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/once.js

@@ -0,0 +1,6 @@
+import partial from './partial.js';
+import before from './before.js';
+
+// Returns a function that will be executed at most one time, no matter how
+// often you call it. Useful for lazy initialization.
+export default partial(before, 2);