chore(sdk/python): bump version to 0.7.0

[wbzdssm]

Bump Python SDK version from 0.6.0 to 0.7.0.

Files changed:

• sdk/python/pyproject.toml
• sdk/python/cubesandbox/init.py
• sdk/python/README.md

Note: Please ensure the human submitter adds their own Signed-off-by tag for DCO compliance.

[cubesandboxbot]

The Chinese-language README was missed: sdk/python/README.zh.md:9 still has the version-0.6.0 badge. Please bump it to 0.7.0 so the two READMEs stay consistent (the CI publish workflow doesn't check READMEs, so this won't be caught automatically).

[cubesandboxbot]

Review: chore(sdk/python): bump version to 0.7.0 (#1511)

AI-generated review — not a human approval.

Summary

The PR bumps the Python SDK version from 0.6.0 to 0.7.0 across the three canonical places: pyproject.toml, cubesandbox/__init__.py (__version__), and the English README.md badge. The three changed files are internally consistent, and pyproject.toml remains the single source of truth consumed by python -m build in .github/workflows/publish-python-sdk.yml (the publish tag is python-sdk-v*). No functional code changes; this is a straightforward, low-risk version bump.

Findings

1. Low — README.zh.md badge not updated (sdk/python/README.zh.md:9)
The Chinese mirror of the SDK README still advertises version-0.6.0 / alt="v0.6.0", so zh-language users will see a stale version. Since this PR's purpose is the 0.7.0 bump, the zh badge should be updated in the same change. (Inline comment posted on the README.md change.)

2. Process note — DCO sign-off
The repo's .github/workflows/dco-check.yml fails any PR whose commits lack a Signed-off-by: line, and the PR body itself flags that the human submitter still needs to add their sign-off. Confirm the commit de91939d carries a valid Signed-off-by: trailer before merge, or the DCO check will block this PR.

Verification performed

• All three diff hunks change 0.6.0 → 0.7.0; no other version reference within sdk/python/ (e.g. envd_version, connect-protocol-version) is affected by this bump.
• Repo-wide 0.6.0 hits (cube-lifecycle-manager, helm chart values.yaml, Cargo.lock, Go SDK workflow comments, etc.) are unrelated components with their own release cadence and are correctly out of scope.
• The Python SDK has no local changelog file to update; repo-level changelogs track the platform release tag, not the SDK version.

No correctness or functional issues found.

[cubesandboxbot]

The Chinese mirror of this README (sdk/python/README.zh.md:9) still shows version-0.6.0 / alt="v0.6.0". Since this PR bumps the SDK to 0.7.0, the zh badge should be updated in the same change to avoid advertising a stale version to zh users.