agentydragon(tasks): implement command snippet truncation in session approval labels

codex-cli/src/utils/string-utils.ts

@@ -0,0 +1,27 @@
+/**
+ * Truncate a string in the middle to ensure its length does not exceed maxLength.
+ * If the input is longer than maxLength, replaces the middle with a single-character ellipsis '…'.
+ */
+export function truncateMiddle(text: string, maxLength: number): string {
+  if (text.length <= maxLength) {
+    return text;
+  }
+  const ellipsis = '…';
+  const trimLength = maxLength - ellipsis.length;
+  const startLength = Math.ceil(trimLength / 2);
+  const endLength = Math.floor(trimLength / 2);
+  return text.slice(0, startLength) + ellipsis + text.slice(text.length - endLength);
+}
+
+/**
+ * Generate a session-scoped approval label for a given command.
+ * Embeds a truncated snippet of the first line of commandForDisplay.
+ */
+export function sessionScopedApprovalLabel(
+  commandForDisplay: string,
+  maxLength: number,
+): string {
+  const firstLine = commandForDisplay.split('\n')[0].trim();
+  const snippet = truncateMiddle(firstLine, maxLength);
+  return `Yes, always allow running \`${snippet}\` for this session (a)`;
+}