Add settings page for managing forecasting API key and URL via UI

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/node_modules/is-regexp/package.json

@@ -0,0 +1,35 @@
+{
+  "name": "is-regexp",
+  "version": "1.0.0",
+  "description": "Check whether a variable is a regular expression",
+  "license": "MIT",
+  "repository": "sindresorhus/is-regexp",
+  "author": {
+    "name": "Sindre Sorhus",
+    "email": "sindresorhus@gmail.com",
+    "url": "http://sindresorhus.com"
+  },
+  "engines": {
+    "node": ">=0.10.0"
+  },
+  "scripts": {
+    "test": "mocha"
+  },
+  "files": [
+    "index.js"
+  ],
+  "keywords": [
+    "regex",
+    "regexp",
+    "regular",
+    "expression",
+    "regular expression",
+    "re",
+    "check",
+    "type",
+    "is"
+  ],
+  "devDependencies": {
+    "mocha": "*"
+  }
+}