Fix: no-cache headers for static files, null guards in loadQueue/loadGallery, error boundaries in initializeApp, add paused to queue filter

app/main.py

@@ -19,6 +19,22 @@ import app.upscaler as upscaler
 
 app = FastAPI(title="AI Video Upscaler Dashboard")
 
+# Middleware to prevent browser caching of static files (dev mode)
+from starlette.middleware.base import BaseHTTPMiddleware
+from starlette.requests import Request
+
+class NoCacheStaticMiddleware(BaseHTTPMiddleware):
+    async def dispatch(self, request: Request, call_next):
+        response = await call_next(request)
+        path = request.url.path
+        if path.endswith(('.js', '.css', '.html')) or path == '/':
+            response.headers["Cache-Control"] = "no-cache, no-store, must-revalidate"
+            response.headers["Pragma"] = "no-cache"
+            response.headers["Expires"] = "0"
+        return response
+
+app.add_middleware(NoCacheStaticMiddleware)
+
 # CORS middleware for local development
 app.add_middleware(
     CORSMiddleware,

static/app.js

@@ -1494,7 +1494,7 @@ async function loadQueue() {
         const jobs = await res.json();
         
         const displayJobs = jobs.filter(job => 
-            ["queued", "analyzing", "extracting", "upscaling", "restoring_faces", "interpolating", "assembling", "completed", "failed", "cancelled", "interrupted"].includes(job.status)
+            ["queued", "analyzing", "extracting", "upscaling", "restoring_faces", "interpolating", "assembling", "completed", "failed", "cancelled", "interrupted", "paused"].includes(job.status)
         );
         
         if (displayJobs.length === 0) {
@@ -1520,7 +1520,7 @@ async function loadQueue() {
             
             let metaHtml = `
                 <span><i class="fa-solid fa-microchip"></i> Model: ${modelLabel} (${scaleLabel})</span>
-                <span><i class="fa-solid fa-file-video"></i> Source: ${job.video_path.split('/').pop()}</span>
+                <span><i class="fa-solid fa-file-video"></i> Source: ${job.video_path ? job.video_path.split('/').pop() : 'Unknown'}</span>
             `;
             
             let errorHtml = "";
@@ -2033,11 +2033,11 @@ async function loadUploadsBrowser() {
 }
 
 async function initializeApp() {
-    await loadModels();
-    await checkActiveJobs();
-    await loadGallery(); // Load enhancement gallery at page load
-    await loadQueue();   // Load active jobs queue at page load
-    await loadUploadsBrowser(); // Load previously uploaded videos browser
+    try { await loadModels(); } catch(e) { console.error("initializeApp: loadModels failed:", e); }
+    try { await checkActiveJobs(); } catch(e) { console.error("initializeApp: checkActiveJobs failed:", e); }
+    try { await loadGallery(); } catch(e) { console.error("initializeApp: loadGallery failed:", e); }
+    try { await loadQueue(); } catch(e) { console.error("initializeApp: loadQueue failed:", e); }
+    try { await loadUploadsBrowser(); } catch(e) { console.error("initializeApp: loadUploadsBrowser failed:", e); }
 
     // Load GPU Diagnostics
     try {