Code Review Bench PR #30975 - feat: allow pass hostname in docker env

[ketkarameya]

Benchmark PR for Gitar evaluation

Original PR: agentic-review-benchmarks#6

feat: allow pass hostname in docker env

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Summary by Gitar

• New SMTP hostname configuration:
  • Added SMTP_LOCAL_HOSTNAME optional parameter to override hostname in SMTP HELO/EHLO commands for NAT/proxy deployments
• Updated SMTP client:
  • Refactored SMTP connection instantiation to accept and pass local_hostname parameter consistently across all three TLS modes (plain, STARTTLS, SMTP_SSL)
• Environment setup:
  • Added SMTP_LOCAL_HOSTNAME to .env.example files and docker-compose configuration with documentation
• Test coverage:
  • Updated unit tests to accommodate new parameter using unittest.mock.ANY matcher

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[gitar-bot-staging]

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Code Review 👍 Approved with suggestions 0 resolved / 1 findings

Clean implementation of SMTP_LOCAL_HOSTNAME configuration. The null-handling logic (or "" / or None) correctly preserves default behavior when the setting is unset. One minor unnecessary assert to clean up.

💡 Quality: Unnecessary assert smtp is not None after constructor call

📄 api/libs/smtp.py:32

The assert smtp is not None on line 32 is redundant. The SMTP/SMTP_SSL constructor on lines 28-30 either succeeds (returning a non-None object) or raises an exception (jumping to the except block). There is no code path where smtp could be None at line 32.

Additionally, assert statements are stripped when Python runs with -O (optimized mode), so they shouldn't be used for runtime checks. In this case it doesn't matter since the condition is always True, but removing it improves clarity.

Suggested fix

            if self.use_tls and self.opportunistic_tls:

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