fix: improve modify_file failure hints

web_server.py

@@ -2128,6 +2128,22 @@ async def handle_task_with_sender(terminal: WebTerminal, message, sender, client
         block_reports = {}
         detected_indices = set()
         block_pattern = re.compile(r"\[replace:(\d+)\](.*?)\[/replace\]", re.DOTALL)
+        structure_warnings: List[str] = []
+        structure_detail_entries: List[Dict] = []
+
+        def record_structure_warning(message: str, hint: Optional[str] = None):
+            """记录结构性缺陷，便于给出更具体的反馈。"""
+            if message in structure_warnings:
+                return
+            structure_warnings.append(message)
+            structure_detail_entries.append({
+                "index": 0,
+                "status": "failed",
+                "reason": message,
+                "removed_lines": 0,
+                "added_lines": 0,
+                "hint": hint or "请严格按照模板输出：[replace:n] + <<OLD>>/<<NEW>> + [/replace]，并使用 <<<END_MODIFY>>> 收尾。"
+            })
         
         def extract_segment(body: str, tag: str):
             marker = f"<<{tag}>>"
@@ -2176,6 +2192,30 @@ async def handle_task_with_sender(terminal: WebTerminal, message, sender, client
                 "error": old_error or new_error
             })
         
+        if not blocks_info:
+            has_replace_start = bool(re.search(r"\[replace:\s*\d+\]", apply_text))
+            has_replace_end = "[/replace]" in apply_text
+            has_old_tag = "<<OLD>>" in apply_text
+            has_new_tag = "<<NEW>>" in apply_text
+
+            if has_replace_start and not has_replace_end:
+                record_structure_warning("检测到 [replace:n] 标记但缺少对应的 [/replace] 结束标记。")
+            if has_replace_end and not has_replace_start:
+                record_structure_warning("检测到 [/replace] 结束标记但缺少对应的 [replace:n] 起始标记。")
+
+            old_tags = len(re.findall(r"<<OLD>>", apply_text))
+            completed_old_tags = len(re.findall(r"<<OLD>>[\s\S]*?<<END>>", apply_text))
+            if old_tags and completed_old_tags < old_tags:
+                record_structure_warning("检测到 <<OLD>> 段落但未看到对应的 <<END>> 结束标记。")
+
+            new_tags = len(re.findall(r"<<NEW>>", apply_text))
+            completed_new_tags = len(re.findall(r"<<NEW>>[\s\S]*?<<END>>", apply_text))
+            if new_tags and completed_new_tags < new_tags:
+                record_structure_warning("检测到 <<NEW>> 段落但未看到对应的 <<END>> 结束标记。")
+
+            if (has_replace_start or has_replace_end or has_old_tag or has_new_tag) and not structure_warnings:
+                record_structure_warning("检测到部分补丁标记，但整体结构不完整，请严格按照模板填写所有标记。")
+
         total_blocks = len(blocks_info)
         result["total_blocks"] = total_blocks
         if forced:
@@ -2240,11 +2280,15 @@ async def handle_task_with_sender(terminal: WebTerminal, message, sender, client
         
         result["completed_blocks"] = completed_blocks
         result["failed_blocks"] = failed_blocks
-        result["details"] = sorted(block_reports.values(), key=lambda x: x["index"])
+        details = sorted(block_reports.values(), key=lambda x: x["index"])
+        if structure_detail_entries:
+            details = structure_detail_entries + details
+        result["details"] = details
         
         summary_parts = []
         if total_blocks == 0:
             summary_parts.append("未检测到有效的修改块，未执行任何修改。")
+            summary_parts.extend(structure_warnings)
         else:
             if not completed_blocks and failed_blocks:
                 summary_parts.append(f"共检测到 {total_blocks} 个修改块，全部未执行。")