feat(native-host): kill previous instance on startup and in installers

- Add kill-previous-instance.mjs with PID lock file under BASE_DIR; on
  startup send SIGTERM to any existing native-host before binding ports
- Register removePidFile on shutdown and exit
- Run "stop any running native host" at the start of install.sh and
  install.ps1
- Use ESM with static imports so bare-pack includes the module in the
  bundle (dynamic require was not included and broke the built binary)
- Add kill-previous-instance.mjs to CI syntax check

.gitea/workflows/ci.yml

@@ -75,7 +75,7 @@ jobs:
           node --check native-host/managers/rdp-manager.js
           node --check native-host/host/messenger.js
           node --check native-host/host/paths.js
-          node --check native-host/host/kill-previous-instance.js
+          node --check native-host/host/kill-previous-instance.mjs
           node --check native-host/host/logger.js
           node --check native-host/host/startup.js
           node --check native-host/host/message-router.js

native-host/host/kill-previous-instance.mjs

@@ -1,11 +1,13 @@
 /**
  * Kill any previously running native-host instance (same installation) before
  * we bind to ports. Uses a PID file under BASE_DIR so the lock is per-install.
+ * ESM so bare-pack includes it when bundling from index.mjs.
  */
 
-const path = require('bare-path');
-const fs = require('bare-fs');
-const { BASE_DIR } = require('./paths.js');
+import path from 'bare-path';
+import fs from 'bare-fs';
+import pathsModule from './paths.js';
+const { BASE_DIR } = pathsModule;
 
 const PID_FILE = path.join(BASE_DIR, '.holesail-browser-host.pid');
 
@@ -24,7 +26,7 @@ function isProcessAlive(pid) {
  * SIGTERM. Then write our PID to the lock file. Does not wait for the old
  * process to exit.
  */
-function killPreviousInstanceSync() {
+export function killPreviousInstanceSync() {
   let existingPid = null;
   try {
     const raw = fs.readFileSync(PID_FILE, 'utf8');
@@ -43,20 +45,14 @@ function killPreviousInstanceSync() {
   writePidFile();
 }
 
-function writePidFile() {
+export function writePidFile() {
   try {
     fs.writeFileSync(PID_FILE, String(process.pid), 'utf8');
   } catch (_) {}
 }
 
-function removePidFile() {
+export function removePidFile() {
   try {
     fs.unlinkSync(PID_FILE);
   } catch (_) {}
 }
-
-module.exports = {
-  killPreviousInstanceSync,
-  writePidFile,
-  removePidFile
-};

native-host/index.mjs

@@ -14,9 +14,7 @@
 
 import 'bare-process/global';
 import './set-tmpdir.mjs';
-import { createRequire } from 'module';
-const require = createRequire(import.meta.url);
-const { killPreviousInstanceSync, removePidFile } = require('./host/kill-previous-instance.js');
+import { killPreviousInstanceSync, removePidFile } from './host/kill-previous-instance.mjs';
 import _messenger from './host/messenger.js';
 import _host from './host/message-router.js';
 

releases/holesail-browser-certs/ca.cert.pem

@@ -0,0 +1,23 @@
+-----BEGIN CERTIFICATE-----
+MIID6TCCAtGgAwIBAgIBATANBgkqhkiG9w0BAQsFADCBhjEcMBoGA1UEAxMTSG9s
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+Dw4TVzgCl2+cvESXV0rlYEMo4vN63f6BEh4T5gCn3sTqVjfR0GayMrKs4Zxx
+-----END CERTIFICATE-----

releases/holesail-browser-certs/ca.key.pem

@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIEowIBAAKCAQEAoNAGskXDXBM72JSvhQ6lTRJaELRB+t8dsyRupuBDHZYDXUd9
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+-----END RSA PRIVATE KEY-----