build: 添加 Windows 打包方案

- 更新 PyInstaller spec 配置
- 简化 build.sh 构建脚本
- 更新 build.bat Windows 打包脚本
- 添加 docs/BUILD.md 打包说明文档

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CutThenThink.spec

@@ -1,20 +1,47 @@
 # -*- mode: python ; coding: utf-8 -*-
+"""
+CutThenThink - Windows 打包配置
 
+极简截图上传工具的 PyInstaller 配置
+"""
+import sys
+from PyInstaller.building.build_main import Analysis, EXE, COLLECT, PYZ
+from PyInstaller.building.api import PKG
 
+# 项目信息
+APP_NAME = 'CutThenThink'
+APP_VERSION = '2.0.0'
+
+# 分析配置
 a = Analysis(
     ['src/main.py'],
     pathex=[],
     binaries=[],
-    datas=[('src', 'src')],
-    hiddenimports=['PyQt6.QtCore', 'PyQt6.QtGui', 'PyQt6.QtWidgets', 'sqlalchemy'],
+    datas=[
+        # 包含配置文件模板
+        ('config.yaml.template', '.'),
+    ],
+    hiddenimports=[
+        'PyQt6.QtCore',
+        'PyQt6.QtGui',
+        'PyQt6.QtWidgets',
+        'yaml',
+    ],
     hookspath=[],
     hooksconfig={},
     runtime_hooks=[],
-    excludes=[],
+    excludes=[
+        # 排除测试相关
+        'test',
+        'tests',
+        'pytest',
+    ],
     noarchive=False,
     optimize=0,
 )
-pyz = PYZ(a.pure)
+
+# 打包配置
+pyz = PYZ(a.pure, a.zipped_data, cipher=None)
 
 exe = EXE(
     pyz,
@@ -22,17 +49,42 @@ exe = EXE(
     a.binaries,
     a.datas,
     [],
-    name='CutThenThink',
+    exclude_binaries=True,
+    name=APP_NAME,
     debug=False,
     bootloader_ignore_signals=False,
     strip=False,
-    upx=True,
+    upx=True,                     # 使用 UPX 压缩
     upx_exclude=[],
     runtime_tmpdir=None,
-    console=False,
+    console=False,                  # 无控制台窗口
     disable_windowed_traceback=False,
     argv_emulation=False,
     target_arch=None,
     codesign_identity=None,
     entitlements_file=None,
+    icon=None,                      # TODO: 添加图标路径
+)
+
+# 收集所有文件
+coll = COLLECT(
+    exe,
+    a.binaries,
+    a.zipfiles,
+    a.datas,
+    strip=False,
+    upx=True,
+    upx_exclude=[],
+    name=APP_NAME,
+)
+
+# 构建 MSI 安装包（Windows）
+pkg = PKG(
+    coll,
+    name=APP_NAME,
+    version=APP_VERSION,
+    description='极简截图上传工具',
+    author='CutThenThink',
+    keywords=['screenshot', 'upload', 'OCR'],
+    license='MIT',
 )