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/lastIndexOf.js

@@ -0,0 +1,6 @@
+import findLastIndex from './findLastIndex.js';
+import createIndexFinder from './_createIndexFinder.js';
+
+// Return the position of the last occurrence of an item in an array,
+// or -1 if the item is not included in the array.
+export default createIndexFinder(-1, findLastIndex);