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/ielts-exam.service.ts

@@ -0,0 +1,44 @@
+import { api } from "@/lib/api-client";
+import type {
+  IELTSExamConfig,
+  IELTSExamResponse,
+  IELTSSkillConfig,
+  ContentPoolItem,
+  ContentPoolFilters,
+  AssemblyResult,
+  ExamValidationReport,
+  ExamAssignRequest,
+} from "@/types";
+import type { ApiSuccessResponse } from "@/types";
+
+export const ieltsExamService = {
+  create: (data: IELTSExamConfig) =>
+    api.post<IELTSExamResponse>("/exam/ielts/create", data),
+
+  getSkills: (examId: number) =>
+    api.get<IELTSSkillConfig[]>(`/exam/ielts/${examId}/skills`),
+
+  getContentPoolCount: (examId: number) =>
+    api.get<Record<string, number>>(`/exam/ielts/${examId}/content-pool-count`),
+
+  getContentPool: (examId: number, filters: ContentPoolFilters) =>
+    api.get<ContentPoolItem[]>(`/exam/ielts/${examId}/content-pool`, filters as Record<string, string | number | boolean | undefined>),
+
+  autoAssemble: (examId: number) =>
+    api.post<AssemblyResult[]>(`/exam/ielts/${examId}/auto-assemble`),
+
+  suggest: (examId: number) =>
+    api.post<AssemblyResult[]>(`/exam/ielts/${examId}/suggest`),
+
+  saveQuestions: (examId: number, sectionId: number, questionIds: number[]) =>
+    api.put<ApiSuccessResponse>(`/exam/ielts/${examId}/sections/${sectionId}/questions`, { question_ids: questionIds }),
+
+  validate: (examId: number) =>
+    api.get<ExamValidationReport>(`/exam/ielts/${examId}/validate`),
+
+  update: (examId: number, data: { status: string }) =>
+    api.put<ApiSuccessResponse>(`/exam/ielts/${examId}`, data),
+
+  assign: (examId: number, data: ExamAssignRequest) =>
+    api.post<ApiSuccessResponse>(`/exam/ielts/${examId}/assign`, data),
+};