[moz] impl(§17): issue_assigned steps git 操作具体化 + ToolchainApiSection Git 说明

改动 1: issue_assigned 编码路径 steps 改为具体 git 命令
  (checkout main → pull → checkout -b → add/commit → push)
改动 2: ToolchainApiSection 新增 Git 操作说明段落（含开发目录路径）
改动 3: 测试更新（issue_assigned 断言 + 3 个 Git 说明测试）
466 passed

src/api/toolchain_routes.py

@@ -1032,10 +1032,10 @@ async def _handle_issues(payload: Dict[str, Any]) -> None:
                 event_type="issue_assigned",
                 action_type="issue_assigned",
                 steps=[
-                    f"创建分支 fix/{issue_number}-{brief}",
+                    f"在开发目录执行 git 操作：\n  a. git checkout main && git pull origin main\n  b. git checkout -b fix/{issue_number}-{brief}",
                     "编码 + 写 UT",
-                    "push → 等 CI",
-                    f"CI 通过后创建 PR（Gitea API: POST /repos/{repo}/pulls）",
+                    f"git add -A && git commit -m \"[moz] fix: {issue_title[:30]}\" && git push origin fix/{issue_number}-{brief}",
+                    f"CI 通过后创建 PR（Gitea API: POST /repos/{repo}/pulls，head: fix/{issue_number}-{brief}, base: main）",
                     "等 Review",
                     "提交 action report（POST http://localhost:8083/api/projects/_toolchain/tasks/<task_id>/comments，comment_type=action_report）",
                 ],

src/daemon/toolchain_handler.py

@@ -179,6 +179,20 @@ class ToolchainApiSection:
             "⚠️ Issue body 必须包含错误来源链接（PR/Commit + CI run），让排查者能直接看到全貌。",
             "⚠️ label 数字 ID 先 GET /repos/{repo}/labels 查询 type/infrastructure 对应的 ID。",
             "",
+            "### Git 操作说明",
+            "",
+            "你的工作目录是开发目录（如 ~/.openclaw/sanguo_projects/sanguo_moziplus_v2/）。",
+            "标准分支操作流程：",
+            "```bash",
+            "git checkout main && git pull origin main    # 从最新主干开始",
+            "git checkout -b fix/{branch_name}           # 创建功能分支",
+            "# ... 写代码 ...",
+            "git add -A && git commit -m 'message'        # 提交改动",
+            "git push origin {branch_name}               # 推送到远程",
+            "```",
+            "",
+            "⚠️ 不要在 main 分支上直接 commit。",
+            "",
         ]
         return "\n".join(lines)