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/tailwindcss/src/util/responsive.js

@@ -0,0 +1,10 @@
+import postcss from 'postcss'
+import cloneNodes from './cloneNodes'
+
+export default function responsive(rules) {
+  return postcss
+    .atRule({
+      name: 'responsive',
+    })
+    .append(cloneNodes(Array.isArray(rules) ? rules : [rules]))
+}