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/ajv/dist/vocabularies/applicator/thenElse.js

@@ -0,0 +1,13 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const util_1 = require("../../compile/util");
+const def = {
+    keyword: ["then", "else"],
+    schemaType: ["object", "boolean"],
+    code({ keyword, parentSchema, it }) {
+        if (parentSchema.if === undefined)
+            (0, util_1.checkStrictMode)(it, `"${keyword}" without "if" is ignored`);
+    },
+};
+exports.default = def;
+//# sourceMappingURL=thenElse.js.map