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/fast-glob/out/utils/string.js

@@ -0,0 +1,11 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.isEmpty = exports.isString = void 0;
+function isString(input) {
+    return typeof input === 'string';
+}
+exports.isString = isString;
+function isEmpty(input) {
+    return input === '';
+}
+exports.isEmpty = isEmpty;