chore(mcp): include resolve-binary.js in npm package

Root .gitignore ignores dist/; force-add so the launcher ships complete.

packages/opsxdb-mcp/dist/resolve-binary.js

@@ -0,0 +1,92 @@
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const os = require('os');
+
+/**
+ * Resolve the OpsxDB Go MCP binary path.
+ * Order: OPSXDB_MCP_BIN → PATH → common install locations.
+ * @returns {string|null}
+ */
+function resolveBinary() {
+  const envBin = process.env.OPSXDB_MCP_BIN;
+  if (envBin && isExecutable(envBin)) return path.resolve(envBin);
+
+  const onPath = findOnPath('opsxdb-mcp');
+  if (onPath) return onPath;
+
+  const home = os.homedir();
+  const candidates = [
+    path.join(home, 'devops', 'opsxdb', 'bin', 'opsxdb-mcp'),
+    path.join(home, '.opsxdb', 'bin', 'opsxdb-mcp'),
+    path.join(home, '.local', 'bin', 'opsxdb-mcp'),
+    '/usr/local/bin/opsxdb-mcp',
+    '/opt/homebrew/bin/opsxdb-mcp',
+  ];
+  for (const c of candidates) {
+    if (isExecutable(c)) return c;
+  }
+  return null;
+}
+
+function findOnPath(name) {
+  const pathEnv = process.env.PATH || '';
+  for (const dir of pathEnv.split(path.delimiter)) {
+    if (!dir) continue;
+    const p = path.join(dir, name);
+    if (isExecutable(p)) return p;
+    if (process.platform === 'win32' && isExecutable(p + '.exe')) return p + '.exe';
+  }
+  return null;
+}
+
+function isExecutable(filePath) {
+  try {
+    const st = fs.statSync(filePath);
+    if (!st.isFile()) return false;
+    fs.accessSync(filePath, fs.constants.X_OK);
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+function missingBinaryMessage() {
+  return `opsxdb-mcp: Go binary not found.
+
+This npm package (@rlwj-lab/opsxdb-mcp) is a Node launcher for the OpsxDB
+MCP server (stdio). The real server is a Go binary named opsxdb-mcp.
+
+Build it from the opsxdb repo:
+
+  cd server && go build -o ../bin/opsxdb-mcp ./cmd/opsxdb-mcp
+
+Then either:
+  - put bin/opsxdb-mcp on your PATH, or
+  - export OPSXDB_MCP_BIN=/absolute/path/to/opsxdb-mcp
+
+Cursor / Claude Desktop example:
+
+  {
+    "mcpServers": {
+      "opsxdb": {
+        "command": "npx",
+        "args": ["-y", "@rlwj-lab/opsxdb-mcp"],
+        "env": {
+          "OPSXDB_MCP_BIN": "/absolute/path/to/opsxdb-mcp"
+        }
+      }
+    }
+  }
+
+Config files (same as native binary):
+  ~/.opsxdb/mcp.json
+  ~/.opsxdb/connections.json
+`;
+}
+
+module.exports = {
+  resolveBinary,
+  missingBinaryMessage,
+};