Add deploy environment header to partner node API calls

Read a .comfy_environment file from the ComfyUI base directory to
determine the deployment environment (e.g. standalone, portable, desktop).
Defaults to 'local_git' when the file is absent.

The value is sent as an X-Comfy-Deploy-Env header on all requests to
api.comfy.org, allowing the API to differentiate between environment types.

The .comfy_environment file is gitignored so launchers/installers can
write it without affecting the repository.

Co-authored-by: Amp <amp@ampcode.com>
Amp-Thread-ID: https://ampcode.com/threads/T-019d939e-6b4d-738b-8d1a-ac7cbf6736a4

comfy_api_nodes/util/client.py

@@ -19,6 +19,8 @@ from comfy import utils
 from comfy_api.latest import IO
 from server import PromptServer
 
+from comfy.deploy_environment import get_deploy_environment
+
 from . import request_logger
 from ._helpers import (
     default_base_url,
@@ -617,6 +619,7 @@ async def _request_base(cfg: _RequestConfig, expect_binary: bool):
         payload_headers = {"Accept": "*/*"} if expect_binary else {"Accept": "application/json"}
         if not parsed_url.scheme and not parsed_url.netloc:  # is URL relative?
             payload_headers.update(get_auth_header(cfg.node_cls))
+            payload_headers["X-Comfy-Env"] = get_deploy_environment()
         if cfg.endpoint.headers:
             payload_headers.update(cfg.endpoint.headers)