[anycodes]

Description

A fresh public non-all installation exports Template and AsyncTemplate but their ordinary help examples still import from the absent e2b package. Correct the 24 affected imports to use the existing public agent_sandbox names. Prepare lockstep client/server 0.4.0a5 without changing API parameters, execution behavior or attribution.

Refs #128 (public publication/readback criteria remain after merge).

Type of Change

• 🐛 Bug fix
• 📖 Documentation
• 🧪 Tests

Changes

• Only 24 docstring imports across five maintained template files, plus three paired version/dependency declarations; executable AST excluding docs is unchanged. NOTICE, LICENSE and upstream SOURCES remain byte-identical. Valid standard api_key parameters are preserved.
• Execute actual documented imports against public exports in 24 regression cases, including public builder/logger/readiness helpers.
• Add English/Chinese guidance and dated sanitized public-a4 acceptance: 14 actual cloud examples with 29 independent typed-not-found checks, separate local runner/timeout controls and 27 independently absent owned processes. These are a4 facts, never relabeled a5; historical browser failures remain intact.
• Accept the already merged PR127 current-a4 note from its verified merge and all 13 exact-head checks. Current install guidance remains actually public a4 until a5 publication succeeds.

Testing

• Regression before patch: 24 FAIL; afterward 49 focused PASS (24 imports + existing standard/Provider help checks).
• Client full suite: 2313 PASS, 26 skipped, one warning, 128.47s.
• Local server full suite: 878 PASS / 2 FAIL, 317.14s. Existing local low-level HTTP assertions returned 501/502 instead of 400; failures are preserved, not weakened. Required remote suite must independently pass.
• Both-package ruff, format and mypy; four distributions, twine, both py.typed markers and fresh combined wheel install/imports.
• Installed candidate wheels: no e2b, 24 help imports, 12 Provider doc/signature checks, pip check, real HTTP health/shell/files and independent owned-process absence.
• Repository health 106 PASS / one existing release-runbook WARN / zero FAIL; hygiene and diff checks.
• Exact-head required CI / independent final review / normal merge.
• Official a5 tag/publication, preserved four-file hashes and fresh public non-all installation; recorded separately only after actual success.

Checklist / Definition of Done

• Scoped note and new verification evidence; existing merged evidence unchanged.
• English and Chinese docs, CHANGELOG, lockstep versions.
• Real-component evidence distinguishes public-a4 cloud/local and candidate-a5 local HTTP scopes.
• No credentials, resource identifiers or machine-local paths.
• Required exact-head checks and independent review before ready/merge; publication criteria do not close prematurely.