Speed up Electron client packaging by filtering prebuilds

Only ship native prebuilds for the target platform/arch (~80MB instead
of ~500MB of multi-arch blobs), skip redundant GUI rebundles, cache
Electron downloads across hosts, and strip more packaging-only deps so
"Finalizing package" no longer crawls multi-hundred-MB asars six times.

scripts/make.cjs

@@ -15,7 +15,12 @@
 
 const path = require('path')
 const { spawnSync } = require('child_process')
-const { ALL_64, parseHostList, clientNpmScript } = require('./hosts.cjs')
+const {
+  ALL_64,
+  parseHostList,
+  clientNpmScript,
+  hostToElectron,
+} = require('./hosts.cjs')
 
 const root = path.resolve(__dirname, '..')
 
@@ -24,6 +29,7 @@ const CLIENT_HOSTS = parseHostList(process.env.PEARDOCK_CLIENT_HOSTS, ALL_64)
 
 function run(cmd, args, opts = {}) {
   console.log(`\n$ ${cmd} ${args.join(' ')}\n`)
+  const t0 = Date.now()
   const res = spawnSync(cmd, args, {
     cwd: root,
     stdio: 'inherit',
@@ -33,10 +39,13 @@ function run(cmd, args, opts = {}) {
   })
   if (res.error) throw res.error
   if (res.status !== 0) process.exit(res.status || 1)
+  console.log(`[make] ok in ${((Date.now() - t0) / 1000).toFixed(1)}s`)
 }
 
-function npmRun(script) {
-  run(process.platform === 'win32' ? 'npm.cmd' : 'npm', ['run', script])
+function npmRun(script, env) {
+  run(process.platform === 'win32' ? 'npm.cmd' : 'npm', ['run', script], {
+    env: env ? { ...process.env, ...env } : process.env,
+  })
 }
 
 function makeServer(hosts = SERVER_HOSTS) {
@@ -54,6 +63,7 @@ function makeServer(hosts = SERVER_HOSTS) {
 
 function makeClient(hosts = CLIENT_HOSTS) {
   console.log(`[make] client hosts: ${hosts.join(', ')}`)
+  // Build GUI bundle once; forge prePackage skips rebuild when this is set
   npmRun('build:client-bundle')
   for (const host of hosts) {
     const script = clientNpmScript(host)
@@ -61,11 +71,17 @@ function makeClient(hosts = CLIENT_HOSTS) {
       console.error(`[make] no client script for host ${host}`)
       process.exit(1)
     }
-    // Prefer prebuilds; skip native rebuild (cross-arch rebuild is slow/fails)
+    const { platform, arch } = hostToElectron(host)
+    console.log(`[make] client ${host} (filter prebuilds to ${platform}-${arch})`)
+    // Prefer prebuilds; skip native rebuild (cross-arch rebuild is slow/fails).
+    // PEARDOCK_PACKAGE_* tells forge.config to ignore foreign prebuilds (~500MB → ~30MB).
     const env = {
       ...process.env,
       npm_config_build_from_source: 'false',
       PEARDOCK_SKIP_REBUILD: process.env.PEARDOCK_SKIP_REBUILD || '1',
+      PEARDOCK_PACKAGE_PLATFORM: platform,
+      PEARDOCK_PACKAGE_ARCH: arch,
+      PEARDOCK_SKIP_PREPACKAGE_BUNDLE: '1',
     }
     run(process.platform === 'win32' ? 'npm.cmd' : 'npm', ['run', script], { env })
   }