fix(tools): run post_setup in _reconfigure_provider() for env-var providers

_configure_provider() calls _run_post_setup() after collecting env vars
(line 2286). _reconfigure_provider() did not — providers with both
env_vars and post_setup (Browserbase, Browser Use, Firecrawl, Camofox)
skipped the installation step on reconfiguration.

Fix: mirror the _configure_provider() call. post_setup hooks are
idempotent (check before installing), so no behaviour change for users
who already have the dependencies installed.

hermes_cli/tools_config.py

@@ -2599,6 +2599,9 @@ def _reconfigure_provider(provider: dict, config: dict):
         else:
             _print_info("    Kept current")
 
+    if provider.get("post_setup"):
+        _run_post_setup(provider["post_setup"])
+
     # Imagegen backends prompt for model selection on reconfig too.
     plugin_name = provider.get("image_gen_plugin_name")
     if plugin_name: