fix: serve quartz with clean URL support and regenerate site

- Add serve.py to resolve clean Quartz URLs to .html files
- Regenerate Quartz site with correct baseUrl http://100.118.5.51:9120
- 196 HTML files emitted; all internal links now resolve

node_modules/underscore/modules/_has.js

@@ -0,0 +1,6 @@
+import { hasOwnProperty } from './_setup.js';
+
+// Internal function to check whether `key` is an own property name of `obj`.
+export default function has(obj, key) {
+  return obj != null && hasOwnProperty.call(obj, key);
+}