feat: robust metric extraction with confidence score and proof snippets

- fixed Year-Prefix Bug in MetricParser
- added metric_confidence and metric_proof_text to database
- added Entity-Check and Annual-Priority to LLM prompt
- improved UI: added confidence traffic light and mouse-over proof tooltip
- restored missing API endpoints (create, bulk, wiki-override)

company-explorer/frontend/node_modules/axios/lib/helpers/callbackify.js

@@ -0,0 +1,16 @@
+import utils from "../utils.js";
+
+const callbackify = (fn, reducer) => {
+  return utils.isAsyncFn(fn) ? function (...args) {
+    const cb = args.pop();
+    fn.apply(this, args).then((value) => {
+      try {
+        reducer ? cb(null, ...reducer(value)) : cb(null, value);
+      } catch (err) {
+        cb(err);
+      }
+    }, cb);
+  } : fn;
+}
+
+export default callbackify;