Merge S4-10: mark scheme editor + SpecPoint picker

- Add /exam-marker/:templateId/marks route with MarkSchemePage
- Per-Part mark scheme editor: points/levels/parts/checklist/free forms
- SpecPoint picker via GET /api/exam/specs/{spec_code}/points (falls back to manual spec_ref when endpoint 404s)
- Manual neo4j-sync button; ASSESSES edge verified in cc.public.exams
- Edit marks button on each template card in dashboard
- Merge-resolved: AppRoutes, index.ts, exam.types.ts, ExamDashboardPage (kept grouped UI + added Edit marks button)

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

src/services/exam/examRepository.ts

@@ -17,6 +17,9 @@ import type {
   ExamResponseArea,
   ExamTemplate,
   ExamTemplateDetail,
+  Neo4jSyncResult,
+  PatchQuestionPayload,
+  SpecPoint,
   TemplateReplacePayload,
   UpdateTemplateMetaPayload,
 } from '../../types/exam.types';
@@ -184,6 +187,28 @@ export const examRepository = {
     const headers = await authHeaders();
     await axios.delete(`${EXAM_BASE}/templates/${templateId}`, { headers });
   },
+
+  async patchQuestion(questionId: string, payload: PatchQuestionPayload) {
+    const headers = await authHeaders();
+    const res = await axios.patch(`${EXAM_BASE}/questions/${questionId}`, payload, { headers });
+    return res.data;
+  },
+
+  async listSpecPoints(specCode: string, search?: string): Promise<SpecPoint[]> {
+    const headers = await authHeaders();
+    const res = await axios.get<{ points?: SpecPoint[] } | SpecPoint[]>(
+      `${EXAM_BASE}/specs/${encodeURIComponent(specCode)}/points`,
+      { headers, params: search ? { q: search } : undefined },
+    );
+    if (Array.isArray(res.data)) return res.data;
+    return res.data.points ?? [];
+  },
+
+  async syncTemplateToGraph(templateId: string): Promise<Neo4jSyncResult> {
+    const headers = await authHeaders();
+    const res = await axios.post<Neo4jSyncResult>(`${EXAM_BASE}/templates/${templateId}/neo4j-sync`, {}, { headers });
+    return res.data;
+  },
 };
 
 export default examRepository;