chore: sync current workspace to dev

AGENTS.md

@@ -1,19 +1,27 @@
-## 目录结构
+## Repository Structure
 
-- `infra/`: 基础设施与运维（Docker、脚本、部署相关）
-- `backend/`: FastAPI 后端
-- `apps/`: Flutter 手机端
-- `docs/`: 文档与方案
+- `infra/`: Infrastructure and operations (Docker, scripts, deployment).
+- `backend/`: FastAPI backend.
+- `apps/`: Flutter mobile app.
+- `docs/`: Documentation and design/planning artifacts.
 
-## Agent 规则分层
+## Rules Hierarchy
 
-- 根目录 `AGENTS.md` 为通用规则，所有修改均需遵守
-- 编辑 `backend/` 目录时，必须同时遵守 `backend/AGENTS.md`
-- 编辑 `apps/` 目录时，必须同时遵守 `apps/AGENTS.md`
+- This root `AGENTS.md` defines global rules and applies to all changes.
+- When editing `backend/`, you must also follow `backend/AGENTS.md`.
+- When editing `apps/`, you must also follow `apps/AGENTS.md`.
 
-## Docker 启动
+## Docker Startup
 
 Always start services with the env file:
+
 ```bash
 docker compose --env-file .env -f infra/docker/docker-compose.yml up -d
 ```
+
+## Git Branch and Worktree Policy
+
+- Use `dev` as the default base branch for day-to-day development.
+- New development worktrees must be created from `dev` (never from `main`).
+- Do not develop or commit directly on `main` outside explicit release/merge workflows.
+- Do not rewrite `main` history unless explicitly requested (including reset and force push).