diff --git a/core/typing_logic.py b/core/typing_logic.py
index 8a0b77d..2bb3498 100644
--- a/core/typing_logic.py
+++ b/core/typing_logic.py
@@ -1,8 +1,11 @@
 from pygments.lexers import get_lexer_for_filename, TextLexer
 from pygments.token import Token
+from pygments.util import ClassNotFound
 from typing import List, Dict, Any
 
 class TypingMapBuilder:
+    # 关闭 Pygments 的换行归一化，保证映射长度与编辑器原文严格一致。
+    _LEXER_OPTIONS = {"stripnl": False, "ensurenl": False}
     
     @staticmethod
     def _get_token_category(token_type) -> str:
@@ -20,9 +23,12 @@ def _get_token_category(token_type) -> str:
     @staticmethod
     def build_map(code: str, filename: str) -> List[Dict[str, Any]]:
         try:
-            lexer = get_lexer_for_filename(filename)
-        except Exception:
-            lexer = TextLexer()
+            lexer = get_lexer_for_filename(
+                filename,
+                **TypingMapBuilder._LEXER_OPTIONS,
+            )
+        except ClassNotFound:
+            lexer = TextLexer(**TypingMapBuilder._LEXER_OPTIONS)
 
         tokens = lexer.get_tokens(code)
         typing_map = []
@@ -40,4 +46,4 @@ def build_map(code: str, filename: str) -> List[Dict[str, Any]]:
                     "category": category  # 【新增】将语法基因刻入每一个字符
                 })
                 
-        return typing_map
\ No newline at end of file
+        return typing_map
diff --git a/docs/superpowers/plans/2026-07-16-preserve-typing-map-newlines.md b/docs/superpowers/plans/2026-07-16-preserve-typing-map-newlines.md
new file mode 100644
index 0000000..2ded425
--- /dev/null
+++ b/docs/superpowers/plans/2026-07-16-preserve-typing-map-newlines.md
@@ -0,0 +1,107 @@
+# Preserve Typing Map Newlines Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** 确保键入映射逐字符保留原始代码，包括缺失的末尾换行和多个尾随空行。
+
+**Architecture:** 保持现有 `TypingMapBuilder` 接口不变，只调整 Pygments 词法分析器的文本归一化选项。使用 Python 标准库 `unittest` 从公开接口验证映射字符与输入原文完全一致，无需新增运行时或测试依赖。
+
+**Tech Stack:** Python 3.8+、Pygments、unittest
+
+## Global Constraints
+
+- 所有文件继续使用 UTF-8 编码。
+- 代码注释使用中文。
+- 改动仅限键入映射的换行保真和对应测试，不重构 GUI 或 AI 模块。
+
+---
+
+### Task 1: 保留原始代码的换行结构
+
+**Files:**
+- Modify: `core/typing_logic.py`
+- Create: `tests/test_typing_logic.py`
+
+**Interfaces:**
+- Consumes: `TypingMapBuilder.build_map(code: str, filename: str) -> List[Dict[str, Any]]`
+- Produces: 保持相同签名，并保证返回节点中的 `expected_char` 拼接结果严格等于 `code`
+
+- [x] **Step 1: 写入失败测试**
+
+```python
+import unittest
+
+from core.typing_logic import TypingMapBuilder
+
+
+class TypingMapBuilderTests(unittest.TestCase):
+    @staticmethod
+    def _mapped_text(code: str, filename: str) -> str:
+        return "".join(
+            node["expected_char"]
+            for node in TypingMapBuilder.build_map(code, filename)
+        )
+
+    def test_does_not_add_trailing_newline(self):
+        code = "value = 42"
+        self.assertEqual(self._mapped_text(code, "example.py"), code)
+
+    def test_preserves_multiple_trailing_newlines(self):
+        code = "value = 42\n\n"
+        self.assertEqual(self._mapped_text(code, "example.py"), code)
+
+    def test_plain_text_fallback_preserves_input(self):
+        code = "第一行\n\n"
+        self.assertEqual(self._mapped_text(code, "example.unknown"), code)
+
+
+if __name__ == "__main__":
+    unittest.main()
+```
+
+- [x] **Step 2: 运行测试并确认当前行为失败**
+
+Run: `python -m unittest discover -s tests -v`
+
+Expected: 3 个测试因 Pygments 添加或折叠末尾换行而失败。
+
+- [x] **Step 3: 禁用词法分析器的换行归一化**
+
+```python
+from pygments.lexers import get_lexer_for_filename, TextLexer
+from pygments.token import Token
+from pygments.util import ClassNotFound
+
+
+class TypingMapBuilder:
+    _LEXER_OPTIONS = {"stripnl": False, "ensurenl": False}
+
+    @staticmethod
+    def build_map(code: str, filename: str) -> List[Dict[str, Any]]:
+        try:
+            lexer = get_lexer_for_filename(
+                filename,
+                **TypingMapBuilder._LEXER_OPTIONS,
+            )
+        except ClassNotFound:
+            lexer = TextLexer(**TypingMapBuilder._LEXER_OPTIONS)
+```
+
+- [x] **Step 4: 运行单元测试并确认通过**
+
+Run: `python -m unittest discover -s tests -v`
+
+Expected: `Ran 3 tests` 和 `OK`。
+
+- [x] **Step 5: 运行语法编译检查**
+
+Run: `python -m compileall -q core gui main.py tests`
+
+Expected: 命令退出码为 0，且没有错误输出。
+
+- [x] **Step 6: 提交改动**
+
+```bash
+git add core/typing_logic.py tests/test_typing_logic.py docs/superpowers/plans/2026-07-16-preserve-typing-map-newlines.md
+git commit -m "fix typing map newline preservation"
+```
diff --git a/tests/test_typing_logic.py b/tests/test_typing_logic.py
new file mode 100644
index 0000000..07f28aa
--- /dev/null
+++ b/tests/test_typing_logic.py
@@ -0,0 +1,28 @@
+import unittest
+
+from core.typing_logic import TypingMapBuilder
+
+
+class TypingMapBuilderTests(unittest.TestCase):
+    @staticmethod
+    def _mapped_text(code: str, filename: str) -> str:
+        return "".join(
+            node["expected_char"]
+            for node in TypingMapBuilder.build_map(code, filename)
+        )
+
+    def test_does_not_add_trailing_newline(self):
+        code = "value = 42"
+        self.assertEqual(self._mapped_text(code, "example.py"), code)
+
+    def test_preserves_multiple_trailing_newlines(self):
+        code = "value = 42\n\n"
+        self.assertEqual(self._mapped_text(code, "example.py"), code)
+
+    def test_plain_text_fallback_preserves_input(self):
+        code = "第一行\n\n"
+        self.assertEqual(self._mapped_text(code, "example.unknown"), code)
+
+
+if __name__ == "__main__":
+    unittest.main()