fix: standardize sandbox data api errors

[TJKkking]

Raise ClientError/ServerError for Sandbox HTTP JSON error responses and expose structured error metadata on HTTPError. Document the breaking migration in release notes.

Tests: uv run pytest tests/unittests/utils/test_exception.py tests/unittests/sandbox/api/test_sandbox_data.py; uv run pytest tests/unittests/sandbox/api/test_code_interpreter_data.py tests/unittests/sandbox/api/test_browser_data.py tests/unittests/sandbox/api/test_aio_data.py tests/unittests/sandbox/test_client.py.

Type check: targeted mypy passed for modified files. Full mypy is blocked by existing duplicate module sandbox from local/sandbox/init.py and examples/sandbox.py.

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[TJKkking]

@claude code review

[Copilot]

Pull request overview

Standardizes Sandbox data-plane HTTP JSON API error handling so callers receive consistent ClientError/ServerError exceptions (with structured metadata) instead of needing to inspect returned dictionaries.

Changes:

• Extend HTTPError to carry error_code, response_body, and response_headers, and update string formatting to avoid expanding response metadata.
• Update SandboxDataAPI HTTP handling to raise ClientError for 4xx and ServerError for 5xx JSON error responses (sync + async), with robust request-id extraction.
• Add unit tests for the new exception fields/formatting and Sandbox data-plane HTTP behaviors; add release notes documenting the breaking migration.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/unittests/utils/test_exception.py	Adds coverage for new HTTPError metadata fields and updated __str__ behavior.
tests/unittests/sandbox/api/test_sandbox_data.py	Adds respx-based tests validating sandbox data-plane success/error behaviors for sync/async calls.
tests/unittests/conftest.py	Adds autouse env isolation to prevent local .env from polluting unit tests.
agentrun/utils/exception.py	Adds structured error metadata to HTTPError and updates formatting; simplifies ClientError/ServerError.
agentrun/sandbox/api/sandbox_data.py	Implements standardized HTTP JSON error raising and structured error extraction for Sandbox data-plane requests.
agentrun/sandbox/api/__sandbox_data_async_template.py	Updates codegen template to match the new sandbox data-plane HTTP error handling behavior.
RELEASE_NOTES.md	Documents the breaking behavior change and migration guidance.

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[OhYee]

@copilot 检查下是否存在隐患，是否存在不兼容变动

[Copilot]

@copilot 检查下是否存在隐患，是否存在不兼容变动

以下是变更中存在的隐患及不兼容点分析：

已记录的 Breaking Change（在 RELEASE_NOTES.md 中有说明）

• Sandbox 数据层 HTTP 错误处理：SandboxDataAPI._make_request / _make_request_async 现在对 4xx/5xx 响应抛出 ClientError/ServerError，而非原来返回包含错误信息的 dict。影响 SandboxDataAPI 的所有公开方法（check_health、create_sandbox、delete_sandbox 等），任何通过检查返回 dict 中 code/requestId 来判断错误的代码均需按 RELEASE_NOTES.md 中的迁移指引更新。

未记录的 Breaking Change

• HTTPError.__str__ 输出格式变更：旧格式固定为 "HTTP {status}: {msg}. Request ID: None. Details: {}" （无论字段是否为 None 都输出）；新格式仅在字段非空时才追加，且各部分之间改用 ". " 拼接。任何解析该字符串的代码（如日志处理、测试断言）将受到影响，但此变更未在 RELEASE_NOTES.md 中提及。

潜在风险（功能不一致）

• 2xx 非 JSON 响应的异常类型变更：父类 DataAPI._parse_success_response 对非 JSON 的 2xx 响应抛出 ClientError，而新的 SandboxDataAPI._parse_success_response 抛出 ServerError。两者行为不一致，且沙箱端实际上并无过错，理论上 ClientError 更语义准确（解析失败属于可预期情况）。目前 CI 测试全部通过（4/4 runs 均 success），对实际用户影响较低。

向后兼容改动（无风险）

• HTTPError 新增了 error_code、response_body、response_headers 字段（默认值为 None），现有调用方不受影响。
• ServerError 移除了显式 __init__（原本不接受 **kwargs），现通过继承支持新字段，属于放宽约束，不影响现有调用。
• 非 Sandbox 的 API 客户端（AgentRuntime、Model 等）均未受影响，因为它们未覆盖 _make_request。

建议：在 RELEASE_NOTES.md 中补充 HTTPError.__str__ 格式变更的说明，并将 _parse_success_response 中的 ServerError 改为 ClientError，以保持与父类行为一致。