feat(approvals): make dangerous command approval timeout configurable (#3886)

* feat(approvals): make dangerous command approval timeout configurable

Read `approvals.timeout` from config.yaml (default 60s) instead of
hardcoding 60 seconds in both the fallback CLI prompt and the TUI
prompt_toolkit callback.

Follows the same pattern as `clarify.timeout` which is already
configurable via CLI_CONFIG.

Closes #3765

* fix: add timeout default to approvals section in DEFAULT_CONFIG

---------

Co-authored-by: acsezen <asezen@icloud.com>

hermes_cli/callbacks.py

@@ -241,7 +241,8 @@ def approval_callback(cli, command: str, description: str) -> str:
         lock = cli._approval_lock
 
     with lock:
-        timeout = 60
+        from cli import CLI_CONFIG
+        timeout = CLI_CONFIG.get("approvals", {}).get("timeout", 60)
         response_queue = queue.Queue()
         choices = ["once", "session", "always", "deny"]
         if len(command) > 70: