Fix: render text inputs as editable fields, not input sockets

Widget-type inputs in the optional section render as connection sockets (not
editable boxes) in some ComfyUI frontends. Moved all widgets (report_dir, run_tag,
reference_description, system_prompt, user_prompt, keep_loaded, auto_download) into
required; only generated_image (a real node-to-node wire) stays optional. Same fix
for the receptor's source_file.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

nodes/receptor.py

@@ -29,11 +29,10 @@ class CalibratorPromptReceptor:
                 "prompt": ("STRING", {"default": "", "multiline": True}),
                 "negative": ("STRING", {"default": "", "multiline": True}),
                 "seed": ("INT", {"default": 0, "min": 0, "max": 0x7FFFFFFFFFFFFFFF}),
-            },
-            "optional": {
                 # If set and present, a JSON file {prompt, negative, seed} overrides
                 # the widgets above. Lets the agent drive the loop file-first if it
-                # prefers that to the HTTP API.
+                # prefers that to the HTTP API. (Kept in `required` so it renders as an
+                # editable field, not an input socket.)
                 "source_file": ("STRING", {"default": ""}),
             },
         }