feat(packaging): Add npm packaging and installer: wrapper, postinstall downloader, publish workflow, and packaging files

package.json

@@ -0,0 +1,62 @@
+{
+  "name": "@serve.zone/nupst",
+  "version": "5.0.5",
+  "description": "Network UPS Shutdown Tool - Monitor SNMP-enabled UPS devices and orchestrate graceful system shutdowns during power emergencies",
+  "keywords": [
+    "ups",
+    "snmp",
+    "power",
+    "shutdown",
+    "monitoring",
+    "cyberpower",
+    "apc",
+    "eaton",
+    "tripplite",
+    "liebert",
+    "vertiv",
+    "battery",
+    "backup"
+  ],
+  "homepage": "https://code.foss.global/serve.zone/nupst",
+  "bugs": {
+    "url": "https://code.foss.global/serve.zone/nupst/issues"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://code.foss.global/serve.zone/nupst.git"
+  },
+  "author": "Serve Zone",
+  "license": "MIT",
+  "type": "module",
+  "bin": {
+    "nupst": "./bin/nupst-wrapper.js"
+  },
+  "scripts": {
+    "postinstall": "node scripts/install-binary.js",
+    "prepublishOnly": "echo 'Publishing NUPST binaries to npm...'",
+    "test": "echo 'Tests are run with Deno: deno task test'"
+  },
+  "files": [
+    "bin/",
+    "scripts/install-binary.js",
+    "readme.md",
+    "license",
+    "changelog.md"
+  ],
+  "engines": {
+    "node": ">=14.0.0"
+  },
+  "os": [
+    "darwin",
+    "linux",
+    "win32"
+  ],
+  "cpu": [
+    "x64",
+    "arm64"
+  ],
+  "publishConfig": {
+    "access": "public",
+    "registry": "https://registry.npmjs.org/"
+  }
+}