feat(dimentorin): halaman Materi + AI Agent RAG

- /mentoring/materi: list materi (kategori chips, cards) + detail konten per slug
- /mentoring/ai-agent: chatbox RAG — tanya materi, jawaban dari Qdrant context + sumber relevansi %
- service: getMaterialsList/getMaterialBySlug/getMaterialById/getMaterialCategories + postChat + hooks
- header: menu Materi & AI Agent
- e2e verified: list 3 materi, detail tampil, chat 'ownership' jawab dari materi Rust + 3 sources (84/64/61%)

libs/service/src/api/dimentorin/index.ts

@@ -3,6 +3,11 @@ import {
   TArticleDetail,
   TArticleListItem,
   TArticleListParams,
+  TChatRequest,
+  TChatResponse,
+  TMaterialDetail,
+  TMaterialItem,
+  TMaterialListResponse,
   TBookSessionRequest,
   TCreatePaymentRequest,
   TMentorAvailability,
@@ -214,3 +219,47 @@ export const postRefreshPayment = async (
   });
   return data.data;
 };
+
+
+// ---- Materials ----
+export const getMaterialsList = async (): Promise<TMaterialListResponse> => {
+  const { data } = await api({ method: 'GET', url: '/dimentorin/materials' });
+  return data.data;
+};
+
+export const getMaterialBySlug = async (
+  slug: string
+): Promise<TMaterialDetail> => {
+  const { data } = await api({
+    method: 'GET',
+    url: `/dimentorin/materials/slug/${slug}`,
+  });
+  return data.data;
+};
+
+export const getMaterialById = async (
+  id: string
+): Promise<TMaterialDetail> => {
+  const { data } = await api({ method: 'GET', url: `/dimentorin/materials/${id}` });
+  return data.data;
+};
+
+export const getMaterialCategories = async (): Promise<string[]> => {
+  const { data } = await api({
+    method: 'GET',
+    url: '/dimentorin/materials/categories',
+  });
+  return data.data;
+};
+
+// ---- AI Agent (RAG) ----
+export const postChat = async (
+  request: TChatRequest
+): Promise<TChatResponse> => {
+  const { data } = await api({
+    method: 'POST',
+    url: '/dimentorin/ai/chat',
+    data: request,
+  });
+  return data.data;
+};

libs/service/src/hooks/dimentorin/index.ts

@@ -12,7 +12,12 @@ import {
   getMentorStats,
   getMentors,
   getMyPayments,
+    getMaterialById,
+  getMaterialBySlug,
+  getMaterialCategories,
+  getMaterialsList,
   getMySessions,
+  postChat,
   getPaymentById,
   getSessionPayments,
   postBookSession,
@@ -26,7 +31,12 @@ import {
   TArticleDetail,
   TArticleListItem,
   TArticleListParams,
-  TBookSessionRequest,
+    TBookSessionRequest,
+  TChatRequest,
+  TChatResponse,
+  TMaterialDetail,
+  TMaterialItem,
+  TMaterialListResponse,
   TCreatePaymentRequest,
   TMentorAvailability,
   TMentorDetail,
@@ -245,4 +255,55 @@ export const useGetArticleById = (
   });
 };
 
+
+
+// ---- Materials ----
+export const useGetMaterialsList = (): UseQueryResult<
+  TMaterialListResponse,
+  TResponseError
+> => {
+  return useQuery({
+    queryKey: ['get-materials-list'],
+    queryFn: async () => await getMaterialsList(),
+  });
+};
+
+export const useGetMaterialBySlug = (
+  slug: string
+): UseQueryResult<TMaterialDetail, TResponseError> => {
+  return useQuery({
+    queryKey: ['get-material-by-slug', slug],
+    queryFn: async () => await getMaterialBySlug(slug),
+    enabled: !!slug,
+  });
+};
+
+export const useGetMaterialById = (
+  id: string
+): UseQueryResult<TMaterialDetail, TResponseError> => {
+  return useQuery({
+    queryKey: ['get-material-by-id', id],
+    queryFn: async () => await getMaterialById(id),
+    enabled: !!id,
+  });
+};
+
+export const useGetMaterialCategories = (): UseQueryResult<
+  string[],
+  TResponseError
+> => {
+  return useQuery({
+    queryKey: ['get-material-categories'],
+    queryFn: async () => await getMaterialCategories(),
+  });
+};
+
+// ---- AI Agent ----
+export const usePostChat = () => {
+  return useMutation({
+    mutationKey: ['post-chat'],
+    mutationFn: async (request: TChatRequest) => await postChat(request),
+  });
+};
+
 export type { TResponseMessage };

libs/service/src/types/dimentorin/index.ts

@@ -182,3 +182,50 @@ export type TPayment = {
 export type TCreatePaymentRequest = {
   method: string; // 'va' | 'qris' | 'manual'
 };
+
+
+export type TMaterialItem = {
+  id: string;
+  mentorId: string;
+  title: string;
+  slug: string;
+  category: string;
+  description: string;
+  coverUrl?: string | null;
+  isPublished: boolean;
+  createdAt: string;
+  updatedAt: string;
+};
+
+export type TMaterialDetail = TMaterialItem & {
+  content: string;
+};
+
+export type TMaterialListResponse = {
+  data: TMaterialItem[];
+  meta: {
+    page: number;
+    per_page: number;
+    total?: number;
+    total_pages?: number;
+    has_next: boolean;
+    has_prev: boolean;
+  };
+};
+
+export type TChatRequest = {
+  question: string;
+  materialId?: string;
+};
+
+export type TChatSource = {
+  materialId: string;
+  title: string;
+  score: number;
+  snippet: string;
+};
+
+export type TChatResponse = {
+  answer: string;
+  sources: TChatSource[];
+};