Change exit hotkey to ^X from ^C to avoid accidents

src/Editor/Editor.php

@@ -207,8 +207,7 @@ class Editor
                     $this->modified = true;
                     break;
 
-                case 'Q':
-                case "\x03": // ctrl-w
+                case "\x18": // ctrl-x
                     $this->running = false;
                     break;
 
@@ -418,7 +417,7 @@ class Editor
         [$w,$h] = $this->term->getSize();
 
         $text = <<<EOT
-        JSONEdit Alpha - Copyright (C) 2024, NoccyLabs
+        ## JSONEdit Alpha - Copyright (C) 2024, NoccyLabs
 
         Licensed under GNU GPL v3.0 or later.
 
@@ -661,17 +660,28 @@ class Editor
         if (!$keys) {
             $keys = [
                 'h' => 'Help',
-                'e' => 'Edit',
-                'E' => 'Edit key',
-                'I' => 'Insert…',
-                //'i' => 'Ins value',
                 'D' => 'Delete',
-                //'C' => 'Copy',
-                //'P' => 'Paste',
-                '^N' => 'New',
+            ];
+            $node = $this->list->getNodeForIndex($this->currentRow);
+            if ($node instanceof ValueNode) {
+                $keys = [ ...$keys, 
+                    'e' => 'Edit',
+                ];
+            }
+            if ($node instanceof ObjectNode || $node instanceof ArrayNode) {
+                $keys = [ ...$keys, 
+                    'I' => 'Insert…',
+                ];
+            }
+            if ($this->modified) {
+                $keys = [ ...$keys, 
+                    '^N' => 'New',
+                    '^W' => 'Write',
+                ];
+            }
+            $keys = [ ...$keys, 
                 '^R' => 'Read',
-                '^W' => 'Write',
-                '^C' => 'Exit',
+                '^X' => 'Exit',
             ];
         }