feat: React 18 프론트엔드 추가 및 프로젝트 구조 정리

- wtm-frontend → wtm-frontend-vue 이름 변경
- wtm-frontend-react 추가 (React 18 + PrimeReact + Zustand)
  - 동일한 모듈 구조 및 API 연동 (Vue 버전과 기능 동일)
  - Vue:5173 / React:5174 포트 분리
- 개발자 가이드에 React 프론트엔드 안내 추가
- .gitignore: Claude/OMC, 문서 생성 스크립트, package-lock 제외
- 불필요 파일 git 추적 제거 (.omc, generate_*.py, regenerate_*.py)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

wtm-frontend-react/src/modules/auth/auth.store.ts

@@ -0,0 +1,64 @@
+import { create } from 'zustand';
+import { authService as tokenService } from '@/core/auth/auth.service';
+import { authApi } from './auth.service';
+import type { AuthUser } from '@/core/auth/auth.types';
+
+interface AuthState {
+  currentUser: AuthUser | null;
+  loading: boolean;
+  unreadCount: number;
+  login: (email: string, password: string) => Promise<void>;
+  fetchMe: () => Promise<void>;
+  logout: () => void;
+  reset: () => void;
+}
+
+function mapUser(u: Record<string, unknown>): AuthUser {
+  return {
+    id: u.id as number,
+    email: u.email as string,
+    fullName: (u.full_name ?? u.fullName ?? '') as string,
+    roles: Array.isArray(u.roles) && u.roles.length ? u.roles : (u.is_admin ? ['SA'] : ['USER']),
+    departmentId: (u.department_id ?? u.departmentId) as number | undefined,
+  };
+}
+
+export const useAuthStore = create<AuthState>((set) => ({
+  currentUser: null,
+  loading: false,
+  unreadCount: 0,
+
+  login: async (email, password) => {
+    set({ loading: true });
+    try {
+      const { data } = await authApi.login({ email, password });
+      const accessToken = (data.access_token ?? data.accessToken) as string;
+      const refreshToken = (data.refresh_token ?? data.refreshToken) as string;
+      tokenService.setTokens(accessToken, refreshToken);
+      set({ currentUser: mapUser(data.user as unknown as Record<string, unknown>) });
+    } finally {
+      set({ loading: false });
+    }
+  },
+
+  fetchMe: async () => {
+    try {
+      const { data } = await authApi.me();
+      set({ currentUser: mapUser(data as unknown as Record<string, unknown>) });
+    } catch {
+      tokenService.clearTokens();
+      set({ currentUser: null });
+      window.location.href = '/login';
+    }
+  },
+
+  logout: () => {
+    tokenService.clearTokens();
+    set({ currentUser: null });
+    window.location.href = '/login';
+  },
+
+  reset: () => {
+    set({ currentUser: null, loading: false, unreadCount: 0 });
+  },
+}));