feat(web): use history routing and preserve scroll on filter changes

tests/test_web_server.py

@@ -84,6 +84,15 @@ def test_readonly_routes_and_static():
             status, _, payload = running.request("/static/../config.json")
             assert status == 404
 
+            # 伪静态前端路由：直接访问 /rank、/video/... 返回 index.html
+            for route_path in ("/rank", "/video/114775988111033", "/up/230020975", "/fans"):
+                status, route_headers, route_payload = running.request(route_path)
+                assert status == 200, route_path
+                assert "text/html" in route_headers["Content-Type"], route_path
+                assert b"<html" in route_payload.lower(), route_path
+            status, _, _ = running.request("/nope.js")
+            assert status == 404
+
             status, _, payload = running.request("/api/videos")
             assert status == 200
             items = json.loads(payload)["data"]["items"]