feat: add StroyBot app shell with URL routing

One web part replaces the separate stroy-bot-* web parts. The section and
its parameters live in the page query string (?page=objects&projectId=5),
so links can be copied, opened in a new tab and the browser Back button works.

- shared config: site/Dataverse/API addresses, list and table names
- HTTP layer behind IHttpClient so repositories can be unit-tested
- ui-kit AppLayout + Sidebar, placeholder for sections not ported yet
- migration checklist with every feature of the old web parts
- design tokens mirrored from ui-kit instead of 8 copies

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/webparts/stroyBot/app/navigation.test.ts

@@ -0,0 +1,34 @@
+import { buildSidebarItems, navPageFor } from './navigation';
+
+describe('buildSidebarItems', () => {
+  it('без проекта в меню только главная', () => {
+    expect(buildSidebarItems(undefined).map((item) => item.id)).toEqual(['hub']);
+  });
+
+  it('с проектом — все разделы', () => {
+    expect(buildSidebarItems('5').map((item) => item.id)).toEqual([
+      'hub',
+      'objects',
+      'reports',
+      'report',
+      'import',
+      'resources',
+      'binder'
+    ]);
+  });
+
+  it('недоступные разделы скрываются, главная остаётся всегда', () => {
+    const onlyReports = (page: string): boolean => page === 'reports';
+    expect(buildSidebarItems('5', onlyReports).map((item) => item.id)).toEqual(['hub', 'reports']);
+  });
+});
+
+describe('navPageFor', () => {
+  it('работы подсвечивают пункт «Объекты»', () => {
+    expect(navPageFor('works')).toEqual('objects');
+  });
+
+  it('остальные разделы подсвечивают сами себя', () => {
+    expect(navPageFor('reports')).toEqual('reports');
+  });
+});