chore(mcp): add @rlwj-lab/opsxdb-mcp npm launcher package

Node wrapper that spawns the Go opsxdb-mcp binary (OPSXDB_MCP_BIN / PATH).
Ready for npm publish --access public (requires 2FA OTP).

packages/opsxdb-mcp/package.json

@@ -0,0 +1,29 @@
+{
+  "name": "@rlwj-lab/opsxdb-mcp",
+  "version": "0.1.0",
+  "description": "MCP server for opsxdb",
+  "main": "index.js",
+  "bin": {
+    "opsxdb-mcp": "bin/cli.js"
+  },
+  "files": [
+    "index.js",
+    "bin",
+    "dist",
+    "LICENSE",
+    "README.md"
+  ],
+  "keywords": [
+    "mcp",
+    "opsxdb",
+    "database"
+  ],
+  "license": "MIT",
+  "author": "1024way",
+  "engines": {
+    "node": ">=18"
+  },
+  "publishConfig": {
+    "access": "public"
+  }
+}