feat(cli): add /verbose slash command to toggle debug output at runtime

Closes #77. Users can now type /verbose in the CLI to toggle verbose
mode on or off without restarting. When enabled, full tool call
parameters, results, and debug logs are shown. The agent's
verbose_logging and quiet_mode flags are updated live, and Python
logging levels are reconfigured accordingly.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

hermes_cli/commands.py

@@ -25,6 +25,7 @@ COMMANDS = {
     "/cron": "Manage scheduled tasks (list, add, remove)",
     "/skills": "Search, install, inspect, or manage skills from online registries",
     "/platforms": "Show gateway/messaging platform status",
+    "/verbose": "Toggle verbose mode (show tool calls, parameters, and results)",
     "/quit": "Exit the CLI (also: /exit, /q)",
 }