feat(ai): add ADR-036 unified OCR architecture and frontend test coverage

- Add ADR-036 unified OCR architecture (typhoon-ocr via Ollama)
- Extend AI execution profiles for OCR sandbox configuration
- Add comprehensive frontend test coverage (components, hooks, services)
- Add backend test coverage for document-numbering services
- Update OCR sidecar with typhoon-ocr integration
- Add AI policy service and execution profile management
- Update AGENTS.md and architecture documentation

frontend/lib/stores/__tests__/ui-store.test.ts

@@ -0,0 +1,59 @@
+// File: frontend/lib/stores/__tests__/ui-store.test.ts
+// Change Log:
+// - 2026-06-13: Initial creation - test coverage for useUIStore (Zustand)
+
+import { describe, it, expect, beforeEach } from 'vitest';
+import { act, renderHook } from '@testing-library/react';
+import { useUIStore } from '../ui-store';
+
+describe('useUIStore', () => {
+  beforeEach(() => {
+    // รีเซ็ต store ก่อนแต่ละ test
+    act(() => {
+      useUIStore.setState({ isSidebarOpen: true });
+    });
+  });
+
+  it('ค่า default ควรเป็น isSidebarOpen: true', () => {
+    const { result } = renderHook(() => useUIStore());
+    expect(result.current.isSidebarOpen).toBe(true);
+  });
+
+  it('toggleSidebar ควรสลับค่า isSidebarOpen จาก true เป็น false', () => {
+    const { result } = renderHook(() => useUIStore());
+    act(() => {
+      result.current.toggleSidebar();
+    });
+    expect(result.current.isSidebarOpen).toBe(false);
+  });
+
+  it('toggleSidebar ควรสลับค่า isSidebarOpen จาก false เป็น true', () => {
+    act(() => {
+      useUIStore.setState({ isSidebarOpen: false });
+    });
+    const { result } = renderHook(() => useUIStore());
+    act(() => {
+      result.current.toggleSidebar();
+    });
+    expect(result.current.isSidebarOpen).toBe(true);
+  });
+
+  it('closeSidebar ควรตั้งค่า isSidebarOpen เป็น false', () => {
+    const { result } = renderHook(() => useUIStore());
+    act(() => {
+      result.current.closeSidebar();
+    });
+    expect(result.current.isSidebarOpen).toBe(false);
+  });
+
+  it('openSidebar ควรตั้งค่า isSidebarOpen เป็น true', () => {
+    act(() => {
+      useUIStore.setState({ isSidebarOpen: false });
+    });
+    const { result } = renderHook(() => useUIStore());
+    act(() => {
+      result.current.openSidebar();
+    });
+    expect(result.current.isSidebarOpen).toBe(true);
+  });
+});