Workers P2: Prüfstand mit Skript-API und Playwright-Abnahme

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

scripts/workers-harness/build.mjs

@@ -0,0 +1,46 @@
+// Baut den Prüfstand: node scripts/workers-harness/build.mjs <outDir>
+// entry.jsx -> harness.js + harness.css (esbuild, Entwicklungsmodus, damit StrictMode wie in der Entwicklung zweimal einhängt), dazu index.html.
+// outDir muss ein neuer oder leerer Ordner unter dem Temp-Ordner (TMPDIR, sonst /tmp) oder unter .superpowers/ im Repo sein.
+// Die Schrift /fonts/* bleibt außen vor: der Server von shot.cjs liefert sie aus public/fonts.
+import esbuild from 'esbuild'
+import fs from 'node:fs'
+import os from 'node:os'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+const here = path.dirname(fileURLToPath(import.meta.url))
+const repo = path.resolve(here, '../..')
+
+const arg = process.argv[2]
+if (!arg) {
+  console.error('usage: node scripts/workers-harness/build.mjs <outDir>')
+  process.exit(2)
+}
+const out = path.resolve(arg)
+const tmp = path.resolve(process.env.TMPDIR || os.tmpdir())
+const allowed = [tmp, path.join(repo, '.superpowers')]
+if (!allowed.some((base) => out.startsWith(base + path.sep))) {
+  console.error(`refusing: outDir must be below ${allowed.join(' or ')}`)
+  process.exit(2)
+}
+if (fs.existsSync(out) && fs.readdirSync(out).length > 0) {
+  console.error('refusing: outDir must be new or empty')
+  process.exit(2)
+}
+fs.mkdirSync(out, { recursive: true })
+
+const result = await esbuild.build({
+  entryPoints: [path.join(here, 'entry.jsx')],
+  outfile: path.join(out, 'harness.js'),
+  bundle: true,
+  format: 'iife',
+  platform: 'browser',
+  jsx: 'automatic',
+  external: ['/fonts/*'],
+  define: { 'process.env.NODE_ENV': '"development"' },
+  logLevel: 'warning',
+  metafile: true,
+})
+fs.copyFileSync(path.join(here, 'index.html'), path.join(out, 'index.html'))
+const sizes = Object.entries(result.metafile.outputs).map(([file, info]) => `${path.basename(file)} ${info.bytes}`)
+console.log(`built ${sizes.join(', ')} -> ${out}`)