warning",
+    INFO: "info",
+} as const
+
+export * from "./rules"