feat: add screenshots

bs-config.cjs

@@ -1,5 +1,6 @@
 const fs = require('fs');
 const path = require('path');
+const { execFile } = require('child_process');
 
 module.exports = {
   server: {
@@ -17,6 +18,17 @@ module.exports = {
   notify: false,
   ui: false,
   middleware: [
+    {
+      route: "/",
+      handle: function (req, res, next) {
+        if (req.url === '/' || req.url === '') {
+          res.writeHead(302, { 'Location': '/tasks/index.html' });
+          res.end();
+          return;
+        }
+        next();
+      }
+    },
     {
       route: "/api/save-edits",
       handle: function (req, res, next) {
@@ -56,6 +68,15 @@ module.exports = {
             const diff = computeDiff(oldData, data, docId);
             fs.writeFileSync(diffPath, JSON.stringify(diff, null, 2));
 
+            // Run generate.mjs → output.html + screenshots (async, don't block response)
+            const generateScript = path.join(__dirname, 'tasks', taskType, 'scripts', 'generate.mjs');
+            if (fs.existsSync(generateScript)) {
+              execFile('node', [generateScript, docId], { timeout: 60000 }, (err, stdout, stderr) => {
+                if (err) console.error(`[generate] ${taskType}/${docId} failed:`, stderr || err.message);
+                else console.log(`[generate] ${stdout.trim()}`);
+              });
+            }
+
             res.writeHead(200, { 'Content-Type': 'application/json' });
             res.end(JSON.stringify({ ok: true, path: dataPath }));
           } catch (e) {