fix: list continuation ligne complete + autocomplete lazy-load

- Listes: reconstruit fullLine (before+after) pour matcher regex milieu de ligne
- curseur dans le prefixe → laisse le navigateur gerer (pas d'interception)
- Autocomplete: suggest/detectContext charges via import() dynamique
- Alt+Backslash gere les deux variantes de key (\ et Backslash)

frontend/editor-poc.html

@@ -1703,55 +1703,56 @@ body { font-family: var(--sans); background: var(--bg); color: var(--text); heig
     var before = ta.value.slice(0, start);
     var after = ta.value.slice(end);
 
-    // Smart insertion: if we matched a prefix, replace it
+    // Lazy-load detectContext for smart insertion
-    var lineStart = before.lastIndexOf('\n') + 1;
+    import('/static/js/autocomplete.js').then(function(m) {
-    var lineBefore = before.slice(lineStart);
+      var lineStart = before.lastIndexOf('\n') + 1;
-    var ctx = detectContext(ta.value, start);
+      var ctx = m.detectContext(ta.value, start);
 
-    if (ctx.type === 'wikilink') {
+      if (ctx.type === 'wikilink') {
-      // Replace [[partial with [[filename]]
+        var bracketPos = before.lastIndexOf('[[');
-      var bracketPos = before.lastIndexOf('[[');
+        if (bracketPos >= 0) {
-      if (bracketPos >= 0) {
+          before = before.slice(0, bracketPos) + '[[' + item.insert;
-        before = before.slice(0, bracketPos) + '[[' + item.insert;
+          ta.value = before + after;
+          var newPos = before.length;
+          ta.setSelectionRange(newPos, newPos);
+        }
+      } else if (ctx.type === 'frontmatter') {
+        before = before.slice(0, lineStart) + item.insert;
         ta.value = before + after;
-        var newPos = before.length;
+        ta.setSelectionRange(before.length, before.length);
+      } else {
+        ta.value = before + item.insert + after;
+        var newPos = start + item.insert.length;
         ta.setSelectionRange(newPos, newPos);
       }
-    } else if (ctx.type === 'frontmatter') {
-      // Replace current line with the field
-      before = before.slice(0, lineStart) + item.insert;
-      ta.value = before + after;
-      ta.setSelectionRange(before.length, before.length);
-    } else {
-      // Standard insert at cursor
-      ta.value = before + item.insert + after;
-      var newPos = start + item.insert.length;
-      ta.setSelectionRange(newPos, newPos);
-    }
 
-    hideAutocomplete();
+      hideAutocomplete();
-    ta.focus();
+      ta.focus();
-    markDirty();
+      markDirty();
-    autoHeight();
+      autoHeight();
-    updateLineNumbers();
+      updateLineNumbers();
+    });
   }
 
   function triggerAutocomplete() {
-    var result = suggest(ta.value, ta.selectionStart);
+    // Lazy-load the autocomplete module on first use
-    if (result.async) {
+    var loadAndTrigger = function() {
-      // Wikilink: fetch file list
       import('/static/js/autocomplete.js').then(function(m) {
-        m.searchWikilinks(result.partial || '', function(items) {
+        var result = m.suggest(ta.value, ta.selectionStart);
-          showAutocomplete(items, 'Wikilinks');
+        if (result.async) {
-        });
+          m.searchWikilinks(result.partial || '', function(items) {
+            showAutocomplete(items, 'Wikilinks');
+          });
+        } else if (result.items.length > 0) {
+          var ctxLabels = {
+            mermaid: 'Mermaid', code: 'Code', fence_open: 'Langage',
+            frontmatter: 'Frontmatter', markdown: 'Markdown'
+          };
+          showAutocomplete(result.items, ctxLabels[result.context] || result.context);
+        }
       });
-    } else if (result.items.length > 0) {
+    };
-      var ctxLabels = {
+    loadAndTrigger();
-        mermaid: 'Mermaid', code: 'Code', fence_open: 'Langage',
-        frontmatter: 'Frontmatter', markdown: 'Markdown'
-      };
-      showAutocomplete(result.items, ctxLabels[result.context] || result.context);
-    }
   }
 
   function getCaretCoordinates(textarea) {
@@ -1786,8 +1787,8 @@ body { font-family: var(--sans); background: var(--bg); color: var(--text); heig
       else if (e.key === 'Escape') { e.preventDefault(); hideAutocomplete(); }
       return;
     }
-    // Alt+\ : force autocomplete
+    // Alt+\ : force autocomplete (key may be '\' or 'Backslash' depending on browser)
-    if (e.altKey && !e.ctrlKey && !e.metaKey && e.key === '\\') {
+    if (e.altKey && !e.ctrlKey && !e.metaKey && (e.key === '\\' || e.key === 'Backslash')) {
       e.preventDefault();
       triggerAutocomplete();
       return;
@@ -1801,24 +1802,30 @@ body { font-family: var(--sans); background: var(--bg); color: var(--text); heig
       var before = ta.value.slice(0, ta.selectionStart);
       var after = ta.value.slice(ta.selectionEnd);
       var lineStart = before.lastIndexOf('\n') + 1;
-      var currentLine = before.slice(lineStart);
+      // Reconstruct FULL current line (before cursor + after cursor until newline)
-      var indent = (currentLine.match(/^(\s*)/) || [''])[0];
+      var afterNewline = after.indexOf('\n');
+      var restOfLine = afterNewline >= 0 ? after.slice(0, afterNewline) : after;
+      var fullLine = before.slice(lineStart) + restOfLine;
+      var cursorInLine = ta.selectionStart - lineStart;
+      var indent = (fullLine.match(/^(\s*)/) || [''])[0];
       // Ordered list: 1. 2. 3. etc
-      var olMatch = currentLine.match(/^(\s*)(\d+)\.\s/);
+      var olMatch = fullLine.match(/^(\s*)(\d+)\.\s/);
       // Unordered list: - * +
-      var ulMatch = currentLine.match(/^(\s*)([-*+])\s/);
+      var ulMatch = fullLine.match(/^(\s*)([-*+])\s/);
       // Task checkbox: - [ ] or - [x]
-      var taskMatch = currentLine.match(/^(\s*)([-*+])\s+\[([ xX])\]\s/);
+      var taskMatch = fullLine.match(/^(\s*)([-*+])\s+\[([ xX])\]\s/);
 
       if (taskMatch) {
-        var afterTaskTrim = currentLine.slice(taskMatch[0].length).trim();
+        var textAfterMarker = fullLine.slice(taskMatch[0].length);
-        if (afterTaskTrim.length === 0) {
+        // Only continue if cursor is at or after the marker text
-          // Empty checkbox: break list (remove this line)
+        if (cursorInLine < taskMatch[0].length) return; // cursor in prefix, let browser handle
+        if (textAfterMarker.trim().length === 0) {
+          // Empty checkbox: break list
           e.preventDefault();
-          ta.value = before.slice(0, lineStart) + after;
+          ta.value = before.slice(0, lineStart) + after.slice(restOfLine.length);
           ta.setSelectionRange(lineStart, lineStart);
         } else {
-          // Continue checkbox (empty, unchecked)
+          // Continue checkbox
           e.preventDefault();
           ta.value = before + '\n' + indent + taskMatch[2] + ' [ ] ';
           ta.setSelectionRange(ta.value.length, ta.value.length);
@@ -1826,6 +1833,7 @@ body { font-family: var(--sans); background: var(--bg); color: var(--text); heig
         markDirty(); autoHeight(); updateLineNumbers();
         return;
       } else if (olMatch) {
+        if (cursorInLine < olMatch[0].length) return;
         // Auto-increment ordered list
         e.preventDefault();
         var num = parseInt(olMatch[2]) + 1;
@@ -1834,11 +1842,12 @@ body { font-family: var(--sans); background: var(--bg); color: var(--text); heig
         markDirty(); autoHeight(); updateLineNumbers();
         return;
       } else if (ulMatch) {
-        var afterTrim = currentLine.slice(ulMatch[0].length).trim();
+        if (cursorInLine < ulMatch[0].length) return;
-        if (afterTrim.length === 0) {
+        var textAfter = fullLine.slice(ulMatch[0].length);
-          // Empty bullet: remove it and break list
+        if (textAfter.trim().length === 0) {
+          // Empty bullet: break list
           e.preventDefault();
-          ta.value = before.slice(0, lineStart) + '\n' + after.slice(after.indexOf('\n') + 1);
+          ta.value = before.slice(0, lineStart) + after.slice(restOfLine.length);
           ta.setSelectionRange(lineStart, lineStart);
         } else {
           // Continue bullet