feat: Major update with validators, skills, dashboard, and docs reorganization

- Add validation framework (config, model, results, study validators)
- Add Claude Code skills (create-study, run-optimization, generate-report,
  troubleshoot, analyze-model)
- Add Atomizer Dashboard (React frontend + FastAPI backend)
- Reorganize docs into structured directories (00-09)
- Add neural surrogate modules and training infrastructure
- Add multi-objective optimization support

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

atomizer-dashboard/frontend/src/api/client.ts

@@ -0,0 +1,58 @@
+import { Study, StudyListResponse, HistoryResponse, PruningResponse, StudyStatus } from '../types';
+
+const API_BASE = '/api';
+
+class ApiClient {
+  async getStudies(): Promise<StudyListResponse> {
+    const response = await fetch(`${API_BASE}/optimization/studies`);
+    if (!response.ok) throw new Error('Failed to fetch studies');
+    return response.json();
+  }
+
+  async getStudyStatus(studyId: string): Promise<StudyStatus> {
+    const response = await fetch(`${API_BASE}/optimization/studies/${studyId}/status`);
+    if (!response.ok) throw new Error('Failed to fetch study status');
+    return response.json();
+  }
+
+  async getStudyHistory(studyId: string): Promise<HistoryResponse> {
+    const response = await fetch(`${API_BASE}/optimization/studies/${studyId}/history`);
+    if (!response.ok) throw new Error('Failed to fetch study history');
+    return response.json();
+  }
+
+  async getStudyPruning(studyId: string): Promise<PruningResponse> {
+    const response = await fetch(`${API_BASE}/optimization/studies/${studyId}/pruning`);
+    if (!response.ok) throw new Error('Failed to fetch pruning data');
+    return response.json();
+  }
+
+  async createStudy(config: any): Promise<{ study_id: string }> {
+    const response = await fetch(`${API_BASE}/optimization/studies`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(config),
+    });
+    if (!response.ok) throw new Error('Failed to create study');
+    return response.json();
+  }
+
+  async getStudyReport(studyId: string): Promise<{ content: string }> {
+    const response = await fetch(`${API_BASE}/optimization/studies/${studyId}/report`);
+    if (!response.ok) throw new Error('Failed to fetch report');
+    return response.json();
+  }
+
+  // Future endpoints for control
+  async startOptimization(studyId: string): Promise<void> {
+    const response = await fetch(`${API_BASE}/optimization/studies/${studyId}/start`, { method: 'POST' });
+    if (!response.ok) throw new Error('Failed to start optimization');
+  }
+
+  async stopOptimization(studyId: string): Promise<void> {
+    const response = await fetch(`${API_BASE}/optimization/studies/${studyId}/stop`, { method: 'POST' });
+    if (!response.ok) throw new Error('Failed to stop optimization');
+  }
+}
+
+export const apiClient = new ApiClient();