feat: extend verbose tool feedback

src/agents/pi-embedded-subscribe.tools.ts

@@ -33,6 +33,24 @@ export function sanitizeToolResult(result: unknown): unknown {
   return { ...record, content: sanitized };
 }
 
+export function extractToolResultText(result: unknown): string | undefined {
+  if (!result || typeof result !== "object") return undefined;
+  const record = result as Record<string, unknown>;
+  const content = Array.isArray(record.content) ? record.content : null;
+  if (!content) return undefined;
+  const texts = content
+    .map((item) => {
+      if (!item || typeof item !== "object") return undefined;
+      const entry = item as Record<string, unknown>;
+      if (entry.type !== "text" || typeof entry.text !== "string") return undefined;
+      const trimmed = entry.text.trim();
+      return trimmed ? trimmed : undefined;
+    })
+    .filter((value): value is string => Boolean(value));
+  if (texts.length === 0) return undefined;
+  return texts.join("\n");
+}
+
 export function isToolResultError(result: unknown): boolean {
   if (!result || typeof result !== "object") return false;
   const record = result as { details?: unknown };