feat：架构重构

app/prompt/intent.py

@@ -3,28 +3,9 @@
 from app.schemas.decision import ChoiceDecision
 
 
-def build_offer_question() -> ChoiceDecision:
-    # 上一轮助手提出了具体修改时追加的判断，只看用户对这条提议的回应，比从历史文本推断意图更可靠
-    return ChoiceDecision(
-        instructions=(
-            "In the previous turn the assistant offered to perform the edit in `pending_offer` and asked whether the user wants it. "
-            "Classify how the latest user message (`prompt`) responds to that offer. "
-            "Judge by its function in the conversation, not by a fixed word list; short replies are normal."
-        ),
-        criteria={
-            # 同意执行提议，包括简短的肯定回答
-            "accept": "Agrees to perform exactly the offered edit, e.g. Okay, need, want, can, alright, mm-hmm, yes",
-            # 拒绝提议
-            "decline": "Declines the offer or says it is not needed, e.g. No, never mind, no",
-            # 提出新的或修改过的请求、提问，或与提议无关
-            "other": "Asks something else, requests a different or changed edit, or does not respond to the offer",
-        },
-    )
-
-
 def build_intent_question() -> ChoiceDecision:
     return ChoiceDecision(
-        # 区分意图模糊与修改细节缺失，后者交给需求理解
+        # 区分意图模糊与修改细节缺失，后者交给 screen agent
         instructions=(
             "Classify the user's primary intent. "
             "Classify the latest user answer in `clarification_history`, or `prompt` when there is no history. "
@@ -34,6 +15,7 @@ def build_intent_question() -> ChoiceDecision:
             "Choose qa for clear requests for a textual answer or general conversation, including information, explanation, diagnosis, advice, and assistant identity or capabilities. "
             "Requests need not be phrased as questions; being unrelated to screens does not make an intent unclear. "
             "A short conversational message that acknowledges, agrees, thanks, greets or closes the exchange (e.g. ok, Okay, um, got it, thanks, hello, goodbye) requests nothing further and is qa; decide by its function in the conversation, not by a fixed word list, and never treat it as unclear merely for being short. "
+            "When the assistant's last turn in `history` offered to make a specific edit, a reply agreeing to it (e.g. ok, yes, go ahead) requests that edit and is modify_screen. "
             "A vague complaint or evaluation without a requested next step is unclear, not automatically qa. "
             "An explicit edit request remains modify_screen even when edit details are missing. "
             "Do not infer intent solely from selected nodes or an empty screen."