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/socket.io-client/build/esm/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "socket.io-client",
+  "version": "4.8.3",
+  "type": "module"
+}