refactor(app): 移除 Gradio feedback 采集模块

- 删除 write_feedback / submit_feedback 函数与对应 UI 组件（Radio、Textbox、Button、Status）
- 精简 submit_message / reset_session 返回值数量，移除 feedback 相关占位
- 组件输出列表同步瘦身

app.py

@@ -1,7 +1,5 @@
-import json
 import os
 import shutil
-from datetime import datetime
 from pathlib import Path
 from uuid import uuid4
 
@@ -66,35 +64,13 @@ def format_status(result: dict) -> str:
     ]).strip()
 
 
-def write_feedback(state: dict, rating: str, comment: str) -> Path:
-    payload = state.get("latest_tool_payload") or {}
-    feedback_dir = ARTIFACT_ROOT / "feedback"
-    feedback_dir.mkdir(parents=True, exist_ok=True)
-    feedback_path = feedback_dir / "feedback.jsonl"
-
-    record = {
-        "timestamp": datetime.now().astimezone().isoformat(timespec="seconds"),
-        "session_id": state.get("session_id"),
-        "run_id": payload.get("run_id"),
-        "rating": rating,
-        "comment": comment.strip(),
-        "output_path": payload.get("output_path"),
-        "manifest_path": payload.get("manifest_path"),
-    }
-
-    with feedback_path.open("a", encoding="utf-8") as handle:
-        handle.write(json.dumps(record, ensure_ascii=False) + "\n")
-
-    return feedback_path
-
-
 def submit_message(message, state):
     state = state or new_session_state()
     text, image_path = parse_user_message(message)
     uploaded_image = copy_uploaded_image(image_path, state["session_id"])
 
     if not text and not uploaded_image:
-        return state["chat_messages"], state, None, None, "Enter a message or upload an image.", {"text": "", "files": []}, None, "", ""
+        return state["chat_messages"], state, None, None, "Enter a message or upload an image.", {"text": "", "files": []}
 
     display_text = text or "Generate a 3D model from the uploaded image."
     if uploaded_image:
@@ -121,30 +97,15 @@ def submit_message(message, state):
             result.get("download_path"),
             status,
             {"text": "", "files": []},
-            None,
-            "",
-            "",
         )
     except Exception as exc:
         state["chat_messages"].append({"role": "assistant", "content": f"Failed: {exc}"})
-        return state["chat_messages"], state, None, None, f"Failed: `{exc}`", {"text": "", "files": []}, None, "", ""
-
-
-def submit_feedback(rating, comment, state):
-    state = state or new_session_state()
-    payload = state.get("latest_tool_payload") or {}
-    if not payload.get("run_id"):
-        return "Generate a model before submitting feedback.", comment or ""
-    if not rating:
-        return "Choose satisfied or unsatisfied before submitting feedback.", comment or ""
-
-    feedback_path = write_feedback(state, rating, comment or "")
-    return f"Feedback saved to `{feedback_path}`.", ""
+        return state["chat_messages"], state, None, None, f"Failed: `{exc}`", {"text": "", "files": []}
 
 
 def reset_session():
     state = new_session_state()
-    return [], state, None, None, "New session started.", {"text": "", "files": []}, None, "", ""
+    return [], state, None, None, "New session started.", {"text": "", "files": []}
 
 
 with gr.Blocks(title="ForgeCAD", fill_height=True) as demo:
@@ -172,18 +133,6 @@ with gr.Blocks(title="ForgeCAD", fill_height=True) as demo:
             preview = gr.Model3D(label="Model Preview", height=560)
             download = gr.File(label="Download Latest Model")
             status = gr.Markdown("No model generated yet.")
-            gr.Markdown("### Feedback")
-            feedback_rating = gr.Radio(
-                choices=["满意", "不满意"],
-                label="How was this result?",
-            )
-            feedback_comment = gr.Textbox(
-                label="Optional notes",
-                placeholder="What worked, what failed, or what you wanted instead.",
-                lines=3,
-            )
-            feedback_submit = gr.Button("Submit Feedback")
-            feedback_status = gr.Markdown("")
 
     composer.submit(
         submit_message,
@@ -195,9 +144,6 @@ with gr.Blocks(title="ForgeCAD", fill_height=True) as demo:
             download,
             status,
             composer,
-            feedback_rating,
-            feedback_comment,
-            feedback_status,
         ],
     )
     clear.click(
@@ -209,16 +155,8 @@ with gr.Blocks(title="ForgeCAD", fill_height=True) as demo:
             download,
             status,
             composer,
-            feedback_rating,
-            feedback_comment,
-            feedback_status,
         ],
     )
-    feedback_submit.click(
-        submit_feedback,
-        inputs=[feedback_rating, feedback_comment, state],
-        outputs=[feedback_status, feedback_comment],
-    )
 
 
 if __name__ == "__main__":