Revert "Merge pull request #281 from Leadernelson/main"

This reverts commit 36c24d7, reversing
changes made to fc7b0fe.

Author: pancacake

deeptutor/agents/question/agents/generator.py

@@ -120,28 +120,14 @@ async def _generate_payload(
                 "Template: {template}\n"
                 "User topic: {user_topic}\n"
                 "Preference: {preference}\n"
-                "Previously generated questions (do not repeat):\n{history_context}\n"
+                "Conversation context: {history_context}\n"
                 "Knowledge context: {knowledge_context}\n"
                 "Enabled tools: {available_tools}\n\n"
                 'Return JSON {{"question_type":"","question":"","options":{{}},"correct_answer":"","explanation":""}}'
             )
 
-        # Serialize the template without the bulky knowledge_context in metadata —
-        # it is already included via the dedicated {knowledge_context} placeholder
-        # and its presence inside the template JSON would cause it to appear twice,
-        # dominating the prompt and making the LLM generate identical questions for
-        # every template regardless of their individual concentrations.
-        template_dict = template.__dict__.copy()
-        if isinstance(template_dict.get("metadata"), dict):
-            stripped_metadata = {
-                k: v
-                for k, v in template_dict["metadata"].items()
-                if k != "knowledge_context"
-            }
-            template_dict["metadata"] = stripped_metadata
-
         user_prompt = user_prompt_template.format(
-            template=json.dumps(template_dict, ensure_ascii=False, indent=2),
+            template=json.dumps(template.__dict__, ensure_ascii=False, indent=2),
             user_topic=user_topic,
             preference=preference or "(none)",
             history_context=history_context or "(none)",

deeptutor/agents/question/coordinator.py

@@ -273,7 +273,6 @@ async def _generation_loop(
         generator = self._create_generator()
         results: list[dict[str, Any]] = []
         total = len(templates)
-        generated_questions: list[str] = []
 
         for idx, template in enumerate(templates, 1):
             await self._send_ws_update(
@@ -286,25 +285,13 @@ async def _generation_loop(
                 },
             )
 
-            # Build cumulative context from questions already generated in this
-            # session so the Generator can avoid producing duplicates.
-            cumulative_history = history_context
-            if generated_questions:
-                previous = "\n".join(
-                    f"Q{i}: {q}" for i, q in enumerate(generated_questions, start=1)
-                )
-                if cumulative_history:
-                    cumulative_history = f"{cumulative_history}\n\nQuestions generated in this session:\n{previous}"
-                else:
-                    cumulative_history = f"Questions generated in this session:\n{previous}"
-
             success = True
             try:
                 qa_pair = await generator.process(
                     template=template,
                     user_topic=user_topic,
                     preference=preference,
-                    history_context=cumulative_history,
+                    history_context=history_context,
                 )
             except Exception as exc:
                 success = False
@@ -327,10 +314,6 @@ async def _generation_loop(
             }
             results.append(result)
 
-            # Track successfully generated question text for diversity enforcement
-            if success and qa_pair.question:
-                generated_questions.append(qa_pair.question)
-
             await self._send_ws_update(
                 "result",
                 {

deeptutor/agents/question/prompts/en/generator.yaml

@@ -19,9 +19,6 @@ generate: |
   Tools enabled by the user:
   {available_tools}
 
-  Previously generated questions in this session (your new question MUST be different from all of these):
-  {history_context}
-
   Requirements:
   - Keep strict alignment with template.concentration and template.difficulty.
   - Respect template.question_type exactly. Do not silently change it.
@@ -36,7 +33,6 @@ generate: |
   - Provide a clear explanation.
   - Use the knowledge context when it helps ground the question.
   - Treat the enabled tools list as capability guidance only; do not mention tool names in the final output.
-  - Do NOT generate a question that is identical or nearly identical to any of the previously generated questions listed above.
 
   Return JSON only:
   {{

deeptutor/agents/question/prompts/zh/generator.yaml

@@ -19,9 +19,6 @@ generate: |
   用户当前启用的工具：
   {available_tools}
 
-  本次会话中已生成的题目（你的新题目必须与以下所有题目不同）：
-  {history_context}
-
   要求：
   - 严格对齐 template.concentration 与 template.difficulty。
   - 必须严格遵循 template.question_type，不要私自改题型。
@@ -35,7 +32,6 @@ generate: |
   - 给出清晰解释。
   - 在有帮助时使用知识上下文增强题目质量。
   - 可将启用工具列表视为能力提示，但不要在最终题目中直接提及工具名称。
-  - 不要生成与上面已生成题目相同或高度相似的题目。
 
   仅返回 JSON：
   {{