feat(web): connect quick share flow

Signed-off-by: JustMe <mr.toing@outlook.com>

web/src/app/navigation.test.ts

@@ -0,0 +1,22 @@
+import { describe, expect, it } from 'vitest';
+
+// navigation.ts 在模块加载时读 location/window,这里只测纯函数,用最小的桩
+Object.assign(globalThis, {
+  location: { pathname: '/', origin: 'http://x' },
+  window: { addEventListener: () => {} },
+  history: { state: null },
+});
+
+const { parseRoute } = await import('./navigation');
+
+describe('parseRoute', () => {
+  it('根路径是首页', () => expect(parseRoute('/')).toEqual({ name: 'home' }));
+  it('/c/:id 是频道', () => {
+    expect(parseRoute('/c/k3Fq9xWm2LpA7sTdQ8vZ1n')).toEqual({ name: 'channel', id: 'k3Fq9xWm2LpA7sTdQ8vZ1n' });
+  });
+  it('/s/:id 是便捷分享', () => {
+    expect(parseRoute('/s/k3Fq9xWm2LpA7sTdQ8vZ1n')).toEqual({ name: 'share', id: 'k3Fq9xWm2LpA7sTdQ8vZ1n' });
+  });
+  it('id 格式不对回到首页', () => expect(parseRoute('/c/short')).toEqual({ name: 'home' }));
+  it('未知路径回到首页', () => expect(parseRoute('/other')).toEqual({ name: 'home' }));
+});