feat(browser): support externally managed Camofox sessions

Allow integrations to share a visible Camofox identity with Hermes and recover existing tabs without carrying local patches.

Co-authored-by: Cursor <cursoragent@cursor.com>

hermes_cli/config.py

@@ -628,6 +628,12 @@ DEFAULT_CONFIG = {
             # so the server maps it to a persistent Firefox profile automatically.
             # When false (default), each session gets a random userId (ephemeral).
             "managed_persistence": False,
+            # Optional externally managed Camofox identity. Useful when another
+            # app owns the visible browser and Hermes should operate in it.
+            "user_id": "",
+            "session_key": "",
+            # Rehydrate tab_id from Camofox before creating a new tab.
+            "adopt_existing_tab": False,
         },
     },