feat: rebuild portable auto-update flow

scripts/compile-updater.js

@@ -0,0 +1,57 @@
+#!/usr/bin/env node
+
+const fs = require('fs')
+const path = require('path')
+const { spawnSync } = require('child_process')
+
+const rootDir = process.cwd()
+const sourcePath = path.join(rootDir, 'build', 'PortableUpdater.cs')
+const outputDir = path.join(rootDir, 'build', 'bin')
+const outputPath = path.join(outputDir, 'portable-updater.exe')
+
+function findCompiler() {
+  const candidates = [
+    'C:\\Windows\\Microsoft.NET\\Framework64\\v4.0.30319\\csc.exe',
+    'C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\csc.exe'
+  ]
+
+  return candidates.find((candidate) => fs.existsSync(candidate)) || null
+}
+
+function main() {
+  if (process.platform !== 'win32') {
+    console.log('Skipping updater compilation on non-Windows platform.')
+    return
+  }
+
+  if (!fs.existsSync(sourcePath)) {
+    throw new Error(`Updater source not found: ${sourcePath}`)
+  }
+
+  const compiler = findCompiler()
+  if (!compiler) {
+    throw new Error('Unable to find csc.exe for compiling portable-updater.exe')
+  }
+
+  fs.mkdirSync(outputDir, { recursive: true })
+
+  const compileArgs = ['/nologo', '/target:exe', '/optimize+', `/out:${outputPath}`, sourcePath]
+
+  const result = spawnSync(compiler, compileArgs, {
+    cwd: rootDir,
+    stdio: 'inherit'
+  })
+
+  if (result.status !== 0) {
+    throw new Error(`csc.exe failed with exit code ${result.status}`)
+  }
+
+  console.log(`Portable updater compiled successfully: ${outputPath}`)
+}
+
+try {
+  main()
+} catch (error) {
+  console.error(`compile-updater failed: ${error.message}`)
+  process.exit(1)
+}