Merge branch 'main' of http://43.140.215.244:7040/wangyukun/PRA-only-demo

src/main/capabilities/remaining-core.ts

@@ -165,7 +165,25 @@ async function captureScreen(file: string) {
   fs.mkdirSync(path.dirname(file), { recursive: true });
   await powershell(`Add-Type -AssemblyName System.Drawing;Add-Type -AssemblyName System.Windows.Forms;$bounds=[System.Windows.Forms.Screen]::PrimaryScreen.Bounds;$bitmap=New-Object System.Drawing.Bitmap $bounds.Width,$bounds.Height;$graphics=[System.Drawing.Graphics]::FromImage($bitmap);$graphics.CopyFromScreen($bounds.Location,[System.Drawing.Point]::Empty,$bounds.Size);$bitmap.Save(${psString(file)});$graphics.Dispose();$bitmap.Dispose()`);
 }
-register("Image_Base64Encode", async (_ctx, _node, args) => fs.readFileSync(path.resolve(text(args, ["path", "image"]))).toString("base64"));
+// 图片Base64编解码: 统一组件按 mode 分流（encode=图片→Base64, decode=Base64→图片）。
+// Image_Base64Decode 已隐藏进该组件，但保留注册以防旧流程直接引用旧 id。
+register("Image_Base64Encode", async (_ctx, node, args) => {
+  const mode = text(args, ["mode"], "encode");
+  if (mode === "decode") {
+    const value = text(args, ["val", "value"]).replace(/^data:[^;]+;base64,/, "");
+    if (!value.trim()) throw new RuntimeError("validation_error", "Base64编码不能为空", { nodeId: node.id, componentId: node.componentId, recommendation: "填写 base64 字符串，或用 ${变量} 引用上游编码输出" });
+    const custom = text(args, ["output"]).trim();
+    const file = custom ? path.resolve(custom) : path.resolve(process.cwd(), `image-${Date.now()}.png`);
+    fs.mkdirSync(path.dirname(file), { recursive: true });
+    fs.writeFileSync(file, Buffer.from(value, "base64"));
+    return file;
+  }
+  const imageArg = text(args, ["path", "image"]);
+  if (!imageArg.trim()) throw new RuntimeError("validation_error", "图片对象不能为空", { nodeId: node.id, componentId: node.componentId, recommendation: "填写源图片路径，或用 ${变量} 引用上游截图输出" });
+  const source = path.resolve(imageArg);
+  if (!fs.existsSync(source)) throw new RuntimeError("validation_error", `找不到图片文件：${source}`, { nodeId: node.id, componentId: node.componentId, recommendation: "确认路径正确，或先用「屏幕截图」组件生成图片" });
+  return fs.readFileSync(source).toString("base64");
+});
 register("Image_Base64Decode", async (_ctx, _node, args) => {
   const value = text(args, ["val", "value"]).replace(/^data:[^;]+;base64,/, ""); const file = path.resolve(process.cwd(), `image-${Date.now()}.png`);
   fs.mkdirSync(path.dirname(file), { recursive: true }); fs.writeFileSync(file, Buffer.from(value, "base64")); return file;