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/isURLSameOrigin.js

@@ -0,0 +1,14 @@
+import platform from '../platform/index.js';
+
+export default platform.hasStandardBrowserEnv ? ((origin, isMSIE) => (url) => {
+  url = new URL(url, platform.origin);
+
+  return (
+    origin.protocol === url.protocol &&
+    origin.host === url.host &&
+    (isMSIE || origin.port === url.port)
+  );
+})(
+  new URL(platform.origin),
+  platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent)
+) : () => true;