use non-zero injection point for 'start of script array'. clean up module loading a bit

src/main/kiri.js

@@ -5,11 +5,21 @@
 (function () {
 
     if (!self.kiri) {
+        let modfns = self.kirimod = [];
+
         let kiri = self.kiri = {
             beta: 3301,
             driver: {}, // driver modules
-            loader: [], // module loading: array of functions
-            load: (fn) => kiri.loader.push(fn)
+            loader: modfns, // module loading: array of functions
+            load(fn) {
+                kiri.loader.push(fn);
+            },
+            load_exec() {
+                // complete module loading
+                modfns.forEach(modfn => { modfn(kiri.api)} );
+                // rewrite load() to be immediate post-finalize
+                kiri.load = (modfn) => { modfn(kiri.api) };
+            }
         };
     }