feat(v3): restructure project + add complete frontend

- Restructure: move backend from new_project/ to backend/
- Add full React/TypeScript frontend (37 pages, 17 services, 16 type defs, 11 query hooks)
- Add docs/ with SRS specs, user stories, and workflow documentation
- Update .gitignore for new directory layout

Workflows implemented:
  WF1 User Signup, WF2 Placement Test, WF3 Exam Configuration,
  WF4 General English Exam, WF5 Course Generation,
  WF6 Entity Student Onboarding, AI Course Generation,
  Adaptive Learning Engine UI, White-Label Branding, Score Release

Made-with: Cursor

frontend/src/services/auth.service.ts

@@ -0,0 +1,30 @@
+import { api, setToken, clearToken } from "@/lib/api-client";
+import type { LoginRequest, LoginResponse, User, ResetPasswordRequest, CurrentUserResponse } from "@/types";
+import type { ApiSuccessResponse } from "@/types";
+
+export const authService = {
+  async login(data: LoginRequest): Promise<LoginResponse> {
+    // Odoo accepts `login` or `email` in JSON body
+    const res = await api.post<LoginResponse>("/login", { ...data, email: data.login });
+    setToken(res.token);
+    return res;
+  },
+
+  async logout(): Promise<void> {
+    await api.post<void>("/logout").catch(() => {});
+    clearToken();
+  },
+
+  async getUser(): Promise<User> {
+    const res = await api.get<CurrentUserResponse>("/user");
+    return res.user;
+  },
+
+  async resetPassword(data: ResetPasswordRequest): Promise<ApiSuccessResponse> {
+    return api.post<ApiSuccessResponse>("/reset/sendVerification", data);
+  },
+
+  async setInvitePassword(data: { token: string; password: string }): Promise<ApiSuccessResponse> {
+    return api.post<ApiSuccessResponse>("/auth/invite/set-password", data);
+  },
+};