feat: 同步全部系统改动与文档

work/system-manual/render-pdf-page.js

@@ -0,0 +1,34 @@
+const fs = require('fs')
+const path = require('path')
+const { createCanvas, DOMMatrix, ImageData, Path2D } = require('@napi-rs/canvas')
+
+global.DOMMatrix = DOMMatrix
+global.ImageData = ImageData
+global.Path2D = Path2D
+if (!process.getBuiltinModule) process.getBuiltinModule = name => require(name)
+
+async function main() {
+  const pdfjs = await import('pdfjs-dist/legacy/build/pdf.mjs')
+  const root = path.resolve(__dirname, '..', '..')
+  const pdfPath = path.resolve(root, 'doc', '大连元利流体技术有限公司MES系统用户操作手册_V1.1_2026-07-23.pdf')
+  const pageNumber = Number(process.argv[2] || 1)
+  const outputPath = path.resolve(__dirname, `pdf-page-${pageNumber}.png`)
+  const task = pdfjs.getDocument({ data: new Uint8Array(fs.readFileSync(pdfPath)), disableWorker: true })
+  const pdf = await task.promise
+  if (pageNumber < 1 || pageNumber > pdf.numPages) throw new Error(`Page ${pageNumber} is outside 1-${pdf.numPages}`)
+  const page = await pdf.getPage(pageNumber)
+  const viewport = page.getViewport({ scale: 1.5 })
+  const canvas = createCanvas(Math.ceil(viewport.width), Math.ceil(viewport.height))
+  const context = canvas.getContext('2d')
+  context.fillStyle = '#ffffff'
+  context.fillRect(0, 0, canvas.width, canvas.height)
+  await page.render({ canvasContext: context, viewport }).promise
+  fs.writeFileSync(outputPath, canvas.toBuffer('image/png'))
+  console.log(`PDF pages: ${pdf.numPages}`)
+  console.log(`Rendered: ${outputPath}`)
+}
+
+main().catch(error => {
+  console.error(error.stack || error.message)
+  process.exitCode = 1
+})