feat(hub): rolling chat summary to cap AI context and prevent mid-session failures

Co-authored-by: Cursor <cursoragent@cursor.com>

manual_trading_hub/static/app.js

@@ -3498,8 +3498,10 @@
   }
 
   const ARCHIVE_QUOTE_AI_KEY = "hub_archive_quote_ai";
+  let archiveQuoteAiPending = false;
 
   async function consumeArchiveQuoteAiPending() {
+    if (archiveQuoteAiPending || aiChatLoading) return;
     let raw = "";
     try {
       raw = sessionStorage.getItem(ARCHIVE_QUOTE_AI_KEY) || "";
@@ -3526,6 +3528,7 @@
       applyAiMobileTab("trading");
     }
 
+    archiveQuoteAiPending = true;
     setAiChatBusy(true);
     renderAiChatMessages(aiChatSessionCache, {
       pendingUser: content,
@@ -3547,12 +3550,14 @@
       showToast("复盘语录已发送给交易教练");
     } catch (e) {
       showToast(String(e), true);
+      if (input) input.value = content;
       try {
         await loadAiChatSession();
       } catch (_) {
         renderAiChatMessages(aiChatSessionCache);
       }
     } finally {
+      archiveQuoteAiPending = false;
       setAiChatBusy(false);
     }
   }
@@ -3604,6 +3609,7 @@
     const files = fileInput && fileInput.files ? Array.from(fileInput.files) : [];
     if (!text && !files.length) return;
     const pendingAttachments = files.map((f) => ({ name: f.name, kind: f.type.startsWith("image/") ? "image" : "text" }));
+    const savedText = text;
     if (input) input.value = "";
     setAiChatBusy(true);
     renderAiChatMessages(aiChatSessionCache, {
@@ -3629,6 +3635,7 @@
       }
     } catch (e) {
       showToast(String(e), true);
+      if (input && savedText) input.value = savedText;
       try {
         await loadAiChatSession();
       } catch (_) {