Claude code - Convert to the new build system

[jakubno]

Note

Migrates JS/Python examples to the new e2b Template build flow with dev/prod builders, upgrades e2b SDKs, removes Dockerfiles, and sources API keys from env.

• Examples (JS):
  • Build system: Add src/template.ts defining the image and install step; add src/build.dev.ts and src/build.prod.ts using Template.build with aliases and resource settings.
  • Runtime: Update src/index.ts to import templateName, read ANTHROPIC_API_KEY from env, and await sbx.kill().
  • Deps: Bump e2b to ^2.1.5.
  • Cleanup: Remove examples/anthropic-claude-code-in-sandbox-js/e2b.Dockerfile.
• Examples (Python):
  • Build system: Add template.py plus build_dev.py and build_prod.py invoking Template.build with aliases and resource settings.
  • Runtime: Update main.py to Sandbox.create(...) and read ANTHROPIC_API_KEY via os.getenv.
  • Deps/Config: Set requires-python to >=3.9,<4.0; require e2b>=2.1.0.
  • Cleanup: Remove examples/anthropic-claude-code-in-sandbox-python/e2b.Dockerfile.}

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[dobrac]

Thanks! Just one nit