Add configurable hotkey for editor autocomplete trigger (#350)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

src-web/components/core/Editor/extensions.ts

@@ -184,6 +184,16 @@ export function getLanguageExtension({
   });
 }
 
+// Filter out autocomplete start triggers from completionKeymap since we handle it via configurable hotkeys.
+// Keep navigation keys (ArrowUp/Down, Enter, Escape, etc.) but remove startCompletion bindings.
+const filteredCompletionKeymap = completionKeymap.filter((binding) => {
+  const key = binding.key?.toLowerCase() ?? '';
+  const mac = (binding as { mac?: string }).mac?.toLowerCase() ?? '';
+  // Filter out Ctrl-Space and Mac-specific autocomplete triggers (Alt-`, Alt-i)
+  const isStartTrigger = key.includes('space') || mac.includes('alt-') || mac.includes('`');
+  return !isStartTrigger;
+});
+
 export const baseExtensions = [
   highlightSpecialChars(),
   history(),
@@ -192,6 +202,7 @@ export const baseExtensions = [
   autocompletion({
     tooltipClass: () => 'x-theme-menu',
     closeOnBlur: true, // Set to `false` for debugging in devtools without closing it
+    defaultKeymap: false, // We handle the trigger via configurable hotkeys
     compareCompletions: (a, b) => {
       // Don't sort completions at all, only on boost
       return (a.boost ?? 0) - (b.boost ?? 0);
@@ -199,7 +210,7 @@ export const baseExtensions = [
   }),
   syntaxHighlighting(syntaxHighlightStyle),
   syntaxTheme,
-  keymap.of([...historyKeymap, ...completionKeymap]),
+  keymap.of([...historyKeymap, ...filteredCompletionKeymap]),
 ];
 
 export const readonlyExtensions = [