feat(native-messaging): Add Native Messaging Host with MCP Server for external script management

packages/native-messaging-host/install.ps1

@@ -0,0 +1,30 @@
+param(
+    [string]$ExtensionId = "fomrtutthjerocmw"
+)
+
+$ErrorActionPreference = "Stop"
+$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+$distPath = Join-Path $scriptDir "dist\native-host.bat"
+
+if (-not (Test-Path $distPath)) {
+    Write-Error "Build output not found: $distPath"
+    exit 1
+}
+
+$manifestPath = Join-Path $scriptDir "manifest.json"
+$manifest = Get-Content $manifestPath -Raw | ConvertFrom-Json
+$manifest.path = $distPath
+$manifest.allowed_origins = @("chrome-extension://$ExtensionId/")
+$manifest | ConvertTo-Json -Depth 5 | Set-Content $manifestPath -Encoding UTF8
+Write-Host "[OK] manifest.json updated"
+
+$regs = @(
+    "HKCU:\Software\Google\Chrome\NativeMessagingHosts\com.scriptcat.native_host",
+    "HKCU:\Software\Microsoft\Edge\NativeMessagingHosts\com.scriptcat.native_host"
+)
+foreach ($regPath in $regs) {
+    New-Item -Path $regPath -Force | Out-Null
+    Set-ItemProperty -Path $regPath -Name "(Default)" -Value $manifestPath
+    Write-Host "[OK] Registered: $regPath"
+}
+Write-Host "Done"

packages/native-messaging-host/launch.js

@@ -0,0 +1,31 @@
+const { spawn } = require('child_process');
+const path = require('path');
+
+const scriptPath = path.join(__dirname, 'dist', 'index.js');
+const node = spawn('node', [scriptPath], {
+    stdio: ['pipe', 'pipe', 'pipe'],
+    detached: true
+});
+
+node.stderr.on('data', (data) => {
+    console.error('[NativeHost]', data.toString());
+});
+node.stdout.on('data', (data) => {
+    console.log('[NativeHost]', data.toString());
+});
+
+node.on('close', (code) => {
+    console.log(`NativeHost exited with code ${code}`);
+});
+
+// Keep stdin open by writing a dummy keepalive every 30 seconds
+setInterval(() => {
+    if (node.stdin.writable) {
+        node.stdin.write('\n');
+    }
+}, 30000);
+
+// Keep this script alive
+setInterval(() => {}, 1e9);
+console.log(`NativeHost started with PID ${node.pid}`);
+console.log('Press Ctrl+C to stop');

packages/native-messaging-host/launch.mjs

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+import { spawn } from 'node:child_process';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const scriptPath = path.join(__dirname, 'dist', 'index.js');
+
+const node = spawn('node', [scriptPath], {
+    stdio: ['pipe', 'pipe', 'pipe'],
+    detached: false
+});
+
+node.stderr.on('data', (data) => {
+    process.stderr.write(`[NH] ${data}`);
+});
+node.stdout.on('data', (data) => {
+    process.stdout.write(`[NH] ${data}`);
+});
+node.on('close', (code) => {
+    console.log(`NativeHost exited with code ${code}`);
+});
+
+// Keep stdin alive with periodic writes
+setInterval(() => {
+    if (node.stdin.writable) {
+        node.stdin.write('\n');
+    }
+}, 30000);
+
+// Keep this script alive
+setInterval(() => {}, 1e9);
+console.log(`NativeHost PID: ${node.pid}`);

packages/native-messaging-host/manifest.json

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+{
+    "name":  "com.scriptcat.native_host",
+    "description":  "ScriptCat Native Messaging Host",
+    "path":  "C:\\Users\\Administrator\\ScriptCat\\packages\\native-messaging-host\\dist\\native-host.bat",
+    "type":  "stdio",
+    "allowed_origins":  [
+                            "chrome-extension://nfeceabbbdpobdgbgpnjooobkknchemm/"
+                        ]
+}

packages/native-messaging-host/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "@scriptcat/native-messaging-host",
+  "version": "1.0.0",
+  "description": "Native Messaging Host for ScriptCat MCP/CLI integration",
+  "main": "dist/index.js",
+  "type": "module",
+  "scripts": {
+    "build": "tsc",
+    "dev": "tsc --watch",
+    "start": "node dist/index.js"
+  },
+  "dependencies": {
+    "@types/node": "^20.0.0"
+  },
+  "devDependencies": {
+    "typescript": "^5.0.0"
+  }
+}