完全采用交互式使用方式；

requirements_generator/core/requirement_analyzer.py

@@ -1,6 +1,7 @@
 # core/requirement_analyzer.py - 需求分解、模块分类、函数签名生成
 import json
 from typing import List, Optional, Callable
+
 import config
 from core.llm_client import LLMClient
 from database.models import FunctionalRequirement, ChangeHistory
@@ -25,6 +26,7 @@ class RequirementAnalyzer:
         project_id:      int,
         raw_req_id:      int,
         knowledge:       str = "",
+        start_index:     int = 1,
     ) -> List[FunctionalRequirement]:
         """
         将原始需求文本分解为功能需求列表（含模块分类）。
@@ -34,6 +36,7 @@ class RequirementAnalyzer:
             project_id:      所属项目 ID
             raw_req_id:      原始需求记录 ID
             knowledge:       知识库文本（可选）
+            start_index:     功能需求序号起始值（新增需求时传入当前最大序号+1）
 
         Returns:
             FunctionalRequirement 对象列表（未持久化，id=None）
@@ -42,8 +45,8 @@ class RequirementAnalyzer:
             f"【参考知识库】\n{knowledge}\n" if knowledge else ""
         )
         prompt = config.DECOMPOSE_PROMPT_TEMPLATE.format(
-            raw_requirement=raw_requirement,
-            knowledge_section=knowledge_section,
+            raw_requirement   = raw_requirement,
+            knowledge_section = knowledge_section,
         )
 
         try:
@@ -54,22 +57,57 @@ class RequirementAnalyzer:
             raise RuntimeError(f"需求分解失败: {e}")
 
         reqs = []
-        for i, item in enumerate(items, 1):
+        for i, item in enumerate(items, start_index):
             req = FunctionalRequirement(
-                project_id=project_id,
-                raw_req_id=raw_req_id,
-                index_no=i,
-                title=item.get("title", f"功能{i}"),
-                description=item.get("description", ""),
-                function_name=item.get("function_name", f"function_{i}"),
-                priority=item.get("priority", "medium"),
-                module=item.get("module", config.DEFAULT_MODULE),
-                status="pending",
-                is_custom=False,
+                project_id    = project_id,
+                raw_req_id    = raw_req_id,
+                index_no      = i,
+                title         = item.get("title", f"功能{i}"),
+                description   = item.get("description", ""),
+                function_name = item.get("function_name", f"function_{i}"),
+                priority      = item.get("priority", "medium"),
+                module        = item.get("module", config.DEFAULT_MODULE),
+                status        = "pending",
+                is_custom     = False,
             )
             reqs.append(req)
         return reqs
 
+    # ══════════════════════════════════════════════════
+    #  新增需求（追加到已有功能需求列表）
+    # ══════════════════════════════════════════════════
+
+    def add_new_requirements(
+        self,
+        new_requirement_text: str,
+        project_id:           int,
+        raw_req_id:           int,
+        existing_reqs:        List[FunctionalRequirement],
+        knowledge:            str = "",
+    ) -> List[FunctionalRequirement]:
+        """
+        将新需求文本分解为功能需求，序号接续已有需求，返回新增部分列表（未持久化）。
+
+        Args:
+            new_requirement_text: 新增需求描述文本
+            project_id:           所属项目 ID
+            raw_req_id:           原始需求记录 ID
+            existing_reqs:        已有功能需求列表（用于计算起始序号）
+            knowledge:            知识库文本（可选）
+
+        Returns:
+            新增的 FunctionalRequirement 列表（未持久化）
+        """
+        start_index = max((r.index_no for r in existing_reqs), default=0) + 1
+        new_reqs = self.decompose(
+            raw_requirement = new_requirement_text,
+            project_id      = project_id,
+            raw_req_id      = raw_req_id,
+            knowledge       = knowledge,
+            start_index     = start_index,
+        )
+        return new_reqs
+
     # ══════════════════════════════════════════════════
     #  模块分类（独立步骤，可对已有需求列表重新分类）
     # ══════════════════════════════════════════════════
@@ -100,8 +138,8 @@ class RequirementAnalyzer:
         ]
         knowledge_section = f"【参考知识库】\n{knowledge}\n" if knowledge else ""
         prompt = config.MODULE_CLASSIFY_PROMPT_TEMPLATE.format(
-            requirements_json=json.dumps(req_list, ensure_ascii=False, indent=2),
-            knowledge_section=knowledge_section,
+            requirements_json = json.dumps(req_list, ensure_ascii=False, indent=2),
+            knowledge_section = knowledge_section,
         )
         try:
             result = self.llm.chat_json(prompt)
@@ -137,18 +175,17 @@ class RequirementAnalyzer:
         """
         knowledge_section = f"【参考知识库】\n{knowledge}\n" if knowledge else ""
         prompt = config.FUNC_SIGNATURE_PROMPT_TEMPLATE.format(
-            requirement_id=requirement_id or f"REQ.{func_req.index_no:02d}",
-            title=func_req.title,
-            description=func_req.description,
-            function_name=func_req.function_name,
-            module=func_req.module or config.DEFAULT_MODULE,
-            knowledge_section=knowledge_section,
+            requirement_id    = requirement_id or f"REQ.{func_req.index_no:02d}",
+            title             = func_req.title,
+            description       = func_req.description,
+            function_name     = func_req.function_name,
+            module            = func_req.module or config.DEFAULT_MODULE,
+            knowledge_section = knowledge_section,
         )
         try:
             sig = self.llm.chat_json(prompt)
             if not isinstance(sig, dict):
                 raise ValueError("LLM 返回结果不是 dict")
-            # 确保 module 字段存在
             if "module" not in sig:
                 sig["module"] = func_req.module or config.DEFAULT_MODULE
             return sig
@@ -211,7 +248,7 @@ class RequirementAnalyzer:
         }
 
     # ══════════════════════════════════════════════════
-    #  记录变更
+    #  变更记录与分析
     # ══════════════════════════════════════════════════
 
     def log_change(self, project_id: int, changes: str) -> None:
@@ -223,22 +260,32 @@ class RequirementAnalyzer:
         """查询项目变更历史"""
         return db.list_change_history(project_id)
 
-    def analyze_changes(self, old_reqs: List[FunctionalRequirement], new_reqs: List[FunctionalRequirement]) -> List[
-        str]:
+    def analyze_changes(
+        self,
+        old_reqs: List[FunctionalRequirement],
+        new_reqs: List[FunctionalRequirement],
+    ) -> List[str]:
         """
-        分析需求变更，返回需要变更的代码文件列表。
+        分析需求变更，返回受影响的函数名列表。
 
         Args:
             old_reqs: 旧的功能需求列表
-            new_reqs: 新的功能需求列表
+            new_reqs: 变更/新增后的功能需求列表
 
         Returns:
-            需要变更的文件列表
+            受影响的 function_name 列表
         """
-        changed_files = []
-        old_func_names = {req.function_name: req for req in old_reqs}
+        changed_funcs = []
+        old_func_map  = {req.function_name: req for req in old_reqs}
+
         for new_req in new_reqs:
-            old_req = old_func_names.get(new_req.function_name)
-            if not old_req or old_req.description != new_req.description or old_req.module != new_req.module:
-                changed_files.append(new_req.function_name)
-        return changed_files
+            old_req = old_func_map.get(new_req.function_name)
+            # 新增需求 或 描述/模块有变化
+            if (
+                not old_req
+                or old_req.description != new_req.description
+                or old_req.module      != new_req.module
+            ):
+                changed_funcs.append(new_req.function_name)
+
+        return changed_funcs