Merge origin/main into feat/export-service

同步 main(054f704),解决 contracts.py / main.py / README.md / 技术栈说明 的合并冲突。
- contracts.py:保留 pydantic 多行导入并新增 RequestOverride
- main.py:合并 lifespan(导出孤儿清理 + 转写/本地模型生命周期)
- README.md / 技术栈说明:文档取 main 最新版本

Co-Authored-By: Claude Code <noreply@anthropic.com>
This commit is contained in:
yxx
2026-09-05 21:44:20 +08:00
co-authored by Claude Code
186 changed files with 14884 additions and 1665 deletions
+4
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@@ -6,6 +6,10 @@ frontend/*.tsbuildinfo
# Backend
backend/.venv/
backend/.venv-models/
backend/.venv-models-cuda/
backend/data/models/
backend/data/attachments/
backend/.uv-cache/
backend/.pytest_cache/
backend/*.egg-info/