docs: add TealTiger governed sandbox guide

[Tushar-Khandelwal-2004]

Summary

Addresses #5036.

Adds a TealTiger + Daytona governed sandbox guide showing how to place a pre-execution governance step before sandbox.process.code_run().

Changes

• Add a runnable Python guide under guides/python/tealtiger/governed-sandbox
• Demonstrate TealTiger guarded code generation before Daytona sandbox execution
• Record a blocked receipt when governance fails before sandbox creation
• Add the docs page and sidebar/i18n entries for the new guide

Testing

• python -m py_compile guides/python/tealtiger/governed-sandbox/governed_sandbox.py
• python -m json.tool apps/docs/src/content/i18n/en.json
• python -m json.tool apps/docs/src/content/i18n/ja.json
• git diff --check

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Summary by cubic

Adds a TealTiger + Daytona governed sandbox guide and runnable Python example. Adds a pre-execution governance step before sandbox.process.code_run() to block unsafe code and emit an execution receipt, addressing #5036.

• New Features
  • New docs page: Govern AI-generated code with TealTiger + Daytona, including workflow and core pattern.
  • Runnable example in guides/python/tealtiger/governed-sandbox using tealtiger, daytona, openai, and python-dotenv, with pyproject.toml and .env.example.
  • Governance checks for secret detection, prompt injection, and session budget; records a blocked receipt and skips sandbox creation on failure.
  • Adds sidebar link and i18n keys for the TealTiger guide.

^{Written for commit 7cf99cf. Summary will update on new commits.}

[cubic-dev-ai]

2 issues found across 9 files

<sub>Reply with feedback, questions, or to request a fix.

Fix all with cubic | Re-trigger cubic</sub>

[nagasatish007]

Thanks for picking this up @Tushar-Khandelwal-2004! I'm the TealTiger maintainer — happy to review the governance-specific parts and confirm the integration pattern is correct.

The approach looks solid from a quick scan. Let me know if you need any help with the TealTiger API surface.