for obscure bad-cookies issue, autonuke cookies

don't ask me how or why some people seem to have unreadable cookie data on localhost

Author: mcmonkey4eva

docs/Video Model Support.md

@@ -417,3 +417,4 @@ There's a full step by step guide for video model usage here: <https://github.co
         - You can use the Wan 2.1 Lightx2v or other causvid-likes (see [CausVid Section Above](#wan-causvid---high-speed-14b)) on the Wan 2.2 14B (not on the 5B)
             - For I2V, this seems to "just work"
             - For T2V, this has soe visual oddities but does still mostly work
+        - Wan 2.2 has an official prompting guide book: <https://alidocs.dingtalk.com/i/nodes/EpGBa2Lm8aZxe5myC99MelA2WgN7R35y>

src/wwwroot/js/util.js

@@ -482,18 +482,30 @@ function getCookie(name) {
 
 /** Lists all cookies that start with the given prefix. */
 function listCookies(prefix) {
-    let decodedCookie = decodeURIComponent(document.cookie);
-    let ca = decodedCookie.split(';');
-    let result = [];
-    for(let i = 0; i < ca.length; i++) {
-        let c = ca[i].trim();
-        let equal = c.indexOf('=');
-        let name = c.substring(0, equal);
-        if (name.startsWith(prefix)) {
-            result.push(name);
+    try {
+        let decodedCookie = decodeURIComponent(document.cookie);
+        let ca = decodedCookie.split(';');
+        let result = [];
+        for(let i = 0; i < ca.length; i++) {
+            let c = ca[i].trim();
+            let equal = c.indexOf('=');
+            let name = c.substring(0, equal);
+            if (name.startsWith(prefix)) {
+                result.push(name);
+            }
         }
+        return result;
+    }
+    catch (e) {
+        console.error('Error listing cookies:', e);
+        if (e instanceof URIError) { // Malformed cookie data, try to nuke em
+            for (let cookie of document.cookie.split(';')) {
+                let name = cookie.trim().split('=')[0];
+                deleteCookie(name);
+            }
+        }
+        return [];
     }
-    return result;
 }
 
 /** Deletes the cookie with the given name. */