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/amd/constant.js

@@ -0,0 +1,12 @@
+define(function () {
+
+  // Predicate-generating function. Often useful outside of Underscore.
+  function constant(value) {
+    return function() {
+      return value;
+    };
+  }
+
+  return constant;
+
+});