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/@modelcontextprotocol/sdk/dist/cjs/server/completable.js

@@ -0,0 +1,48 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.McpZodTypeKind = exports.COMPLETABLE_SYMBOL = void 0;
+exports.completable = completable;
+exports.isCompletable = isCompletable;
+exports.getCompleter = getCompleter;
+exports.unwrapCompletable = unwrapCompletable;
+exports.COMPLETABLE_SYMBOL = Symbol.for('mcp.completable');
+/**
+ * Wraps a Zod type to provide autocompletion capabilities. Useful for, e.g., prompt arguments in MCP.
+ * Works with both Zod v3 and v4 schemas.
+ */
+function completable(schema, complete) {
+    Object.defineProperty(schema, exports.COMPLETABLE_SYMBOL, {
+        value: { complete },
+        enumerable: false,
+        writable: false,
+        configurable: false
+    });
+    return schema;
+}
+/**
+ * Checks if a schema is completable (has completion metadata).
+ */
+function isCompletable(schema) {
+    return !!schema && typeof schema === 'object' && exports.COMPLETABLE_SYMBOL in schema;
+}
+/**
+ * Gets the completer callback from a completable schema, if it exists.
+ */
+function getCompleter(schema) {
+    const meta = schema[exports.COMPLETABLE_SYMBOL];
+    return meta?.complete;
+}
+/**
+ * Unwraps a completable schema to get the underlying schema.
+ * For backward compatibility with code that called `.unwrap()`.
+ */
+function unwrapCompletable(schema) {
+    return schema;
+}
+// Legacy exports for backward compatibility
+// These types are deprecated but kept for existing code
+var McpZodTypeKind;
+(function (McpZodTypeKind) {
+    McpZodTypeKind["Completable"] = "McpCompletable";
+})(McpZodTypeKind || (exports.McpZodTypeKind = McpZodTypeKind = {}));
+//# sourceMappingURL=completable.js.map