fix: resolve P2 and P3 audit findings

src/components/AddDownloadsModal.tsx

@@ -317,6 +317,7 @@ export const AddDownloadsModal = () => {
 
   // Metadata parser
   useEffect(() => {
+    let active = true;
     const lines = urls.split('\n').map(u => u.trim()).filter(u => u.length > 0);
 
     // Immediately display items in loading state
@@ -340,6 +341,7 @@ export const AddDownloadsModal = () => {
       let firstReadyIndex: number | null = null;
 
       for (let i = 0; i < lines.length; i++) {
+        if (!active) break;
         const url = lines[i];
         try {
           new URL(url);
@@ -408,15 +410,18 @@ export const AddDownloadsModal = () => {
           console.error("Meta fetch failed", e);
           updatedItems[i] = { ...updatedItems[i], size: 'Unknown', sizeBytes: 0, status: 'Error' };
         }
-        setParsedItems([...updatedItems]);
+        if (active) setParsedItems([...updatedItems]);
       }
 
-      if (firstReadyIndex !== null) {
+      if (active && firstReadyIndex !== null) {
         setSelectedItemIndex(firstReadyIndex);
       }
     }, 400);
 
-    return () => clearTimeout(timer);
+    return () => {
+      active = false;
+      clearTimeout(timer);
+    };
   }, [urls, pendingAddFilename]);
 
   if (!isAddModalOpen) return null;

src/components/SettingsView.tsx

@@ -245,6 +245,11 @@ export default function SettingsView() {
                     type="number" min="1" max="16"
                     value={settings.perServerConnections}
                     onChange={(e) => settings.setPerServerConnections(Number(e.target.value))}
+                    onBlur={(e) => {
+                      const val = Number(e.target.value);
+                      if (val < 1) settings.setPerServerConnections(1);
+                      if (val > 16) settings.setPerServerConnections(16);
+                    }}
                     className="app-control w-24 text-center"
                   />
                 </div>
@@ -257,6 +262,11 @@ export default function SettingsView() {
                     type="number" min="1" max="12"
                     value={settings.maxConcurrentDownloads}
                     onChange={(e) => settings.setMaxConcurrentDownloads(Number(e.target.value))}
+                    onBlur={(e) => {
+                      const val = Number(e.target.value);
+                      if (val < 1) settings.setMaxConcurrentDownloads(1);
+                      if (val > 12) settings.setMaxConcurrentDownloads(12);
+                    }}
                     className="app-control w-24 text-center"
                   />
                 </div>
@@ -285,6 +295,11 @@ export default function SettingsView() {
                     type="number" min="0" max="10"
                     value={settings.maxAutomaticRetries}
                     onChange={(e) => settings.setMaxAutomaticRetries(Number(e.target.value))}
+                    onBlur={(e) => {
+                      const val = Number(e.target.value);
+                      if (val < 0) settings.setMaxAutomaticRetries(0);
+                      if (val > 10) settings.setMaxAutomaticRetries(10);
+                    }}
                     className="app-control w-24 text-center"
                   />
                 </div>
@@ -453,9 +468,14 @@ export default function SettingsView() {
                     <div className="mac-settings-row">
                       <span className="text-[13px] text-text-primary pl-4">Proxy Port</span>
                       <input
-                        type="number"
+                        type="number" min="1" max="65535"
                         value={settings.proxyPort}
                         onChange={(e) => settings.setProxyPort(Number(e.target.value))}
+                        onBlur={(e) => {
+                          const val = Number(e.target.value);
+                          if (val < 1) settings.setProxyPort(1);
+                          if (val > 65535) settings.setProxyPort(65535);
+                        }}
                         className="app-control w-24 text-center"
                       />
                     </div>