Update index.html

index.html

@@ -2110,6 +2110,7 @@
                         try {
                             await fetch(Config.GAS_URL, { 
                                 method: 'POST', 
+                                headers: { 'Content-Type': 'text/plain;charset=utf-8' },
                                 body: JSON.stringify({ action: "delete_account", email: State.user }) 
                             });
                         } catch(e) {
@@ -2178,10 +2179,9 @@
                     btn.innerText = "Wait...";
                     
                     try {
-                        // Network error fix: Remove content-type application/json to avoid preflight issues in GAS.
-                        // Using standard text payload which GAS can parse.
                         const res = await fetch(Config.GAS_URL, { 
                             method: 'POST', 
+                            headers: { 'Content-Type': 'text/plain;charset=utf-8' },
                             body: JSON.stringify(payload) 
                         });
                         
@@ -2230,6 +2230,7 @@
                     try { 
                         const res = await fetch(Config.GAS_URL, { 
                             method: 'POST', 
+                            headers: { 'Content-Type': 'text/plain;charset=utf-8' },
                             body: JSON.stringify({ action: "get_all_chats", email: State.user }) 
                         });
                         const textResponse = await res.text();
@@ -2272,6 +2273,7 @@
                     try {
                         const res = await fetch(Config.GAS_URL, { 
                             method: 'POST', 
+                            headers: { 'Content-Type': 'text/plain;charset=utf-8' },
                             body: JSON.stringify({ action: "get_chat", email: State.user, threadId: threadId }) 
                         });
                         const textResponse = await res.text();
@@ -2329,6 +2331,7 @@
                     
                     fetch(Config.GAS_URL, { 
                         method: 'POST', 
+                        headers: { 'Content-Type': 'text/plain;charset=utf-8' },
                         body: JSON.stringify({ 
                             action: "save_chat", 
                             email: State.user, 
@@ -2352,6 +2355,7 @@
                         
                         fetch(Config.GAS_URL, { 
                             method: 'POST', 
+                            headers: { 'Content-Type': 'text/plain;charset=utf-8' },
                             body: JSON.stringify({ action: "clear_all_chats", email: State.user }) 
                         }).catch(e => console.error("Clear error:", e)).then(() => this.syncAllChats()); 
                     } 
@@ -2364,6 +2368,7 @@
                         
                         fetch(Config.GAS_URL, { 
                             method: 'POST', 
+                            headers: { 'Content-Type': 'text/plain;charset=utf-8' },
                             body: JSON.stringify({ action: "delete_chat", email: State.user, threadId: threadId }) 
                         }).catch(e => console.error("Delete error:", e)).then(() => this.syncAllChats()); 
                     } 
@@ -2842,8 +2847,10 @@
                     let mathCounter = 0;
                     
                     function replacer(match) {
-                        const id = `___MATH_${mathCounter++}___`;
+                        // Changed placeholder to completely avoid underscores or any special markdown characters
+                        const id = `MATHBLOCKPLACEHOLDER${mathCounter}ENDPLACEHOLDER`;
                         mathBlocks[id] = match;
+                        mathCounter++;
                         return id;
                     }
                     
@@ -2857,7 +2864,8 @@
                 
                 postprocessMath(html, mathBlocks) {
                     for (const [id, mathStr] of Object.entries(mathBlocks)) {
-                        html = html.replace(id, mathStr);
+                        // Using split.join to ensure global replace regardless of markdown alterations
+                        html = html.split(id).join(mathStr);
                     }
                     return html;
                 },