fix: 尊重显式配置的 Shipyard Neo profile

[Tsukumi233]

修复 Shipyard Neo 在 AstrBot 里错误地把 python-default 当成“默认占位值”的问题。现在只要 profile 非空，就会按用户显式配置传给 Bay；只有 profile 为空时，才自动扫描并优先选择带 browser capability 的 profile。

Modifications / 改动点

• 这不是一个破坏性变更。
• 调整 astrbot/core/computer/booters/shipyard_neo.py 的 profile 解析逻辑，确保 python-default 作为显式配置时会被尊重。
• 更新 tests/test_profile_aware_tools.py，补充显式 python-default 和空值自动选择两类用例。
• 同步更新配置提示和文档，明确“留空才自动选择”的行为。

Screenshots or Test Results / 运行截图或测试结果

已完成验证：

• uv run pytest tests/test_profile_aware_tools.py
• uv run ruff format .
• uv run ruff check .

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Checklist / 检查清单

• 😊 如果这个 PR 里有新功能，我已经通过 Issue / 邮件等方式和作者讨论过。
• 👀 我的更改已经充分测试，并且上方已经提供了“验证步骤”和“运行截图/日志”。
• 🤓 我确保没有引入新依赖库；如果引入了新依赖，也已同步更新 requirements.txt 和 pyproject.toml。
• 😮 我的更改没有引入恶意代码。

[sourcery-ai]

Hey - I've left some high level feedback:

• Consider using Optional[str] with None as the sentinel for “auto-select” rather than overloading an empty string, and documenting this explicitly in the constructor docstring to make the profile semantics clearer to future maintainers.
• Since profile is now stripped on init, if leading/trailing spaces are considered invalid input it might be helpful to log a warning when profile is non-empty but becomes empty after stripping, to surface potential misconfigurations instead of silently switching to auto-select.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Consider using `Optional[str]` with `None` as the sentinel for “auto-select” rather than overloading an empty string, and documenting this explicitly in the constructor docstring to make the profile semantics clearer to future maintainers.
- Since `profile` is now stripped on init, if leading/trailing spaces are considered invalid input it might be helpful to log a warning when `profile` is non-empty but becomes empty after stripping, to surface potential misconfigurations instead of silently switching to auto-select.

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[gemini-code-assist]

Code Review

This pull request updates the profile selection logic for the Shipyard Neo booter, changing the default profile from a hardcoded value to an empty string to enable automatic selection. When a profile is explicitly provided (including 'python-default'), it is now honored directly instead of potentially triggering auto-selection. These changes are supported by updated configuration hints, multi-language localization files, documentation, and new test cases. I have no feedback to provide as there were no review comments to evaluate.