feat(API-11): Route API calls through AgilitonAPI gateway

Add gateway-first pattern: when AGILITON_API_KEY is set, route all
external API calls through the gateway with X-API-Key auth. Falls back
to direct API access when gateway is unavailable.

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

node_modules/inherits/package.json

@@ -0,0 +1,29 @@
+{
+  "name": "inherits",
+  "description": "Browser-friendly inheritance fully compatible with standard node.js inherits()",
+  "version": "2.0.4",
+  "keywords": [
+    "inheritance",
+    "class",
+    "klass",
+    "oop",
+    "object-oriented",
+    "inherits",
+    "browser",
+    "browserify"
+  ],
+  "main": "./inherits.js",
+  "browser": "./inherits_browser.js",
+  "repository": "git://github.com/isaacs/inherits",
+  "license": "ISC",
+  "scripts": {
+    "test": "tap"
+  },
+  "devDependencies": {
+    "tap": "^14.2.4"
+  },
+  "files": [
+    "inherits.js",
+    "inherits_browser.js"
+  ]
+}