Add status progress for batch tool operations

src/tools/applovinUpload.ts

@@ -134,11 +134,11 @@ async function handleUpload(panel: vscode.WebviewPanel, filePaths: string[]) {
     if (!/\.html?$/i.test(filePath)) { reportError('Must be .html'); continue; }
 
     if (i > 0 && delayMs > 0) {
-      panel.webview.postMessage({ type: 'status', message: `[${idx}/${paths.length}] Waiting ${delayMs}ms before ${fileName}...` });
+      panel.webview.postMessage({ type: 'status', message: `Waiting ${idx}/${paths.length} ${fileName}` });
       await sleep(delayMs);
     }
 
-    panel.webview.postMessage({ type: 'status', message: `[${idx}/${paths.length}] Validating ${fileName}...` });
+    panel.webview.postMessage({ type: 'status', message: `Validating ${idx}/${paths.length} ${fileName}` });
 
     let res: Response;
     try {
@@ -154,7 +154,7 @@ async function handleUpload(panel: vscode.WebviewPanel, filePaths: string[]) {
       reportError(`Validation failed: ${validateText.slice(0, 300)}`); continue;
     }
 
-    panel.webview.postMessage({ type: 'status', message: `[${idx}/${paths.length}] Uploading ${fileName}...` });
+    panel.webview.postMessage({ type: 'status', message: `Uploading ${idx}/${paths.length} ${fileName}` });
 
     try {
       res = await fetch('https://p.applov.in/getCachedAdURL', {

src/tools/base64Scanner.ts

@@ -58,7 +58,9 @@ export function openBase64Scanner(_context: vscode.ExtensionContext) {
         return;
       }
       const results: { file: string; ok: boolean; assets: string[] }[] = [];
-      for (const file of targets) {
+      for (let i = 0; i < targets.length; i++) {
+        const file = targets[i];
+        panel.webview.postMessage({ type: 'status', message: `Scanning ${i + 1}/${targets.length} ${path.basename(file)}` });
         try {
           const content = fs.readFileSync(file, 'utf8');
           const offenders = findNonBase64Assets(content);
@@ -312,6 +314,9 @@ ${getToolWebviewStyles()}
       pickedFolder = '';
       selectedPage = Math.max(0, Math.ceil(pickedFiles.length / PAGE_SIZE) - 1);
       renderSelection();
+    } else if (msg.type === 'status') {
+      statusEl.textContent = msg.message;
+      statusEl.className = 'status-panel is-busy';
     } else if (msg.type === 'results') {
       if (msg.error) {
         statusEl.classList.remove('is-busy');

src/tools/mraidChecker.ts

@@ -116,7 +116,9 @@ export function openMraidChecker(_context: vscode.ExtensionContext) {
       }
 
       const results: MraidResult[] = [];
-      for (const file of targets) {
+      for (let i = 0; i < targets.length; i++) {
+        const file = targets[i];
+        panel.webview.postMessage({ type: 'status', message: `Scanning ${i + 1}/${targets.length} ${path.basename(file)}` });
         try {
           const content = fs.readFileSync(file, 'utf8');
           const issues = checkMraid(content, file);
@@ -829,6 +831,9 @@ ${getToolWebviewStyles()}
       pickedFolder = '';
       selectedPage = Math.max(0, Math.ceil(pickedFiles.length / PAGE_SIZE) - 1);
       renderSelection();
+    } else if (msg.type === 'status') {
+      statusEl.textContent = msg.message;
+      statusEl.className = 'status-panel is-busy';
     } else if (msg.type === 'results') {
       if (msg.error) {
         statusEl.classList.remove('is-busy');

src/tools/playworksConverter.ts

@@ -68,6 +68,7 @@ export function openPlayworksConverter(_context: vscode.ExtensionContext) {
 
         let html: string;
         try {
+          panel.webview.postMessage({ type: 'status', message: 'Reading source HTML...' });
           html = fs.readFileSync(opts.sourcePath, 'utf8');
         } catch (e: any) {
           panel.webview.postMessage({ type: 'convertDone', results: [], error: `Could not read source: ${e.message}` });
@@ -76,11 +77,14 @@ export function openPlayworksConverter(_context: vscode.ExtensionContext) {
 
         const results: NetworkResult[] = [];
         try {
+          panel.webview.postMessage({ type: 'status', message: 'Converting Unity...' });
           results.push({ network: 'un', file: copyUnityInput(opts), ok: true });
         } catch (e: any) {
           results.push({ network: 'un', file: '', ok: false, error: e.message });
         }
-        for (const network of opts.networks) {
+        for (let i = 0; i < opts.networks.length; i++) {
+          const network = opts.networks[i];
+          panel.webview.postMessage({ type: 'status', message: `Converting ${i + 1}/${opts.networks.length} ${network}` });
           try {
             const filePath = await convertNetwork(html, opts, network);
             results.push({ network, file: filePath, ok: true });
@@ -600,6 +604,9 @@ ${getToolWebviewStyles()}
       outEl.value = msg.path;
       outputDir = msg.path;
       updateConvertBtn();
+    } else if (msg.type === 'status') {
+      statusEl.textContent = msg.message;
+      statusEl.className = 'status-panel is-busy';
     } else if (msg.type === 'convertDone') {
       convertBtn.disabled = false;
       updateConvertBtn();

src/tools/plecUpload.ts

@@ -101,11 +101,13 @@ async function handleUpload(panel: vscode.WebviewPanel, rows: UploadRow[]) {
   for (let i = 0; i < valid.length; i++) {
     const r = valid[i];
     const idx = i + 1;
+    panel.webview.postMessage({ type: 'status', message: `Preparing ${idx}/${valid.length} ${path.basename(r.path)}` });
     const buf = fs.readFileSync(r.path);
     const file = new File([buf], stampedNames[i], { type: 'text/html' });
     form.append(`fileUpload_${idx}`, file as any);
     form.append(`iterationNameUpload_${idx}`, encodeURI(r.iteration.replace(/\s+/g, '')));
   }
+  panel.webview.postMessage({ type: 'status', message: `Uploading ${valid.length} file${valid.length === 1 ? '' : 's'}...` });
 
   let res: Response;
   try {

src/tools/sendToMobile.ts

@@ -103,13 +103,16 @@ export function openSendToMobile(context: vscode.ExtensionContext) {
           return;
         }
         const files: SharedFile[] = [];
-        for (const filePath of filePaths) {
+        for (let i = 0; i < filePaths.length; i++) {
+          const filePath = filePaths[i];
           if (!filePath || !fs.existsSync(filePath)) {
             panel.webview.postMessage({ type: 'error', message: 'File missing.' });
             return;
           }
+          panel.webview.postMessage({ type: 'status', message: `Loading ${i + 1}/${filePaths.length} ${path.basename(filePath)}` });
           files.push({ buf: fs.readFileSync(filePath), filename: path.basename(filePath) });
         }
+        panel.webview.postMessage({ type: 'status', message: 'Starting server...' });
         const token = crypto.randomBytes(6).toString('base64url');
 
         const cfg = vscode.workspace.getConfiguration('hplToolbox.sendToMobile');
@@ -549,6 +552,9 @@ ${getToolWebviewStyles()}
       selectedPaths = selectedFiles.map(f => f.path);
       selectedPage = 0;
       renderSelection();
+    } else if (m.type === 'status') {
+      statusEl.textContent = m.message;
+      statusEl.className = 'status-panel is-busy';
     } else if (m.type === 'sharing') {
       statusEl.classList.remove('is-busy');
       currentUrls = m.urls;

standalone/applovin.go

@@ -451,11 +451,11 @@ func ApplovinUpload(w http.ResponseWriter, r *http.Request) {
 		}
 
 		if i > 0 && delayMs > 0 {
-			send(map[string]any{"type": "status", "message": fmt.Sprintf("[%d/%d] Waiting %dms before %s...", idx, len(req.Paths), delayMs, fileName)})
+			send(map[string]any{"type": "status", "message": fmt.Sprintf("Waiting %d/%d %s", idx, len(req.Paths), fileName)})
 			time.Sleep(time.Duration(delayMs) * time.Millisecond)
 		}
 
-		send(map[string]any{"type": "status", "message": fmt.Sprintf("[%d/%d] Validating %s...", idx, len(req.Paths), fileName)})
+		send(map[string]any{"type": "status", "message": fmt.Sprintf("Validating %d/%d %s", idx, len(req.Paths), fileName)})
 
 		body, ct, err := buildForm(filePath)
 		if err != nil {
@@ -480,7 +480,7 @@ func ApplovinUpload(w http.ResponseWriter, r *http.Request) {
 			}
 		}
 
-		send(map[string]any{"type": "status", "message": fmt.Sprintf("[%d/%d] Uploading %s...", idx, len(req.Paths), fileName)})
+		send(map[string]any{"type": "status", "message": fmt.Sprintf("Uploading %d/%d %s", idx, len(req.Paths), fileName)})
 
 		body, ct, err = buildForm(filePath)
 		if err != nil {

standalone/base64.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"encoding/json"
+	"fmt"
 	"io/fs"
 	"net/http"
 	"os"
@@ -89,6 +90,24 @@ function addPaths(paths) {
   selectedPage = Math.max(0, Math.ceil(pickedFiles.length / PAGE_SIZE) - 1);
   renderSelection();
 }
+async function readJSONStream(response, handle) {
+  if (!response.ok || !response.body) throw new Error('Request failed.');
+  const reader = response.body.getReader();
+  const decoder = new TextDecoder();
+  let buffer = '';
+  while (true) {
+    const { value, done } = await reader.read();
+    if (done) break;
+    buffer += decoder.decode(value, { stream: true });
+    let newline;
+    while ((newline = buffer.indexOf('\n')) >= 0) {
+      const line = buffer.slice(0, newline);
+      buffer = buffer.slice(newline + 1);
+      if (line.trim()) handle(JSON.parse(line));
+    }
+  }
+  if (buffer.trim()) handle(JSON.parse(buffer));
+}
 renderSelection();
 setupDropZone('dropZone', statusEl, (j) => {
   addPaths(j.paths || []);
@@ -119,8 +138,25 @@ document.getElementById('scan').addEventListener('click', async () => {
   resultsEl.innerHTML = '';
   if (!pickedFiles.length) { statusEl.classList.remove('is-busy'); statusEl.textContent = 'Pick files first.'; return; }
   const payload = { files: pickedFiles };
-  const r = await fetch('/api/base64/scan', { method:'POST', headers:{'Content-Type':'application/json'}, body: JSON.stringify(payload) });
+  let j = null;
-  const j = await r.json();
+  try {
+    const r = await fetch('/api/base64/scan', { method:'POST', headers:{'Content-Type':'application/json'}, body: JSON.stringify(payload) });
+    await readJSONStream(r, (msg) => {
+      if (msg.type === 'status') {
+        statusEl.textContent = msg.message;
+        statusEl.classList.add('is-busy');
+      } else if (msg.type === 'done') {
+        j = msg;
+      } else if (msg.type === 'error') {
+        j = { error: msg.message };
+      }
+    });
+  } catch (e) {
+    statusEl.classList.remove('is-busy');
+    statusEl.textContent = 'Error: ' + (e.message || e);
+    return;
+  }
+  if (!j) { statusEl.classList.remove('is-busy'); statusEl.textContent = 'Error: No response.'; return; }
   if (j.error) { statusEl.classList.remove('is-busy'); statusEl.textContent = 'Error: ' + j.error; return; }
   const total = j.results.length;
   const flagged = j.results.filter(r => !r.ok).length;
@@ -168,12 +204,13 @@ type scanResult struct {
 }
 
 func Base64Scan(w http.ResponseWriter, r *http.Request) {
+	send := newJSONStream(w)
 	var req struct {
 		Folder string   `json:"folder"`
 		Files  []string `json:"files"`
 	}
 	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
-		writeJSON(w, map[string]any{"results": []scanResult{}, "error": err.Error()})
+		send(map[string]any{"type": "error", "message": err.Error()})
 		return
 	}
 
@@ -193,12 +230,13 @@ func Base64Scan(w http.ResponseWriter, r *http.Request) {
 		targets = collectHTMLFiles(req.Folder)
 		baseDir = req.Folder
 	} else {
-		writeJSON(w, map[string]any{"results": []scanResult{}, "error": "Pick a folder or files first"})
+		send(map[string]any{"type": "error", "message": "Pick a folder or files first"})
 		return
 	}
 
 	results := []scanResult{}
-	for _, file := range targets {
+	for i, file := range targets {
+		send(map[string]any{"type": "status", "message": fmt.Sprintf("Scanning %d/%d %s", i+1, len(targets), filepath.Base(file))})
 		data, err := os.ReadFile(file)
 		if err != nil {
 			continue
@@ -219,7 +257,7 @@ func Base64Scan(w http.ResponseWriter, r *http.Request) {
 			Assets: offenders,
 		})
 	}
-	writeJSON(w, map[string]any{"results": results})
+	send(map[string]any{"type": "done", "results": results})
 }
 
 func commonBaseDir(files []string) string {

standalone/json.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"encoding/json"
+	"fmt"
 	"net/http"
 )
 
@@ -9,3 +10,27 @@ func writeJSON(w http.ResponseWriter, v any) {
 	w.Header().Set("Content-Type", "application/json")
 	_ = json.NewEncoder(w).Encode(v)
 }
+
+func newJSONStream(w http.ResponseWriter) func(any) {
+	w.Header().Set("Content-Type", "application/x-ndjson; charset=utf-8")
+	w.Header().Set("Cache-Control", "no-cache")
+	flusher, _ := w.(http.Flusher)
+	return func(v any) {
+		data, err := json.Marshal(v)
+		if err != nil {
+			data = []byte(fmt.Sprintf(`{"type":"error","message":%q}`, err.Error()))
+		}
+		_, _ = w.Write(data)
+		_, _ = w.Write([]byte("\n"))
+		if flusher != nil {
+			flusher.Flush()
+		}
+	}
+}
+
+func pluralS(n int) string {
+	if n == 1 {
+		return ""
+	}
+	return "s"
+}

standalone/mobile.go

@@ -167,6 +167,24 @@ function addFiles(files) {
   selectedPage = Math.max(0, Math.ceil(selectedFiles.length / PAGE_SIZE) - 1);
   renderSelection();
 }
+async function readJSONStream(response, handle) {
+  if (!response.ok || !response.body) throw new Error('Request failed.');
+  const reader = response.body.getReader();
+  const decoder = new TextDecoder();
+  let buffer = '';
+  while (true) {
+    const { value, done } = await reader.read();
+    if (done) break;
+    buffer += decoder.decode(value, { stream: true });
+    let newline;
+    while ((newline = buffer.indexOf('\n')) >= 0) {
+      const line = buffer.slice(0, newline);
+      buffer = buffer.slice(newline + 1);
+      if (line.trim()) handle(JSON.parse(line));
+    }
+  }
+  if (buffer.trim()) handle(JSON.parse(buffer));
+}
 renderSelection();
 setupDropZone('dropZone', statusEl, (j) => {
   addFiles(j.files || []);
@@ -201,11 +219,29 @@ startBtn.addEventListener('click', async () => {
   startBtn.disabled = true;
   statusEl.textContent = 'Starting server...';
   statusEl.classList.add('is-busy');
-  const r = await fetch('/api/mobile/start', {
+  let j = null;
-    method:'POST', headers:{'Content-Type':'application/json'},
+  try {
-    body: JSON.stringify({ paths: selectedPaths }),
+    const r = await fetch('/api/mobile/start', {
-  });
+      method:'POST', headers:{'Content-Type':'application/json'},
-  const j = await r.json();
+      body: JSON.stringify({ paths: selectedPaths }),
+    });
+    await readJSONStream(r, (msg) => {
+      if (msg.type === 'status') {
+        statusEl.textContent = msg.message;
+        statusEl.classList.add('is-busy');
+      } else if (msg.type === 'done') {
+        j = msg;
+      } else if (msg.type === 'error') {
+        j = { error: msg.message };
+      }
+    });
+  } catch (e) {
+    statusEl.classList.remove('is-busy');
+    statusEl.innerHTML = '<span class="err">' + (e.message || e) + '</span>';
+    startBtn.disabled = false;
+    return;
+  }
+  if (!j) { statusEl.classList.remove('is-busy'); statusEl.innerHTML = '<span class="err">No response.</span>'; startBtn.disabled = false; return; }
   if (j.error) {
     statusEl.classList.remove('is-busy');
     statusEl.innerHTML = '<span class="err">' + j.error + '</span>';
@@ -303,13 +339,14 @@ func MobilePickFolder(w http.ResponseWriter, r *http.Request) {
 
 func MobileStart(w http.ResponseWriter, r *http.Request) {
 	stopActiveShare()
+	send := newJSONStream(w)
 
 	var req struct {
 		Path  string   `json:"path"`
 		Paths []string `json:"paths"`
 	}
 	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
-		writeJSON(w, map[string]any{"error": err.Error()})
+		send(map[string]any{"type": "error", "message": err.Error()})
 		return
 	}
 	paths := req.Paths
@@ -317,18 +354,19 @@ func MobileStart(w http.ResponseWriter, r *http.Request) {
 		paths = []string{req.Path}
 	}
 	if len(paths) == 0 {
-		writeJSON(w, map[string]any{"error": "File missing."})
+		send(map[string]any{"type": "error", "message": "File missing."})
 		return
 	}
 	files := make([]sharedFile, 0, len(paths))
-	for _, p := range paths {
+	for i, p := range paths {
 		if p == "" || !fileExists(p) {
-			writeJSON(w, map[string]any{"error": "File missing."})
+			send(map[string]any{"type": "error", "message": "File missing."})
 			return
 		}
+		send(map[string]any{"type": "status", "message": fmt.Sprintf("Loading %d/%d %s", i+1, len(paths), filepath.Base(p))})
 		fileBuf, err := os.ReadFile(p)
 		if err != nil {
-			writeJSON(w, map[string]any{"error": "Read failed: " + err.Error()})
+			send(map[string]any{"type": "error", "message": "Read failed: " + err.Error()})
 			return
 		}
 		files = append(files, sharedFile{buf: fileBuf, filename: filepath.Base(p)})
@@ -337,15 +375,16 @@ func MobileStart(w http.ResponseWriter, r *http.Request) {
 	// 6 random bytes -> base64url, no padding
 	tokenBytes := make([]byte, 6)
 	if _, err := rand.Read(tokenBytes); err != nil {
-		writeJSON(w, map[string]any{"error": "Token gen failed: " + err.Error()})
+		send(map[string]any{"type": "error", "message": "Token gen failed: " + err.Error()})
 		return
 	}
 	token := strings.TrimRight(base64.URLEncoding.EncodeToString(tokenBytes), "=")
 
 	cfgPort := LoadConfig().SendToMobile.Port
+	send(map[string]any{"type": "status", "message": "Starting server..."})
 	listener, err := net.Listen("tcp", "0.0.0.0:"+strconv.Itoa(cfgPort))
 	if err != nil {
-		writeJSON(w, map[string]any{"error": "Failed to bind: " + err.Error()})
+		send(map[string]any{"type": "error", "message": "Failed to bind: " + err.Error()})
 		return
 	}
 	port := listener.Addr().(*net.TCPAddr).Port
@@ -363,7 +402,7 @@ func MobileStart(w http.ResponseWriter, r *http.Request) {
 	ips := getLanIPs()
 	if len(ips) == 0 {
 		_ = share.server.Close()
-		writeJSON(w, map[string]any{"error": "No non-loopback IPv4 interface found. Are you on a network?"})
+		send(map[string]any{"type": "error", "message": "No non-loopback IPv4 interface found. Are you on a network?"})
 		return
 	}
 
@@ -388,7 +427,7 @@ func MobileStart(w http.ResponseWriter, r *http.Request) {
 	if len(files) == 1 {
 		filename = files[0].filename
 	}
-	writeJSON(w, map[string]any{"urls": urls, "filename": filename})
+	send(map[string]any{"type": "done", "urls": urls, "filename": filename})
 }
 
 func MobileStop(w http.ResponseWriter, r *http.Request) {

standalone/mraid.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -131,6 +132,24 @@ function addPaths(paths) {
   selectedPage = Math.max(0, Math.ceil(pickedFiles.length / PAGE_SIZE) - 1);
   renderSelection();
 }
+async function readJSONStream(response, handle) {
+  if (!response.ok || !response.body) throw new Error('Request failed.');
+  const reader = response.body.getReader();
+  const decoder = new TextDecoder();
+  let buffer = '';
+  while (true) {
+    const { value, done } = await reader.read();
+    if (done) break;
+    buffer += decoder.decode(value, { stream: true });
+    let newline;
+    while ((newline = buffer.indexOf('\n')) >= 0) {
+      const line = buffer.slice(0, newline);
+      buffer = buffer.slice(newline + 1);
+      if (line.trim()) handle(JSON.parse(line));
+    }
+  }
+  if (buffer.trim()) handle(JSON.parse(buffer));
+}
 renderSelection();
 setupDropZone('dropZone', statusEl, (j) => {
   addPaths(j.paths || []);
@@ -161,8 +180,25 @@ document.getElementById('scan').addEventListener('click', async () => {
   resultsEl.innerHTML = '';
   if (!pickedFiles.length) { statusEl.classList.remove('is-busy'); statusEl.textContent = 'Pick files first.'; return; }
   const payload = { files: pickedFiles };
-  const r = await fetch('/api/mraid/scan', { method:'POST', headers:{'Content-Type':'application/json'}, body: JSON.stringify(payload) });
+  let j = null;
-  const j = await r.json();
+  try {
+    const r = await fetch('/api/mraid/scan', { method:'POST', headers:{'Content-Type':'application/json'}, body: JSON.stringify(payload) });
+    await readJSONStream(r, (msg) => {
+      if (msg.type === 'status') {
+        statusEl.textContent = msg.message;
+        statusEl.classList.add('is-busy');
+      } else if (msg.type === 'done') {
+        j = msg;
+      } else if (msg.type === 'error') {
+        j = { error: msg.message, results: msg.results || [], skipped: msg.skipped, skippedReason: msg.skippedReason };
+      }
+    });
+  } catch (e) {
+    statusEl.classList.remove('is-busy');
+    statusEl.textContent = 'Error: ' + (e.message || e);
+    return;
+  }
+  if (!j) { statusEl.classList.remove('is-busy'); statusEl.textContent = 'Error: No response.'; return; }
   if (j.error) { statusEl.classList.remove('is-busy'); statusEl.textContent = 'Error: ' + j.error; return; }
   const total = j.results.length;
   const withIssues = j.results.filter(r => !r.ok).length;
@@ -228,12 +264,13 @@ func MraidPickFiles(w http.ResponseWriter, r *http.Request) {
 }
 
 func MraidScan(w http.ResponseWriter, r *http.Request) {
+	send := newJSONStream(w)
 	var req struct {
 		Folder string   `json:"folder"`
 		Files  []string `json:"files"`
 	}
 	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
-		writeJSON(w, map[string]any{"results": []mraidResult{}, "error": err.Error()})
+		send(map[string]any{"type": "error", "message": err.Error(), "results": []mraidResult{}})
 		return
 	}
 
@@ -268,16 +305,17 @@ func MraidScan(w http.ResponseWriter, r *http.Request) {
 		noTargetsError = "No AppLovin, ironSource, or Unity folder HTML files were found."
 		baseDir = req.Folder
 	} else {
-		writeJSON(w, map[string]any{"results": []mraidResult{}, "error": "Pick a folder or files first"})
+		send(map[string]any{"type": "error", "message": "Pick a folder or files first", "results": []mraidResult{}})
 		return
 	}
 	if len(targets) == 0 {
-		writeJSON(w, map[string]any{"results": []mraidResult{}, "skipped": skipped, "skippedReason": skippedReason, "error": noTargetsError})
+		send(map[string]any{"type": "error", "message": noTargetsError, "results": []mraidResult{}, "skipped": skipped, "skippedReason": skippedReason})
 		return
 	}
 
 	results := []mraidResult{}
-	for _, file := range targets {
+	for i, file := range targets {
+		send(map[string]any{"type": "status", "message": fmt.Sprintf("Scanning %d/%d %s", i+1, len(targets), filepath.Base(file))})
 		data, err := os.ReadFile(file)
 		if err != nil {
 			continue
@@ -293,7 +331,7 @@ func MraidScan(w http.ResponseWriter, r *http.Request) {
 		}
 		results = append(results, mraidResult{File: display, OK: len(issues) == 0, Issues: issues})
 	}
-	writeJSON(w, map[string]any{"results": results, "skipped": skipped, "skippedReason": skippedReason})
+	send(map[string]any{"type": "done", "results": results, "skipped": skipped, "skippedReason": skippedReason})
 }
 
 var (

standalone/platform.go

@@ -114,8 +114,7 @@ func SaveConfig(cfg AppConfig) error {
 }
 
 func OpenInBrowser(url string) {
-	// `start` is a cmd builtin. Quoted empty arg is the window title.
+	cmd := hiddenCommand("rundll32.exe", "url.dll,FileProtocolHandler", url)
-	cmd := hiddenCommand("cmd", "/c", "start", "", url)
 	_ = cmd.Start()
 }
 

standalone/playworks.go

@@ -113,6 +113,25 @@ const statusEl = document.getElementById('status');
 const resultsEl = document.getElementById('results');
 const sourceSelectionEl = document.getElementById('sourceSelection');
 
+async function readJSONStream(response, handle) {
+  if (!response.ok || !response.body) throw new Error('Request failed.');
+  const reader = response.body.getReader();
+  const decoder = new TextDecoder();
+  let buffer = '';
+  while (true) {
+    const { value, done } = await reader.read();
+    if (done) break;
+    buffer += decoder.decode(value, { stream: true });
+    let newline;
+    while ((newline = buffer.indexOf('\n')) >= 0) {
+      const line = buffer.slice(0, newline);
+      buffer = buffer.slice(newline + 1);
+      if (line.trim()) handle(JSON.parse(line));
+    }
+  }
+  if (buffer.trim()) handle(JSON.parse(buffer));
+}
+
 function updateConvertBtn() {
   const hasNet = [...document.querySelectorAll('.net-cb')].some(c => c.checked);
   convertBtn.disabled = !srcEl.value || !outEl.value || !baseNameEl.value.trim() || !hasNet;
@@ -215,9 +234,24 @@ document.getElementById('convert').addEventListener('click', async () => {
     headers:{'Content-Type':'application/json'},
     body: JSON.stringify({ sourcePath: srcEl.value, outputDir: outEl.value, baseName: baseNameEl.value, networks })
   });
-  const msg = await res.json();
+  let msg = null;
+  try {
+    await readJSONStream(res, (event) => {
+      if (event.type === 'status') {
+        statusEl.textContent = event.message;
+        statusEl.classList.add('is-busy');
+      } else if (event.type === 'done') {
+        msg = event;
+      } else if (event.type === 'error') {
+        msg = { error: event.message, results: event.results || [] };
+      }
+    });
+  } catch (e) {
+    msg = { error: e.message || e, results: [] };
+  }
   convertBtn.disabled = false;
   updateConvertBtn();
+  if (!msg) { msg = { error: 'No response.', results: [] }; }
   if (msg.error) { statusEl.classList.remove('is-busy'); statusEl.textContent = 'Error: ' + msg.error; return; }
   const results = msg.results || [];
   const ok = results.filter(r => r.ok).length;
@@ -256,33 +290,37 @@ func PlayworksPickOutput(w http.ResponseWriter, r *http.Request) {
 }
 
 func PlayworksConvert(w http.ResponseWriter, r *http.Request) {
+	send := newJSONStream(w)
 	var opts playworksConvertOptions
 	if err := json.NewDecoder(r.Body).Decode(&opts); err != nil {
-		writeJSON(w, map[string]any{"results": []playworksNetworkResult{}, "error": err.Error()})
+		send(map[string]any{"type": "error", "message": err.Error(), "results": []playworksNetworkResult{}})
 		return
 	}
 	if !fileExists(opts.SourcePath) {
-		writeJSON(w, map[string]any{"results": []playworksNetworkResult{}, "error": "Source file not found."})
+		send(map[string]any{"type": "error", "message": "Source file not found.", "results": []playworksNetworkResult{}})
 		return
 	}
 	if err := os.MkdirAll(opts.OutputDir, 0755); err != nil {
-		writeJSON(w, map[string]any{"results": []playworksNetworkResult{}, "error": "Could not create output folder."})
+		send(map[string]any{"type": "error", "message": "Could not create output folder.", "results": []playworksNetworkResult{}})
 		return
 	}
+	send(map[string]any{"type": "status", "message": "Reading source HTML..."})
 	data, err := os.ReadFile(opts.SourcePath)
 	if err != nil {
-		writeJSON(w, map[string]any{"results": []playworksNetworkResult{}, "error": "Could not read source: " + err.Error()})
+		send(map[string]any{"type": "error", "message": "Could not read source: " + err.Error(), "results": []playworksNetworkResult{}})
 		return
 	}
 
 	results := []playworksNetworkResult{}
+	send(map[string]any{"type": "status", "message": "Converting Unity..."})
 	unityPath, err := copyPlayworksUnityInput(data, opts)
 	if err != nil {
 		results = append(results, playworksNetworkResult{Network: "un", OK: false, Error: err.Error()})
 	} else {
 		results = append(results, playworksNetworkResult{Network: "un", File: unityPath, OK: true})
 	}
-	for _, network := range opts.Networks {
+	for i, network := range opts.Networks {
+		send(map[string]any{"type": "status", "message": fmt.Sprintf("Converting %d/%d %s", i+1, len(opts.Networks), network)})
 		filePath, err := convertPlayworksNetwork(string(data), opts, network)
 		if err != nil {
 			results = append(results, playworksNetworkResult{Network: network, OK: false, Error: err.Error()})
@@ -290,7 +328,7 @@ func PlayworksConvert(w http.ResponseWriter, r *http.Request) {
 		}
 		results = append(results, playworksNetworkResult{Network: network, File: filePath, OK: true})
 	}
-	writeJSON(w, map[string]any{"results": results})
+	send(map[string]any{"type": "done", "results": results})
 }
 
 var playworksSuffixRx = regexp.MustCompile(`_(?:un|al|is|fb|gg|ap|mo|vu|mtg|tt)$`)

standalone/plec.go

@@ -100,6 +100,24 @@ function addFiles(files) {
   page = Math.max(0, Math.ceil(rows.length / PAGE_SIZE) - 1);
   renderRows();
 }
+async function readJSONStream(response, handle) {
+  if (!response.ok || !response.body) throw new Error('Request failed.');
+  const reader = response.body.getReader();
+  const decoder = new TextDecoder();
+  let buffer = '';
+  while (true) {
+    const { value, done } = await reader.read();
+    if (done) break;
+    buffer += decoder.decode(value, { stream: true });
+    let newline;
+    while ((newline = buffer.indexOf('\n')) >= 0) {
+      const line = buffer.slice(0, newline);
+      buffer = buffer.slice(newline + 1);
+      if (line.trim()) handle(JSON.parse(line));
+    }
+  }
+  if (buffer.trim()) handle(JSON.parse(buffer));
+}
 function renderRows() {
   const oldPager = document.getElementById('selectedPager');
   if (oldPager) oldPager.remove();
@@ -183,12 +201,31 @@ document.getElementById('upload').addEventListener('click', async () => {
   }
   statusEl.textContent = 'Uploading...';
   statusEl.classList.add('is-busy');
-  const res = await fetch('/api/plec/upload', {
+  let j = null;
-    method: 'POST',
+  try {
-    headers: { 'Content-Type': 'application/json' },
+    const res = await fetch('/api/plec/upload', {
-    body: JSON.stringify({ rows }),
+      method: 'POST',
-  });
+      headers: { 'Content-Type': 'application/json' },
-  const j = await res.json();
+      body: JSON.stringify({ rows }),
+    });
+    await readJSONStream(res, (msg) => {
+      if (msg.type === 'status') {
+        statusEl.textContent = msg.message;
+        statusEl.classList.add('is-busy');
+      } else if (msg.type === 'done') {
+        j = msg;
+      } else if (msg.type === 'error') {
+        j = { error: msg.message };
+      } else if (msg.type === 'rowErrors') {
+        j = { rowErrors: msg.rowErrors };
+      }
+    });
+  } catch (e) {
+    statusEl.classList.remove('is-busy');
+    statusEl.innerHTML = '<span class="err">' + (e.message || e) + '</span>';
+    return;
+  }
+  if (!j) { statusEl.classList.remove('is-busy'); statusEl.innerHTML = '<span class="err">No response.</span>'; return; }
   if (j.rowErrors) {
     statusEl.classList.remove('is-busy');
     for (const re of j.rowErrors) {
@@ -260,11 +297,12 @@ type plecRow struct {
 }
 
 func PlecUpload(w http.ResponseWriter, r *http.Request) {
+	send := newJSONStream(w)
 	var req struct {
 		Rows []plecRow `json:"rows"`
 	}
 	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
-		writeJSON(w, map[string]any{"error": err.Error()})
+		send(map[string]any{"type": "error", "message": err.Error()})
 		return
 	}
 	cfg := LoadConfig().Plec
@@ -289,11 +327,11 @@ func PlecUpload(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 	if len(rowErrors) > 0 {
-		writeJSON(w, map[string]any{"rowErrors": rowErrors})
+		send(map[string]any{"type": "rowErrors", "rowErrors": rowErrors})
 		return
 	}
 	if len(valid) == 0 {
-		writeJSON(w, map[string]any{"error": "Nothing to upload."})
+		send(map[string]any{"type": "error", "message": "Nothing to upload."})
 		return
 	}
 
@@ -303,37 +341,39 @@ func PlecUpload(w http.ResponseWriter, r *http.Request) {
 	mw := multipart.NewWriter(&buf)
 	for i, row := range valid {
 		idx := i + 1
+		send(map[string]any{"type": "status", "message": fmt.Sprintf("Preparing %d/%d %s", idx, len(valid), filepath.Base(row.Path))})
 		data, err := os.ReadFile(row.Path)
 		if err != nil {
-			writeJSON(w, map[string]any{"error": "Read failed: " + err.Error()})
+			send(map[string]any{"type": "error", "message": "Read failed: " + err.Error()})
 			return
 		}
 		stampedName := appendTimestamp(filepath.Base(row.Path), stamp)
 		fw, err := createFormFileWithType(mw, fmt.Sprintf("fileUpload_%d", idx), stampedName, "text/html")
 		if err != nil {
-			writeJSON(w, map[string]any{"error": err.Error()})
+			send(map[string]any{"type": "error", "message": err.Error()})
 			return
 		}
 		if _, err := fw.Write(data); err != nil {
-			writeJSON(w, map[string]any{"error": err.Error()})
+			send(map[string]any{"type": "error", "message": err.Error()})
 			return
 		}
 		iter := urlpkg.QueryEscape(strings.ReplaceAll(row.Iteration, " ", ""))
 		// Original uses encodeURI which keeps more chars than QueryEscape; emulate by un-escaping safe chars.
 		iter = encodeURICompatible(strings.ReplaceAll(row.Iteration, " ", ""))
 		if err := mw.WriteField(fmt.Sprintf("iterationNameUpload_%d", idx), iter); err != nil {
-			writeJSON(w, map[string]any{"error": err.Error()})
+			send(map[string]any{"type": "error", "message": err.Error()})
 			return
 		}
 	}
 	if err := mw.Close(); err != nil {
-		writeJSON(w, map[string]any{"error": err.Error()})
+		send(map[string]any{"type": "error", "message": err.Error()})
 		return
 	}
 
+	send(map[string]any{"type": "status", "message": fmt.Sprintf("Uploading %d file%s...", len(valid), pluralS(len(valid)))})
 	httpReq, err := http.NewRequest("POST", cfg.UploadUrl, &buf)
 	if err != nil {
-		writeJSON(w, map[string]any{"error": err.Error()})
+		send(map[string]any{"type": "error", "message": err.Error()})
 		return
 	}
 	httpReq.Header.Set("Content-Type", mw.FormDataContentType())
@@ -345,18 +385,18 @@ func PlecUpload(w http.ResponseWriter, r *http.Request) {
 
 	resp, err := http.DefaultClient.Do(httpReq)
 	if err != nil {
-		writeJSON(w, map[string]any{"error": "Network error: " + err.Error()})
+		send(map[string]any{"type": "error", "message": "Network error: " + err.Error()})
 		return
 	}
 	defer resp.Body.Close()
 	respBody, _ := io.ReadAll(resp.Body)
 	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
-		writeJSON(w, map[string]any{"error": fmt.Sprintf("HTTP %d\n%s", resp.StatusCode, truncate(string(respBody), 800))})
+		send(map[string]any{"type": "error", "message": fmt.Sprintf("HTTP %d\n%s", resp.StatusCode, truncate(string(respBody), 800))})
 		return
 	}
 	var parsed map[string]any
 	if err := json.Unmarshal(respBody, &parsed); err != nil {
-		writeJSON(w, map[string]any{"error": "Server returned non-JSON:\n" + truncate(string(respBody), 800)})
+		send(map[string]any{"type": "error", "message": "Server returned non-JSON:\n" + truncate(string(respBody), 800)})
 		return
 	}
 	var preview any
@@ -365,7 +405,7 @@ func PlecUpload(w http.ResponseWriter, r *http.Request) {
 	} else if v, ok := parsed["previewURL"]; ok {
 		preview = v
 	}
-	writeJSON(w, map[string]any{"preview": preview, "raw": parsed, "rawText": string(respBody)})
+	send(map[string]any{"type": "done", "preview": preview, "raw": parsed, "rawText": string(respBody)})
 }
 
 func ClipboardEndpoint(w http.ResponseWriter, r *http.Request) {