pyproject declares requires-python >=3.10 but pinned nanobot-ai needs >=3.11 — install fails on Python 3.10

[EricChan2028]

问题 / Problem

pyproject.toml 声明 requires-python = ">=3.10"，但依赖 nanobot-ai>=0.1.4.post5 实际只发布了 Python ≥3.11 的 wheel（其自身元数据也要求 ≥3.11）。在干净的 Python 3.10 环境安装本 SDK 会直接失败：

pyproject.toml declares requires-python = ">=3.10", but the pinned dependency nanobot-ai>=0.1.4.post5 only ships wheels for Python ≥3.11 (its own metadata requires ≥3.11). Installing this SDK on a clean Python 3.10 environment therefore fails:

$ python3.10 -m pip install trpc-agent-sdk
ERROR: Ignored the following versions that require a different python version:
0.1.4.post5 Requires-Python >=3.11
ERROR: Could not find a version that satisfies the requirement nanobot-ai>=0.1.4.post5

复现环境:Ubuntu 22.04,系统 Python 3.10.12。用 uv venv --python 3.12 后安装一切正常。
Reproduced on Ubuntu 22.04 with system Python 3.10.12; installing under Python 3.12 works fine.

建议 / Suggested fix (either)

1. 将 requires-python 提升为 ">=3.11",与实际可安装范围一致(推荐,一行改动);或
   Bump requires-python to ">=3.11" to match reality (recommended, one-line change); or
2. 对 3.10 放宽 nanobot-ai 的版本下限(若旧版本兼容),例如按 Python 版本分环境标记。
   Relax the nanobot-ai lower bound for 3.10 via an environment marker, if an older version is compatible.

顺带建议在 README 的安装章节注明最低 Python 版本,避免 3.10 用户踩坑。
It would also help to state the minimum Python version in the README install section so 3.10 users don't hit this.

[raychen911]

默认情况不安装openclaw，只有选择安装openclaw或者选择安装all的场景才会安装nanobot-ai；这个可以在后续文档中补充