Preserve HTML email quote history

static/index.html

@@ -219,8 +219,8 @@
       }, { once: true });
     })();
   </script>
-  <link rel="stylesheet" href="/static/style.css?v=20260630modelfallback">
+  <link rel="stylesheet" href="/static/style.css?v=20260630emailhtmlquote">
-  <link rel="modulepreload" href="/static/app.js?v=20260630modelfallback">
+  <link rel="modulepreload" href="/static/app.js?v=20260630emailhtmlquote">
   <link rel="modulepreload" href="/static/js/chat.js">
   <link rel="modulepreload" href="/static/js/ui.js">
   <link rel="modulepreload" href="/static/js/sessions.js">
@@ -2512,7 +2512,7 @@
 <script type="module" src="/static/js/settings.js"></script>
 <script type="module" src="/static/js/admin.js"></script>
 <script type="module" src="/static/js/assistant.js"></script>
-<script type="module" src="/static/app.js?v=20260630modelfallback"></script>  <!-- app.js must be LAST -->
+<script type="module" src="/static/app.js?v=20260630emailhtmlquote"></script>  <!-- app.js must be LAST -->
 <script type="module" src="/static/js/init.js"></script>
 <script type="module" src="/static/js/a11y.js"></script>
 <script nonce="{{CSP_NONCE}}">if('serviceWorker' in navigator){navigator.serviceWorker.register('/static/sw.js').catch(()=>{});}</script>

static/js/document.js

@@ -2588,9 +2588,47 @@ import { bindMenuDismiss, dismissOrRemove } from './escMenuStack.js';
     return -1;
   }
 
+  function _emailQuoteStartOffset(text) {
+    const original = String(text || '');
+    if (!original) return -1;
+    const boundary = String.raw`(?:^|\n|<br\s*\/?>|<\/(?:p|div|blockquote|li|tr|h[1-6])>)`;
+    const patterns = [
+      new RegExp(`${boundary}\\s*(?:[-_=–—\\s]|&nbsp;){3,}(?:previous|original|forwarded)\\s+(?:message|email|mail)(?:[-_=–—\\s]|&nbsp;){3,}`, 'i'),
+      new RegExp(`${boundary}\\s*On\\s+.{1,700}?\\s+wrote:\\s*`, 'i'),
+      new RegExp(`${boundary}\\s*-{2,}\\s*Original Message\\s*-{2,}`, 'i'),
+    ];
+    let best = -1;
+    for (const re of patterns) {
+      const m = re.exec(original);
+      if (!m) continue;
+      let idx = m.index;
+      const prefix = m[0].match(/^(?:\n|<br\s*\/?>|<\/(?:p|div|blockquote|li|tr|h[1-6])>)/i);
+      if (prefix) idx += prefix[0].length;
+      if (best < 0 || idx < best) best = idx;
+    }
+    const fromRe = new RegExp(`${boundary}\\s*From:\\s*\\S`, 'i');
+    const fromMatch = fromRe.exec(original);
+    if (fromMatch) {
+      let idx = fromMatch.index;
+      const prefix = fromMatch[0].match(/^(?:\n|<br\s*\/?>|<\/(?:p|div|blockquote|li|tr|h[1-6])>)/i);
+      if (prefix) idx += prefix[0].length;
+      const nearby = original.slice(idx, idx + 1200);
+      if (/(?:^|\n|<br\s*\/?>|<\/(?:p|div|blockquote|li|tr|h[1-6])>)\s*(?:To|Subject):\s*/i.test(nearby)) {
+        if (best < 0 || idx < best) best = idx;
+      }
+    }
+    return best;
+  }
+
   function _splitEmailReplyQuote(text) {
     const original = String(text || '');
     if (!original) return { body: '', quote: '', stripped: false };
+    const htmlQuoteOffset = _emailQuoteStartOffset(original);
+    if (htmlQuoteOffset >= 0) {
+      const body = original.slice(0, htmlQuoteOffset).trim();
+      const quote = original.slice(htmlQuoteOffset).trim();
+      return { body, quote, stripped: true };
+    }
     const lines = original.split('\n');
     const quoteIdx = _emailQuoteStartIndex(lines);
     if (quoteIdx < 0) return { body: original.trim(), quote: '', stripped: false };

static/sw.js

@@ -7,7 +7,7 @@
 //   - Other static assets (images/fonts/libs): cache-first with bg refresh.
 //   - API / non-GET: never cached.
 // Bump CACHE_NAME whenever the precache list or SW logic changes.
-const CACHE_NAME = 'odysseus-v334';
+const CACHE_NAME = 'odysseus-v335';
 
 // Core shell precached on install so repeat opens are instant without any
 // network wait. Keep this list in sync with the <script type="module"> tags