Remove large files and build artifacts from Git tracking

- Remove build/ and dist/ directories (>500MB total)
- Remove large log files (log.log, log_dms*.txt, etc.)
- Remove binary files (history_local, mvp.zip, 归档.zip)
- Remove Python compiled files (*.pyc)
- Remove database files (*.db)
- Remove system files (.DS_Store)
- Update .gitignore to prevent future tracking of these files

This reduces repository size significantly and follows best practices
for version control by excluding generated/temporary files.

.gitignore

@@ -4,6 +4,9 @@
 ./memory-bank
 ./logs
 ./build
+# 构建和分发目录
+build/
+dist/
 log*
 
 # Python相关
@@ -144,4 +147,51 @@ __pypackages__/
 # mypy
 .mypy_cache/
 .dmypy.json
-dmypy.json
+dmypy.json
+# 大文件和构建产物
+build/
+dist/
+*.zip
+*.tar.gz
+*.rar
+*.7z
+
+# 日志文件
+*.log
+*.log.*
+dms.log
+post_output.log
+
+# 数据库文件
+*.db
+*.sqlite
+*.sqlite3
+users.db
+
+# Python编译文件
+*.pyc
+*.pyo
+__pycache__/
+
+# 系统文件
+.DS_Store
+Thumbs.db
+
+# 临时文件
+*.tmp
+*.temp
+*~
+
+# 大的字体文件（如果不需要版本控制）
+# assets/fonts/*.ttc
+# assets/fonts/*.otf
+
+# 二进制文件
+*.bin
+*.exe
+*.pkg
+
+# 历史文件
+history_local
+mvp.zip
+归档.zip