v1.1.0: 增加交互提示、路径输入、窗口属性配置

- main.py: 增加show_banner()启动说明、各阶段[INFO]日志、结果摘要、任意键退出
- file_selector.py: 重写为路径输入→验证→空输入弹窗回退→不存在循环重试
- run.bat: 新建启动脚本(chcp 65001, mode con cols=80 lines=20, color 0B, title固定署名, pause)
- Code/docs/modification-assessment.md: 修改需求评估文档

Releases/v1.0.1/source/xlsx_reader.py

@@ -0,0 +1,97 @@
+"""XLSX reader — pure Python, zero dependencies.
+
+Uses ``zipfile`` + ``xml.etree.ElementTree`` to parse an .xlsx file
+and return a cell map matching the xls_reader interface.
+"""
+
+import zipfile
+import xml.etree.ElementTree as ET
+
+from models import FileFormatError
+from utils import cell_ref_to_rc
+
+# OOXML namespace — the XML uses a default namespace (no prefix),
+# so we build the tag names with the full URI.
+_S = 'http://schemas.openxmlformats.org/spreadsheetml/2006/main'
+
+def _tag(local: str) -> str:
+    """Build a namespaced tag like {ns}row."""
+    return f'{{{_S}}}{local}'
+
+
+def read_excel_cells(filepath: str) -> dict[tuple[int, int], str]:
+    """Read an .xlsx file and return {(row, col): str}.
+
+    Rows and columns are 0-based.  A1 → (0, 0).
+    """
+    return XLSXReader(filepath).read_all_cells()
+
+
+class XLSXReader:
+    """Read an .xlsx file and return a cell map."""
+
+    def __init__(self, filepath: str):
+        self._filepath = filepath
+        self._shared_strings: list[str] = []
+        self._cells: dict[tuple[int, int], str] = {}
+
+    def read_all_cells(self) -> dict[tuple[int, int], str]:
+        """Return {(row, col): str} for every non-empty cell."""
+        with zipfile.ZipFile(self._filepath, 'r') as zf:
+            self._parse_shared_strings(zf)
+            self._parse_sheet(zf, 'xl/worksheets/sheet1.xml')
+        return dict(self._cells)
+
+    def _parse_shared_strings(self, zf: zipfile.ZipFile):
+        """Parse xl/sharedStrings.xml."""
+        try:
+            data = zf.read('xl/sharedStrings.xml')
+        except KeyError:
+            return  # No shared strings table
+
+        root = ET.fromstring(data)
+        self._shared_strings = []
+        for si in root.findall(_tag('si')):
+            text_parts = []
+            for t in si.findall(f'.//{_tag("t")}'):
+                if t.text:
+                    text_parts.append(t.text)
+            self._shared_strings.append(''.join(text_parts))
+
+    def _parse_sheet(self, zf: zipfile.ZipFile, sheet_path: str):
+        """Parse a worksheet XML and populate self._cells."""
+        try:
+            data = zf.read(sheet_path)
+        except KeyError:
+            raise FileFormatError(f"Worksheet not found: {sheet_path}")
+
+        root = ET.fromstring(data)
+        sheet_data = root.find(_tag('sheetData'))
+        if sheet_data is None:
+            return
+        for row_elem in sheet_data.findall(_tag('row')):
+            row_num = int(row_elem.get('r', '0')) - 1  # 1-based → 0-based
+            for cell_elem in row_elem.findall(_tag('c')):
+                ref = cell_elem.get('r', '')
+                if not ref:
+                    continue
+                row, col = cell_ref_to_rc(ref)
+                cell_type = cell_elem.get('t', '')
+                value_elem = cell_elem.find(_tag('v'))
+                value = value_elem.text if value_elem is not None else ''
+
+                if cell_type == 's':
+                    # Shared string reference
+                    try:
+                        idx = int(value)
+                        value = self._shared_strings[idx] if idx < len(self._shared_strings) else value
+                    except (ValueError, IndexError):
+                        pass
+                elif cell_type == 'b':
+                    value = 'TRUE' if value == '1' else 'FALSE'
+                elif cell_type == 'n':
+                    # Numeric — keep as-is (will be formatted later)
+                    pass
+                # else: inline string or default text
+
+                self._cells[(row, col)] = value