feat: rebrand as Open Claude and harden OpenAI REPL

src/ink/terminal.ts

@@ -165,6 +165,12 @@ const EXTENDED_KEYS_TERMINALS = [
 /** True if this terminal correctly handles extended key reporting
  *  (Kitty keyboard protocol + xterm modifyOtherKeys). */
 export function supportsExtendedKeys(): boolean {
+  // Open Claude defaults this off because some real terminals render the UI
+  // but stop delivering normal typing once kitty/modifyOtherKeys negotiation
+  // is enabled. Power users can opt back in explicitly.
+  if (process.env.OPENCLAUDE_ENABLE_EXTENDED_KEYS !== '1') {
+    return false
+  }
   return EXTENDED_KEYS_TERMINALS.includes(env.terminal ?? '')
 }