fix: keep event loop alive for mcp-proxy ping, update MCP protocol version

- Add process.stdin.resume() to prevent premature Node.js exit
- Update protocolVersion to 2025-03-26
- Add stdin error handler for graceful shutdown
- Bump v0.5.14

Author: jnMetaCode

package.json

@@ -1,6 +1,6 @@
 {
   "name": "shellward",
-  "version": "0.5.13",
+  "version": "0.5.14",
   "mcpName": "io.github.jnMetaCode/shellward",
   "description": "AI agent security & MCP security middleware — prompt injection detection, AI firewall, runtime guardrails & data-loss prevention for LLM tool calls. 8-layer defense against data exfiltration & dangerous commands. Zero dependencies. SDK + OpenClaw plugin. Supports LangChain, AutoGPT, Claude Code, Cursor, OpenAI Agents.",
   "keywords": [

server.json

@@ -6,12 +6,12 @@
     "url": "https://github.com/jnMetaCode/shellward",
     "source": "github"
   },
-  "version": "0.5.13",
+  "version": "0.5.14",
   "packages": [
     {
       "registryType": "npm",
       "identifier": "shellward",
-      "version": "0.5.13",
+      "version": "0.5.14",
       "runtime": "node",
       "transport": {
         "type": "stdio"

src/mcp-server.ts

@@ -254,7 +254,7 @@ function handleRequest(req: JsonRpcRequest): JsonRpcResponse | null {
         jsonrpc: '2.0',
         id: id ?? null,
         result: {
-          protocolVersion: '2024-11-05',
+          protocolVersion: '2025-03-26',
           capabilities: { tools: {} },
           serverInfo: {
             name: 'shellward',
@@ -337,6 +337,9 @@ function handleRequest(req: JsonRpcRequest): JsonRpcResponse | null {
 
 let rawBuffer = Buffer.alloc(0)
 
+// Keep event loop alive — prevent Node.js from exiting before mcp-proxy connects
+process.stdin.resume()
+
 process.stdin.on('data', (chunk: Buffer) => {
   rawBuffer = Buffer.concat([rawBuffer, chunk])
 
@@ -381,6 +384,7 @@ function send(msg: JsonRpcResponse) {
 }
 
 process.stdin.on('end', () => process.exit(0))
+process.stdin.on('error', () => process.exit(1))
 
 // Log to stderr so it doesn't interfere with stdio protocol
 process.stderr.write(`[ShellWard MCP] Server started (mode: ${guard.config.mode}, locale: ${guard.locale})\n`)