build: PaddedCell-style install.mjs + SDK-aligned packaging

install.mjs (--install/--build-only/--uninstall/--openclaw-profile-path),
tsconfig outDir dist/fabric, package.json openclaw file dep + main.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

node_modules/engine.io-client/build/cjs/transports/index.js

@@ -0,0 +1,11 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.transports = void 0;
+const polling_xhr_node_js_1 = require("./polling-xhr.node.js");
+const websocket_node_js_1 = require("./websocket.node.js");
+const webtransport_js_1 = require("./webtransport.js");
+exports.transports = {
+    websocket: websocket_node_js_1.WS,
+    webtransport: webtransport_js_1.WT,
+    polling: polling_xhr_node_js_1.XHR,
+};